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Suneco ACHP-H04/4R2HA-M Maintenance Manual

R290 monoblock air to water heat pump
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Summary of Contents for Suneco ACHP-H04/4R2HA-M

  • Page 2: Table Of Contents

    Contents Part1 General Information ....................3 Part2 Component Layout and Refrigerant Circuits ............4 Part3 Control ........................13 Part4 Diagnosis and Troubleshooting ................22 Appendix ..........................70...

  • Page 3: Part1 General Information

    Part 1 General Information 1. Unit Capacities and External Appearance Capacity Models Appearance ACHP-H04/4R2HA-M ACHP-H04/4R2HA-M(NE) ACHP-H06/4R2HA-M ACHP-H06/4R2HA-M(NE) ACHP-H08/4R2HA-M ACHP-H08/5R2HA-M ACHP-H08/4R2HA-M(NE) ACHP-H10/4R2HA-M 10kw ACHP-H10/5R2HA-M ACHP-H10/4R2HA-M(NE) ACHP-H12/4R2HA-M ACHP-H12/5R2HA-M 12kw ACHP-H12/4R2HA-M(NE) ACHP-H12/5R2HA-M(NE) ACHP-H14/4R2HA-M ACHP-H14/5R2HA-M 14kw ACHP-H14/4R2HA-M(NE) ACHP-H14/5R2HA-M(NE) ACHP-H16/4R2HA-M ACHP-H16/5R2HA-M 16kw ACHP-H16/4R2HA-M(NE) ACHP-H16/5R2HA-M(NE) Note：“(NE)” means no electric heating...

  • Page 4: Part2 Component Layout And Refrigerant Circuits

    Part 2 Component Layout and Refrigerant Circuits 1. Explosion pattern 1.1 4kw/6kw ACHP-H04/4R2HA-M；ACHP-H06/4R2HA-M...
  • Page 5 BOM Code Part Name Quantity 16321027000046 Top cover plate assembly 16324020000170 Condenser assembly 16421061000067 Big panel 16420013000086 Plastic filter of panel(1) 16321064000068 Small panel assembly 16420013000087 Plastic filter of panel(2) 16421112000048 Vertical shaft 16430034000034 Motor 11321002000050 Motor holder assembly 16322020000030 Electric assembly 16422018000031 Cover of electric controller box...
  • Page 6 1.2 8kw/10kw ACHP-H08/5R2HA-M；ACHP-H10/5R2HA-M...
  • Page 7 BOM Code Part Name Quantity 16321027000045 Top cover plate assembly 16324020000168 Condenser assembly 16421061000065 Big panel 16420013000084 Left side decorated plate 16321064000063 Small panel assembly 16420013000085 Right Side Decorated Plank 16421031000249 Vertical shaft 16430034000032 Motor 16321061000011 Motor holder assembly 16322020000028 Electric assembly 16325020000152 Four-way valve pipeline assembly...
  • Page 8 1.3 10kw/12kw/16kw ACHP-H12/5R2HA-M；ACHP-H14/5R2HA-M；ACHP-H16/5R2HA-M...
  • Page 9 BOM Code Part Name Quantity 16321027000045 Top cover plate assembly 16324020000169 Condenser assembly 16421061000065 Big panel 16420013000084 Left side decorated plate 16321064000063 Small panel assembly 16420013000085 Right Side Decorated Plank 16421031000249 Vertical shaft 16430034000032 Motor 16321061000012 Motor holder assembly 16322020000029 Electric assembly 16325020000153 Four-way valve pipeline assembly...

  • Page 10: Piping Diagrams

    2. Piping Diagrams *Units containing (NE) in the model number do not include electric heating *Just 12-16kW unit has accumulator Code Means Code Means Discharge temperature Tico Gas pipe temperature Ambient temperature Inlet water temperature Tdef Defrost temperature Two1 Outlet water temperature1 Suction temperature Two2 Outlet water temperature 2...

  • Page 11: Key Components

    3. Key components 3.1 Accumulator Stores liquid refrigerant and oil to protect compressor from liquid hammering. 3.2 EXV (Electronic expansion valve) Controls refrigerant flow and reduces refrigerant pressure. 3.3 Four-way value Controls refrigerant flow direction. Electrify in cooling mode and outage in heating mode. When electrify, the air side heat exchanger functions as a condenser and water side heat exchanger functions as an evaporator;...

  • Page 12: Refrigerant Flow Diagrams

    4. Refrigerant Flow Diagrams 4.1 Heating and domestic hot water operation 4.2 Cooling and defrosting operation...

  • Page 13: Start-Stop Control

    Part 3 Control 1. Start-stop control 1.1 Stop Operation The stop operation occurs for one of the following reasons: 1)Abnormal shutdown: in order to protect the compressors, if an abnormal state occurs the system makes a stop with thermos off op- eration and an error code is displayed on the monoblock PCB digital displays and wired controller.

  • Page 14: Operation Control

    2. Operation Control 2.1 Component Control during Normal Operation Heating and Domestic Hot Water Operation Component Wiring diagram label 4-16kW Control functions and states Inverter compressor COMP ● According to the compressor startup control DC fan motor ● According to ambient temperature According to ambient temperature 、Suction Electronic expansion valve ●...

  • Page 15: Compressor Step Control

    2.3 Compressor Step Control Normal up and down frequency:1Hz/s 2.4 Four-way Valve Control When heating or DHW operation, four-way valve outage; When cooling or defrosting, four-way valve electrify. 2.5 Electronic Expansion Valve Control Adjustment range: 0-480PLS Power-on: Reset the electronic expansion valve Control adjustment: Determine the initial opening according to the operating mode and outdoor ambient temperature, and then adjust according to the suction superheat and exhaust superheat 2.6 Outdoor Fan Control...

  • Page 16: High Pressure Protection Control

    3. Start-stop control 3.1High Pressure Protection Control Pd > 3.2MPa, indicating high pressure protection H1 Pd < 2.6MPa, the fault is recovered High pressure protection occurs for three consecutive times, and the fault is locked. Power off and restart is required to eliminate the fault 3.2 Low Pressure Protection Control Pd <...
  • Page 17 3.5 Voltage Protection Control This control protects the machine from abnormally high or abnormally low voltages. When the voltage of AC power supply is at or above 265V (458V for 3ph) for more than 30 seconds, the system displays 36 protec- tion and the unit stops running.

  • Page 18: Special Operation

    4. Special Operation 4.1 Oil Return Operation In order to prevent the compressor from running out of oil, the oil return operation is conducted to recover oil that has flowed out of the compressor and into the refrigerant piping. 1) The oil return operation starts when the following condition occurs: The compressor frequency is less than 50HZ, and the accumulated running time is 4h.
  • Page 19 4.3 Second zones control After the double zone control is opened, the floor heating mixed pump continues to run. 1) If the floor heating water inlet temperature≥(Tset_FLH+dTwi_FLH_ON),the mix valve turn off. 2) If the floor heating water inlet temperature ＜ (Tset_FLH+dTwi_FLH_OFF),the mix valve turn on.. 3) If (Tset_FLH+dTwi_FLH_ON)≤the floor heating water inlet temperature ＜...

  • Page 20: Internal System

    5. Temperature Sensors introduction 5.1 Internal system Sensor name Code Mode Functions ● Discharge superheat control Heating Discharge temperature sensor ● EXV control Cooling ● Discharge temperature protect control Heating ● EXV control Defrosting temperature sensor Tdef ● Defrosting control Cooling ●...

  • Page 21: External System

    5.2 External system Sensor name Code Mode Functions Heating Twt_BT1 Buffer tank temperature sensor ● Buffer tank temperature control Twt_BT2 Cooling ● DHW priority control Heating Domestic hot water tank temperature sensor ● Compressor output control ● DHW ON/OFF control ●...

  • Page 22: Part4 Diagnosis And Troubleshooting

    Part 4 Diagnosis and Troubleshooting 1. Electric Control Box Layout 1.1 ACHP-H04/4R2HA-M；ACHP-H06/4R2HA-M； ACHP-H04/4R2HA-M(NE)；ACHP-H06/4R2HA-M(NE)； Refrigerant system Water system control box control box Refrigerant system Water system PCB...
  • Page 23 1.2 ACHP-H08/4R2HA-M；ACHP-H10/4R2HA-M； ACHP-H08/5R2HA-M；ACHP-H10/5R2HA-M； ACHP-H08/4R2HA-M(NE)；ACHP-H10/4R2HA-M(NE) Water system control box Refrigerant system control box Refrigerant system xWater system PCB...
  • Page 24 1.3ACHP-H12/4R2HA-M；ACHP-H14/4R2HA-M；ACHP-H16/4R2HA-M; ACHP-H12/5R2HA-M；ACHP-H14/5R2HA-M；ACHP-H16/5R2HA-M; ACHP-H12/4R2HA-M(NE)；ACHP-H14/4R2HA-M(NE)；ACHP-H16/4R2HA-M(NE) ACHP-H12/5R2HA-M(NE)；ACHP-H14/5R2HA-M(NE)；ACHP-H16/5R2HA-M(NE) Water system control box Refrigerant system control box Refrigerant system Water system PCB...
  • Page 25 2. PCB 2.1Water System PCB Main PCB Material code：11222542000168 Remark Remark Water mixing valve Plate heat exchanger inlet temperature (TWI) Parallel Indoor coil outlet (TICO) Wired controller Indoor coil inlet (TICI) Refrigerant system communication Variable frequency pump Direct current pump Zero line Antifreeze heating zone Relay PCB...
  • Page 26 Expansion board Material code：11222542000169 Num. Remark Num. Remark Firing line Water system PCB 1kW electric heating firing line 2kW electric heating firing line...
  • Page 27 2.2 Refrigerant System PCB 4-6kW (ACHP-H04/4R2HA-M、ACHP-H06/4R2HA-M Main PCB Material code：11222542000175 Remark Remark Chassis heater Suction temperature sensor (TS) 4-way valve Outdoor ambient temperature sensor (TAO) AC-L Reserve AC-N High pressure sensor Water system communication Reserve DC fan Reserve High pressure switch...
  • Page 28 8-10kW(ACHP-H08/5R2HA-M、ACHP-H10/5R2HA-M) Main PCB Material code：11222543000122 Remark Remark Compressor-W High pressure switch Compressor-V Low pressure switch Compressor-U DC fan GND1 High pressure sensor Electric control box radiator temperature sensor (TRD) Outdoor ambient temperature sensor (TAO) Suction temperature sensor (TS) Oil heater Defrost temperature sensor (TDEF) 4-way valve Mid coil temperature sensor (TCM)
  • Page 29 8-10kW(ACHP-H08/4R2HA-M、ACHP-H10/4R2HA-M、ACHP-H08/4R2HA-M(NE)、ACHP-H10/4R2HA-M(NE)) Main PCB Material code：11222543000127 Remark Remark Compressor-W Water system communication Compressor-V DC fan Compressor-U GND1 High pressure sensor Discharge temperature sensor (TD) Mid coil temperature sensor (TCM) Chassis heater Defrost temperature sensor (TDEF) 4-way valve Suction temperature sensor (TS) Oil heater Outdoor ambient temperature sensor (TAO) Electric control box radiator temperature sensor...
  • Page 30 12-16kW(ACHP-H12/5R2HA-M、ACHP-H14/5R2HA-M、ACHP-H16/5R2HA-M) Main PCB Material code：11222543000123 Num. Remark Num. Remark Compressor-W High pressure switch Compressor-V Low pressure switch Compressor-U DC fan GND1 High pressure sensor Electric control box radiator temperature sensor (TRD) Outdoor ambient temperature sensor (TAO) Suction temperature sensor (TS) Oil heater Defrost temperature sensor (TDEF) 4-way valve...
  • Page 31 12-16kW(ACHP-H12/4R2HA-M、ACHP-H14/4R2HA-M、ACHP-H16/4R2HA-M、ACHP-H12/4R2HA-M(NE)、 ACHP-H14/4R2HA-M(NE)、ACHP-H16/4R2HA-M(NE)) Main PCB Material code：11222543000126 Num. Remark Num. Remark Compressor-W Water system communication Compressor-V DC fan Compressor-U GND1 High pressure sensor Discharge temperature sensor (TD) Mid coil temperature sensor (TCM) Chassis heater Defrost temperature sensor (TDEF) Suction temperature sensor (TS) 4-way valve Oil heater Outdoor ambient temperature sensor (TAO)

  • Page 32: Dip Switch Setting

    2.3 DIP switch setting Panel 1：SW2 Master/Slave Function selection MASTER SLAVE 1 SLAVE 2 SLAVE 3 SLAVE 4 SLAVE 5 SLAVE 6 SLAVE 7 Panel 2：SW1 Capacity Function selection 10KW 12KW 14KW 16KW ※ is OFF, is ON...

  • Page 33: Troubleshooting

    3. Troubleshooting 3.1 Phenomenon analysis Symptom 1: The compressor of the unit cannot start normally. Possible causes Corrective action The unit uses the auxiliary heater to reach the minimum water temperature first (15°C). Check the following items： The unit start-up beyond its operating water temperature range (the ●...
  • Page 34 Symptom 4: The system is making gurgling noises after commissioning. Possible causes Corrective action There is air in the water system. Evacuate the air from the water system. The actions are performed by the installer: ● Adjust the hydraulic balance so that the flow is correctly distribut- Hydraulic balance problem ●...
  • Page 35 Symptom 8: Insufficient space heating occurs when the ambient temperature is low. Possible causes Corrective action Check the following items： ● The auxiliary heater has been activated. ● The circuit breaker for the backup heater's overcurrent protection has been tripped. If the system is equipped with auxiliary heater, the auxiliary heater ●...

  • Page 36: Error Code Table

    3.2 Error Code Table Refrigerant system fault CODE Fault code description B1(H1) High pressure switch fault B4(H4) Low pressure switch fault BD(HJ) Three-phase power supply lacks phase or phase sequence error BE(HE) Unit AC input voltage is too high protection Outdoor ambient temperature sensor fault Defrost temperature sensor fault Discharge temperature sensor fault...
  • Page 37 Water system fault CODE Fault code description Indoor ambient temperature sensor 1 fault Refrigerant liquid pipe temperature sensor fault Refrigerant gas pipe temperature sensor fault Water pump fault Water flow switch fault EE fault Communication fault between refrigerant system and water system Communication fault between wired controller and water system Electric heating overheat protection Electric heating outlet water temperature sensor fault...
  • Page 38 3.3 Troubleshooting Water system a)Temperature sensor fault Water system fault CODE Fault code description Indoor ambient temperature sensor 1 fault Refrigerant liquid pipe temperature sensor fault Refrigerant gas pipe temperature sensor fault Electric heating outlet water temperature sensor fault Inlet water temperature sensor fault Outlet water temperature sensor fault Water tank temperature sensor fault Floor heating room temperature sensor fault...
  • Page 39 Example:...
  • Page 40 Related parts: CODE SENSOR LENGTH RESISTANCE PICTURE AUX SUPPLY NEME (cm) (kΩ) Patch wire Sensor TICI TICO 16430007000290 TWO2 TWO1 16430007000280 1000 16430045000019-12 TWI_FLH 4-6kW: TWT_BT1 16430045000021-13 TWT_BT2 TAI_FLH 8-16kW: TSOLAR 16430045000019-12 b)Communication fault Communication fault CODE Fault code description Communication fault between refrigerant system and water system Communication fault between wired controller and water system Communication fault between master unit and slave unit...
  • Page 41 Example:...
  • Page 43 Related parts: NAME CODE PICTURE MODEL CJ 控制板 RSW-BP-1F5(12KW)( 水力 模块 )-E2(SY) Water system PCB 11222542000168 CJ 控制板 RSW-BP-DC4-1T1(R290) 整 -E1(SY) 4-6kW: 11222542000175 CJ 模块板 QD- 8-10kW 3ph: 11222543000122 33161FH420D7KZAAC6R290-10- 1(SY) Refrigerant system PCB CJ 模块板 QD- 12-16kW 3ph: 11222543000123 33161FH650D7VZAAC6R290-16- 1(SY) CJ 模块板...
  • Page 44 c)Water system component fault Water system component fault CODE Fault code description Water pump fault Electric heating overheat protection Water flow switch fault Water flow switch short circuit protection A5 Error logic: ● Error appear：When port PUMP-C detects pump failure feedback or cannot receive pump feedback signals ●...
  • Page 45 Example: LED status Pump condition Instructions Feedback duty cycle 90% or phase current Plugging protection abnormal abrupt change, more than 0.45S Input voltage < 170V Over/under voltage protection Input voltage > 270V Lack-phase protection The pump detects a current imbalance Current trigger value 2.5A Over current protection Peak value >...
  • Page 46 AF Error logic: ● Error appear：When Port : PRT-SW be disconnected(water temperature > 90±3℃ ), then will appear error code AF ● Error disappear：The fault is rectified after the protection switch automatically resets or manually resets after the water temperature decreases Check step: Example:...
  • Page 47 Related parts: NAME CODE PARAMETERS PICTURE Thermostat AUTO 16422008000091 90±3℃ Thermostat MANUAL 16422008000090 95±5℃...
  • Page 48 A7 Error logic: ● Error appear：Within 150s after the pump turn on，if the FLS disconnected time ≥ 20s，or during the pump is normal running，if the FLS disconnected time ≥ 5s，A7 will disappear ● Error disappear：FLS is back to normal Check step: Example:...
  • Page 49 Related parts: NAME CODE PARAMETERS PICTURE 4-6kW： Thermostat AUTO 16445032000007 0.36±10%m3/h 8-16kW： Thermostat MANUAL 16445032000009 0.6±0.1m3/h...
  • Page 50 98 Error logic: ● Error appear：After the pump stop running, if the FLS still connect ≥ 5s ● Error disappear：FLS is back to normal Check step: Check step: Related parts: NAME CODE PARAMETERS PICTURE 4-6kW： Thermostat AUTO 16445032000007 0.36±10%m3/h 8-16kW： Thermostat MANUAL 16445032000009 0.6±0.1m3/h...
  • Page 51 d)Different mode operation faul Different mode operation fault CODE Fault code description Different mode operation fault AE Error logic: ● Error appear：When two or more adjustable mode thermostats are connected and the mode settings conflict ● Error disappear：Mode setting normal Check step: Related parts:...
  • Page 52 Refrigerant system a)Temperature sensor fault Water system component fault CODE Fault code description Outdoor ambient temperature sensor fault Defrost temperature sensor fault Discharge temperature sensor fault Suction temperature sensor fault Compressor discharge temperature too high protection Radiator temperature too high protection Electric control box chamber temperature too high protection Radiator temperature sensor fault Electric control box chamber temperature sensor fault...
  • Page 53 Example:...
  • Page 55 Related parts: CODE LENGTH RESISTANCE SENSOR NEME PICTURE AUX SUPPLY (cm) (kΩ) Patch wire Sensor 116430007000288 TDEF 11329013000133 E3; E6; E7 Error logic: ● Protection appear：When the sensor detects that the temperature is higher than the EE protection value for 10s, the fault code ap- pears and the unit frequency limits or stops ●...
  • Page 56 Example: Related parts: CODE LENGTH RESISTANCE SENSOR NEME PICTURE AUX SUPPLY (cm) (kΩ) Patch wire Sensor 116430007000288 TDEF 11329013000133...
  • Page 57 b)Pressure fault Pressure fault CODE Fault code description B1(H1) High pressure switch fault B4(H4) Low pressure switch fault High pressure sensor fault High pressure too high protection B1(H1); B4(H4); F1 Error logic: ● Error appear：High / Low pressure switch/sensor be disconnected and lasts for 3s ●...
  • Page 58 Example:...
  • Page 59 Breaking Reset pressure NAME CODE PICTURE pressure (MPa) (MPa) High pressure switch 16426068000006 Low pressure switch 16426068000005 0.03...
  • Page 60 F3 Protect logic: ● Protection appear：High pressure sensor detected Pd ≥ 3.1 Mpa Check step: Example:...
  • Page 61 Related parts: NAME CODE PICTURE Pressure range (MPa) High pressure sensor 16426069000008 0 ~ 3.5...
  • Page 62 c)Control fault Control fault CODE Fault code description Control fault High pressure switch fault B4(H4) Low pressure switch fault D2(J2) Error logic: ● Error appear：Communication data is not received normally for 15s between each communication module ● Error disappear：The communication data can be received normally Check step: Example:...
  • Page 63 Related parts: NAME CODE PICTURE MODEL Water system PCB 11222542000168 CJ 控制板 RSW-BP-1F5(12KW)( 水力模块 )-E2(SY) 4-6kW: 11222542000175 CJ 控制板 RSW-BP-DC4-1T1(R290) 整 -E1(SY) 8-10kW 3ph: CJ 模块板 QD-33161FH420D7KZAAC6R290-10-1(SY) 11222543000122 Refrigerant system 12-16kW 3ph: CJ 模块板 QD-33161FH650D7VZAAC6R290-16-1(SY) 11222543000123 8-10kW 1ph: CJ 模块板 QD-12201FH420D7KZAAC6-R290-1(SY) 11222543000127 12-16kW 1ph: CJ 模块板...
  • Page 64 D5(J5) Error logic: ● Error appear：The dip of the PCB is different from the example in the dial table ● Error disappear：The dip switch is restored Check step: Example:...
  • Page 65 Compressor Pump Motor PCB 2 PCB 1 = ON = OFF PCB connection diagram Function Function selection selection MASTER SLAVE 1 SLAVE 2 SLAVE 3 PCB2 PCB1 SLAVE 4 10KW SLAVE 5 12KW SLAVE 6 14KW SLAVE 7 16KW...
  • Page 66 d)Electric system fault Electric system fault CODE Fault code description BE(HE) Unit AC input voltage is too high protection D7(J7) EE fault Compressor drive IPM module protection Compressor drive hardware protection Compressor drive software protection Compressor drive over current protection Compressor drive over or low-voltage protection Compressor drive built in temperature sensor fault Compressor drive under phase protection...
  • Page 67 Related parts: NAME CODE PICTURE MODEL CJ 控制板 RSW-BP-DC4- 4-6kW: 11222542000175 1T1(R290) 整 -E1(SY) CJ 模块板 QD- 8-10kW 3ph: 11222543000122 33161FH420D7KZAAC6R290-10- 1(SY) Refrigerant system CJ 模块板 QD- 12-16kW 3ph: 33161FH650D7VZAAC6R290-16- 11222543000123 1(SY) CJ 模块板 QD- 8-10kW 1ph: 11222543000127 12201FH420D7KZAAC6-R290- 1(SY) CJ 模块板...
  • Page 68 D7(J7) Error logic: ● Error appear：EPROM hardware or software abnormal, then will appear error Check step: Related parts: NAME CODE PICTURE MODEL CJ 控制板 RSW-BP-DC4- 4-6kW: 11222542000175 1T1(R290) 整 -E1(SY) CJ 模块板 QD- 8-10kW 3ph: 11222543000122 33161FH420D7KZAAC6R290-10- 1(SY) Refrigerant system CJ 模块板...
  • Page 69 98 Error logic: ● Error appear：After the pump stop running, if the FLS still connect ≥ 5s ● Error disappear：FLS is back to normal Check step: Example: Related parts: NAME CODE PICTURE OPERATING VOLTAGE (V) Cooling fan 16430046000001 DC 7~13.2...

  • Page 70: Appendix

    Appendix Temperature sensor resistance meter 15kΩ Temp(℃ ) R(Ω) Temp(℃ ) R(Ω) Temp(℃ ) R(Ω) Temp(℃ ) R(Ω) Temp(℃ ) R(Ω) 146735 34608 10202 3590 1457 138447 32957 9786 3464 1412 130677 31394 9389 3343 1369 123390 29914 9011 3227 1328 116554 28512...
  • Page 71 50kΩ Temp(℃ ) R(Ω) Temp(℃ ) R(Ω) Temp(℃ ) R(Ω) Temp(℃ ) R(Ω) Temp(℃ ) R(Ω) 477969 114677 34032 11893 4728 451300 109256 32645 11469 4579 426282 104121 31322 11062 4436 402803 99256 30059 10672 4297 380760 94644 28853 10297 4163 360057 90272...

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