Page 1 Service manual Split New Perfera R32 RXM20~71R ARXM25~71R FTXM20~71R ATXM25~50R FVXM25~50A...
Page 2 The present publication is drawn up by way of information only and does not constitute an offer binding upon Daikin Europe N.V.. Daikin Europe N.V. has compiled the content of this publication to the best of its knowledge. No express or implied warranty is given for the completeness, accuracy, reliability or fitness for particular purpose of its content and the products and services presented therein.
Page 3 Version log Version log Version code Description Date ESIE20-11 Document release January 2021 RXM20~71R + ARXM25~71R + FTXM20~71R + ATXM25~50R + Service manual FVXM25~50A Split New Perfera R32 ESIE20-11 – 2021.01...
Page 4: Table Of Contents
Table of Contents Table of Contents 1 General operation 2 Troubleshooting To display the error code on the user interface ......................To reset the error code via remote controller ....................... To reset the error code via outdoor unit ........................To perform a test run..............................2.4.1 To perform a test run using the user interface .....................
Page 5 Table of Contents 3.3.2 Repair procedures ............................68 Damper motor ................................71 3.4.1 Checking procedures ............................71 3.4.2 Repair procedures ............................73 Expansion valve................................75 3.5.1 Checking procedures ............................75 3.5.2 Repair procedures ............................79 High pressure switch............................... 85 3.6.1 Checking procedures ............................
Page 6 Table of Contents To clean the air filters ..............................216 To clean the titanium apatite deodorising filter and the silver allergen removal air purifying filter ......219 To replace the titanium apatite deodorising filter and the silver allergen removal air purifying filter ......220 6 Technical data Detailed information setting mode ..........................
Page 7: General Operation
General operation 1 General operation The Split New Perfera is typically used for cooling or heating in residential applications. The medium which is used to transfer the heat from inside to outside or vice versa, is refrigerant R32. a Compressor b Indoor heat exchanger c Expansion valve d Outdoor heat exchanger...
Page 8: Troubleshooting
Troubleshooting 2 Troubleshooting 2.1 To display the error code on the user interface 1 Hold for about 5 seconds. Result: blinks in the temperature display section. 2 Press repeatedly until a continuous beep is heard. Result: The code is now displayed on the display. INFORMATION ▪...
Page 9: To Perform A Test Run Using The User Interface
Troubleshooting 2.4.1 To perform a test run using the user interface Floor standing units 1 Press to switch the system on. 2 Press the middle of simultaneously. 3 Press twice to choose and confirm selection by pressing Result: on the display indicates that the test run is selected. Test run operation will stop automatically after about 30 minutes.
Page 10: A5-00 - Outdoor Unit: High Pressure Peak Cut / Freeze Protection Problem
Troubleshooting INFORMATION If all procedures listed above have been performed and the problem is still present, contact the helpdesk. 2.5.2 A5-00 – Outdoor unit: High pressure peak cut / freeze protection problem Trigger Effect Reset During cooling operation, Unit will stop operating. Automatic reset when indoor heat exchanger temperature is within...
Page 11: A6-00 - Indoor Unit Fan Motor Abnormality
Troubleshooting 2.5.3 A6-00 – Indoor unit fan motor abnormality Trigger Effect Reset The rotation speed of the Unit will stop operating. Power reset via the fan motor is NOT outdoor unit. detected while the output voltage to the fan is at its maximum.
Page 12: C4-00 - Heat Exchanger Temperature Sensor Problem
Troubleshooting 2.5.5 C4-00 – Heat exchanger temperature sensor problem Trigger Effect Reset Refrigerant liquid Unit will stop operating. Power reset. thermistor detects an open or short circuit during compressor operation. To solve the error code INFORMATION It is recommended to perform the checks in the listed order. 1 Perform a check of the indoor unit heat exchanger thermistor.
Page 13: Humidity Sensor Abnormality
Troubleshooting 2.5.7 CC-00 – Humidity sensor abnormality Trigger Effect Reset ▪ Disconnected sensor Unit will stop operating. Manual reset via user interface. ▪ Broken sensor ▪ Communication error To solve the error code INFORMATION It is recommended to perform the checks in the listed order. 1 Perform a check of the humidity sensor.
Page 14: E3-00 - Outdoor Unit: Actuation Of High Pressure Switch
Troubleshooting DANGER: RISK OF ELECTROCUTION Wait for at least 10 minutes after the circuit breaker has been turned OFF, to be sure the rectifier voltage is below 10 V DC before proceeding. 6 Check that the thermal interface grease is applied properly on the (PCB or refrigerant piping) contact surface of the heat sink.
Page 15: E5-00 - Outdoor Unit: Overheat Of Inverter Compressor Motor
Troubleshooting Possible cause: Clogged refrigerant circuit. 7 Perform a check of the outdoor unit fan motor. See "3.13 Outdoor unit fan motor" [ 140]. Possible cause: Faulty outdoor unit fan motor. INFORMATION If all procedures listed above have been performed and the problem is still present, contact the helpdesk.
Page 16: E6-00 - Outdoor Unit: Compressor Startup Defect
Troubleshooting Possible cause: Clogged refrigerant circuit. INFORMATION If all procedures listed above have been performed and the problem is still present, contact the helpdesk. 2.5.11 E6-00 – Outdoor unit: Compressor startup defect Trigger Effect Reset The motor rotor does Unit will NOT stop Automatic reset after a NOT rotate when the operating.
Page 17: E7-00 - Outdoor Unit: Malfunction Of Outdoor Unit Fan Motor
Troubleshooting INFORMATION If all procedures listed above have been performed and the problem is still present, contact the helpdesk. 2.5.12 E7-00 – Outdoor unit: Malfunction of outdoor unit fan motor Trigger Effect Reset Fan does NOT start Unit will stop operating. Manual reset via user 15~30 seconds after ON interface.
Page 18: Outdoor Unit: Cool/Heat Switchover Problem
Troubleshooting Possible cause: Faulty main PCB. 4 Check if the power supply is conform with the regulations. See "4.1 Electrical circuit" [ 202]. Possible cause: ▪ Faulty or disturbance of the power supply (imbalance >4%), ▪ Power drop, ▪ Short circuit. INFORMATION If all procedures listed above have been performed and the problem is still present, contact the helpdesk.
Page 19: F3-00 - Outdoor Unit: Malfunction Of Discharge Pipe Temperature
Troubleshooting Possible cause: Non‑condensables and/or humidity in the refrigerant circuit. INFORMATION If all procedures listed above have been performed and the problem is still present, contact the helpdesk. 2.5.15 F3-00 – Outdoor unit: Malfunction of discharge pipe temperature Trigger Effect Reset Discharge pipe thermistor Unit will NOT stop...
Page 20: F6-00 - Outdoor Unit: Abnormal High Pressure In Cooling
Troubleshooting 2.5.16 F6-00 – Outdoor unit: Abnormal high pressure in cooling Trigger Effect Reset Outdoor heat exchanger Unit will NOT stop Automatic reset when thermistor measures a operating. temperature drops. too high temperature. To solve the error code INFORMATION It is recommended to perform the checks in the listed order. 1 Clean the outdoor heat exchanger.
Page 21: H0-00 - Outdoor Unit: Voltage/Current Sensor Problem
Troubleshooting To solve the error code INFORMATION It is recommended to perform the checks in the listed order. 1 Check that all stop valves of the refrigerant circuit are open. See "4.2 Refrigerant circuit" [ 204]. Possible cause: Closed stop valve in the refrigerant circuit. 2 Check if the refrigerant circuit is correctly charged.
Page 22: H3-00 - Outdoor Unit: Malfunction Of High Pressure Switch
Troubleshooting DANGER: RISK OF ELECTROCUTION Wait for at least 10 minutes after the circuit breaker has been turned OFF, to be sure the rectifier voltage is below 10 V DC before proceeding. 4 Check that the thermal interface grease is applied properly on the (PCB or refrigerant piping) contact surface of the heat sink.
Page 23: H6-00 - Outdoor Unit: Malfunction Of Position Detection Sensor
Troubleshooting 2.5.20 H6-00 – Outdoor unit: Malfunction of position detection sensor Trigger Effect Reset Compressor fails to start Unit will NOT stop Automatic reset after a within 15 seconds after operating. continuous operation of the compressor run 10 minutes. command signal is sent. If the error re-occurs Manual reset via user within 8 minutes: unit will...
Page 24: H8-00 - Outdoor Unit: Malfunction Of Compressor Input System
Troubleshooting 2.5.21 H8-00 – Outdoor unit: Malfunction of compressor input system Trigger Effect Reset DC voltage or current Unit will NOT stop Automatic reset when sensor abnormality based operating. compressor runs normally on the compressor for 60 minutes. running frequency and If the error re-occurs too Manual reset via user the input current.
Page 25: J3-00 - Outdoor Unit: Malfunction Of Discharge Pipe Thermistor
Troubleshooting 2.5.23 J3-00 – Outdoor unit: Malfunction of discharge pipe thermistor Trigger Effect Reset Discharge pipe thermistor Unit will stop operating. Manual reset via user input is out of range. interface. To solve the error code INFORMATION It is recommended to perform the checks in the listed order. 1 Perform check discharge...
Page 26: L4-00 - Outdoor Unit: Malfunction Of Inverter Radiating Fin Temperature Rise
Troubleshooting To solve the error code INFORMATION It is recommended to perform the checks in the listed order. 1 Perform a check of the main PCB. See "3.12 Main PCB" [ 123]. Possible cause: Faulty main PCB. 2 Perform a check of the outdoor unit fan motor. See "3.13 ...
Page 27: L5-00 - Outdoor Unit: Inverter Instantaneous Overcurrent
Troubleshooting DANGER: RISK OF ELECTROCUTION Wait for at least 10 minutes after the circuit breaker has been turned OFF, to be sure the rectifier voltage is below 10 V DC before proceeding. 5 Check that the thermal interface grease is applied properly on the (PCB or refrigerant piping) contact surface of the heat sink.
Page 28: P4-00 - Outdoor Unit: Malfunction Of Radiating Fin Temperature Sensor
Troubleshooting Prerequisite: Stop the unit operation via the user interface. 8 Turn OFF the respective circuit breaker. DANGER: RISK OF ELECTROCUTION Wait for at least 10 minutes after the circuit breaker has been turned OFF, to be sure the rectifier voltage is below 10 V DC before proceeding. 9 Check that the thermal interface grease is applied properly on the (PCB or refrigerant piping) contact surface of the heat sink.
Page 29: U2-00 - Outdoor Unit: Defect Of Power Supply Voltage
Troubleshooting 2 Check that all stop valves of the refrigerant circuit are open. See "4.2 Refrigerant circuit" [ 204]. Possible cause: Closed stop valve in the refrigerant circuit. 3 Check if the refrigerant circuit is clogged. See "4.2 Refrigerant circuit" [ 204]. Possible cause: Clogged refrigerant circuit. 4 Check if the refrigerant circuit is correctly charged.
Page 30: U4-00 - Indoor/Outdoor Unit Communication Problem
Troubleshooting 3 Perform a check of the outdoor unit fan motor. See "3.13 Outdoor unit fan motor" [ 140]. Possible cause: Faulty outdoor unit fan motor. 4 Perform a check of the main PCB. See "3.12 Main PCB" [ 123]. Possible cause: Faulty main PCB. 5 Wait until the compressor restarts.
Page 31: Indoor Unit, Outdoor Unit Mismatching Problem
Troubleshooting 7 Turn OFF the respective circuit breaker. DANGER: RISK OF ELECTROCUTION Wait for at least 10 minutes after the circuit breaker has been turned OFF, to be sure the rectifier voltage is below 10 V DC before proceeding. 8 Check that the thermal interface grease is applied properly on the (PCB or refrigerant piping) contact surface of the heat sink.
Page 32: Malfunction Of System
Troubleshooting 2.5.33 UH-00 – Malfunction of system Trigger Effect Reset In case of connection with Unit will stop operating. Auto reset. multi indoor units, when error UA, U0 or A5 occurs in other indoor unit. To solve the error code INFORMATION It is recommended to perform the checks in the listed order.
Page 33: Symptom Based Troubleshooting
Troubleshooting 2.6 Symptom based troubleshooting 2.6.1 Operation does not start Check Detail When the operation lamp is off, there is ▪ Is the power supply breaker ON? a power failure. ▪ Do other electrical appliances work? Check the power supply. ▪...
Page 34: Operation Starts But The Unit Does Not Cool/Heat
Troubleshooting Check Detail Check the outdoor temperature. ▪ Heating operation cannot be used when the outdoor temperature is 18°C WB or higher. ▪ Cooling operation cannot be used when the outdoor temperature is below –10°C DB. When the operation lamp blinks, there "2.5 Error based may be an error code, activating the troubleshooting" [...
Page 35: Operating Noise And Vibrations
Troubleshooting Check Detail Check the installation conditions ▪ Does installed model (specified in the installation manual). sufficient capacity? ▪ Is there a short circuit air flow caused by insufficient installation space? Check the outdoor temperature. ▪ Heating operation cannot be used when the outdoor temperature is 18°C WB or higher.
Page 36: Abnormal High Pressure
Troubleshooting 2.6.5 Abnormal high pressure In cooling mode Check item Detail Does the outdoor unit fan run Visual inspection normally? Is the outdoor unit heat exchanger Visual inspection clogged? Is there clogging before or after the ▪ Check if there is a temperature expansion valve (capillary)? difference before and after expansion valve (capillary).
Page 37: Abnormal Low Pressure
Troubleshooting Check item Detail Is the refrigerant overcharged? Conduct refrigerant collection and vacuum drying, and then add proper amount refrigerant. 2.6.6 Abnormal low pressure Abnormally low pressure level is mostly caused by the evaporator side. The following contents are provided based on field checking of service engineer. Further, the number is listed in the order of degree of influence.
Page 38: Indoor Fan Starts Operating But The Compressor Does Not Operate
Troubleshooting Check item Detail Is the outdoor unit installed under such Visual inspection conditions that short circuit easily occurs? Is there a shortage of refrigerant? Conduct refrigerant collection and vacuum drying, and then add proper amount refrigerant. 2.6.7 Indoor fan starts operating but the compressor does not operate Check Detail Check the power supply.
Page 39: Operation Starts And The Unit Stops Immediately
Troubleshooting 2.6.8 Operation starts and the unit stops immediately Check Detail Check the power supply. ▪ Is the capacity of the safety breaker as specified? ▪ If the earth leakage breaker is too sensitive, then increase the set value of the earth leakage current of the breaker or replace the breaker.
Page 40: Unit Discharges White Mist
Ceiling too high for the floor size. ▪ Short circuit air flow caused by insufficient installation space. Check the installation. ▪ Is the proper humidification hose, specified by Daikin, used? ▪ Breakage blockage humidification hose. ▪ Is the length of the humidification hose correct (within specified length)? ▪...
Page 41: Components
Components 3 Components CAUTION When replacing a component ALWAYS make sure the correct spare part for your unit is installed. 3.1 4-way valve 3.1.1 Checking procedures INFORMATION It is recommended to perform the checks in the listed order. To perform a mechanical check of the 4-way valve Prerequisite: Stop the unit operation via the user interface.
Page 42 Components When outdoor temperature is mild and unit can switch between heating and cooling INFORMATION This procedure is ONLY possible when the outdoor temperature is within the temperature range for both Heating and Cooling operation mode. See the databook on Business Portal for the temperature range of the operation modes. 3 Connect the 4‑way valve connector to the appropriate PCB.
Page 43 Components Class Voltage Class 20~35 12 V DC when operating in Heating mode 0 V DC when operating in Cooling mode Class 42~71 220~240 V AC when operating in Heating mode 0 V AC when operating in Cooling mode Is the measured voltage correct? Action Perform a position check of the 4-way valve, see "Checking procedures" [...
Page 44 Components Refrigerant pressure correct? Action Leaks may be found in the refrigerant circuit. Perform a pressure test of the refrigerant circuit, see "Checking procedures" [ 204]. 5 De-activate Heating and activate Cooling operation via the user interface. 6 Check with a contact thermometer (or by touching) if the flow through the 4- way valve corresponds with the flow shown in the flow diagram.
Page 45: Repair Procedures
Components 3.1.2 Repair procedures To remove the 4-way valve coil Prerequisite: Stop the unit operation via the user interface. Prerequisite: Turn OFF the respective circuit breaker. Prerequisite: Remove the required plate work, see "3.14 Plate work" [ 151]. Prerequisite: If needed, remove any parts to create more space for the removal of the 4‑way valve coil.
Page 46 Components 1 Remove the 4‑way valve coil from the 4‑way valve body, see "Repair procedures" [ 45]. 2 Cut the 4‑way valve pipes using a pipe cutter. INFORMATION The cutting locations of the 4‑way valve pipes can differ due to the pipe cutter needing sufficient space to go around the pipes.
Page 47 Components To install the 4-way valve body 1 Install the 4‑way valve in the correct location. INFORMATION If any refrigerant pipes were cut during removal of the 4‑way valve body, ALWAYS install new pipes. 2 Supply nitrogen to the refrigerant circuit. The nitrogen pressure MUST NOT exceed 0.02 MPa.
Page 48 Components 5 Install the putty (if available) and the insulation (if available) in their original location. 6 Install the 4‑way valve coil on the 4‑way valve body, see "Repair procedures" [ 45]. 7 Add refrigerant to the refrigerant circuit, see "Repair procedures" [ 209].
Page 49: Compressor
Components Is the problem solved? Action No further actions required. Return to the troubleshooting of the specific error and continue with the next procedure. 3.2 Compressor 3.2.1 Checking procedures INFORMATION It is recommended to perform the checks in the listed order. To perform an auditive check of the compressor Prerequisite: Stop the unit operation via the user interface.
Page 50 Components 1 Turn OFF the respective circuit breaker. 2 Visually check: ▪ For oil drops around the compressor. Locate and fix as needed. ▪ Pipes for signs of damage. Replace pipes as needed. 3 Check that the compressor bolts are correctly fixed. Fix as needed. 4 Check that the compressor wire terminals cover is correctly installed and fixed.
Page 51 Components A Class 20~35 unit a Compressor wire terminals cover A Class 42~71 unit a Compressor wire terminals cover a Compressor wire terminals cover 3 Disconnect the Faston connectors from the compressor wire terminals U, V and W. RXM20~71R + ARXM25~71R + FTXM20~71R + ATXM25~50R + Service manual FVXM25~50A Split New Perfera R32...
Page 52 Components INFORMATION Note the position of the Faston connectors on the compressor wire terminals to allow correct connection during installation. U Wire terminal U V Wire terminal V W Wire terminal W CAUTION Before measuring the compressor motor windings resistance, measure the resistance of the multimeter probes by holding the probes against each other.
Page 53 Components U Wire terminal U V Wire terminal V W Wire terminal W 7 Install the compressor insulation. 8 Turn ON the power using the respective circuit breaker. 9 Start the unit operation via the user interface. 10 Wait for – or create condition to operate the compressor. 11 Once the compressor operates, measure the U-V-W inverter voltages.
Page 54 Components 2 Remove the cover of the compressor wire terminals. A Class 20~35 unit a Compressor wire terminals cover A Class 42~71 unit a Compressor wire terminals cover a Compressor wire terminals cover 3 Disconnect the Faston connectors from the compressor wire terminals U, V and W.
Page 55: Repair Procedures
Components INFORMATION Note the position of the Faston connectors on the compressor wire terminals to allow correct connection during installation. U Wire terminal U V Wire terminal V W Wire terminal W 4 Set the Megger voltage to 500 V DC or 1000 V DC. 5 Measure the insulation resistance between the following terminals.
Page 56 Components a String b Body jacket (outer) c Top insulation d Secondary (inner) body jacket 2 Open the body jacket. 3 Remove the top insulation from the compressor. 4 Open the secondary body jacket from the compressor. 5 Remove the body jackets from the compressor. 6 To install the compressor insulation, see "Repair procedures" [...
Page 57 Components Prerequisite: Recuperate the refrigerant from the refrigerant circuit, see "Repair procedures" [ 209]. 1 If needed, remove any parts to create more space for the removal of the compressor. DANGER: RISK OF ELECTROCUTION Wait for at least 10 minutes after the circuit breaker has been turned OFF, to be sure the rectifier voltage is below 10 V DC before proceeding.
Page 58 Components a Compressor wire terminals cover 3 Disconnect the Faston connectors from the compressor wire terminals U, V and W. INFORMATION Note the position of the Faston connectors on the compressor wire terminals to allow correct connection during installation. U Wire terminal U V Wire terminal V W Wire terminal W 4 Remove the compressor thermal protector, see...
Page 59 Components A Class 20~35 unit a Compressor pipe A Class 42~71 unit a Compressor pipe a Compressor pipe 7 Supply nitrogen to the refrigerant circuit. The nitrogen pressure MUST NOT exceed 0.02 MPa. RXM20~71R + ARXM25~71R + FTXM20~71R + ATXM25~50R + Service manual FVXM25~50A Split New Perfera R32...
Page 60 Components 8 Heat the ends of the compressor pipes using an oxygen acetylene torch and remove the compressor pipe ends. 9 Stop the nitrogen supply when the piping has cooled down. 10 Remove the all the nuts and remove the compressor from the unit. A Class 20~35 unit a Nut b Compressor...
Page 61 Components c Damper 11 Remove the 3 dampers from the compressor. INFORMATION The compressor dampers may look different. 12 Remove the bushings and keep them for re-use. 13 To install the compressor, see "Repair procedures" [ 55]. To install the compressor 1 Check the state of the dampers.
Page 62 Components a Nut b Compressor c Damper INFORMATION The compressor dampers may look different. 3 Remove the caps from the compression pipe and suction pipe. CAUTION The oil in the compressor is hygroscopic. Therefore remove the caps from the compressor pipes as late as possible. 4 Supply nitrogen to the refrigerant circuit.
Page 63 Components A Class 42~71 unit a Compressor pipe a Compressor pipe CAUTION Overheating the compressor pipes (and the oil inside the compressor pipes) will damage or destroy the compressor. 6 After soldering is done, stop the nitrogen supply after the component has cooled‑down.
Page 64 Components U Wire terminal U V Wire terminal V W Wire terminal W 10 Install the cover of the compressor wire terminals. A Class 20~35 unit a Compressor wire terminals cover A Class 42~71 unit RXM20~71R + ARXM25~71R + FTXM20~71R + ATXM25~50R + Service manual FVXM25~50A Split New Perfera R32...
Page 65: Compressor Thermal Protector
Components a Compressor wire terminals cover a Compressor wire terminals cover 11 Add refrigerant to the refrigerant circuit, see "Repair procedures" [ 209]. 12 Install the compressor insulation, see "Repair procedures" [ 55]. Is the problem solved? Action No further actions required. Return to the troubleshooting of the specific error and continue with the next procedure.
Page 66 Components A Class 20~35 unit a Compressor wire terminals cover A Class 42~71 unit a Compressor wire terminals cover a Compressor wire terminals cover 2 Remove the compressor thermal protection with bracket from the compressor. RXM20~71R + ARXM25~71R + FTXM20~71R + ATXM25~50R + Service manual FVXM25~50A Split New Perfera R32...
Page 67 Components a Compressor thermal protector b Faston connector c Bracket 3 If in doubt, measure the temperature of the compressor thermal protection. Result: The temperature MUST be below 85°C. 4 Disconnect the Faston connectors from the compressor thermal protection. INFORMATION Make sure that the wiring between the compressor thermal protector connector and the connector on the PCB is properly connected and NOT damaged (check continuity), see...
Page 68: Repair Procedures
Components 3.3.2 Repair procedures To remove the compressor thermal protector Prerequisite: Stop the unit operation via the user interface. Prerequisite: Turn OFF the respective circuit breaker. Prerequisite: Remove the required plate work, see "3.14 Plate work" [ 151]. Prerequisite: Remove the compressor insulation. 1 Remove the cover of the compressor wire terminals.
Page 69 Components a Compressor wire terminals cover 2 Remove the compressor thermal protector with bracket from the compressor housing. a Compressor thermal protector b Faston connector c Bracket 3 Disconnect the Faston connectors from the compressor thermal protector. 4 Separate the compressor thermal protector and the compressor thermal protector bracket.
Page 70 Components To install the compressor thermal protector 1 Install the compressor thermal protector on the compressor thermal protector bracket. a Compressor thermal protector b Compressor thermal protector bracket 2 Connect the Faston connectors to the compressor thermal protector. a Compressor thermal protector b Faston connector c Bracket 3 Install the compressor thermal protector in the compressor housing.
Page 71: Damper Motor
Components A Class 20~35 unit a Compressor wire terminals cover A Class 42~71 unit a Compressor wire terminals cover a Compressor wire terminals cover 5 Install the compressor insulation, see "Repair procedures" [ 55]. Is the problem solved? Action No further actions required. Return to the troubleshooting of the specific error and continue with the next procedure.
Page 72 Components 1 Disconnect the damper motor connector S400 from the indoor unit main PCB. 2 Measure the resistance between the following pins of the damper motor connector. Result: The measurements MUST be as shown in the table below. Pins Measured resistance (Ω) 139.5~160.5 1-13 1-14...
Page 73: Repair Procedures
Components Damper motor resistance Action measurements are correct? Replace the damper motor, see "Repair procedures" [ 73]. 3.4.2 Repair procedures To remove the damper motor Prerequisite: Stop the unit operation via the user interface. Prerequisite: Turn OFF the respective circuit breaker. Prerequisite: Remove the required plate work, see "3.14 Plate work" [...
Page 74 Components a Screw (drain hose) b Drain hose c Screw (damper motor cover) d Damper motor cover e Screw (damper motor) f Damper motor g Damper motor wiring harness 3 Install the damper motor cover in the correct location on the indoor unit. Make sure that the damper motor shaft is correctly inserted in the gear.
Page 75: Expansion Valve
Components 3 Disconnect the damper motor wiring harness from the indoor unit main PCB. 4 To install the damper motor wiring harness, see "Repair procedures" [ 73]. To install the damper motor wiring harness 1 Connect the damper motor wiring harness to the indoor unit main PCB. WARNING When reconnecting a connector to the PCB, make sure to connect it on the correct location and do NOT apply force, as this may damage the connector or connector...
Page 76 Components To perform a mechanical check of the expansion valve Prerequisite: Power OFF the unit for 3 minutes. Then turn ON the unit and listen to the expansion valve assembly. If the expansion valve does NOT make a latching sound, continue with the electrical check of the expansion valve, see "Checking procedures" [ 75].
Page 77 Components INFORMATION Below is an example of the resistance measurements in which the common wire is connected to pin 6 of the expansion valve coil connector. Connections may differ according to the type of expansion valve. ▪ Connector pin 1‑6, ▪...
Page 78 Components 4 When the expansion valve is closed according to the service monitoring tool, check the inlet and outlet of the valve with a contact thermometer or use an expansion valve stethoscope to see if refrigerant flows through the expansion valve.
Page 79: Repair Procedures
Components Is the problem solved? Action Return to the troubleshooting of the specific error and continue with the next procedure. 3.5.2 Repair procedures To remove the expansion valve motor Prerequisite: Stop the unit operation via the user interface. Prerequisite: Turn OFF the respective circuit breaker. Prerequisite: Remove the required plate work, see "3.14 Plate work" [...
Page 80 Components a Expansion valve motor b Expansion valve motor harness INFORMATION The expansion valve and motor can have a different configuration / layout. 4 Cut all tie straps that fix the expansion valve motor harness. 5 Disconnect the expansion valve motor connector from the main PCB. 6 Pull up the expansion valve motor to remove it from the expansion valve body.
Page 81 Components a Expansion valve motor b Expansion valve motor harness 7 Cut all tie straps that fix the expansion valve motor harness. 8 Disconnect the expansion valve motor connector S20 from the main PCB. 9 Remove the expansion valve motor (and harness) from the unit. 10 To install the expansion valve motor, see "Repair procedures" [...
Page 82 Components a Expansion valve pipe b Expansion valve body INFORMATION The expansion valve and motor can have a different configuration / layout. 3 Remove the putty. Keep for re-use. A Class 20~35 unit a Putty b Expansion valve pipe c Expansion valve body A Class 42~71 unit a Putty b Expansion valve pipe...
Page 83 Components 6 Supply nitrogen to the refrigerant circuit. The nitrogen pressure MUST NOT exceed 0.02 MPa. 7 Heat the ends of the expansion valve pipes using an oxygen acetylene torch and remove the expansion valve pipe ends. 8 Stop the nitrogen supply when the piping has cooled down. 9 To install the expansion valve body, see "Repair procedures" [...
Page 84 Components INFORMATION The expansion valve and motor can have a different configuration / layout. 5 Reinstall the putty. A Class 20~35 unit a Putty b Expansion valve pipe c Expansion valve body A Class 42~71 unit a Putty b Expansion valve pipe c Expansion valve body 6 Reinstall the putty.
Page 85: High Pressure Switch
Components a Expansion valve motor b Pipe retention clip c Pipe 2 Route the expansion valve motor harness towards the appropriate PCB. 3 Connect the expansion valve motor connector to the appropriate PCB. WARNING When reconnecting a connector to the PCB, make sure to connect it on the correct location and do NOT apply force, as this may damage the connector or connector pins of the PCB.
Page 86 Components a High pressure switch protection control b Pressure c High pressure switch closed d High pressure switch open e High pressure switch operating pressure f High pressure switch reset pressure High pressure switch Operating pressure (MPa) Reset pressure (MPa) S1PH 4.15 3 Disconnect the Faston connectors from the high pressure switch.
Page 87: Repair Procedures
Components High pressure switch connector Then measurements are correct? High pressure switch is OK. Return to the troubleshooting of the specific error and continue with the next procedure. Replace the high pressure switch, see "Repair procedures" [ 87]. 3.6.2 Repair procedures To remove the high pressure switch Prerequisite: Stop the unit operation via the user interface.
Page 88: Humidity Sensor
Components 2 Supply nitrogen to the refrigerant circuit. The nitrogen pressure MUST NOT exceed 0.02 MPa. 3 Wrap a wet rag around the high pressure switch and solder the high pressure switch pipe to the refrigerant pipe. a High pressure switch b Faston connector c High pressure switch pipe CAUTION...
Page 89: Repair Procedures
Components 2 Turn ON the power of the unit. 3 Measure the power supply voltage between the pins 1‑4 on the humidity sensor connector CN. Result: The measured voltage MUST be 5 V DC. a Humidity sensor (PCB) Is the measured power supply voltage Action correct? Skip the next step..
Page 90 Components Prerequisite: Remove the required plate work, see "3.14 Plate work" [ 151]. 1 Disconnect the connector from the humidity sensor PCB. 2 Cut the tie strap that fixes the thermistor. 3 Carefully click the complete humidity sensor PCB assembly out of the indoor unit.
Page 91: Indoor Unit Fan Motor
Components To remove the humidity sensor wiring harness Prerequisite: Stop the unit operation via the user interface. Prerequisite: Turn OFF the respective circuit breaker. Prerequisite: Remove the required plate work, see "3.14 Plate work" [ 151]. 1 Disconnect the wiring harness from the humidity sensor (PCB). 2 Disconnect the wiring harness connector from the indoor unit main PCB.
Page 92 Components 3 Manually rotate the fan and check the friction of the DC fan motor shaft bearing. Is the DC fan motor shaft friction Action normal? Perform an electrical check of the DC fan motor assembly, see "Checking procedures" [ 91]. Replace the DC fan motor assembly, see "Repair procedures" [...
Page 93 Components A Class 20~42 unit a Indoor unit fan motor cover A Class 50~71 unit a Indoor unit fan motor cover 3 Remove the rubber from the indoor unit. 4 Remove the indoor unit fan motor from the indoor unit. 5 To install the indoor unit fan motor, see "Repair procedures" [...
Page 94: Floor Standing Indoor Units
Components A Class 20~42 unit a Indoor unit fan motor cover A Class 50~71 unit a Indoor unit fan motor cover 4 Install the switch box, see "3.14 Plate work" [ 151]. Is the problem solved? Action No further actions required. Return to the troubleshooting of the specific error and continue with the next procedure.
Page 95 Components To perform a mechanical check of the turbo fan assembly Prerequisite: Stop the unit operation via the user interface. Prerequisite: Turn OFF the respective circuit breaker. Prerequisite: Remove the required plate work, see "3.14 Plate work" [ 151]. 1 Remove the swing flap (by clicking it out). 2 Remove the air outlet protection net to create access to the turbo fan.
Page 96 Components To perform an electrical check of the DC fan motor assembly 1 First perform a mechanical check of the DC fan motor assembly, see "Checking procedures" [ 94]. 2 Turn ON the power of the unit. 3 Activate Cooling or Heating operation via the user interface. 4 Check the functioning of the turbo fan.
Page 97 Components a Screw (upper air outlet assy) b Upper air outlet assy c Drain hose d Damper motor wiring harness e Screw (tie strap) f Screw (lower air outlet assy) g Lower air outlet assy 4 Put a small drain pan (or container) under the drain hose. 5 Remove the screw from the fixation bracket and pull the drain hose downwards to remove it from the indoor unit.
Page 98 Components 11 Remove the screw and disconnect the ground wire from the indoor unit heat exchanger. 12 Unfasten the 2 hooks on the left side of the indoor heat exchanger. a Hook (left side) b Hook (right side) c Indoor unit heat exchanger 13 Unfasten the 2 hooks on the right side of the indoor heat exchanger and remove the indoor unit heat exchanger.
Page 99 Components 2 Cut the tie strap and unlock the ferrite core. a Ferrite core b DC fan motor wiring harness c Hook d Screw (fan motor cover) e Fan motor cover f Wiring harness retainer 3 Route the DC fan motor wiring harness out of the hooks. 4 Remove the 3 screws and remove the fan motor cover.
Page 100 Components c Hook d Screw (fan motor cover) e Fan motor cover f Wiring harness retainer 4 Route the DC fan motor wiring harness through the hooks and install the harness retainer. Make sure the wiring harness is also routed through the hooks located behind the harness retainer.
Page 101 Components a Hook (left side) b Hook (right side) c Indoor unit heat exchanger 6 Route the fan motor ground wire in front of the indoor unit heat exchanger. 7 Carefully move the indoor unit heat exchanger to the correct position and install it on the 2 hooks on the left side.
Page 102: Indoor Unit Main Pcb
Components a Screw (upper air outlet assy) b Upper air outlet assy c Drain hose d Damper motor wiring harness e Screw (tie strap) f Screw (lower air outlet assy) g Lower air outlet assy 13 Route the damper motor wiring harness through the appropriate harness retainers.
Page 103 Components Prerequisite: Remove the required plate work, see "3.14 Plate work" [ 151]. 1 Turn ON the power of the unit. 2 Measure the voltage between the pins 1‑4 of the connector S300A on the innndoor unit main PCB. Result: The measured voltage MUST be 324 V DC. A Wall mounted indoor unit a Connector S300A A Floor standing indoor unit...
Page 104 Components 3 Measure the output voltage between the pins 1‑4 of the connector S102 on the innndoor unit power PCB. Result: The measured voltage MUST be 324 V DC. Output voltage on indoor unit power Action PCB correct? Correct the wiring between the indoor unit main PCB and indoor unit power PCB, see "Repair...
Page 105 Components To check if the correct spare part is installed Prerequisite: First perform all earlier checks of the indoor unit main PCB, see "Checking procedures" [ 102]. 1 Visit your local spare parts webbank. 2 Enter the model name of your unit and check if the installed spare part number corresponds with the spare part number indicated in the webbank.
Page 106: Repair Procedures
Components 3.9.2 Repair procedures To remove the indoor unit main PCB Prerequisite: Stop the unit operation via the user interface. Prerequisite: Turn OFF the respective circuit breaker. Prerequisite: Remove the required plate work, see "3.14 Plate work" [ 151]. 1 Disconnect all connectors from the indoor unit main PCB. 2 Carefully click the indoor unit main PCB out of the PCB retainers.
Page 107 Components a Indoor unit main PCB b PCB support 3 Remove the indoor unit main PCB from the indoor unit. 4 To install the indoor unit main PCB, see "Repair procedures" [ 106]. To install the indoor unit main PCB 1 Install the indoor unit main PCB in the correct location in the switch box. Make sure the PCB is correctly fixed by the PCB retainers.
Page 108 Components A Wall mounted indoor unit a Indoor unit main PCB A Floor standing indoor unit a Indoor unit main PCB RXM20~71R + ARXM25~71R + FTXM20~71R + ATXM25~50R + Service manual FVXM25~50A Split New Perfera R32 ESIE20-11 – 2021.01...
Page 109 Components a Indoor unit main PCB b PCB support 2 Connect all connectors to the indoor unit main PCB. INFORMATION Use the wiring diagram and connection diagram for correct installation of the connectors, see "6.2 Wiring diagram" [ 223]. WARNING When reconnecting a connector to the PCB, make sure to connect it on the correct location and do NOT apply force, as this may damage the connector or connector pins of the PCB.
Page 110: Indoor Unit Power Pcb
Components Is the problem solved? Action Return to "Checking procedures" [ 102] of the indoor unit main PCB and continue with the next procedure. 3.10 Indoor unit power PCB 3.10.1 Checking procedures INFORMATION It is recommended to perform the checks in the listed order. To perform a power check of the indoor unit power PCB Prerequisite: Stop the unit operation via the user interface.
Page 111 Components A Floor standing indoor unit a Black wire b White wire Is the measured voltage on the indoor Action unit power PCB correct? Return to "Checking procedures" [ 110] of the indoor unit power PCB and continue with the next procedure.
Page 112 Components A Wall mounted indoor unit a Connector S102 A Floor standing indoor unit a Connector S102 Is the measured voltage on the indoor Action unit power PCB correct? Return to "Checking procedures" [ 110] of the indoor unit power PCB and continue with the next procedure.
Page 113 Components Is the correct spare part for the indoor Action unit power PCB installed? Return to "Checking procedures" [ 110] of the indoor unit power PCB and continue with the next procedure. Replace the indoor unit power PCB, see "Repair procedures" [ 115].
Page 114 Components A Wall mounted indoor unit a Fuse F1U A Floor standing indoor unit a Fuse F1U Blown fuse on the indoor unit power Action PCB? Replace the blown fuse, see "Repair procedures" [ 115]. Return to "Checking procedures" [ 102] of the indoor unit power PCB and continue with the next procedure.
Page 115: Repair Procedures
Components 3.10.2 Repair procedures To correct the wiring from the indoor unit power supply terminal to the indoor unit power PCB Prerequisite: Stop the unit operation via the user interface. Prerequisite: Turn OFF the respective circuit breaker. Prerequisite: Remove the required plate work, see "3.14 Plate work" [ 151].
Page 116 Components A Floor standing indoor unit a Indoor unit power PCB 3 Remove the indoor unit power PCB from the indoor unit. 4 To install the indoor unit power PCB, see "Repair procedures" [ 115]. To install the indoor unit power PCB 1 Install the indoor unit power PCB in the correct location in the switch box.
Page 117 Components A Floor standing indoor unit a Indoor unit power PCB 2 Connect all connectors to the indoor unit power PCB. INFORMATION Use the wiring diagram and connection diagram for correct installation of the connectors, see "6.2 Wiring diagram" [ 223]. WARNING When reconnecting a connector to the PCB, make sure to connect it on the correct location and do NOT apply force, as this may damage the connector or connector pins of the PCB.
Page 118 Components A Wall mounted indoor unit a Fuse F1U A Floor standing indoor unit a Fuse F1U 2 To install a fuse on the indoor unit power PCB, see "Repair procedures" [ 115]. To install a fuse on the indoor unit power PCB 1 Install the fuse on the correct location on the PCB.
Page 119: Intelligent Eye Sensor
Components A Wall mounted indoor unit a Fuse F1U A Floor standing indoor unit a Fuse F1U Is the problem solved? Action No further actions required. Return to "Checking procedures" [ 102] of the indoor unit power PCB and continue with the next procedure.
Page 120 Components INFORMATION It is recommended to perform the checks in the listed order. To perform a power check of the intelligent eye sensor Prerequisite: Stop the unit operation via the user interface. Prerequisite: Turn OFF the respective circuit breaker. 1 Remove the required plate work, see "3.14 Plate work" [ 151].
Page 121 Components 1 Leave the intelligent eye sensor connector S602 connected to the indoor unit main PCB. 2 Wave your hand in front of the left side (when facing the indoor unit) of the intelligent eye sensor and measure the voltage between the following pins of the intelligent eye sensor connector S602.
Page 122: Repair Procedures
Components 3.11.2 Repair procedures To remove the intelligent eye sensor Prerequisite: Stop the unit operation via the user interface. Prerequisite: Turn OFF the respective circuit breaker. Prerequisite: Remove the required plate work, see "3.14 Plate work" [ 151]. 1 Remove the control panel from the indoor unit. a Control panel b Intelligent eye sensor PCB 2 Disconnect the connector from the intelligent eye sensor PCB.
Page 123: Main Pcb
Components Is the problem solved? Action Return to the troubleshooting of the specific error and continue with the next procedure. To remove the intelligent eye sensor wiring harness Prerequisite: Stop the unit operation via the user interface. Prerequisite: Turn OFF the respective circuit breaker. Prerequisite: Remove the required plate work, see "3.14 Plate work" [...
Page 124 Components Prerequisite: Remove the required plate work, see "3.14 Plate work" [ 151]. 1 Turn ON the power of the unit. 2 Measure the voltage between the black and white wires. Result: The measured voltage MUST be 230 V AC. a Black wire b White wire Is the measured voltage on the PCB Action correct?
Page 125 Components a HAP LED INFORMATION Make sure the correct software is available on the PCB. If NOT, update using the updater tool. Does the HAP LED blink in regular Action intervals (1 second ON/1 second OFF)? Return to "Checking procedures" [ 123] of the main PCB and continue with the next procedure.
Page 126 Components Is the problem solved? Action Return to "Checking procedures" [ 123] of the PCB and continue with the next procedure. To check the fuse of the main PCB Prerequisite: First perform all earlier main PCB checks, see "Checking procedures" [ 123]. 1 Measure the continuity of the fuse.
Page 127 Components a + terminal b – terminal INFORMATION When measuring on the front of the main PCB, make sure to locally remove the protective varnish with the test leads of the multi meter. Is the measured rectifier voltage Action correct? Perform a check of the power modules, "Checking procedures" [...
Page 128 Components a V DC out (+) b V AC in c V AC in d V DC out (–) INFORMATION When measuring on the front of the main PCB, make sure to locally remove the protective varnish with the test leads of the multi meter. 0.51~0.52 V 0.51~0.52 V 0.51~0.52 V...
Page 129 Components c b a d DC+ e DC– INFORMATION When measuring on the front of the main PCB, make sure to locally remove the protective varnish with the test leads of the multi meter. 0.501 V 0.501 V 0.501 V DC– 0.501 V DC– DC–...
Page 130 Components d DC+ e DC– INFORMATION When measuring on the front of the main PCB, make sure to locally remove the protective varnish with the test leads of the multi meter. 0.475 V 0.475 V 0.475 V DC– 0.475 V DC– DC– 0.475 V DC– DC–...
Page 131 Components Is the problem solved? Action Return to the troubleshooting of the specific error and continue with the next procedure. Repair procedures To remove the main PCB Prerequisite: Stop the unit operation via the user interface. Prerequisite: Turn OFF the respective circuit breaker. Prerequisite: Remove the required plate work, see "3.14 Plate work" [...
Page 132: Class 42~71 Units
Components a Power supply wires from X1M b Wire from X1M c Ground wiring d Connector X11A e Screw f Main PCB 3 Install and tighten the screws. 4 Route the ground wire through the ferrite core. Install the ground wiring on the switch box and fix using the screw.
Page 133 Components 1 Turn ON the power of the unit. 2 Measure the voltage between the black and white wires. Result: The measured voltage MUST be 230 V AC. a Black wire b White wire Is the measured voltage on the PCB Action correct? Return to "Checking...
Page 134 Components INFORMATION Make sure the correct software is available on the PCB. If NOT, update using the updater tool. Does the HAP LED blink in regular Action intervals (1 second ON/1 second OFF)? Return to "Checking procedures" [ 132] of the main PCB and continue with the next procedure.
Page 135 Components To check the fuse of the main PCB Prerequisite: First perform all earlier main PCB checks, see "Checking procedures" [ 132]. 1 Measure the continuity of the fuse. If no continuity is measured, the fuse has blown. a Fuse F1U b Fuse F2U c Fuse F3U Blown fuse on the main PCB?
Page 136 Components INFORMATION When measuring on the front of the main PCB, make sure to locally remove the protective varnish with the test leads of the multi meter. Is the measured rectifier voltage Action correct? Perform a check of the power module, "Checking procedures" [ 132].
Page 137 Components 0.51~0.52 V 0.51~0.52 V 0.51~0.52 V 4 If the diode module is NOT OK, replace the main PCB, see "Repair procedures" [ 138]. To perform a power module check Prerequisite: First check the rectifier voltage of the main PCB, see "Checking procedures" [ 132]. Prerequisite: Stop the unit operation via the user interface.
Page 138 Components DC– 0.501 V DC– DC– 0.501 V DC– Are the test results OK? Action Power module is OK. Return to "Checking procedures" [ 132] of the main PCB and continue with the next procedure. Replace the main PCB, see "Repair procedures" [ 138]. Problem solved? After all checking procedures listed above have been performed: Is the problem solved?
Page 139 Components i Ferrite core (compressor harness) j Screw k Main PCB 3 Remove the screw and remove the ground wiring from the switch box. Route the ground wire out of the ferrite core. 4 If applicable: Disconnect the connector X12A. 5 Disconnect the compressor connector.
Page 140: Outdoor Unit Fan Motor
Components 6 Route the ground wire through the ferrite core. Install the ground wiring on the switch box and fix using the screw. 7 If applicable: Connect the connector X12A. 8 Route the power supply wiring through the ferrite core and connect it to the main power supply terminal X1M.
Page 141 Components 1 Visually check: ▪ For any burnt‑out part or wire. If found, replace the fan motor, see "Repair procedures" [ 142]. ▪ That fan motor fixation bolts are correctly installed and fixed. Correct as needed. 2 Manually rotate the fan motor shaft. Check that it rotates smoothly. 3 Check the friction of the DC fan motor shaft bearing.
Page 142 Components INFORMATION Winding resistance values above are given for reference. You should NOT be reading a value in kΩ or a short‑circuit. Make sure that the propeller fan blade does NOT rotate, as this could affect resistance measurements. 9 Set the Megger voltage to 500 V DC or 1000 V DC. 10 Measure the insulation resistance for the motor terminals.
Page 143 Components a Nut b Propeller fan blade assembly 3 Pull and remove the propeller fan blade assembly from the DC fan motor assembly. INFORMATION Use a pulley remover if the propeller cannot be removed manually. 4 To install the propeller fan blade assembly, see "Repair procedures" [ 142].
Page 144 Components b DC fan motor harness c Switch box d Screw e DC fan motor assy 8 Detach the DC fan motor harness from the switch box. 9 Slightly bend the harness retainers (if applicable) to detach the DC fan motor harness.
Page 145: Class 42~71 Units
Components a Nut b Propeller fan blade assembly Is the problem solved? Action No further actions required. Return to "Checking procedures" [ 140] of the outdoor unit fan motor and continue with the next procedure. 3.13.2 Class 42~71 units Checking procedures INFORMATION It is recommended to perform the checks in the listed order.
Page 146 Components To perform a mechanical check of the DC fan motor assembly Prerequisite: First perform a mechanical check of the propeller fan blade assembly, see "Checking procedures" [ 145]. 1 Visually check: ▪ For any burnt‑out part or wire. If found, replace the fan motor, see "Repair procedures" [ 148].
Page 147 Components 8 Disconnect the DC fan motor connector S70 and measure the resistance on the connector pins shown below. The measured resistance MUST be: Comm Resistance >1 MΩ >100 kΩ >100 Ω >100 kΩ INFORMATION The measured resistance values may deviate from the listed values due to instability during the measurements.
Page 148 Components CAUTION Ensure that the system CANNOT start the fan. Disable all modes (heating, cooling, …) on the unit. The outdoor unit MUST be kept powered. 14 Manually (slowly) rotate the fan blade propeller 1 turn and measure the voltage on the DC fan motor connector pins 1-4. Result: 4 pulses MUST be measured.
Page 149 Components INFORMATION Use a pulley remover if the propeller cannot be removed manually. 4 To install the propeller fan blade assembly, see "Repair procedures" [ 148]. To remove the DC fan motor assembly 1 Remove the propeller fan blade assembly from the DC fan motor assembly, "Repair procedures" [ 148].
Page 150 Components 4 Attach the DC fan motor harness to the switch box. 5 Install a new tie strap to fix the DC fan motor harness to the switch box. 6 Connect the DC fan motor connector to the connector on the main PCB. 7 Lock the ferrite bead.
Page 151: Plate Work
Components a Nut b Propeller fan blade assembly Is the problem solved? Action No further actions required. Return to "Checking procedures" [ 145] of the outdoor unit fan motor and continue with the next procedure. 3.14 Plate work 3.14.1 Outdoor unit To remove the refrigerant connection cover DANGER: RISK OF ELECTROCUTION DANGER: RISK OF BURNING/SCALDING...
Page 152 Components DANGER: RISK OF ELECTROCUTION Wait for at least 10 minutes after the circuit breaker has been turned OFF, to be sure the rectifier voltage is below 10 V DC before proceeding. 2 Loosen and remove the screws that fix the top plate. a Screw b Top plate 3 Remove the top plate.
Page 153 Components a Insulation b Main PCB 2 Disconnect all connectors from the main PCB. 3 Disconnect the electrical power supply wiring from the wire terminals. a Electrical power supply wiring b Wire terminals c Screws d Wire clamp e Screws f Right side plate assembly 4 Remove the screws that fix the wire clamp.
Page 154 Components 5 Remove the wire clamp. 6 Remove the screws that fix the right side plate assembly. 7 Cut the cable tie. a Cable tie b Switch box 8 Lift and remove the switch box from the outdoor unit. 9 To install the switch box, see "3.14 Plate work" [ 151].
Page 155 Components a Electrical power supply wiring b Wire terminals c Screws d Wire clamp e Screws f Right side plate assembly 3 Connect the electrical power supply wiring to the wire terminals. 4 Install the wire clamp and fix it using the screws. 5 Connect all connectors to the main PCB.
Page 156: Indoor Unit
Components a Cable tie b Switch box 7 Install the insulation on the upper side of the switch box. a Insulation b Main PCB 3.14.2 Indoor unit To remove the front panel DANGER: RISK OF ELECTROCUTION Wait for at least 10 minutes after the circuit breaker has been turned OFF, to be sure the rectifier voltage is below 10 V DC before proceeding.
Page 157 Components 2 Open the front panel and remove the string. 3 Remove the front panel. Wall mounted units 1 Hold the front panel by the panel tabs on both sides and open it. 2 Remove the front panel by sliding it to the left or the right and pulling it toward you.
Page 158 Components 4× a Front grille b Tabs Wall mounted units CAUTION Wear adequate personal protective equipment (protective gloves, safety glasses,…) when installing, maintaining or servicing the system. 1 Remove the front panel to remove the air filter. 2 For class 50~71 remove the flap (horizontal blade). Push the blade on its left side to the centre and unhook it.
Page 159 Components To remove the electrical wiring box cover Floor standing units TO OPEN THE TERMINAL BLOCK 1 Remove the front grille. 2 Remove 1 lower screw. 3 Lift the sensor securing plate. 4 Move the metal plate cover down and then towards you to remove it. a Screw b Sensor securing plate c Metal plate cover...
Page 160 Components 2 Pull out the service cover horizontally away from the unit. a Service cover screw b Service cover NOTICE When closing the service cover, make sure that the tightening torque does NOT exceed 1.4 (±0.2) N•m. 1 Remove the front grille. 2 Remove 1 screw from the electrical wiring box.
Page 161 Components A Class 20~42 unit a Power supply terminal X1M b Power supply wiring bracket c Screw (ground wire) d Indoor unit main PCB e Switch box screw f Switch box A Class 50~71 unit a Power supply terminal X1M b Power supply wiring bracket c Screw (ground wire) d Indoor unit main PCB...
Page 162 Components Floor standing indoor units Prerequisite: Stop the unit operation via the user interface. Prerequisite: Turn OFF the respective circuit breaker. Prerequisite: Remove the required plate work, see "3.14 Plate work" [ 151]. 1 Disconnect the power supply wiring from the power supply terminal X1M. 2 Remove the screw and power supply wiring bracket.
Page 163 Components 2× 2× a Front grille b 4 tabs c White head screws (accessory) Wall mounted units 1 Install the front grille and firmly engage the 3 upper hooks. 2 Install 2 screws (class 15~42) or 3 screws (class 50~71) back on the front grille. 3 For class 50~71 re-install the lower flap (horizontal blade).
Page 164 Components Wall mounted units 1 Attach the front panel. Align the shafts with the slots and push them all the way in. 2 Close the front panel slowly; press at both sides and at the centre. To install the switch box Wall mounted indoor units 1 install the switch box in the correct location on the indoor unit.
Page 165 Components A Class 50~71 unit a Power supply terminal X1M b Power supply wiring bracket c Screw (ground wire) d Indoor unit main PCB e Switch box screw f Switch box 2 Route the connectors of the indoor unit fan motor, swing flap motor, swing raster motor and streamer unit inside the switch box and connect them to the indoor unit main PCB.
Page 166: Reactor
Components e Indoor unit main PCB f Switch box screw g Switch box 2 Route the connectors of the indoor unit fan motor, swing flap motor, damper motor, streamer unit and thermistors (air + heat exchanger) inside the switch box and connect them to the indoor unit main PCB. 3 Install and tighten the two screws to secure the switch box.
Page 167 Components 2 Remove the main PCB, see "Repair procedures" [ 131]. The reactor measuring points are ONLY reachable on the back side of the main PCB. 3 Measure the resistance of the reactor using a low ohm multi meter. Result: The resistance MUST be as follows: Measuring points Resistance...
Page 168 Components Is the inductance measurement Action correct? Replace the reactor, see "Repair procedures" [ 169]. Class 42~71 units 1 Check that the reactors are firmly installed on the main PCB. a Reactor L803 b Reactor L804 2 Remove the main PCB, see "Repair procedures" ...
Page 169: Repair Procedures
Components Is the resistance measurement correct? Action Replace the reactor, see "Repair procedures" [ 169]. 4 Measure the inductance of the reactor using an LCR meter. Result: The inductance MUST be as follows: Measuring points Resistance c‑d 88.5~101.5 µH a L803 b L804 c Measuring point d Measuring point Is the inductance measurement...
Page 170: Repair Procedures
Components After complete check of the indoor unit Action main PCB, is the problem solved? Replace the streamer unit, see "Repair procedures" [ 170]. 3.16.2 Repair procedures To remove the streamer unit Prerequisite: Stop the unit operation via the user interface. Prerequisite: Turn OFF the respective circuit breaker.
Page 171 Components To install the streamer unit 1 Install the streamer unit in the correct location on the indoor unit. A Wall mounted indoor unit a Streamer unit connector b Streamer unit A Floor standing indoor unit a Streamer unit connector b Streamer unit 2 Connect the streamer unit harness to the streamer unit.
Page 172: Swing Flap Motor
Components 3.17 Swing flap motor 3.17.1 Wall mounted indoor units - Class 20~42 Checking procedures To perform an electrical check of the swing flap motor Prerequisite: Stop the unit operation via the user interface. Prerequisite: Turn OFF the respective circuit breaker. Prerequisite: Remove the required plate work, see "3.14 Plate work" [...
Page 173 Components a Swing flap b Screw (swing flap motor fixation) c Swing flap motor d Coupling piece 5 Remove the swing flap motor from the coupling piece. 6 To install the swing flap motor, see "Repair procedures" [ 172]. To install the swing flap motor 1 Install the coupling piece on the swing flap motor.
Page 174: Wall Mounted Indoor Units - Class 50~71
Components Is the problem solved? Action Return to the troubleshooting of the specific error and continue with the next procedure. 3.17.2 Wall mounted indoor units - Class 50~71 Checking procedures To perform an electrical check of the swing flap motor Prerequisite: Stop the unit operation via the user interface.
Page 175 Components Pins Measured resistance (Ω) 706.8~813.2 Swing flap motor resistance Action measurements are correct? Replace the swing flap motor wiring harness, see "Repair procedures" [ 175]. Replace the swing flap motor, see "Repair procedures" [ 175]. Repair procedures To remove the swing flap motor Prerequisite: Stop the unit operation via the user interface.
Page 176 Components To install the swing flap motor 1 Connect the wiring harness to the swing flap motor. 2 Install the swing flap motor on the correct location on the indoor unit. Make sure the swing flap motor shaft is correctly inserted in the link. a Main swing flap b Secondary swing flap c Screw (swing flap motor fixation)
Page 177 Components a Screw (drain hose) b Drain hose c Swing raster motor cover 4 Remove the swing raster motor cover. 5 Disconnect the wiring harness from the swing raster motor. 6 Remove the swing flap motor wiring harness. 7 To install swing flap...
Page 178: Floor Standing Indoor Units
Components 3.17.3 Floor standing indoor units Checking procedures To perform an electrical check of the swing flap motor Prerequisite: Stop the unit operation via the user interface. Prerequisite: Turn OFF the respective circuit breaker. Prerequisite: Remove the required plate work, see "3.14 Plate work" [ 151].
Page 179 Components Pins Measured resistance (Ω) 706.8~813.2 Swing flap motor resistance Action measurements are correct? Replace the swing flap motor wiring harness, see "Repair procedures" [ 179]. Replace the swing flap motor, see "Repair procedures" [ 179]. Repair procedures To remove the swing flap motor Prerequisite: Stop the unit operation via the user interface.
Page 180 Components To install the swing flap motor 1 Install the coupling piece on the swing flap motor. Install the spring to fix the coupling piece. 2 Connect the wiring harness to the swing flap motor. 3 Install the swing flap motor in the correct location on the indoor unit. a Swing flap b Screw (swing flap motor fixation) c Swing flap motor...
Page 181: Swing Raster Motor
Components Is the problem solved? Action Return to the troubleshooting of the specific error and continue with the next procedure. 3.18 Swing raster motor 3.18.1 Checking procedures To perform an electrical check of the swing raster motor Prerequisite: Stop the unit operation via the user interface. Prerequisite: Turn OFF the respective circuit breaker.
Page 182: Repair Procedures
Components Pins Measured resistance (Ω) 353.4~406.6 706.8~813.2 Swing raster motor resistance Action measurements are correct? Replace the swing raster motor wiring harness, see "Repair procedures" [ 182]. Replace the swing raster motor, see "Repair procedures" [ 182]. 3.18.2 Repair procedures To remove the swing raster motor Class 20~42 indoor unit Prerequisite: Stop the unit operation via the user interface.
Page 183 Components a Screw (drain hose) b Drain hose 4 Remove the 2 screws that fix the swing raster motor assembly to the indoor unit. a Screw (swing raster motor assembly) b Swing raster motor assembly c Fan guard d Swing raster motor rod 5 Remove the fan guard.
Page 184 Components Class 50~71 indoor unit Prerequisite: Stop the unit operation via the user interface. Prerequisite: Turn OFF the respective circuit breaker. Prerequisite: Remove the required plate work, see "3.14 Plate work" [ 151]. 1 Remove the switch box, see "3.14 Plate work" [ 151]. 2 Put a small drain pan (or container) under the drain hose.
Page 185 Components a Screw (swing raster motor fixation) b Swing raster motor c Gear 9 Remove the swing raster motor from the gear. 10 Disconnect the wiring harness from the swing raster motor. 11 To install the swing raster motor, see "Repair procedures" [ 182].
Page 186 Components 7 Install the 2 screws to fix the swing raster motor assembly. Do NOT yet tighten the screws. a Screw (swing raster motor assembly) b Swing raster motor assembly c Fan guard d Swing raster motor rod 8 Connect the swing raster motor rod to the swing raster shaft using soft tools. 9 Tighten the 2 screws to properly fix the swing raster motor assembly.
Page 187 Components Class 50~71 indoor unit 1 Connect the wiring harness to the swing raster motor. 2 Install the gear on the swing raster motor shaft. 3 Install the swing raster motor (and gear) on the correct location on the bracket. a Screw (swing raster motor fixation) b Swing raster motor c Gear...
Page 188 Components 10 Install the fan guard. 11 Install the swing raster motor cover. 12 Connect the drain hose to the indoor unit. a Screw (drain hose) b Drain hose 13 Install the drain hose fixation bracket. Install and tighten the screw. 14 Install the switch box, see "3.14 Plate work" [...
Page 189: Thermistors
Components 3.19 Thermistors 3.19.1 Checking procedures INFORMATION It is recommended to perform the checks in the listed order. To perform a mechanical check of the specific thermistor Prerequisite: Stop the unit operation via the user interface. Prerequisite: Turn OFF the respective circuit breaker. Prerequisite: Remove the required plate work, see "3.14 Plate work" [...
Page 190 Components Name Symbol Location Connector Inter- Referen (PCB) (pins) mediate connector (table) (pins) Discharge Main (O/U) S90:5‑6 pipe thermistor Wall mounted indoor units Name Symbol Location Connector Inter- Referen (PCB) (pins) mediate connector (table) (pins) Indoor unit Display PCB S800:5‑11 S27:1‑2 on air (room) A3P on...
Page 191 Components T °C kΩ T °C kΩ T °C kΩ T °C kΩ –19 186.53 38.08 10.21 3.32 –18 175.97 36.30 9.81 3.21 –17 166.07 34.62 9.42 3.11 –16 156.80 33.02 9.06 3.01 –15 148.10 31.50 8.71 2.91 –14 139.94 30.06 8.37 2.82...
Page 192 Components 6 Measure the resistance between the appropriate pins of the thermistor connector. 7 Check that the measured resistance value matches the resistance determined through the measured temperature (earlier step in the procedure). ▪ E.g. R1T thermistor: ▪ Measured temperature with contact thermometer: 23.1°C, ▪...
Page 193: Repair Procedures
Components 8 Disconnect the thermistor from the intermediate connector and measure the resistance of the thermistor (between the appropriate pins of the connector). Does the measured resistance of the Action thermistor match with the temperature determined resistance? Correct the wiring between the thermistor connector on the PCB and the intermediate connector, see "6.2 Wiring...
Page 194 Components Other refrigerant side thermistors Prerequisite: Stop the unit operation via the user interface. Prerequisite: Turn OFF the respective circuit breaker. Prerequisite: Remove the required plate work, see "3.14 Plate work" [ 151]. 6 Locate the thermistor that needs to be removed. 7 Remove the thermistor from the thermistor holder as follows: ▪...
Page 195 Components 9 Disconnect the thermistor connector from the appropriate PCB and remove the thermistor. INFORMATION Some of the thermistors are wired to the same connector. See connector and pin information of the thermistors at the start of the electrical check procedure and "6.2 Wiring diagram" [ 223].
Page 196 Components ▪ For outdoor unit air (ambient) thermistor: Correctly install the thermistor in the holder and close the thermistor holder. ▪ For refrigerant piping thermistors: Pull the clip and install the thermistor in the specific thermistor holder. Make sure the clip is in the correct position (blocking the thermistor). a Clip b Thermistor c Thermistor holder...
Page 197: Wifi Control Pcb
Components ▪ Install all other thermistors wired to the connector in their thermistor holder, ▪ Route the thermistor harness of all thermistors towards the appropriate PCB, ▪ Connect the thermistor connector to the appropriate PCB. WARNING When reconnecting a connector to the PCB, make sure to connect it on the correct location and do NOT apply force, as this may damage the connector or connector pins of the PCB.
Page 198 Components A Wall mounted indoor unit a Wifi control PCB assembly A Floor standing indoor unit a Wifi control PCB assembly Is the measured power supply voltage Action correct? Skip the next step.. Continue with the next step. 4 Measure the output voltage between between the pins 4‑5 on the connector S801 on the indoor unit main PCB.
Page 199: Repair Procedures
Components After complete check of the indoor unit Action main PCB, is the problem solved? No further actions required. Replace the wifi control PCB, see "Repair procedures" [ 199]. 3.20.2 Repair procedures To remove the wifi control PCB Prerequisite: Stop the unit operation via the user interface. Prerequisite: Turn OFF the respective circuit breaker.
Page 200 Components To install the wifi control PCB 1 Click the wifi control PCB assembly on the indoor unit. A Wall mounted indoor unit a Wifi control PCB assembly A Floor standing indoor unit a Wifi control PCB assembly 2 Connect the harness to the wifi control PCB assembly. Is the problem solved? Action No further actions required.
Page 201 Components 4 Route the wiring harness out of the harness retainers and remove the wifi control PCB wiring harness. 5 To install the wifi control PCB wiring harness, see "Repair procedures" [ 199]. To install the wifi control PCB wiring harness 1 Connect the wiring harness connector to the indoor unit main PCB.
Page 202: Third Party Components
Third party components 4 Third party components 4.1 Electrical circuit 4.1.1 Checking procedures To check the power supply of the unit Prerequisite: Stop the unit operation via the user interface. Prerequisite: Turn OFF the respective circuit breaker. Prerequisite: Remove the required plate work, see "3.14 Plate work" [ 151].
Page 203: Repair Procedures
Third party components Does the unit receive power? Action Correct the wiring from the main power supply terminal to the indoor unit power supply terminal, see "Repair procedures" [ 203]. Adjust the power supply to the unit, see "Repair procedures" [ 203]. To check if the power supply is conform with the regulations 1 Check that the power source is in line with the requirements described in the databook.
Page 204: Refrigerant Circuit
Third party components To correct the wiring from the main power supply terminal to the indoor unit power supply terminal Prerequisite: Stop the unit operation via the user interface. Prerequisite: Turn OFF the respective circuit breaker. Prerequisite: Remove the required plate work, see "3.14 Plate work" [ 151].
Page 205 Third party components a Liquid stop valve b Gas stop valve 2 Check if the stop valves are completely open. The refrigerant circuit stop valves are Action open? Return to the troubleshooting of the specific error and continue with the next procedure.
Page 206 Third party components INFORMATION A bigger temperature drop before and after the expansion valve can be normal, however excessive ice is indicating a malfunction of the expansion valve or internal obstruction of the valve (dirt or ice build up in case of humidity in the system). Temperature drop found? Action Replace the clogged part, see...
Page 207 Third party components Heating The electronic expansion valve is closed due to the overload control. Frequency comes to the minimum level. (High pressure is High maintained at a pressure constant level.) High pressure drops or rises immediately after the pressure overload control is complete.
Page 208 Third party components Heating The opening degree of the electronic expansion valve becomes larger. The electronic expansion valve fully opens and frequency increases. Discharge pipe or low pressure drooping control. High Frequency comes to pressure the minimum level. (High pressure is maintained at a constant level.) pressure...
Page 209: Repair Procedures
Third party components Is the pressure in the refrigerant circuit Action correct? Return to the troubleshooting of the specific error and continue with the next procedure. Replace the leaking part of the refrigerant circuit, see "Repair procedures" [ 209]. To check if the refrigerant field piping is conform with the regulations 1 Check if the refrigerant field piping is conform with the regulations.
Page 210 Third party components To replace the clogged/leaking part of the refrigerant circuit 1 See the correct procedure for the component that needs to be repaired. See also "Repair information" [ 211] for more details. Is the problem solved? Action No further actions required. Return to the troubleshooting of the specific error and continue with the next procedure.
Page 211 Third party components To add refrigerant 1 See the installer reference guide for the correct procedure. Is the problem solved? Action No further actions required. Perform a pressure test of the refrigerant circuit, see "Checking procedures" [ 204]. Repair information Refrigerant piping handling ▪...
Page 212: External Factors
Third party components 3 Perform pump down operation, see installer reference guide for the correct procedure. 4 After 5~10 minutes (after only 1~2 minutes in case temperature <–10°C), close the liquid stop valve using a hexagonal wrench. 5 Check the manifold if vacuum is reached. Close the gas stop valve and stop forced cooling operation.
Page 213 Third party components To check for objects that may block the airflow 1 Check for the presence of object(s) near the indoor unit that may block the airflow. Remove the object(s) as needed. Is the problem solved? Action No further actions required. Return to the troubleshooting of the specific error and continue with the next procedure.
Page 214: Maintenance
Maintenance 5 Maintenance 5.1 To clean the outdoor unit heat exchanger 1 Straighten the hair fins. 2 Clear the outdoor unit heat exchanger from dust, leaves,… using a fin-comb or compressed air/N CAUTION Avoid bending or damaging the hair fins of the outdoor unit heat exchanger during the cleaning process.
Page 215: To Clean The Indoor Unit And User Interface
Maintenance CAUTION Rinse out the cleaning agent until there is NO cleaning agent left. Otherwise, the corrosion of heat exchanger and drain pan may occur. Pay attention to the cleaning agent that may also corrode other materials of the indoor unit (Aluminium, copper, plastic, ABS, …).
Page 216: To Clean The Air Filters
Maintenance NOTICE ▪ Do NOT use gasoline, benzene, thinner polishing powder or liquid insecticide. Possible consequence: Discoloration and deformation. ▪ Do NOT use water or air of 50°C or higher. Possible consequence: Discoloration and deformation. ▪ Do NOT scrub firmly when washing the blade with water. Possible consequence: The surface sealing peels off.
Page 217 Maintenance 1 Remove the front panel, see "3.14 Plate work" [ 151]. 2 Carefully remove the air filter tabs from the claws (a) on the sides. Hold the air filter by the filter knob (b) and unhook the air filter tab from the claw (c) on the top.
Page 218 Maintenance 6 Insert the filter tabs to the claws on the bottom (d). Hold the air filter by the filter knob (b) and insert the air filter tab to the claw (c) on the top. Insert the air filter tabs to the claws (a) on the sides. Make sure the air filter is securely fixed in all positions.
Page 219: To Clean The Titanium Apatite Deodorising Filter And The Silver Allergen Removal Air Purifying Filter
Maintenance a Claw 4 Wash the air filters with water or clean them with a vacuum cleaner. 5 Soak in lukewarm water for about 10 to 15 minutes. INFORMATION ▪ If the dust does NOT come off easily, wash them with a neutral detergent diluted in lukewarm water.
Page 220: To Replace The Titanium Apatite Deodorising Filter And The Silver Allergen Removal Air Purifying Filter
Maintenance ▪ for class 50~71: titanium apatite deodorising filter and the silver allergen removal air purifying filter from all 4 claws. a Claw 2 Remove the dust from the filter with a vacuum cleaner. 3 Soak the filter for 10 to 15 minutes in warm water. Note: (class 50~71) Do NOT remove the filter from the frame.
Page 221 Maintenance INFORMATION ▪ Do NOT throw away the filter frame, but use it again. ▪ Dispose of the old filter as non-flammable waste. To order titanium apatite deodorising filter and the silver allergen removal air purifying filter, contact your dealer. Item Part number Titanium deodorising filter - 1 set...
Page 222: Technical Data
Technical data 6 Technical data 6.1 Detailed information setting mode 6.1.1 Detailed information setting mode: Indoor unit See the installer reference guide on business portal for more information. 6.1.2 Detailed information setting mode: Outdoor unit See the installer reference guide on business portal for more information. 6.1.3 Detailed information setting mode: Remote controller See the installer reference guide on business portal for more information.
Page 223: Wiring Diagram
Technical data 6.2 Wiring diagram 6.2.1 Wiring diagram: Indoor unit Unified wiring diagram legend For applied parts and numbering, refer to the wiring diagram on the unit. Part numbering is by Arabic numbers in ascending order for each part and is represented in the overview below by "*"...
Page 224 Technical data Symbol Meaning Heater FU*, F*U, (for characteristics, refer to Fuse PCB inside your unit) Connector (frame ground) Harness H*P, LED*, V*L Pilot lamp, light emitting diode Light emitting diode (service monitor green) HIGH VOLTAGE High voltage Intelligent eye sensor IPM* Intelligent power module K*R, KCR, KFR, KHuR, K*M...
Page 225 Technical data Symbol Meaning Float switch S*NG Refrigerant leak detector S*NPH Pressure sensor (high) S*NPL Pressure sensor (low) S*PH, HPS* Pressure switch (high) S*PL Pressure switch (low) Thermostat S*RH Humidity sensor S*W, SW* Operation switch SA*, F1S Surge arrester SR*, WLU Signal receiver Selector switch SHEET METAL...
Page 226 Technical data FTXM20~42R + ATXM25+35R INFORMATION The diagrams shown in this manual may be incorrect due to changes/updates to the unit. Correct diagrams are supplied with the unit and can also be found in the technical data book. STREAMER UNIT STREAMER PART INDOOR UNIT S102...
Page 227 Technical data FTXM50~71R + ATXM50R INFORMATION The diagrams shown in this manual may be incorrect due to changes/updates to the unit. Correct diagrams are supplied with the unit and can also be found in the technical data book. STREAMER UNIT STREAMER PART INDOOR UNIT S102...
Page 228 Technical data FVXM-A INFORMATION The diagrams shown in this manual may be incorrect due to changes/updates to the unit. Correct diagrams are supplied with the unit and can also be found in the technical data book. S101 Wireless remote controller C101 C102 S103...
Page 229: Wiring Diagram: Outdoor Unit
Technical data 6.2.2 Wiring diagram: Outdoor unit Unified wiring diagram legend For applied parts and numbering, refer to the wiring diagram on the unit. Part numbering is by Arabic numbers in ascending order for each part and is represented in the overview below by "*" in the part code. Symbol Meaning Symbol...
Page 230 Technical data Symbol Meaning FU*, F*U, (for characteristics, refer to Fuse PCB inside your unit) Connector (frame ground) Harness H*P, LED*, V*L Pilot lamp, light emitting diode Light emitting diode (service monitor green) HIGH VOLTAGE High voltage Intelligent eye sensor IPM* Intelligent power module K*R, KCR, KFR, KHuR, K*M...
Page 231 Technical data Symbol Meaning S*NG Refrigerant leak detector S*NPH Pressure sensor (high) S*NPL Pressure sensor (low) S*PH, HPS* Pressure switch (high) S*PL Pressure switch (low) Thermostat S*RH Humidity sensor S*W, SW* Operation switch SA*, F1S Surge arrester SR*, WLU Signal receiver Selector switch SHEET METAL Terminal strip fixed plate...
Page 232 Technical data RXM20~35R + ARXM25~35R INFORMATION The diagrams shown in this manual may be incorrect due to changes/updates to the unit. Correct diagrams are supplied with the unit and can also be found in the technical data book. Wiring diagram For the power requirements, refer to the nameplate.
Page 233 Technical data RXM50+60R + ARXM50~71R INFORMATION The diagrams shown in this manual may be incorrect due to changes/updates to the unit. Correct diagrams are supplied with the unit and can also be found in the technical data book. Wiring diagram Field wiring For the power requirements, refer to the nameplate.
Page 234: Piping Diagram
Technical data 6.3 Piping diagram 6.3.1 Piping diagram: Indoor unit FTXM20R INFORMATION The diagrams shown in this manual may be incorrect due to changes/updates to the unit. Correct diagrams are supplied with the unit and can also be found in the technical data book.
Page 235 Technical data FTXM25~42R + ATXM25+35R INFORMATION The diagrams shown in this manual may be incorrect due to changes/updates to the unit. Correct diagrams are supplied with the unit and can also be found in the technical data book. ·6.4· CuT ·6.4·...
Page 236 Technical data FTXM50+60R + ATXM50R INFORMATION The diagrams shown in this manual may be incorrect due to changes/updates to the unit. Correct diagrams are supplied with the unit and can also be found in the technical data book. 6.4 CuT 6.4 CuT 12.7 CuT 12.7 CuT...
Page 237 Technical data FTXM71R INFORMATION The diagrams shown in this manual may be incorrect due to changes/updates to the unit. Correct diagrams are supplied with the unit and can also be found in the technical data book. 6.4 CuT 6.4 CuT 12.7 CuT 15.9 CuT a Field piping (liquid: Ø6.4 mm flare connection)
Page 238: Piping Diagram: Outdoor Unit
Technical data 6.3.2 Piping diagram: Outdoor unit RXM20~35R + ARXM25~35R INFORMATION The diagrams shown in this manual may be incorrect due to changes/updates to the unit. Correct diagrams are supplied with the unit and can also be found in the technical data book.
Page 239 Technical data RXM42R INFORMATION The diagrams shown in this manual may be incorrect due to changes/updates to the unit. Correct diagrams are supplied with the unit and can also be found in the technical data book. ·7.0· CuT ·7.0· CuT ·4.0·...
Page 240 Technical data RXM50+60R + ARXM50+60R INFORMATION The diagrams shown in this manual may be incorrect due to changes/updates to the unit. Correct diagrams are supplied with the unit and can also be found in the technical data book. ·7.0· CuT ·7.0·...
Page 241 Technical data RXM71R + ARXM71R INFORMATION The diagrams shown in this manual may be incorrect due to changes/updates to the unit. Correct diagrams are supplied with the unit and can also be found in the technical data book. ·7.0· CuT ·7.0·...
Page 242: Component Overview
Technical data 6.4 Component overview 6.4.1 Component overview: Outdoor unit RXM20~35R + ARXM25~35R a Air thermistor R1T i Main PCB A1P b Heat exchanger j Power supply terminal X1M c Heat exchanger thermistor R2T k Expansion valve Y1E d Muffler with filter l Muffler e Stop valve with service port (gas) m Accumulator...
Page 243 Technical data RXM42~71R + ARXM50~71R a Air thermistor R1T j Main PCB A1P b Heat exchanger k Power supply terminal X1M c Heat exchanger thermistor R2T l Muffler d Liquid receiver m Expansion valve Y1E e Stop valve with service port (gas) n Muffler with filter f Stop valve (liquid) o Accumulator...
Page 244: Component Overview: Wall Mounted Indoor Unit
Technical data 6.4.2 Component overview: Wall mounted indoor unit FTXM20~42R + ATXM25+35R a Heat exchanger h Display PCB A3P b Streamer unit i Swing flap c Indoor unit main PCB A1P j Fan d Switch box k Heat exchanger thermistor R2T e Indoor unit power PCB A2P l Indoor unit fan motor M1F f Wifi control PCB A6P...
Page 245 Technical data FTXM50~71R + ATXM50R a Heat exchanger h Swing flap b Indoor unit main PCB A1P i Fan c Switch box j Heat exchanger thermistor R2T d Indoor unit power PCB A2P k Indoor unit fan motor M1F e Wifi control PCB A6P l Swing raster motor M1S f Intelligent eye sensor (PCB A5P) m Swing flap motor M2S...
Page 246: Component Overview: Floor Standing Indoor Unit
Technical data 6.4.3 Component overview: Floor standing indoor unit FVXM-A a Heat exchanger i Switch box b Streamer unit j Service PCB A4P c Swing flap k Indoor unit power PCB A2P d Upper air outlet assembly l Humidity sensor (PCB A5P) e Swing flap motor M1S m Heat exchanger thermistor R1T f Display PCB A3P...
Page 247: Field Information Report
Technical data 6.5 Field information report See next page. RXM20~71R + ARXM25~71R + FTXM20~71R + ATXM25~50R + Service manual FVXM25~50A Split New Perfera R32 ESIE20-11 – 2021.01...
Page 248 In case a problem occurred on the unit which could not be resolved by using the content of this service manual or in case you have a problem which could be resolved but of which the manufacturer should be notified, we advise you to contact your distributor.
Page 249 Application information Application (house, apartment, office,…): New project or reimbursement: Heat emitters (radiators / under floor heating / fan coils /…): Hydraulic layout (simple schematic): Unit / Installation information Model name: Serial number: Installation / commissioning date: Software version hydro PCB A1P Software version hydro PCB A5P Software version user interface: Software version outdoor PCB:...
Page 250: Service Tools
Technical data 6.6 Service tools 1 For an overview of the available service tools, check the Business Portal: http://www.mydaikin.eu. 2 Go to the tab After-sales support on the left navigation pane and select Technical support. 3 Click the button Service tools. An overview of the available service tools for the different products is shown.
Page 251: Field Settings
Technical data 6.7 Field settings 6.7.1 To control heating only mode Prerequisite: Stop operation of the unit. 1 Press , and simultaneously. 2 Press 3 Select SU. 4 Press to confirm. 5 Press 6 Select 19. 7 Press to confirm. 8 Press 9 Select 1 (0: factory setting, 1: heating only).
Page 252: To Control The Indoor Unit Fan During Thermostat Off In Cooling
Technical data 6.7.3 To control the indoor unit fan during thermostat off in cooling Wall mounted units 1 Press , and simultaneously. 2 Press 3 Select SU. 4 Press to confirm. 5 Press 6 Select 4. 7 Press to confirm. 8 Press 9 Select 0 (0: fan ON, 1: fan OFF).
Page 253: To Change Auto Restart On To Off
Technical data 6.7.4 To change auto restart ON to OFF INFORMATION After power failure, the unit will automatically restart (default setting). It is possible to switch OFF auto restart. For example: after a long power failure, generators have to start‑up. As there is limited energy and the air conditioners do NOT have priority, it is recommended to switch OFF auto restart.
Page 256 ESIE20-11 2021.01 Verantwortung für Energie und Umwelt...

Daikin Perfera RXM R Series Service Manual

1 General Operation

2 Troubleshooting

3 Components

4 Third Party Components

5 Maintenance

6 Technical Data

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Troubleshooting

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