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Daikin EHYHBH05AAV3 Service Manual

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Service Manual
Hybrid
- Gas boiler
- EHYKOMB33AA / EHYKOMB33AA
- Hydro-box
- EHYHBH05AAV3 / RHYHBH05AAV3 / CHYHBH05AAV3
- EHYHBH08AAV3 / RHYHBH08AAV3 / CHYHBH08AAV3
- EHYHBX08AAV3 / RHYHBX08AAV3
- Outdoor unit
- EVLQ05CAV3 / RVLQ05CAV3
- EVLQ08CAV3 / RVLQ08CAV3
ESIE13-02A
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Summary of Contents for Daikin EHYHBH05AAV3

  • Page 1 ESIE13-02A Service Manual Hybrid - Gas boiler - EHYKOMB33AA / EHYKOMB33AA - Hydro-box - EHYHBH05AAV3 / RHYHBH05AAV3 / CHYHBH05AAV3 - EHYHBH08AAV3 / RHYHBH08AAV3 / CHYHBH08AAV3 - EHYHBX08AAV3 / RHYHBX08AAV3 - Outdoor unit - EVLQ05CAV3 / RVLQ05CAV3 - EVLQ08CAV3 / RVLQ08CAV3...
  • Page 2 ESIE13-02A Introduction Version Log....................About This Manual..................About the Documentation ................For the User....................For the Installer .................... Part 1 System Outline Description System Build-up................... Components and Connections ..............Functionality System Operation ..................Wiring Diagrams PCB Description ..................Overview Switch Box ................... Cable Dimensions..................
  • Page 3 ESIE13-02A Outdoor Unit Nominal Capacity and Nominal Input............Technical Specifications ................Part 3 Commissioning Part 4 Troubleshooting Troubleshooting General Troubleshooting Flowchart ............. Overview of General Problems ..............Fault-diagnosis by Remote Controller............Fault-diagnosis Manual Reset in the Memory..........Troubleshooting by LED on the Hydro-box PCB ......... Overview of Error Codes................

  • Page 4: Table Of Contents

    ESIE13-02A Error Codes: Outdoor Units “E1” Outdoor Unit PCB Abnormality.............. 103 “E3” Abnormal High Pressure (Detected by the HPS)........104 “E4” Actuation of Low Pressure Sensor ............106 “E5” Compressor Motor Lock ............... 109 “E7” Malfunction of Outdoor Unit Fan Motor..........111 “E9”...
  • Page 5 ESIE13-02A Part 5 Repair Tips and Tricks Part 6 Maintenance Maintenance Schedule Maintenance ....................168 Table of Contents...
  • Page 6 Purpose of this This service manual contains all the information you need to carry out the necessary repair and manual maintenance tasks for the Daikin Altherma Hybrid. Six parts This service manual consists of an introduction and six parts: Part See page Part 1–System Outline...
  • Page 7 ESIE13-02A Introduction Heat pump Outdoor Manual Contents boiler sec- unit section tion ECPEN13-732_Daikin Altherma engineering guide hybrid heat pump engineering guide_tcm135-298162 AD130276-1_EHYKOMB33AA_tcm1 CE declaration 35-290423 4P349694-1_tcm135-290654 addendum book for optional equipment 4PEN349693-1_2013_05_tcm135-29 general safety pre- 0662 cautions 4PEN349695-1_tcm135-290651 installation in a nut- shell 4PEN349587-1A_2013_05_tcm135-2 installation manual...
  • Page 8 Introduction ESIE13-02A About the Documentation The original documentation is written in English. All other languages are translations. The precautions described in this document cover very important topics, follow them carefully. All activities described in the installation manual must be performed by an authorized installer. 1.3.1 Meaning of warnings and symbols DANGER...
  • Page 9 ESIE13-02A Introduction For the User If you are not sure how to operate the unit, contact your installer. The appliance is not intended for use by persons, including children, with reduced physical, sensory or mental capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction concerning use of the appliance by a person responsible for their safety.
  • Page 10 Improper installation or attachment of equipment or accessories could result in elec- tric shock, short-circuit, leaks, fire or other damage to the equipment. Only use acces- sories, optional equipment and spare parts made or approved by Daikin. WARNING Make sure installation, testing and applied materials comply with applicable legisla- tion (on top of the instructions described in the Daikin documentation).
  • Page 11 ESIE13-02A Introduction 1.5.2 Installation site Provide sufficient space around the unit for servicing and air circulation. Make sure the installation site withstands the unit’s weight and vibration. Make sure the area is well ventilated. Make sure the unit is level. Make sure that the floor, where the unit will be installed, is level.
  • Page 12 Introduction ESIE13-02A 1.5.4 Brine If applicable. See the installation manual or installer reference guide of your application for more information. WARNING The selection of the brine MUST be in accordance with the applicable legislation. WARNING Take sufficient precautions in case of brine leakage. If brine leaks, ventilate the area immediately and contact your local dealer.
  • Page 13 ESIE13-02A Introduction 1.5.6 Electrical DANGER: RISK OF ELECTROCUTION Turn OFF all power supply before removing the switch box cover, connecting electrical wiring or touching electrical parts. Disconnect the power supply for more than 1 minute, and measure the voltage at the terminals of main circuit capacitors or electrical components before servicing.
  • Page 14 Introduction ESIE13-02A 1.5.7 The gas boiler is factory set to: The type of gas quoted on the type identification plate or on the setting type identification plate. The quitted gas pressure. Operate the unit ONLY with the gas type and gas pressure indicated on these type identification plates. Installation and adaptation of the gas system MUST be conducted by: Personnel qualified for this work.
  • Page 15 ESIE13-02A Introduction 1.5.9 Local legislation Local regulations It is law that all gas appliances are installed by a gas safe registered competent engineer and in for UK accordance with the following recommendations: Current Gas Safety (Installation and Use) Regulations. All current building regulations. Building Standards (Scotland) Consolidated.
  • Page 16 Introduction ESIE13-02A...
  • Page 17 ESIE13-02A Part 1 System Outline What is in this part? This part contains the following chapters: Chapter See page 1–Description 2–Functionality 3–Wiring Diagrams Part 1 – System Outline...
  • Page 18 Description ESIE13-02A Description System Build-up The system combines a gas condensing boiler and a heat pump (hydro-box) for space heating and domestic hot water. Depending on the position of the 3-way valve, the gas condensing boiler can either be bypassed or not. The heat pump can either operate or not, depending on the active operation mode (heat pump only, gas condensing boiler only or hybrid (= heat pump and gas condensing boiler)).
  • Page 19 ESIE13-02A Description Components and Connections 1.2.1 Gas condensing boiler Item Description Item Description Gas valve Air supply cap Boiler control panel Flue pipe adapter (use ONLY in combination with the accompanying elbow in flue sets) Sensor S1 Connection block/terminal strip X4 Sensor S2 Condensate drain pan Hot water sensor S3...
  • Page 20 Description ESIE13-02A 1.2.2 Hydro-box Item Description Gas in Cold water in Refrigerant gas connection Refrigerant liquid connection Heating return Heating flow Hot water out Part 1 – System Outline...
  • Page 21 ESIE13-02A Description 1.2.3 Outdoor unit Item Description Terminal strip with earth terminal Gas stop valve (ø15.9 CuT) Service port Liquid stop valve (ø6.4 CuT) Part 1 – System Outline...
  • Page 22 Functionality ESIE13-02A Functionality System Operation 2.1.1 Heating Mode Heat pump only The heat pump and pump are enabled, the gas boiler is bypassed. operation Space heating is enabled. Allowable outdoor temperature range: -25 to 25°C. PUMP RADIATOR Outdoor unit Indoor unit Plate heat exchanger Gas boiler 3-way valve...
  • Page 23 ESIE13-02A Functionality Quick heatup HEATPUMP MODE heatpump operation boiler operation at highest setpoint SP+2 SP+1 set in weather dependent SP-1 SP-2 Time Part 1 – System Outline...
  • Page 24 Functionality ESIE13-02A Hybrid operation The heat pump, pump and gas boiler are enabled. mode Space heating is enabled. Allowable outdoor temperature range: -25 to 25°C. PUMP RADIATOR Outdoor unit Indoor unit Plate heat exchanger Gas boiler 3-way valve Part 1 – System Outline...
  • Page 25 ESIE13-02A Functionality HYBRID MODE heatpump operation boiler operation (*) SP+2 SP+1 room temperature SP-1 SP-2 Time Part 1 – System Outline...
  • Page 26 Functionality ESIE13-02A Gas boiler only The pump and gas boiler are enabled. mode Space heating is enabled. It works alternating depending on the demand of domestic hot water. If there is a domestic hot water demand, the unit stops serving the heating and turns in domestic hot water mode.
  • Page 27 ESIE13-02A Functionality 2.1.2 Domestic Hot Water Domestic hot water The heat pump and the pump are idle, the gas boiler is enabled. only mode Space heating is disabled. It works alternating depending on the demand of domestic hot water. PUMP RADIATOR Outdoor unit Indoor unit...
  • Page 28 Functionality ESIE13-02A Domestic hot water Depending on the mode (heat pump only / hybrid / gas boiler only) we can generate domestic hot water and space heating and heating as follows: mode During heat pump only operation, the heat pump remains operational and the gas boiler is bypassed / domestic hot water will be generated by boiler only on demand.
  • Page 29 ESIE13-02A Functionality Part 1 – System Outline...
  • Page 30 Functionality ESIE13-02A Part 1 – System Outline...
  • Page 31 ESIE13-02A Functionality Economic When the heat pump operates at the break-even COP, the cost of 1kWh thermal output produced by the heat pump is equal to the cost of 1kWh thermal output produced by the boiler. The break-even COP is dependent on the electricity price [€/kWh], the gas price [€/kWh] and the boiler’s thermal efficiency [%] (considered as a fixed value, independent of flow temperature, return temperature and ambient temperature).
  • Page 32 Wiring Diagrams ESIE13-02A Wiring Diagrams PCB Description 3.1.1 Gas condensing boiler Part number Description Earth connections heat exchanger Spark plug cover Boiler controller Earth connections boiler controller Fuse (3.15 A T) Gas valve and ignition unit Ionisation/ignition probe Main voltage Flow sensor Return sensor Domestic hot water sensor...
  • Page 33 ESIE13-02A Wiring Diagrams 3.1.2 External connection diagram For more details check unit wiring diagram. Part 1 – System Outline...
  • Page 34 Wiring Diagrams ESIE13-02A Overview Switch Box Part number Description Digital I/O PCB, receiver PCB (wireless ON/OFF thermostat, PC= power circuit) (optional) Demand PCB (optional) TR1, TR2 Power supply transformer Main PCB (hydro) Connector Terminal strip The next two figures ("PCB: part 1" and "PCB: part 2") show the wiring diagram of the hybrid PCB. The different components are mentioned either on "PCB: part 1"...
  • Page 35 ESIE13-02A Wiring Diagrams Part 1 – System Outline...
  • Page 36 Wiring Diagrams ESIE13-02A Part 1 – System Outline...
  • Page 37 ESIE13-02A Wiring Diagrams For the description of each part number, refer to the table below (note that the options that go together with the hybrid are the same options as those for Altherma LT): Part number Description Main PCB (hydro) User interface PCB ON/OFF thermostat Heat pump convector...
  • Page 38 Wiring Diagrams ESIE13-02A Cable Dimensions Part 1 – System Outline...
  • Page 39 ESIE13-02A Wiring Diagrams Part 1 – System Outline...
  • Page 40 Wiring Diagrams ESIE13-02A Piping Diagram Item Description Space heating / water in Space heating / water out Shut off valve with drain / fill valve (field installation) Expansion vessel Filter Pump Plate heat exchanger Air purge Flow sensor 3-way valve Safety valve Boiler Domestic hot water out...
  • Page 41 ESIE13-02A Part 2 Specifications What is in this part? This part contains the following chapters: Chapter See page 1–Gas Condensing Boiler 2–Hydro-box 3–Outdoor Unit Part 2 – Specifications...
  • Page 42 Min. - Max. 7,9-31,9 Efficiency DHW Casing Colour RAL9010 Dimensions Unit Height x width x depth 710x450x240 Weight Unit Gas categories Pressure (mBar) Brand Country Gas category DAIKIN II2H3P 30-37 II2Esi3B/P I2E(S)B II2H3P 30-37 ROTEX II2H3B/P II2ELL3P Part 2 – Specifications...
  • Page 43 ESIE13-02A Gas Condensing Boiler Gas type Natural gas H Propane P Gas category G31 (propane) 20 mBar 29 mBar 8.4 - 9.6 9.4 - 10.8 % at low setting (L) ( (with opened casing) 8.6 - 9.6 9.8 - 10.8 % at high setting (L) ( (with opened casing) Gas supply pressure (mBar)
  • Page 44 Hydro-box ESIE13-02A Hydro-box Technical Specifications EHYHBH05 EHYHBH08 EHYHBX08 Casing Colour White Dimensions Unit Height Width Depth Weight Net weight Main compo- Pump Type DC motor nents Nr. of speed Inverter controlled Power input Water side heat Type Brazed plate exchanger Water volume Water flow rate l/min...
  • Page 45 ESIE13-02A Hydro-box Operation range Outdoor tempera- Space cooling °C 10 ~ 43 (heat pump oper- ture Space heating °C -25 ~ 25 ation) (heat pump) Water tempera- Space cooling °C 5 ~ 22 ture Space heating °C 15 ~ 55 Part 2 –...
  • Page 46 Outdoor Unit ESIE13-02A Outdoor Unit Nominal Capacity and Nominal Input For combination indoor units and Outdoor units EHYRLQ005 EHYRLQ008 EHYRLQ008 outdoor units Indoor units Indoor H/P module EHYHBH05 EHYHBH08 EHYHBX08 Condition 1 Heating Minimum 1,80 1,80 1,80 capacity Nominal 4,40 7,40 7,40 Maximum...
  • Page 47 ESIE13-02A Outdoor Unit Technical Specifications Casing Colour Ivory white Material Dimensions Packing Height Width Depth Unit Height Width Depth Weight Machine weight: ERLQ004* / 54 / 56 ERLQ006* & ERLQ008* Gross weight: ERLQ004* / ERLQ006* 57 / 59 &...
  • Page 48 Outdoor Unit ESIE13-02A Operation Heating (heat °CDB pump) range °CDB Cooling °CWB °CWB Sound level Heating (heat Sound power 61 / 61 / 62 (nominal) pump) (4/6/8) Sound pressure 48 / 48 / 49 (4/6/8) Cooling Sound power 63 / 63 / 63 Sound pressure 48 / 49 / 50 (4/6/8)
  • Page 49 ESIE13-02A Outdoor Unit Notes (1) See operation range drawing. (*) Range increase by support backup heater. (**) Range increase by support booster heater or backup heater. (2) The sound pressure level is measured via a microphone at a certain distance from the unit. It is a relative value depending on the distance and acoustic environment.
  • Page 50 Outdoor Unit ESIE13-02A Part 2 – Specifications...
  • Page 51 ESIE13-02A Part 3 Commissioning See ‘Note’ on page 6. Part 3 – Commissioning...
  • Page 52 ESIE13-02A Part 3 – Commissioning...
  • Page 53 ESIE13-02A Part 4 Troubleshooting What is in this part? This part contains the following chapters: Chapter See page 1–Troubleshooting 2–Error Codes: Gas Condensing Boiler 3–Error Codes: Hydro-box 4–Error Codes: Outdoor Units 5–Error Codes: System Malfunctions 6–Additional Checks for Troubleshooting Part 4 – Troubleshooting...
  • Page 54 Troubleshooting ESIE13-02A Troubleshooting General Troubleshooting Flowchart Part 4 – Troubleshooting...
  • Page 55 Under no circumstances safety devices may be bridged or changed to a value other than the factory setting. If the cause of the problem cannot be found, call your local Daikin dealer. If the pressure relief valve is not working correctly and is to be replaced, always reconnect the flexible...

  • Page 56: Equipment Does Not Operate

    Troubleshooting ESIE13-02A 1.2.1 Equipment does not Operate ERHQ011~016* Applicable model ERLQ004~016* Error detection method Error generating condition Supposed causes Fuse blown or disorder of contact in operation circuit Faulty operation switch or contact point Faulty high pressure switch Faulty magnetic switch for fan motor Activation or fault of overcurrent relay for fan motor Faulty overcurrent relay for compressor Faulty compressor protection thermostat...

  • Page 57: Indoor Pump Operates, But Compressor Does Not

    ESIE13-02A Troubleshooting 1.2.2 Indoor Pump Operates, but Compressor does not ERHQ011~016* Applicable model ERLQ004~016* Error detection method Error generating condition Supposed causes Faulty thermistor Faulty indoor/outdoor unit PC board Faulty magnetic switch Faulty power transistor Faulty compressor Continuous pump operation enabled by setting Part 4 –...
  • Page 58 Troubleshooting ESIE13-02A Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Part 4 – Troubleshooting...

  • Page 59: Cooling/Heating Operation Starts But Stops Immediately

    ESIE13-02A Troubleshooting 1.2.3 Cooling/Heating Operation Starts but Stops Immediately ERHQ011~016* Applicable model ERLQ004~016* Error detection method Error generating condition Supposed causes Excess charge of refrigerant Air intrudes into refrigerant system Faulty pressure switch Faulty magnetic switch for outdoor unit fan motor Faulty aux.
  • Page 60 Troubleshooting ESIE13-02A Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Part 4 – Troubleshooting...

  • Page 61: After Unit Shuts Down, It Cannot Be Restarted For A While

    ESIE13-02A Troubleshooting 1.2.4 After Unit Shuts Down, It cannot be Restarted for a While ERHQ011~016* Applicable model ERLQ004~016* Error detection method Error generating condition Supposed causes Overcurrent relay (for compressor) Compressor protection thermostat Overcurrent relay may act due to the following reasons: Lower voltage of power supply Excess level of high pressure Insufficient size of power cable...
  • Page 62 Troubleshooting ESIE13-02A Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Part 4 – Troubleshooting...

  • Page 63: Equipment Produces Loud Noise Or Shakes

    ESIE13-02A Troubleshooting 1.2.5 Equipment Produces Loud Noise or Shakes ERHQ011~016* Applicable model ERLQ004~016* Error detection method Error generating condition Supposed causes Faulty installation Excess charge of refrigerant Air intrudes into refrigerant system Flushing noise due to refrigerant shortage. (Sound of shoo...) Part 4 –...
  • Page 64 Troubleshooting ESIE13-02A Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Part 4 – Troubleshooting...
  • Page 65 ESIE13-02A Troubleshooting 1.2.6 User Interface Displays EHB/V*CA Applicable model Error detection method Error generating condition Supposed causes Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may have occurred. Part 4 – Troubleshooting...
  • Page 66 Troubleshooting ESIE13-02A 1.2.7 The Unit is Turned on ( LED is lit) but the Unit is not Heating or Cooling as Expected EHB*CA, EHV*CA, ERHQ011~016*, ERLQ004~016* Applicable models Error detection method Error generating condition Supposed causes - corrective action Possible causes Corrective action The temperature setting is not correct.

  • Page 67: The Unit Is Turned On But The Compressor Is Not Starting

    ESIE13-02A Troubleshooting 1.2.8 The Unit is Turned on but the Compressor is not Starting (Space Heating or Domestic Heating) EHB*CA, EHV*CA, ERHQ011~016*, ERLQ004~016* Applicable models Error detection method Error generating condition Supposed causes - corrective action Possible causes Corrective action The unit must start up out of its operation range In case of low water temperature, the system uti- (the water temperature is too low).

  • Page 68: Pump Is Making Noise (Cavitation)

    Troubleshooting ESIE13-02A 1.2.9 Pump is Making Noise (Cavitation) EHB*CA, EHV*CA Applicable models Error detection method Error generating condition Supposed causes - corrective action Possible causes Corrective action There is air in the system. Purge air. Water pressure at pump inlet is too low. Check on the manometer on the unit that there is sufficient water pressure.

  • Page 69: The Water Pressure Relief Valve Opens

    ESIE13-02A Troubleshooting 1.2.10 The Water Pressure Relief Valve Opens EHB*CA, EHV*CA Applicable models Error detection method Error generating condition Supposed causes - corrective action Possible causes Corrective action The expansion vessel is broken. Replace the expansion vessel. The water volume in the installation is too high. Make sure that the water volume in the installa- tion is under the maximum allowed value (refer to the “Specifications”...

  • Page 70: The Water Pressure Relief Valve Leaks

    If you do not hear a clacking sound, contact your local Daikin dealer. In case the water keeps running out of the unit, close both the water inlet and outlet shut-off valves first and then contact your local Daikin dealer.

  • Page 71: The User Interface Does Not Display Certain Screens

    ESIE13-02A Troubleshooting 1.2.12 The User Interface Does Not Display Certain Screens (RT, LWT, Tank, Ext RT) EHB*CA, EHV*CA Applicable models Error detection method Error generating condition Supposed causes - corrective action Possible causes Corrective action The tank-screen is not visible. Check if there is a tank connected? Then setting A.2.2.1.

  • Page 72: Domestic Hot Water Capacity Shortage At Low Outdoor Tem

    [5-03] = “[5-01] + 3~5°C” In case the Daikin Altherma LT has no spare capacity compare to the space heating load at low Ta (see equilibrium temperature [5-01]), the priority shall be given towards space heating (see anti-recycling timer [8-02] and maximum running timer for domestic hot water [8-01]) and domestic hot water shall be covered/supported by the electrical heater (To guarantee sufficient domestic hot water and reasonable domestic hot water heat-up times).

  • Page 73: Space Heating Capacity Shortage At Low Outdoor Tempera

    ESIE13-02A Troubleshooting 1.2.14 Space Heating Capacity Shortage at Low Outdoor Temperatures EHB*CA, EHV*CA Applicable models Error detection method Error generating condition Supposed causes - A. General: independent from DHW - setpoint mode corrective action Possible causes Corrective action The settings related to space heating operation Optimize the settings related to space heating at low Ta - equilibrium temperature status operation at low Ta - equilibrium temperature...

  • Page 74: Room Temperature Set Point Isn’T Reached Or Increases Too

    Troubleshooting ESIE13-02A 1.2.15 Room Temperature Set Point Isn’t Reached or Increases Too Slow Applicable models EHB*CA, EHV*CA Error detection method Error generating condition Supposed causes - corrective action Possible causes Corrective action See possible causes of item “2 Possible space See corrective actions of item “2 Possible space heating capacity shortage at low Ta”.
  • Page 75 ESIE13-02A Troubleshooting Fault-diagnosis by Remote Controller Explanation If operation stops due to malfunction (error or warning), the user interface home screen will indicate the t-symbol. The malfunction code plus a short description of the error is displayed when pushing the t-button on the user interface. In case of a warning, the unit will continue operation. In case of an error, the unit will preventively shut down.
  • Page 76 Troubleshooting ESIE13-02A Fault-diagnosis Manual Reset in the Memory Explanation In order to reset the malfunction code in the remote controller memory, follow actions has to be performed. Remark For some malfunction codes it’s required to manually reset the malfunction code in the memory before the unit can be restarted.
  • Page 77 ESIE13-02A Troubleshooting 1.4.1 Remote Controller Display Malfunction Code and Contents Malfunction code Contents/Processing Remarks Inlet water temperature thermistor abnormality Outlet water temperature thermistor abnormality Water heat exchanger freeze-up abnormality Water flow abnormality Outlet water temperature too high Outlet water temperature too high Booster or back-up heater thermal protector is open Booster heater thermal protector is open Warning tank disinfection function not completed correctly...
  • Page 78 Troubleshooting ESIE13-02A Malfunction code Contents/Processing Remarks Lack of gas malfunction Abnormal suction pipe temperature Abnormal power supply voltage Including malfunction of K10R, K11R Underfloor heating screed dry-out error Can only be reset when in installer level U4/UF Failure of transmission (between hydro-box and outdoor Transmission between hydro-box and outdoor unit) unit is not being carried out correctly.
  • Page 79 ESIE13-02A Troubleshooting Troubleshooting by LED on the Hydro-box PCB Overview Troubleshooting can be carried out by HAP LED (green). (Blinks when normal) : LED on / : LED off / : LED blinks Microcomputer Normal Monitor Contents/Processing HAP (LED-A) Failure of hydro-box PC board assembly (Note 5) Malfunction of power supply or failure of PC board assembly or broken transmission wire between indoor and outdoor unit.
  • Page 80 Troubleshooting ESIE13-02A Overview of Error Codes Abbreviations DHW= domestic hot water SPH= space heating BUH= back-up heater BSH= booster heater PHE= plate heat exchanger 1.6.1 Hydro-box Malfunction Overview Remote Contents of Malfunction Details of Controller Malfunction Display (Reference Page) Return water temperature thermistor abnormality Leaving water temperature thermistor abnormality PHE freeze-up protection control Water flow abnormality...
  • Page 81 ESIE13-02A Troubleshooting 1.6.2 Outdoor Unit Malfunction Overview Remote Contents of Malfunction Details of Controller Malfunction Display (Reference Page) Outdoor unit PC board malfunction Abnormality of high pressure (HPS) Abnormality of low pressure (outdoor) Compressor motor lock malfunction Malfunction of outdoor unit fan motor Malfunction of Electronic expansion valve Discharge pipe temperature malfunction Faulty high pressure switch (HPS)
  • Page 82 Troubleshooting ESIE13-02A 1.6.3 System Malfunction Overview Remote Contents of Malfunction Details of Controller Malfunction Display (Reference Page) Gas shortage Abnormal power supply voltage Underfloor heating screed dry-out error Transmission error (between hydro-box and outdoor unit) or UF Malfunction of transmission (between hydro-box and outdoor unit) or gas shortage Transmission error (between hydro-box and user interface) Incorrect hydro-box connected to this system or unit type...
  • Page 83 ESIE13-02A Troubleshooting Overview of the Outdoor Safety Devices High pressure switch Fuse Open Close ERHQ011~016BA 4.0 MPa +0/-0.15 3.0 +/-0.15 6.3A/250V ERLQ-CA 4.17 MPa +0/-0.15 3.2 +/-0.15 6.3A/250V Part 4 – Troubleshooting...
  • Page 84 Troubleshooting ESIE13-02A Overview of the Hydro-box Safety Devices Hydro-box Protector Cut-out condition Reference EVLQXXCAV3 Q1L (Clixon) 85 +0/-6°C 4P312728 F1T (Thermal fuse) 134°C +3/-2°C AD120151 B1L004 Min 5l/min in hp operation. If AD120120 3V BUH: min 12l/min B1L008~016 Min 11l/min in hp operation. AD120120 If 3V BUH: min 12l/min If 9W BUH: min 15l/min...
  • Page 85 ESIE13-02A Error Codes: Gas Condensing Boiler Error Codes: Gas Condensing Boiler General Guidelines Before starting the troubleshooting procedure, carry out a thorough visual inspection of the unit and look for obvious defects such as loose connections or defective wiring. Warning When carrying out an inspection on the switch box of the unit, always make sure that the unit is disconnected from the mains.
  • Page 86 Error Codes: Gas Condensing Boiler ESIE13-02A Solving Problems Based on Symptoms Not available at this moment. Part 4 – Troubleshooting...
  • Page 87 ESIE13-02A Error Codes: Gas Condensing Boiler Solving Problems Based on Error Codes When a problem happens, an error code appears on the user interface. It is important to understand the problem and to take countermeasure before resetting the error code. This should be done by a licensed installer or by your local dealer.
  • Page 88 Error Codes: Gas Condensing Boiler ESIE13-02A Error Cause Possible solution code Poor flame signal. Condensate drain blocked. Check adjustment of gas valve. Flame detection fault. Replace ignition cable and spark plug cap. Replace ignition unit. Replace boiler controller. Incorrect fan speed. Fan catching on casing.
  • Page 89 ESIE13-02A Error Codes: Gas Condensing Boiler Symptoms 2.4.1 Burner does not ignite Part 4 – Troubleshooting...
  • Page 90 Error Codes: Gas Condensing Boiler ESIE13-02A 2.4.2 Burner ignites noisily 2.4.3 Burner resonating Part 4 – Troubleshooting...
  • Page 91 ESIE13-02A Error Codes: Gas Condensing Boiler 2.4.4 No heating (CH) 2.4.5 Symptom: No space heating Possible causes Corrective action Heat pump error. Check the user interface. Communication problem with the heat pump. Make sure the communication cable is properly installed. Incorrect heat pump settings.
  • Page 92 Error Codes: Gas Condensing Boiler ESIE13-02A 2.4.6 Symptom: The power is reduced Possible causes Corrective action At high rpm, the power has fallen by more than Check the appliance and flue system for fouling. Clean the appliance and flue system. 2.4.7 Symptom: Space heating does NOT reach the temperature Possible causes...
  • Page 93 ESIE13-02A Error Codes: Gas Condensing Boiler 2.4.9 Symptom: Hot water does NOT reach the temperature Possible causes Corrective action Domestic hot water flow is too high. Adjust the inlet assembly. Temperature setting for water circuit is too low. Set the hot water circuit on the heat pump user interface, depending on the desired tempera- ture.
  • Page 94 Error Codes: Hydro-box ESIE13-02A Error Codes: Hydro-box “A1” Malfunctioning Hydro-box PCB User interface display Error generation The error is generated when the data from the EEPROM is not received correctly. EEPROM (Electrically Erasable Programmable Read Only Memory): A memory chip that holds its content without power.
  • Page 95 ESIE13-02A Error Codes: Hydro-box “89” Water Heat Exchanger Frozen User interface display Method of The freeze-up protection control (operation halt) is activated during cooling operation according to the malfunction temperature detected by the hydro-box heat exchanger thermistor. detection Malfunction Freeze-up protection: decision conditions When the hydro-box heat exchanger temperature is below 0°C during cooling operation.
  • Page 96 Error Codes: Hydro-box ESIE13-02A “CJ, C4, 81, 80, HC, H1” Thermistor or Related Abnormality (Hydro-box) CJ, C4, 81, 80, HC, H1 User interface display Method of The temperatures detected by the thermistors are used to determine thermistor errors. malfunction detection Malfunction When the thermistor input is more than 4.96 V or less than 0.04 V during compressor operation*.
  • Page 97 ESIE13-02A Error Codes: Hydro-box “7H” Hydro-box: Flow Error User interface display Method of The malfunction is detected by the flow sensor. malfunction detection Malfunction The error is generated in case the water flow is too low or no water flow at all for 15 seconds. decision conditions Supposed causes Closed shut off valve...
  • Page 98 Error Codes: Hydro-box ESIE13-02A Troubleshooting Part 4 – Troubleshooting...
  • Page 99 ESIE13-02A Error Codes: Hydro-box [1]: When the pump starts (push the ON/OFF button), manometer needle moves, pump vibrations can be detect. In case unclear perform item A. [2]: When the pump runs, pump signal is displayed on the interface controller. The pump will run for 15 seconds before error code 7H will be displayed.
  • Page 100 Error Codes: Hydro-box ESIE13-02A “C0” Hydro-box: Flow Sensor Failure Remote controller display Method of The protection device circuit checks the flow input signal during pump stop operation. malfunction detection Malfunction The error is generated in case flow input signal during pump stop operation occurs. decision conditions Supposed causes Malfunction of the flow sensor...
  • Page 101 ESIE13-02A Error Codes: Hydro-box “EC” Hydro-box: Domestic Hot Water Tank Temperature too High (> 89°C) Remote controller display Method of The malfunction is detected by domestic hot water tank thermistor (R5T). malfunction detection Malfunction The error is generated in case the domestic hot water temperature rise above 89°C. decision conditions Supposed causes Malfunction of the domestic hot water tank thermistor [R5T]...
  • Page 102 Error Codes: Hydro-box ESIE13-02A Warning “AH” Tank Disinfection Function Not Completed Correctly Remote controller (warning) display Method of The malfunction is detected by thermistor and timer-check. malfunction detection Malfunction The error is generated when disinfection function is not completed correctly. Either tank temperature decision conditions for disinfection [A.4.4.4.] is not reached or temperature is not kept for required time [A.4.4.5.].

  • Page 103: Error Codes: Outdoor Units

    ESIE13-02A Error Codes: Outdoor Units Error Codes: Outdoor Units “E1” Outdoor Unit PCB Abnormality Remote controller display Method of Microcomputer checks whether E PROM is normal. malfunction detection Malfunction PROM: decision conditions When E PROM malfunctions when turning the power supply on Supposed causes Faulty outdoor unit PCB Troubleshooting...

  • Page 104: X93;E3” Abnormal High Pressure (Detected By The Hps)

    Error Codes: Outdoor Units ESIE13-02A “E3” Abnormal High Pressure (Detected by the HPS) Remote controller display Method of The protection device circuit checks continuity in the high pressure switch. malfunction detection Malfunction When the high pressure switch is actuated decision conditions Actuating pressure: Supposed causes Faulty high pressure switch...
  • Page 105 ESIE13-02A Error Codes: Outdoor Units Troubleshooting Check the installation conditions. Is the stop valve Open the stop valve. open? Are control and protection HPS Connect correctly. connected to outdoor unit PC board? (Note) Turn off the power supply. Wait for 10 minutes after compressor stops operating, then check the following.

  • Page 106: X93;E4” Actuation Of Low Pressure Sensor

    Error Codes: Outdoor Units ESIE13-02A “E4” Actuation of Low Pressure Sensor Remote controller display Method of [In cooling] malfunction Detect malfunctions by the pressure sensor (S1NPH). detection [In heating] Detect malfunctions by the heat exchanger distribution pipe thermistor (R4T). Malfunction [In cooling] decision conditions When the detection pressure is the following value:...
  • Page 107 ESIE13-02A Error Codes: Outdoor Units Troubleshooting See also "Check No.7 - Evaluation of Abnormal Low Pressure" on page 157. "Check No.11 - Outdoor Unit: Check for Power Transistor" on page 160. Part 4 – Troubleshooting...
  • Page 108 Error Codes: Outdoor Units ESIE13-02A Graphs Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Part 4 – Troubleshooting...

  • Page 109: X93;E5” Compressor Motor Lock

    ESIE13-02A Error Codes: Outdoor Units “E5” Compressor Motor Lock Remote controller display Method of Inverter PC board takes the position signal from UVW line connected between the inverter and malfunction compressor, and detects the position signal pattern. detection Malfunction The position signal with 3 times cycle as imposed frequency is detected when compressor motor decision conditions operates normally, but 2 times cycle when compressor motor locks.
  • Page 110 Error Codes: Outdoor Units ESIE13-02A Troubleshooting Check the installation conditions. Is the stop valve Open the stop valve. open? Is the UVW wiring Connect correctly. normal? high pressure Remedy the cause. higher than 2.6 MPa at starting? Check and see whether Replace the compressor.

  • Page 111: X93;E7” Malfunction Of Outdoor Unit Fan Motor

    ESIE13-02A Error Codes: Outdoor Units “E7” Malfunction of Outdoor Unit Fan Motor Remote controller display Method of Abnormality of fan motor system is detected according to the fan speed detected by hall IC when the malfunction fan motor runs. detection Malfunction When the fan runs with speed less than a specified one for 15 seconds or more when the fan motor decision conditions...
  • Page 112 Error Codes: Outdoor Units ESIE13-02A Troubleshooting (*) See also "Check No.10 - Outdoor Unit: Fan Speed Pulse" on page 159. Part 4 – Troubleshooting...
  • Page 113 ESIE13-02A Error Codes: Outdoor Units Is the Replace the fan motor. fan motor normal? Is the fuse conductive? Replace the fuse. (*1) Properly plug the fan motor connector and then turn ON the power again. Does "E7" appear again? * Replace the outdoor PC board (A1P) ERHQ***V3* / ERLQ***V3* * Replace the inverter PC board (A2P) ERHQ***W1* / ERLQ***W1*...

  • Page 114: X93;E9” Malfunction Of Electronic Expansion Valve

    Error Codes: Outdoor Units ESIE13-02A “E9” Malfunction of Electronic Expansion Valve Remote controller display Method of Method is determined according to the suction pipe superheat degree and electronic expansion valve malfunction opening degree calculated by values of low pressure sensor and suction pipe temperature thermistor. detection Malfunction When the following conditions are met for 10 minutes...
  • Page 115 ESIE13-02A Error Codes: Outdoor Units Troubleshooting Part 4 – Troubleshooting...
  • Page 116 Error Codes: Outdoor Units ESIE13-02A Actually, it is in wet operation. Refer to Check 13,14,15 to eliminate the causes of wet operation. Restart operation. Does the malfunction code "E9" * Replace the outdoor PC board recur? (A1P) ERHQ***V3* / ERLQ***V3* * Replace the control PC board (A1P) ERHQ***W1* / ERLQ***W1* It is believed that factors...

  • Page 117: X93;F3” Malfunctioning In Discharge Pipe Temperature

    ESIE13-02A Error Codes: Outdoor Units “F3” Malfunctioning in Discharge Pipe Temperature Remote controller display Method of Abnormality is detected according to the temperature detected by the discharge pipe temperature malfunction sensor. detection Malfunction When the discharge pipe temperature rises to an abnormally high level decision conditions When the discharge pipe temperature rises suddenly Supposed causes...
  • Page 118 Error Codes: Outdoor Units ESIE13-02A Troubleshooting Is the discharge pipe Abnormality in refrigerant system such as temperature high? gas shortage, faulty compressor, etc. (115°C) Conduct inspection Is the discharge pipe thermistor correctly connected Connect correctly, and operate the unit to PCB (A1P)? again.

  • Page 119: X93;H3” Malfunctioning Hps System

    ESIE13-02A Error Codes: Outdoor Units “H3” Malfunctioning HPS System Remote controller display Method of The protection device circuit checks continuity in the high pressure switch. malfunction detection Malfunction When there is no continuity in the high pressure switch during compressor stops operating. decision conditions Supposed causes Incomplete high pressure switch...
  • Page 120 Error Codes: Outdoor Units ESIE13-02A Troubleshooting protection HPS connector (*1) Connect correctly. correctly connected to outdoor unit PC board? Wait for 10 minutes after the unit stops operating, then check the following. there continuity in each protection HPS? Is there continuity in lead Replace the lead wire.

  • Page 121: X93;H9, J3, J5, J6, J7, J8” Thermistor Or Related Abnormality (Outdoor Unit)

    ESIE13-02A Error Codes: Outdoor Units “H9, J3, J5, J6, J7, J8” Thermistor or Related Abnormality (Outdoor Unit) H9, J3, J5, J6, J7, J8 Remote controller display Method of Abnormality is detected according to the temperature detected by each individual thermistor. malfunction detection Malfunction...

  • Page 122: X93;J1” Malfunction Of Pressure Sensor

    Error Codes: Outdoor Units ESIE13-02A “J1” Malfunction of Pressure Sensor 4.10 Remote controller display Method of The malfunction is detected by the pressure measured with pressure sensor (S1NPH) malfunction detection Malfunction When the defect pressure becomes following: decision conditions Detected pressure -0.05MPa continues 185 s.
  • Page 123 ESIE13-02A Error Codes: Outdoor Units Graphs Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Part 4 – Troubleshooting...

  • Page 124: X93;L1” Faulty Outdoor Pc Board

    Error Codes: Outdoor Units ESIE13-02A “L1” Faulty Outdoor PC Board 4.11 Remote controller display Method of Detect malfunctions by current value during waveform output before compressor startup. malfunction Detect malfunctions by current sensor value during synchronized operation at the time of startup. detection Detect malfunctions using an MP-PAM series capacitor overvoltage sensor.
  • Page 125 ESIE13-02A Error Codes: Outdoor Units Troubleshooting Is the power supply voltage Request an improvement to between 180 and 220 make the power supply voltage VAC? fall within the standard range. Turn OFF the power supply once. Is the lead wire for compressor connected to Connect tightly and correctly.

  • Page 126: X93;L4” Radiation Fin Temperature Increased

    Error Codes: Outdoor Units ESIE13-02A “L4” Radiation Fin Temperature Increased 4.12 Remote controller display Method of Fin temperature is detected by the thermistor of the radiation fin. malfunction detection Malfunction When the temperature of the inverter radiation fin increases abnormally due to faulty heat dissipation. decision conditions Supposed causes Activation of fin thermal switch...
  • Page 127 ESIE13-02A Error Codes: Outdoor Units Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Part 4 – Troubleshooting...

  • Page 128: X93;L5” Dc Output Overcurrent (Instantaneous)

    Error Codes: Outdoor Units ESIE13-02A “L5” DC Output Overcurrent (Instantaneous) 4.13 Remote controller display Method of Malfunction is detected by converting the current flowing to power transistor into voltage with CT1 (DC malfunction current sensor). detection Malfunction When overcurrent has run to power transistor. decision conditions (Actuated even by instantaneous overcurrent) Supposed causes...
  • Page 129 ESIE13-02A Error Codes: Outdoor Units Troubleshooting (*) See also "Check No.11 - Outdoor Unit: Check for Power Transistor" on page 160. Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Part 4 –...

  • Page 130: X93;L8” Dc Output Overcurrent (Instantaneous)

    Error Codes: Outdoor Units ESIE13-02A “L8” DC Output Overcurrent (Instantaneous) 4.14 Remote controller display Method of Malfunction is detected by converting the current flowing to power transistor into voltage with CT1 malfunction (DC current sensor). detection Inverter PC board detects the disorder of position signal. Malfunction When compressor overload (except for when startup) is detected.
  • Page 131 ESIE13-02A Error Codes: Outdoor Units Troubleshooting (*) See also "Check No.11 - Outdoor Unit: Check for Power Transistor" on page 160. Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Part 4 –...

  • Page 132: X93;L9” Stall Prevention (Time Lag)

    Error Codes: Outdoor Units ESIE13-02A “L9” Stall Prevention (Time Lag) 4.15 Remote controller display Method of Malfunction is detected by converting the current flowing to power transistor into voltage with CT1 malfunction (DC current sensor). detection Inverter PC board detects the disorder of position signal. Malfunction When compressor overload (except for when startup) is detected decision conditions...
  • Page 133 ESIE13-02A Error Codes: Outdoor Units Troubleshooting (*) See also "Check No.11 - Outdoor Unit: Check for Power Transistor" on page 160. Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Part 4 –...

  • Page 134: X93;Lc” Malfunction Of Transmission System

    Error Codes: Outdoor Units ESIE13-02A “LC” Malfunction of Transmission System (Between Control PCB and Inverter 4.16 PCB) Remote controller display Method of Checks and sees whether transmission between control and inverter PC board is carried out normally. malfunction detection Malfunction When the transmission is not carried out in a specified period of time or longer.
  • Page 135 ESIE13-02A Error Codes: Outdoor Units Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Part 4 – Troubleshooting...

  • Page 136: X93;P1” Open Phase Or Power Supply Voltage Imbalance

    Error Codes: Outdoor Units ESIE13-02A “P1” Open Phase or Power Supply Voltage Imbalance 4.17 Remote controller display Method of Malfunction is detected according to the voltage waveform of main circuit capacitor built in inverter. malfunction detection Malfunction When the aforementioned voltage waveform becomes identical with the waveform of the power supply decision conditions open phase.

  • Page 137: X93;P4” Malfunction Of Radiator Fin Temperature Thermistor

    ESIE13-02A Error Codes: Outdoor Units “P4” Malfunction of Radiator Fin Temperature Thermistor 4.18 Remote controller display Method of Detection by open or short circuit of the radiator fin temperature thermistor during the compressor malfunction stops operating. detection Malfunction When open or short circuit of the radiator fin temperature thermistor is detected during the compressor decision conditions stops operating Supposed causes...

  • Page 138: X93;Pj” Malfunction Of Radiator Fin Temperature Thermistor

    Error Codes: Outdoor Units ESIE13-02A “PJ” Malfunction of Radiator Fin Temperature Thermistor 4.19 Remote controller display Method of Check whether set value written in E PROM (at factory) or set value of capacity setting adaptor (for malfunction replacement) is the same as outdoor unit capacity. detection Malfunction When the set value on E...

  • Page 139: Error Codes: System Malfunctions

    ESIE13-02A Error Codes: System Malfunctions Error Codes: System Malfunctions “U0” Gas Shortage (Malfunction) Remote controller display Method of (In cooling operation) malfunction Detection based on difference in temperature between temperature preset by remote controller and detection indoor suction air temperature, motorized valve opening degree, compressor frequency and low pressure.
  • Page 140 Error Codes: System Malfunctions ESIE13-02A Troubleshooting See also: (*1) "Check No.13 - Check for Inadequate Refrigerant" on page 161. (*2) "Check No.8 - Clogged Points" on page 158. Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.

  • Page 141: X93;U2” Abnormal Power Supply Voltage

    ESIE13-02A Error Codes: System Malfunctions “U2” Abnormal Power Supply Voltage Remote controller display Method of Malfunction is detected according to the voltage of main circuit capacitor built in the inverter and power malfunction supply voltage. detection Malfunction When the voltage of main circuit capacitor built in the inverter and power supply voltage drop: decision conditions for V3 only: 150-170 VAC or when the power failure of several tons of ms or longer is generated or DC voltage is not in range of 305~380 VDC.
  • Page 142 Error Codes: System Malfunctions ESIE13-02A Troubleshooting (*) Check the several connections according to wiring diagram. V3/W1: Reactor coil resistance value ±0,2 ~ 1 ohm. V3: Capacitor C4 is correctly connected. GREY cable is connected at the side of the grey stroke on the capacitor.

  • Page 143: X93;U3” Underfloor Heating Screed Dry-Out Failure

    ESIE13-02A Error Codes: System Malfunctions “U3” Underfloor Heating Screed Dry-out Failure Remote controller display Method of An interruption during the underfloor heating screed dry-out program is detected. malfunction detection Malfunction Screed dry-out program was interrupted incorrectly (ex. by accident by end user). decision conditions Another error, U3 only generated when other error is solved.

  • Page 144: X93;U4” Malfunction Of Transmission Between Hydro-Box And Outdoor Unit

    Error Codes: System Malfunctions ESIE13-02A “U4” Malfunction of Transmission between Hydro-box and Outdoor Unit Remote controller display Error generation The error is generated when the microprocessor detects that the transmission between the indoor and the outdoor unit is not normal over a certain amount of time. Supposed causes The possible causes are: Wiring indoor-outdoor transmission wire is incorrect...
  • Page 145 ESIE13-02A Error Codes: System Malfunctions (*) See also "Check No.10 - Outdoor Unit: Fan Speed Pulse" on page 159. Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Part 4 – Troubleshooting...

  • Page 146: X93;Uf” Malfunction Of Transmission Between Hydro-Box And Outdoor Unit Or Gas

    Error Codes: System Malfunctions ESIE13-02A “UF” Malfunction of Transmission between Hydro-box and Outdoor Unit or Gas Shortage Remote controller display Method of Check the transmission between the indoor and outdoor units with a microcomputer when the power malfunction turned ON. detection Detect by checking the following temperature differences during compressor operation.
  • Page 147 ESIE13-02A Error Codes: System Malfunctions Troubleshooting See also: (*1) "Check No.13 - Check for Inadequate Refrigerant" on page 161. (*2) "Check No.8 - Clogged Points" on page 158. Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.

  • Page 148: X93;U5” Malfunction Of Transmission Between Hydro-Box And Remote Controller

    Error Codes: System Malfunctions ESIE13-02A “U5” Malfunction of Transmission between Hydro-box and Remote Controller Remote controller display Error generation The error is generated when the microprocessor detects that the transmission between the hydro-box and the remote controller is not normal over a certain amount of time. Supposed causes The possible causes are: Malfunctioning remote controller...

  • Page 149: X93;Ua” Indoor-Outdoor Combination Problem

    ESIE13-02A Error Codes: System Malfunctions “UA” Indoor-Outdoor Combination Problem Remote controller display Error generation The error is generated when there is a combination mismatch between indoor/outdoor. Supposed causes Incorrect unit model. Option [D-04] not confirmed. Functionality of X14A for *AB models. Troubleshooting Model [E-01] value...

  • Page 150: Additional Checks For Troubleshooting

    Additional Checks for Troubleshooting ESIE13-02A Additional Checks for Troubleshooting Check No.1 - Outdoor Unit: Checking the Installation Condition Check No.01 1 To check the installation condition, proceed as follows: Part 4 – Troubleshooting...

  • Page 151: Check No.2 - Outdoor Unit: Checking The Expansion Valve

    ESIE13-02A Additional Checks for Troubleshooting Check No.2 - Outdoor Unit: Checking the Expansion Valve Checking To check the electronic expansion valve, proceed as follows: Step Action Check if the expansion valve connector is correctly inserted in the X12A of A1P. Compare the expansion valve unit with the number of the connector to make sure it is cor- rectly connected.

  • Page 152: Check No.3 - Checking The Thermistors

    Additional Checks for Troubleshooting ESIE13-02A Check No.3 - Checking the Thermistors Thermistors If the cause of the problem is related to the thermistors, then the thermistors should be checked prior to changing the PCB. For more information about these thermistors, see: "External connection diagram"...

  • Page 153: Check No.4 - Resistance Conversion Table (Ambient, Coil, Fin)

    ESIE13-02A Additional Checks for Troubleshooting Check No.4 - Resistance Conversion Table (Ambient, Coil, Fin) The table below is the thermistor (Hydro-box: Suction air, Coil / Outdoor: Ambient, Coil, Pipe Temperature – resistance without discharge, Fin) temperature – resistance conversion table . Temp.
  • Page 154 Additional Checks for Troubleshooting ESIE13-02A Be careful when ordering spare part sensor for tank thermistor. Thermistor Remove the connectors of the thermistors on the PCB, and measure the resistance of each thermistor resistance check using tester. The tank thermistor is for EKHWS-B and EKHWE domestic hot water tanks. The relationship between normal temperature and resistance is shown in the graph and the table below: Hydro-box...

  • Page 155: Check No.5 - Resistance Conversion Table (Discharge Pipe Sensor)

    ESIE13-02A Additional Checks for Troubleshooting Check No.5 - Resistance Conversion Table (Discharge Pipe Sensor) The table below is the discharge pipe thermistor temperature – resistance conversion table . Temperature – resistance Temp. Resist. Temp. Resist. Temp. Resist. (°C) (k ) (°C) (k ) (°C)

  • Page 156: Check No.6 - Evaluation Of Abnormal High Pressure

    Additional Checks for Troubleshooting ESIE13-02A Check No.6 - Evaluation of Abnormal High Pressure Abnormally high pressure level is mostly caused by the condenser side. The following contents are provided by service engineer based on their field checks. Further, the number is listed in the order of degree of influence.

  • Page 157: Check No.7 - Evaluation Of Abnormal Low Pressure

    ESIE13-02A Additional Checks for Troubleshooting Check No.7 - Evaluation of 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 158: Check No.8 - Clogged Points

    Additional Checks for Troubleshooting ESIE13-02A Check No.8 - Clogged Points Temperature differences must occur before or after the clogged points! COMP Indoor Unit Outdoor Unit Check points Check factor Causes Remedies Around Temperature Dust Replace the expansion difference expansion valve. Choked moisture mechanism Reduced effective pipe...

  • Page 159: Check No.10 - Outdoor Unit: Fan Speed Pulse

    ESIE13-02A Additional Checks for Troubleshooting Check No.10 - Outdoor Unit: Fan Speed Pulse 1 Disconnect the connector X106A with the power supply OFF and Operation OFF. 2 Is the voltage between pins 4 and 3 of X106A about 15 VDC after turning the power supply on? 3 Is the voltage between pins 4 and 1 of X106A about 5 VDC? 4 Is the voltage between pins 4 and 7 of X106A about 325 VDC ±...

  • Page 160: Check No.11 - Outdoor Unit: Check For Power Transistor

    Additional Checks for Troubleshooting ESIE13-02A 6.10 Check No.11 - Outdoor Unit: Check for Power Transistor Judgment according to the continuity check by using an analog tester: 1 Do not touch the charged area (high voltage) for 10 minutes after turning the power supply off. 2 If you must touch such an area, make sure that the power supply voltage of power transistor is 50 V or less.

  • Page 161: Check No.13 - Check For Inadequate Refrigerant

    ESIE13-02A Additional Checks for Troubleshooting 6.11 Check No.13 - Check for Inadequate Refrigerant As criteria for judging whether refrigerant is inadequate or not, refer to the following operating conditions. In cooling operation 1 As suction superheat degree increases due to gas shortage, the electronic expansion valve tends to open (opens fully) in order to avoid overheat operation.

  • Page 162: Check No.14 - Check For Excessive Refrigerant Charging

    Additional Checks for Troubleshooting ESIE13-02A 6.12 Check No.14 - Check for Excessive Refrigerant Charging As criteria for judging whether refrigerant is excessively charged or not, refer to the following operating conditions. In cooling operation 1 Because high pressure rises due to excessive charging, overload control is carried out and capacity tends to run short.

  • Page 163: Check No.15 - Check For Factors Causing Wet Operation

    ESIE13-02A Additional Checks for Troubleshooting 6.13 Check No.15 - Check for Factors Causing Wet Operation Note Reference values for superheat degree to be used in the judgement of wet operation: 1 Suction pipe superheat degree: 4°C or more 2 Discharge pipe superheat degree: 5°C or less (The values above must be used only for reference purposes.

  • Page 164: Check No.16 - Troubleshooting Yonos Para Inverter Pump (Only For Eh/Vb004-008)

    Additional Checks for Troubleshooting ESIE13-02A 6.14 Check No.16 - Troubleshooting Yonos Para Inverter Pump (Only for EH/VB004-008) Meaning Diagnostic Cause Remedy Lights Pump in operation Pump runs according its Normal operation green setting Blinks RKA model: Pump runs during 10 min Normal operation quick in air venting function.

  • Page 165: Repair

    ESIE13-02A Part 5 Repair What is in this part? This part contains the following chapters: Chapter See page 1–Tips and Tricks Part 5 – Repair...

  • Page 166: Tips And Tricks

    Tips and Tricks ESIE13-02A Tips and Tricks Not available at this moment Part 5 – Repair...

  • Page 167: Maintenance

    ESIE13-02A Part 6 Maintenance What is in this part? This part contains the following chapters: Chapter See page 1–Maintenance Schedule Part 6 – Maintenance...

  • Page 168: Maintenance Schedule

    Check for correct operation of the pressure relief valve by turning the red knob on the valve counter-clockwise: If you do not hear a clacking sound, contact your local Daikin dealer. In case the water keeps running out of the unit, close both the water inlet and outlet shut-off valves first and then contact your local Daikin dealer.
  • Page 169 ESIE13-02A Maintenance Schedule GAS BOILER SYSTEM COMMISSIONING CHECKLIST This Commissioning Checklist is to be completed in full by the competent person who commissioned the boiler as a means of demonstrating compliance with the appropriate Building Regulations and then handed to the customer to keep for future reference. s instructions and complete this Benchmark Commissioning Checklist will invalidate the warranty.
  • Page 170 Maintenance Schedule ESIE13-02A Part 6 – Maintenance...

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