Haier FlexFit Pro Series Service Manual
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Haier FlexFit Pro Series Service Manual

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FlexFit PRO
SYJS-04-2017REV.B
Edition： 2017-04
Table of Contents
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Summary of Contents for Haier FlexFit Pro Series

  • Page 1 FlexFit PRO SYJS-04-2017REV.B Edition： 2017-04...

  • Page 2: Table Of Contents

    FlexFit PRO CONTENTS Part 1 General Information ............................1 1. Lineup ..................................2 2. Features ................................3 Part 2 Indoor Unit Technical Overview - Wall Mount ....................5 1.Components................................. 5 2.Testing.................................13 3.Error Codes.................................15 ..

  • Page 3: Part 1 General Information

    FlexFit Pro Part 1 General Information Part 1 General Information ............................1 1. Lineup ..................................2 2. Features ................................3 3.Indoor Unit Technical Overview - Wall Mount ....................5 4.Components................................. 5 5.Testing.................................13 6.Error Codes.................................15...

  • Page 4: Lineup

    FlexFit Pro 1. Line up Model Apperance 1U24LP2VHA 1U36LP2VHA Outdoor unit 1U48LP2VHA Model Apperance Indoor unit High-Wall AW24LP2VHA AW36LP2VHA Model Apperance AL24LP2VHA AL36LP2VHA 4-Way Cassette AL48LP2VHA Indoor unit AM24LP2VHA Medium Esp Duct AM36LP2VHA AM48LP2VHA Model Apperance Panel 4-Way Cassette PB-950KB...

  • Page 5: Features

    FlexFit Pro 2. Features Double side 4 handles Two handles on each side make installation a breeze. Stylish Design Built-in service valves mean a clean looking exterior and allow for a 4-direction line set connection. Easy Installation "888" Digital Display Easy for technicians to check running parameters and error codes.
  • Page 6 FlexFit Pro Low Sound Level Super big inlet grille Inlet grille is 23% larger than conventional models, which means quiet operation and lower air speed. New Fan Larger size and aerodynamic design mean low sound and less resistance. Comfort 360° air supply 360 degree air pattern eliminates dead air spots and 4 way air flow Unique 360°...
  • Page 7 FlexFit Pro System Type Wall Mount Wall Mount Model Name and Outdoor 1U24LP2VHA 1U36LP2VHA Operation Range Indoor AW24LP2VH* AW36LP2VH* Voltage, Cycle, Phase V/Hz/- 208-230/60/1 208-230/60/1 Wire Size between ID and OD 14/4 AWG Stranded 14/4 AWG Stranded Power Supply Maximum Fuse Size A Minimum Circuit Amp A Rated Capacity Btu/hr 24000...
  • Page 8 FlexFit Pro...
  • Page 10 AW24LP2VHA AW36LP2VHA...
  • Page 21 FlexFit Pro Part 3 Indoor Units--4-Way Cassette Type 1. Features ................................20 ..............................21 3. Dimensions ................................24 .............................25 5. Air Velocity and Temperatures ...........................26 6. Installation .................................30...
  • Page 22 FlexFit Pro 1. Feature Stylish Grille Design "Spiral" panel Spiral panel concept is a Haier exclusive. Full-closing Panel Flap is hidden during the off cycle for an attractive look and low energy loss. ABS Panels Bright white color won't yellow over time.
  • Page 23 FlexFit Pro 2. Specifications System AL24LP Model Name Outdoor 1U24LP2VHA Indoor AL24LP2VH* Rated Capacity Btu/hr 24000 Capacity Range Btu/hr 6800-27000 Rated Power Input W 2,087 Cooling SEER 11.5 Moisture Removal Pt./h Rate Heating Capacity 47°F Btu/hr 27300 Heating Capacity Range Btu/hr 6800-30500 Heating Rated Power Input W...
  • Page 24 FlexFit Pro System AL36LP Model Name Outdoor 1U36LP2VHA Indoor AL36LP2VH* Rated Capacity Btu/hr 35000 Capacity Range Btu/hr 8500-37500 Rated Power Input W 3,500 Cooling SEER Moisture Removal Pt./h Rate Heating Capacity 47°F Btu/hr 36500 Heating Capacity Range Btu/hr 8500-38500 Heating Rated Power Input W 3,253 HSPF...
  • Page 25 FlexFit Pro System AL48LP Model Name Outdoor 1U48LP2VHA Indoor AL48LP2VH* Rated Capacity Btu/hr 45000 Capacity Range Btu/hr 11900-52800 Rated Power Input W 4,286 Cooling SEER 10.5 Moisture Removal Pt./h 11.0 Rate Heating Capacity 47°F Btu/hr 49000 Heating Capacity Range Btu/hr 13600-61000 Heating Rated Power Input W...

  • Page 26: Dimensions

    FlexFit Pro 3. Dimensions AL24LP2VHA AL36LP2VHA 37 3/8(950) 30 (760) 33(840) AL48LP2VHA 30(760) 37 3/8(950) 33(840)
  • Page 27 FlexFit Pro 4. PCB Configuration CN26...
  • Page 28 FlexFit Pro 5. Air velocity and temperature distribution AL24/36LP2VHA: a. Cooling and air velocity Cooling 33 degree flap angle Air velocity distribution 8.9ft 6.6ft 2.5m/s 2.5m/s 1.5m/s 1.5m/s 3.3ft 0.5m/s 0.5m/s 13ft 13ft 9.8ft 6.6ft 3.3ft 3.3ft 6.6ft 9.8ft b. Cooling and temperatures Cooling 33 degree flap angle Temperature distribution...
  • Page 29 FlexFit Pro c. Heating and air velocity Heating 60 degree flap angle Air velocity distribution 8.9ft 6.6ft 3.0m/s 3.0m/s 2.0m/s 2.0m/s 3.3ft 1.0m/s 1.0m/s 13ft 9.8ft 6.6ft 3.3ft 13ft 3.3ft 6.6ft 9.8ft d. Heating/Temperature distribution Heating 60 degree flap angle Temperature distribution 8.9ft 6.6ft...
  • Page 30 FlexFit Pro AL48LP2VHA a. Cooling and air velocity Cooling 33 degree flap angle Air velocity distribution 8.9ft 6.6ft 2.5m/s 3.0m/s 1.5m/s 2.0m/s 3.3ft 1.0m/s 0.5m/s 13ft 13ft 9.8ft 6.6ft 3.3ft 9.8ft 3.3ft 6.6ft b. Cooling and temperatures Cooling 33 degree flap angle Temperature distribution 8.9ft 6.6ft...
  • Page 31 FlexFit Pro c. Heating and air velocity Heating 60 degree flap angle Air velocity distribution 8.9ft 6.6ft 3.5m/s 3.5m/s 2.5m/s 2.5m/s 3.3ft 1.5m/s 1.5m/s 13ft 13ft 6.6ft 9.8ft 3.3ft 3.3ft 6.6ft 9.8ft d. Heating and temperatures Heating 60 degree flap angle Temperature distribution 8.9ft 6.6ft...

  • Page 32: Installation

    FlexFit Pro Introduction - Overview 6. Installation The Cassette Indoor Air Handler ships consisting of a Factory Supplied Remote cassette assembly and operational louver. The Cassette See Section F for more information Indoor Unit is operated via a factory supplied remote control.
  • Page 33 FlexFit Pro The cassette unit comes with a grey connection hose with Air Delivery Clearances clamp. This hose is connected to the cassette assembly discharge hose port. The other end of the hose is sized to Be certain to maintain proper clearances around the accept 3/4 ‘’...
  • Page 34 FlexFit Pro Threaded Rod Mounting Information The Cassette unit should be mounted to the building structure using threaded rods. The threaded rods should have washers and nuts to allow the height and level of the cassette to be adjusted. items. The materials required for mounting to the brackets on the cassette assembly include: 4- 3/8”...
  • Page 35 FlexFit Pro Step 2.3 settings.) Step 2.6 cassette unit to the condensate pump discharge pipe of the cassette. Tighten the clamp securely. Using 3/4 “ PVC, system. Step 2.7 Remove the electrical box cover. Remove the rubber grommet and insert a 1/2 inch electrical connector and reducing washer.
  • Page 36 FlexFit Pro Step 2 - Installation of the Cassette Unit Step 2.5A Step 2.8A Step 2.5B Step 2.8B Step 2.6 Step 2.8C Step 2.7 Step 2.8D...
  • Page 37 FlexFit Pro...
  • Page 38 FlexFit Pro Part 4 Indoor Units-High Static Duct Type 1. Features ................................37 ..............................38 3. Dimensions ................................41 4. Wiring diagrams ..............................43 5. Instalaltion .................................45...

  • Page 39: Features

    2500 2500 2500 2500 m/h³ m/h³ m/h³ m/h³ 100% 100% 100% 100% reach 120pa for Haier duct 2000 Up to 3 fans maintain desired air volume as static pressure 100Pa 1500 50po 70po 100po 120po changes. Common 70Pa Air Flow Oniy 68% airflow when the ESP...
  • Page 40 FlexFit Pro 2. Specifications System AM24LP Model Name Outdoor 1U24LP2VHA Indoor AM24LP2VH* Rated Capacity Btu/hr 24000 Capacity Range Btu/hr 6800-30700 Rated Power Input W 2,182 Cooling SEER Moisture Removal Pt./h Rate Heating Capacity 47°F Btu/hr 26500 Heating Capacity Range Btu/hr 6800-34100 Heating Rated Power Input W...
  • Page 41 FlexFit Pro System AM36LP Model Name Outdoor 1U36LP2VHA Indoor AM36LP2VH* Rated Capacity Btu/hr 35000 Capacity Range Btu/hr 8500-37500 Rated Power Input W 3,500 Cooling SEER Moisture Removal Pt./h Rate Heating Capacity 47°F Btu/hr 37500 Heating Capacity Range Btu/hr 8500-41000 Heating Rated Power Input W 3,283 HSPF...
  • Page 42 FlexFit Pro System AM48LP Model Name Outdoor 1U48LP2VHA Indoor AM48LP2VH* Rated Capacity Btu/hr 47000 Capacity Range Btu/hr 11900-54500 Rated Power Input W 4,476 Cooling SEER 10.5 Moisture Removal Pt./h 11.0 Rate Heating Capacity 47°F Btu/hr 52000 Heating Capacity Range Btu/hr 13600-64800 Heating Rated Power Input W...

  • Page 43: Dimensions

    FlexFit Pro 3. Dimensions 3.1 AM24LP2VHA 31 1/2 (800) air inlet 38 11/16(983) 37 5/16(947) 9 13/16(250) 9 5/16(235) 9 (230) 5 3/16(131) 5 11/16(145) 31 1/2(800) 38 11/16(983) air outlet 34(863) 11 5/16(288) 11 5/16(288) 11 5/16(288) 33 1/2(850)
  • Page 44 FlexFit Pro 3.2 AM36LP2VHA AM48LP2VHA 50 5/8(1286) return air 61 1/4(1556) 59(1500) 9 7/8(251) 9 1/4(235) 9 1/4(235) 6 5/8(168) 50 5/8(1286) 61 5/16(1556) supply air 56 1/2(1435) 58 1/2(1486)
  • Page 45 FlexFit Pro 4. Wiring diagrams AM24LP2VHA...
  • Page 46 FlexFit Pro Super Match Smatr Power AM36LP2VHA AM48LP2VHA A B C...
  • Page 47 FlexFit Pro 5. Installation Introduction - Overview High ESP Duct Product Information The High ESP Duct Indoor Air Handler ships consisting of a YR-E17 Wired Controller single assembly. The High ESP Duct indoor unit is operated See Section E for more information via a factory supplied wired remote control.
  • Page 48 FlexFit Pro Intr oduction - Overview Electrical Power Condensate Handling Follow all local codes and regulations when installing electrical The High ESP Duct unit has a built-in condensate pump and wiring. water level safety switch. There are also two optional ports for gravity drainage.
  • Page 49 FlexFit Pro Step 1 - Preparation Required Tools for Installation Procedure for Selecting the Location • Drill where you have enough space to position • Wire Snipper Note: • Hole Saw 2 3/4” the unit. 1) R-410A refrigerant is a safe, nontoxic •...
  • Page 50 FlexFit Pro Step 2 - Installation of the High ESP Duct Unit Step 2.1 Step-by-step Installation Guide Step 2.1 Determine and mark the position of where the High ESP Duct unit is to be installed. Install the hardware necessary to mount the threaded rods. Always select a location strong enough to support the indoor High ESP Duct unit.
  • Page 51 FlexFit Pro Step 2 - Installation of the High ESP Duct Unit Step 2.5 Step 2.7A Step 2.7B Step 2.5A Re-install electrical box cover Step 2.6 Step 2.8 Rear air inlet Diffuser Return Duct Bottom air inlet Step 2.7 Diffuser Return Duct...
  • Page 52 FlexFit Pro Step 3 - Electrical Connections Electrical Connections Indoor and Outdoor Units 14/4 AWG stranded wire only. (Central Controller Not Used) Maintain 10 feet of separation between TV and any radio wiring. Outdoor unit Indoor uni t 3wire 1 4/4AWG Control Wiring Power Wiring...

  • Page 53: Part 5 Outdoor Units

    FlexFit Pro Part 5 Outdoor Units ..............................50 2. Dimensions ................................53 3. Piping ................................55 4. Wiring diagrams ..............................55 5. Installation .................................58...
  • Page 54 FlexFit Pro 1. Specifications Item Model 1U24LP2VHA Power cable H05RN-F 3G 4.0mm Communication cable/Connecting cable H05RN-F 4G 2.5mm Power source N, V, Hz 1PH, 220-240V~, 50/60Hz Start current Unit model (color) 1U24LP2VHA (WHITE) Model/Manufacture/ TNB220FFEMC place Oil model FV50S Compressor Oil charging Type Rotary...
  • Page 55 FlexFit Pro Item Model 1U36LP2VHA Power cable H05RN-F 3G 4.0mm Communication cable/Connecting cable H05RN-F 4G 2.5mm Power source N, V, Hz 1PH, 220-240V~, 50/60Hz Start current Unit model (color) 1U36LP2VHA (WHITE) Model/Manufacture/ TNB306FPPMC place Oil model FV50S Compressor Oil charging Type Rotary Type×Number...
  • Page 56 FlexFit Pro Item Model 1U48LP2VHA Power cable H05RN-F 5G 2.5mm Communication cable Connecting cable H05RN-F 4G 2.5mm Power source N, V, Hz 3N~, 380~415, 50/60Hz Start current Unit model (color) 1U48LP2VHA MNB42FFAMC-L (MITSUBISHI Model/Manufacture/place ELECTRIC COMPRESSOR CO., LTD) Oil model PVE (FV50S) Compressor Oil charging...

  • Page 57: Dimensions

    FlexFit Pro 2. Dimensions 1U24LP2VHA 1U36LP2VHA 37 3/8(950) 15 5/8(396) 23 5/8(600) 23 1/2(596)
  • Page 58 FlexFit Pro 1U48LP2VHA 37 3/8(950) 11 3/16(285) 15 5/8(396) 23 5/8(600)

  • Page 59: Piping

    FlexFit Pro 3. Piping Condensor middle Defrosting temp.sensor Te temp.sensor Tcm Outdoor ambient temp. sensor Tai Heating Maintance valve Cooling High pressure switch Discharging temp.sensor Td Compressor Low pressure switch Sunction temp.sensor Ts Liquid -gas segerator Cooling Indoor coil temp.sensor Tc Indoor ambient temp.sensor Tai...

  • Page 60: Wiring Diagrams

    FlexFit Pro 4. Wiring diagrams 1U36LP2VHA 1U36LP2VHA...
  • Page 61 FlexFit Pro 1U48LP2VHA...

  • Page 62: Installation

    FlexFit Pro 5. Installation Step 1 - Installation of the Outdoor Unit Attaching Drain Elbow to Outdoor Unit Step - 1.1 If attaching the supplied drain elbow to the outdoor unit, do so prior to attaching the refrigerant lines and wiring. Step1.2 Step 1.1 Electrical Connections for the Outdoor Unit...
  • Page 63 FlexFit Pro Step - 2.3 standard wrench, and one torque wrench. See Table 1 for the Forced fastening without careful centering may Half union Flare nut damage the threads and cause a leakage of gas. Step 2.3 Pipe Diameter(ǿ) Fastening torque Liquid side6.35mm(1/4") 18N.m/13.3Ft.lbs Liquid/Gas side9.52mm(3/8") 42 N.m/30.1Ft.lbs...
  • Page 64 FlexFit Pro Step - 3.3 Remove the adapter and hose connection from the suction line port, and replace the cap. Hoses should not be removed and service valves should not be opened until any additional refrigerant needed for a refrigerant line longer than 25 ft.
  • Page 65 FlexFit Pro Step 4 - Charging See Steps 5.2 - 5.5 for evacuating the system prior to System Test charging. The standard lineset length is 25ft. If the installation length is different, adjust the refrigerant charge Using the instruction manual, show the customer how to by 0.5.
  • Page 66 1.5 times the height and width of the unit and allow 24" clearance for air flow. Lacking a location that will satisfy the above Sea breeze conditions, contact Haier directly. • Install the outdoor unit in a place where water can drain smoothly. dust on the outdoor coil.

  • Page 67: Part 6 Controls And Troubleshooting

    FlexFit Pro Part 6 Controls and Troubleshooting 1. Indoor PCB ..............................64 2. Indoor Dip Switches ............................65 3. Outdoor PCB ..............................68 4. Error codes ................................70 5. Troubleshooting Error Codes ..........................83 6. Functions ................................92 7. Controllers ..............................104...

  • Page 68: Indoor Pcb

    FlexFit Pro 1. Indoor PCB 1.1 AL24LP2VHA AL36LP2VHA AL48LP2VHA PCB 0151800208 1.2 AM24LP2VHA PCB 0151800267 1.3 AM36LP2VHA AM48LP2VHA PCB 0151800106E...

  • Page 69: Indoor Dip Switches

    FlexFit Pro 2. Indoor Dip Switches Settings as shipped AL24LP2VHA AL36LP2VHA AL48LP2VHA : PCB 0151800208 BM1 (1-ON, 0-OFF) Running Capacity (SW1-1→SW1-3) Unit Type Room card mode Description SW1-4 SW1-1 SW1-2 SW1-3 SW1-5 SW1-6 SW1-7 SW1-8 Capacity: 24kBTU(7.1kW) Capacity: 30kBTU(9.0kW) Capacity: 35kBTU(10.5kW) Capacity: 42kBTU(12.5kW) Capacity: 48kBTU(14.0kW_ Room card invalid(default)
  • Page 70 FlexFit Pro AM24LP2VHA PCB 0151800267 SW1-1 SW1-2 SW1-3 SW1-4 SW1-5 SW1-6 SW1-7 SW1-8 Description AM24LP2VHA Room card invalid(default) Room card valid Cool and heat(default) Cool only External alarm output(default) Fresh air Without filter clean remind (default) With filter clean remind ESP DUCT ( USA) EU.
  • Page 71 FlexFit Pro AM36LP2VHA AM48LP2VHA PCB 0151800106E BM1 (1-ON, 0-OFF) Room Running Capacity (SW1-1→SW1-3) Unit Type card mode SW1-1 SW1-2 SW1-3 SW1-6 SW1-7 SW1-8 Description SW1-4 SW1-5 AM36LP2VHA AM48LP2VHA Room card valid Room card invalid(default) Cool only Cool and heat(default) Medium ESP DUCT High ESP DUCT Wired controller communication address Indoor unit Address...

  • Page 72: Outdoor Pcb

    FlexFit Pro 3. Outdoor PCB PCB: 0151800054B Power module: 0150401824...
  • Page 73 FlexFit Pro Outdoor Dip Switches SW8: Dip switch setting SW1-1 SW1-2 SW1-3 SW1-4 SW1-5 SW1-6 SW1-7 SW1-8 Description Manually forced operation invalid(default) ---- ---- ---- ---- ---- ---- ---- Manually forced operation valid ---- ---- ---- ---- ---- ---- ---- Manually forced heating(default) ---- ----...

  • Page 74: Indoor Unit Pcb

    FlexFit Pro 4. Error Code 4.1 Failure code indoor unit AL24LP2VHA AL36LP2VHA AL48LP2VHA LED flash times of LR.Recever Contents of malfunction Possible reasons indoor PCB digital display LED4 LED1 Malfunction of indoor unit ambient Sensor disconnected, broken, shorted, temperature sensor or at wrong position.
  • Page 75 FlexFit Pro Large Cassette Error Code Logic Cassette panel IR Corresponds to receiver digital display outdoor error Description of malfunction Remarks code (flashing) Malfunction of indoor unit ambient temperature sensor Malfunction of indoor unit piping temperature sensor PCB EEPROM failure Malfunction of indoor Abnormal communication between indoor and outdoor unit.
  • Page 76 FlexFit Pro Large Cassette Error Code Logic Cassette panel IR Corresponds to receiver digital display outdoor error Description of malfunction Remarks code (flashing) Indoor pipe temperature too high PFC circuit loop overcurrent Temperature too high for compressor driver module Compressor start failure Input overcurrent of the drive module Lack phase of the drive module power supply Malfunction of...
  • Page 77 FlexFit Pro High Static Duct Models AM24LP2VHA AM36LP2VHA AM48LP2VHA LED flash times of Wired indoor PCB controller Description Possible reasons LED4 LED3 display Malfunction of indoor unit ambient Sensor disconnected, broken, shorted, temperature sensor or at wrong position. Malfunction of indoor unit piping Sensor disconnected, broken, shorted, temperature sensor or at wrong position.
  • Page 78 FlexFit Pro 4.2 1U24LP2VHA 1U36LP2VHA 1U48LP2VHA Troubleshooting Error Malfunction Description Diagnosis and Analysis. Remark code EEPROM chip damaged or data wrong or related EEPROM malfunction Non-resumable circuit damaged. PIM (power intelligent module) Input over current occured been detected by PIM’s Resumable hardware over current hardware.
  • Page 79 FlexFit Pro Error Malfunction Description Diagnosis and Analysis Remark code AC power supply of the driver module get voltage DC voltage or AC voltage low lower than 155VAC or driver module get high DC-BUS Resumable voltage lower than 180VDC. Indoor pipe temperature Tm over 63°C, error clear Indoor pipe temperature too high within 3 minutes if temperature goes down and lower Resumable...
  • Page 80 FlexFit Pro 4.3 Power Module Error Codes for 1U24LP2VHA 1U36LP2VHA 1. Drive Status Indication LED display Description LED position Flashing (on 1s, Off 1s) : Drive is operating normally Flashing (on LED 601 (GREEN ) 0.25s off 0.25s, flashes n times and Module board then off 2s as a period) : Module board failure...
  • Page 81 FlexFit Pro PIM temperature protection Temperature more than 105°C, and continue 5 seconds, then drive shutdown protection. Compressor startup failure protection The drive will attempt to start the compressor 5 times, at intervals of 15 seconds. When the drive is making five times the driving signal cannot normally drive the compressor, for the protection of the relevant parts, compressor immediately shut down, and the drive will have the compressor drive failure protection.
  • Page 82 FlexFit Pro DC bus over/under voltage protection Bus voltage>overvoltage shutdown value: the compressor stops, then switches into the bus overvoltage protection. Bus voltage
  • Page 83 FlexFit Pro Device Error Description Protection Value DC bus under voltage shutdown value 180V DC bus under voltage recovery value 200V Communication shutdown protection time PFC open switch current (RMS) PFC open switch voltage 360V PFC off switch current (RMS) Compressor type TNB306FFEMC: Device Error Description...
  • Page 84 FlexFit Pro 4.4 Power module error code checking for 1U48LP2VHA 1. Explanation of LED LED Model Explanation of LED Display LED Location Flashing (on,1s, off,1s) : driver works normally. Flashing (on,0.25s, LED 601 (Green) off, 0.25s, flash several times, then Power module off for 2 seconds ) : power module failure.
  • Page 85 FlexFit Pro PIM temperature protection: Temperature more than 105°C, and continue 5 seconds, then drive shutdown protection. Compressor startup failure protection: The drive will attempt to start the compressor 5 times, at intervals of 15 seconds. When the drive is making five times the driving signal cannot normally drive the compressor, for the protection of the relevant parts, compressor will immediately shut down, and the drive will have the compressor drive failure protection.
  • Page 86 FlexFit Pro DC bus over/under voltage protection: Bus voltage>overvoltage shutdown value, the compressor stop, then drive into the bus overvoltage protection. Bus voltagevoltage recovery value, cancel the bus under voltage protection.

  • Page 87: Troubleshooting Error Codes

    FlexFit Pro 5. Instructions of parameters & Checking Error Codes 5.1 From where to do the parameters checking work? Location of LED and button switches which on the outdoor main control PCB 5.2 Where are the digital LED display and the button switches?
  • Page 88 FlexFit Pro 5.3 What does the Default Display at non-checking mode? a. When outdoor unit gets power, the LED digital display will show the model code first, as following list. MODEL MODEL CODE DISPLAY 1U24LP2VHA 24.1 1U36LP2VHA 36.1 1U48LP2VHA 60.2 b.
  • Page 89 FlexFit Pro d. Then after step c and it will show the speed of the compressor rotor, 000 stands for speed is 0 RPS, 15 stands for 15 RPS, 49 stands for 49 RPS, and so on. e. After Step D, when the indoor temperature reaches the set point, the outdoor unit will shut off and the LED display will be 000.
  • Page 90 FlexFit Pro Fig.4.1...
  • Page 91 FlexFit Pro Fig.4.2...
  • Page 92 FlexFit Pro 5.5 Outdoor Unit LED Display Symbol LED Digital Display Explanation Cool mode Heat mode Fan mode Refrigerant Recovery Manually forced stand by Compressor at OFF status Diagnose Manually forced defrost Parameters checking Co.N Cool mode of EER test condition Co.A Cool mode of SEER test condition A Co.b...
  • Page 93 FlexFit Pro Symbol LED Digital Display Explanation Ht.F Heat mode of SCOP test condition F Ht.H Heat mode of SCOP test condition H Ht.I Heat mode of SCOP test condition I Ht.J Heat mode of SCOP test condition J Quit Frequency (speed of compressor, equals revolutions per second (RPS) ) .
  • Page 94 FlexFit Pro 5.6 Checking current outdoor unit error code If there is malfunction on the outdoor unit, the LED digital display will flashing like this repeating pattern: Error code number flashing LED digital display extinguished Example: Extinguished For an explanation of error codes, refer to the outdoor unit troubleshooting guide. 5.7 View previous error record (diagnosis mode) Step1: Press and hold the MODE button for 5 seconds and release, then the LED digital display will show the current mode and will keep flashing.
  • Page 95 FlexFit Pro DOWN MODE Mode is cool, “Coo”will flashing press and hold for 5 seconds DOWN Scroll pages to view “diA” MODE the other modes flashing by UP or DOWN button DOWN “diA” lit,without flashing MODE Press and hold for 3 seconds DOWN then release MODE...

  • Page 96: Functions

    FlexFit Pro 6. Functions Indoor unit: 6.1.1 Dehumidification operation (no humidity sensor ) 1. The indoor unit will stop and send a signal to shut off the outdoor unit when Tai<60*F NOTE: I do not have a degree symbol, so I used the "*". Please insert the degree symbol. 2.
  • Page 97 FlexFit Pro 2. Cold air prevention control In heating mode, the indoor fan running state is decided by indoor coil temperature (Tm) after compressor starts. Setting airflow 30 (34) Low speed 26 (30) Stop 24 (26) 22 (23) Note: The numbers in the brackets is the temperature control point when the outdoor temperature is more than 10 degrees.
  • Page 98 FlexFit Pro When TM<6°C, the compressor frequency will decrease at the speed of 1HZ/10s; When TM start to rise again, and 6°C<=TM<=8°C, the compressor frequency will remain unchanged. When 8°C
  • Page 99 FlexFit Pro 6.1.10 Timing operation: 1) When using wired controller, unit will be controlled ON/OFF by wired controller 2) When using remote controller, unit will be ON/OFF according to set time by remote controller and current time. 6.1.11 Sleeping function: 1) When using wired controller, unit will be controlled ON/OFF by wired controller 2) When using remote controller, press sleep key to set sleep function including sleeping in heating and sleeping in cooling.
  • Page 100 FlexFit Pro B.Static selection via wired controller: 1. Prepare: wired controller YR-E17, plug wired controller connector to indoor PCB CN3 2. Method: 2.1 In the state of ON and non screen saving state, press Fan + Set keys for 5s to enter static pressure grade adjustment.
  • Page 101 FlexFit Pro Outdoor unit 6.2.1 Compressor discharge temp. (TD) high temp. protection function. If it lasts 3 seconds, the unit will stop. After standing Discharge temperature by 3 minutes, the unit can restart. If it happens 3 times in 60 minutes. The unit stops and alarms. it will disappear if unit is powered on.
  • Page 102 FlexFit Pro 6.2.3 Low pressure protection The low pressure is controlled by simulating evaporating temperature: When cooling, compare the evaporating temp. with the compressor suction temp. and choose the lower one (Teva c) to compare. Teva_c Normal running -25°C The lowest running frequency 20HZ -30°C The lowest running frequency 20HZ -35°C...
  • Page 103 FlexFit Pro 6.2.4 Oil return control Control purpose: Oil return control ensures oil regularly returns to the compressor has been operating at long periods of time at a low speed. Condition: The oil return mode will be entered when the compressor has been operating for at least 5 hours at a speed lower than parameters C HZ (E) and the temperature TC is lower than 122 degrees F.
  • Page 104 FlexFit Pro Process control chart of oil return: Send oil return signal Start Inverter comp. Indication frequency Oil return frequency A Hz (E) 60s Soft Starting OD fan auto Auto Auto adjustment according to cooling mode 4-way valve 25 s 450pulses 450pulses 300pulses (E)
  • Page 105 FlexFit Pro 4. The limitation of the EEV opening Condition Opening Requirement Lower Limit Upper Limit Standard opening of the model, according to the Shut down opening of last time Standby Standard opening of the model, according to the (temperature sensor off) mode before the temperature sensor is off Cooling startup process Execute the standard cooling opening of the model...
  • Page 106 FlexFit Pro 2. Defrosting end contition: After defrosting condition starts, it will last no more than 10 minutes (E) . Using Te to test outdoor heat exchanger frosting condition, if it lasts over accumulative 60 seconds of 7°C (E) or over accumulative 30 seconds of 12°C (E) or over 15°C (E) , defrosting will stop.
  • Page 107 FlexFit Pro Defrosting time sequence is as follows Beginning Inverter compressor Defrosting FQYH Soft startup Outdoor fan motor Send signal to indoor uni 4-way valve Unload valve SV1 Auto Open angle (E) Auto open angel Anti-cold air function Indoor fan motor...

  • Page 108: Controllers

    FlexFit Pro 7. Controller 7.1 Remote Controller: YR-HBS01 External View of Remote Controller...
  • Page 109 FlexFit Pro Loading of the battery 1.Remove the battery cover 2.Insert 2 AAA batteries as illustrated noting battery polarity 3.Reinstall the battery cover Note: The distance between the signal transmission head and the receiver hole should be within 7m without any obstacle as well. When electronic-started type fluorescent lamp or change- over type fluorescent lamp or wireless telephone is installed in the room,the receiver is apt to be disturbed in receiving the signals,so the distance to the indoor unit should be shorter.
  • Page 110 FlexFit Pro (2) After TURBO or QUIET is set. Press TURBO button to show on the screen with fan speed as , then press "FAN SPEED" button to exit; press QUIET button to show on the screen with fan speed as , then press "FAN SPEED"...
  • Page 111 FlexFit Pro 12. SLEEP: (1) Valid during power on. (2) The SLEEP time is fixed to 8 hours and is not adjustable. (3) It is invalid in FAN mode. When setting TIMER ON or TIMER ON to TIMER OFF after setting SLEEP function, once the timer setting is successful, the SLEEP function will be cancelled;...
  • Page 112 FlexFit Pro (2) Auto mode will not start HEAT function automatically, but can set or cancel HEAT function. 20. Timer: (1) TIMER ON • Press "TIMER ON" button, character "ON" is flashing, press "+/-" button to adjust, then press "OK" button to confirm, if "OK"...
  • Page 113 FlexFit Pro Section E - Wired Controller YR-E17 7.2 Wired controller: YR-E17 WIRED CONTROL PANEL FUNCTIONS Features and Interface Clock; Parameter setting/Inquiry; Malfunction display Timer ON/OFF; Sleep function; Parameter setting/Inquiry; Malfunction display ROOM/SET temp. and humidity display, each step is 0.5°C (1°F). For example, if the temp is 25°C (77°F), it will display 25.°C (77°F).
  • Page 114 FlexFit Pro The communication wiring is 189ft (4.8 meter) long; if the actual length is more than it, please distribute wiring A TYPE 1, FOR AL24/36/42/48LP2VHA, AM24LP2VHA according to below table: Indoor 1 Indoor N Indoor 15 Indoor16 Indoor 2 (master unit) Wire controller Wire controller...

  • Page 115: Dip Switches

    FlexFit Pro WIRED CONTROLLER INSTALLATION Wired Controller Wiring Instructions Dimensions Unit: inch (mm) Dip Switch Dip Switch ON/OFF Function Default Setting Set as the slave controller SW1-1 Set as the master controller Ambient temp. display available SW1-2 Ambient temp. display unavailable Display ambient temp.
  • Page 116 FlexFit Pro WIRED CONTROLLER OPERATION Settings & Functions Switching between Fahrenheit & Celsius Initialization To switch from Celsius to Fahrenheit, select the mode you The wired controller will wish to operate (COOL, HEAT, DRY, INTELLIGENT/AUTO). momentarily display Press and hold the  key to reach 30 °C then continue holding all display icons upon the ...
  • Page 117 FlexFit Pro WIRED CONTROLLER OPERATION Settings & Functions Timer Function Setting ECO Energy Saving Function NOTE: This function requires the ON/OFF key LED to be NOTE: The display backlight must be illumi- turned ON and the screen backlight to be illuminated. nated before proceeding.
  • Page 118 FlexFit Pro WIRED CONTROLLER OPERATION Settings & Functions Left/Right/Up/Down Swing Forced Cooling/Heating Note: This function requires the ON/OFF key LED to be The swing function deter- turned OFF and the screen backlight to be illuminated. mines air circulation. Forced Cooling 1.

  • Page 119: Functions

    FlexFit Pro WIRED CONTROLLER OPERATION Settings & Functions Sleep Function Other Functions Note: These functions require the ON/OFF key LED to be NOTE: This function requires the ON/OFF key LED to be turned OFF and the screen backlight to be illuminated. turned ON and the screen backlight to be illuminated.

  • Page 120: Part 7 Appendix

    FlexFit Pro Appendix Sensor Characteristic Model Sensor Name Part Code Charcteristic R25=23KΩ±3% Ambient temp. sensor 001A3900159 B25/50=4200K±3% AL24LP2VHA AL36LP2VHA AL48LP2VHA AM24LP2VHA AM36LP2VHA AM48LP2VHA R25=10KΩ±3% Indoor coil temp. sensor 0010401922 B25/50=3700K±3% R25=10KΩ±3% Defrosting temp. sensor 0010450194 B25/50=3700K±3% R25=10KΩ±3% Ambient temp. sensor 0010450192 B25/50=3700K±3% 1U24LP2VHA...
  • Page 121 Haier Commercial Air Condition Web: Http://www.haier.com Haier reserves the right to make change without any notice.

This manual is also suitable for:

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