auratsu AHA-06RA1 Technical & Service Manual

R32 split - air to water heat pump

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R32

Split - Air to Water Heat Pump

Technical & Service Manual

Capacity

6 kW

8 kW

10 kW

12 kW

14 kW

16 kW

Version 5

2023-02-10

R32

Split

Air to Water Heat Pump

ODU models

AHA-06RA1

AHA-08RA1

AHA-10RA1

AHA-12RA3

AHA-14RA3

AHA-16RA3

Hydraulic box models

AHM-60RA1

AHM-100RA3

AHM-160RA3

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Summary of Contents for auratsu AHA-06RA1

Page 1 Split - Air to Water Heat Pump Technical & Service Manual Split Air to Water Heat Pump Capacity ODU models Hydraulic box models 6 kW AHA-06RA1 AHM-60RA1 8 kW AHA-08RA1 AHM-100RA3 10 kW AHA-10RA1 AHM-100RA3 12 kW AHA-12RA3 AHM-160RA3 14 kW...
Page 2: Table Of Contents
Split - Air to Water Heat Pump Contents Part 1 General information ................3 Part 2 Features ....................7 Part 3 Piping System ..................8 Part 4 Dimension ..................19 Part 5 Electrical Principle Diagram ............. 21 Part 6 Capacity Amendment ................ 24 Part 7 Hydraulic Performance ..............
Page 3: Part 1 General Information
Split - Air to Water Heat Pump Part 1 General information 1. Nomenclature Outdoor Unit NOTE: 1) A: Auratsu 2) H: Heat pump 3) A: outdoor unit 4-5) Capacity: 06:6kW; 08:8kW; 10:10kW; 12:12kW; 14:14kW; 16:16kW 6) R: R32 7) A: version 8) Power supply：1：220V-240V-1N~50Hz；3：380V-415V-3N~50Hz...
Page 4 Split - Air to Water Heat Pump 2. Unit appearance Outdoor unit Hydraulic box Capacity Appearance Model Model Appearance AHA-06RA1 AHM-60RA1 AHA-08RA1 AHM-100RA3 AHA-10RA1 AHM-100RA3 10kW AHA-12RA3 AHM-160RA3 12kW AHA-14RA3 AHM-160RA3 14kW AHA-16RA3 AHM-160RA3 16kW 3. Product line Capacity Outdoor unit models...
Page 5 Split - Air to Water Heat Pump 4. Selection and System Design 4.1 Selection procedure Step 1 Total heat load calculation Calculate conditioned surface area Select the heat emitters (type, quantity, water temperature and heat load) Step 2 System configuration Decide whether to include AHS (auxiliary heat source) and set AHS switching temperature Decide whether backup electric heater is enabled or disabled Step3Selection of outdoor units...
Page 6 Split - Air to Water Heat Pump 4.2 Leaving Water Temperature (LWT) Selection The recommended design LWT ranges for different types of heat emitter are ➢ For floor heating: 30 to 35℃ ➢ For fan coil units: 30 to 45℃ ➢...
Page 7: Part 2 Features
Split - Air to Water Heat Pump Part 2 Features 1. Heating + Cooling + Domestic hot water 2. DC INVERTER Technology, High Energy Efficient Full DC INVERTER system, INVERTER compressor + DC external fan + INVERTER water pump. Leading in the energy efficiency industry, the highest SCOP=5.2(A+++), far exceeding the EU energy efficiency standard by 14.4% 3.
Page 8: Part 3 Piping System
Split - Air to Water Heat Pump Part 3 Piping System 1. Piping diagram 1.1 Outdoor Unit 1.2 Hydraulic box Pressure gauge Plate heat exchanger(PHE) Gas pipe Temp.sensor Expansion tank Inverter water pump Liquid pipe Temp.sensor PHE outlet Temp.sensor E-heater PHE inlet Temp.senso Discharge valve Flow switch...
Page 9 Split - Air to Water Heat Pump 1.3 A-Thermal system Tsolar Solar panel temperature Flow switch Domestic hot water tank temperature(DHW) Wired controller Indoor temperature Indoor unit Twt_BT Buffer tank temperature Plate heat exchanger Twi_UFH Under floor heating inlet water temperature DHW tank Internal water pump Solar panel...
Page 10 Split - Air to Water Heat Pump provide additional heating capacity for user during extremely cold weather when the heat pump capacity is insufficient. 2. System Configurations R32 Split Type Air Source heat pump unit can be configured to run with the electric heater either enabled or disabled and can also be used in conjunction with an auxiliary heat source such as a boiler.
Page 11 Split - Air to Water Heat Pump 3. Typical Applications 3.1 Space Heating Only The room thermostat is used as a switch. When there is a heating request from the room thermostat, the unit operates to achieve the target water temperature set on the Wired controller. When the room temperature reaches the thermostats set temperature, the unit stops.
Page 12 Split - Air to Water Heat Pump 3.2 Space Heating and Domestic Hot Water The room thermostats also can connect to a motorized valve. Each rooms temperature is regulated by the motorized valve on its water circuit. Domestic hot water is supplied from the domestic hot water tank connected to the hydraulic box.
Page 13 Split - Air to Water Heat Pump 3.3 Space Heating, Space Cooling and Domestic Hot Water Floor heating loops & Heating radiator & Fan coil units are used for space heating , fan coil units are used for space cooling. Domestic hot water is supplied from the domestic hot water tank connected to the hydraulic box. The unit switches to heating or cooling mode according to the temperature detected by the room thermostat.
Page 14 Split - Air to Water Heat Pump 3.4 Space Heating and Space Cooling Floor heating loops & Heating radiator & fan coil units are used for space heating , fan coil units are used for space cooling. In space cooling mode, the 2way valve is closed to prevent cold water entering the floor heating loops &...
Page 15 Split - Air to Water Heat Pump 3.5 Auxiliary heat source provides space heating only Users can also use only gas water heaters for heating REMARK Outdoor unit Mixing valve and mixing water pump hydraulic box Distributor Plate heater exchange Distributor Backup electric heater(optional) Bypass valve...
Page 16 Split - Air to Water Heat Pump 3.6 Space Heating Through Floor Heating Loops and Fan Coil Units The floor heating loops and fan coil units require different operating water temperatures. To achieve these two set points, a mixing station is required. Room thermostats for each zone are optional. The outlet water temperature of the unit is set to the water temperature required by the fan coil unit, and the mixing valve and mixing pump are set to reduce the inlet water temperature of the floor heating Figure 3.6: Space heating through floor heating loops and fan coil units...
Page 17 Split - Air to Water Heat Pump 3.7 Space Heating, Space Cooling and Domestic Hot Water Compatible with Solar Water Heater Floor heating loops & Heating Radiator &fan coil units are used for space heating, and fan coil units are used for space cooling.
Page 18 Split - Air to Water Heat Pump 3.8 Space Heating with heat pump and AHS, space cooling with heat pump and solar for hot water When the heating insufficient, the gas boiler (AHS) is used as an additional heat source, and floor heating or fan coils or low temperature radiators are used for space heating (also can be used in combination with various types of terminals), The fan coil is used for space cooling.
Page 19: Part 4 Dimension
Split - Air to Water Heat Pump Part 4 Dimension 1. Outdoor Unit AHA-06RA1 (982) (632) 8kW, 10kW AHA-08RA1; AHA-10RA1...
Page 20 Split - Air to Water Heat Pump 12kW, 14kW, 16kW AHA-12RA3; AHA-14RA3; AHA-16RA3； 2. Hydraulic box AHM-60RA1; AHM-100RA3; AHM-160RA3...
Page 21: Part 5 Electrical Principle Diagram
Split - Air to Water Heat Pump Part 5 Electrical Principle Diagram 1. Outdoor Unit (AHA-06RA1) 8kW (AHA-08RA1), 10kW (AHA-10RA1)
Page 22 Split - Air to Water Heat Pump 12kW (AHA-12RA3), 14kW (AHA-14RA3), 16kW (AHA-16RA3)
Page 23 Split - Air Source Heat Pump 2. Hydraulic box AHM-60RA1, AHM-100RA3, AHM-160RA3...
Page 24: Part 6 Capacity Amendment
Split - Air Source Heat Pump Part 6 Capacity Amendment 1. Operating Limits 1.1 Heating operating limits 1.2 Cooling operating limits...
Page 25 Split - Air Source Heat Pump 1.3 Domestic hot water operating limits Abbreviations: T4:Outdoor temperature(℃) T1:Leaving water temperature(℃) / watertank temperature(℃) Notes: If the auxiliary electric heating/auxiliary heat source is set to be valid, only the auxiliary electric heating/auxiliary heat source is running; if the auxiliary electric heating/auxiliary heat source is set to be invalid, only the heat pump is running The rise or fall of water temperature is regulated by the water system(Use water tank electric heating to raise to desired temperature).
Page 26: Part 7 Hydraulic Performance
Split Type - Air to water Heat Pump Part 7 Hydraulic Performance AHM-60RA1 AHM-100RA3 AHM-160RA3...
Page 27: Part 8 Sound Levels
Split Type - Air to water Heat Pump Part 8 Sound Levels 1. Outdoor unit sound pressure levels Outdoor unit sound pressure level measurement(unit:mm) ODU Models dB(A) AHA-06RA1 AHA-08RA1 AHA-10RA1 AHA-12RA3 AHA-14RA3 AHA-16RA3 Notes 1.Sound pressure level is measured at a position1m in front of the unit and (1+H)/2m (where H is the height of the unit)above the floor in a semi an-echoic chamber.During actual operation,sound pressure levels may...
Page 28 Split Type - Air to water Heat Pump 2. ODU Octave band levels AHA-06RA1 AHA-08RA1...
Page 29 Split Type - Air to water Heat Pump AHA-10RA1 AHA-12RA3 AHA-14RA3...
Page 30 Split Type - Air to water Heat Pump AHA-16RA3 3. Indoor unit sound pressure levels Indoor unit sound pressure level measurement(unit:mm) ODU Models dB(A) AHM-60RA1 AHM-100RA3 AHM-160RA3...
Page 31 Split Type - Air to water Heat Pump Notes 1.Sound pressure level is measured at a position1m in front of the unit and H/2 (where H is the height of the unit)at the bottom of the unit in a semi an-echoic chamber. During actual operation, sound pressure levels may be higher as a result of ambient noise.
Page 32: Part 9 Wired Controller
Split Type - Air to water Heat Pump Part 9 Wired Controller 1. Introduction During installation, the parameter settings should be configured by the installer to suit the installation configuration, climate conditions and user preferences. The relevant settings are accessible and programmable through the FOR SERVICEMAN menu on the wired controller.
Page 33 Split Type - Air to water Heat Pump Illustration： zone division 1# zone： Name icon Name icon date Monday 00:00-00:00 time Tuesday 00:00 screen lock Wednesday schedule Thursday time appointment Friday WIFI distribution network Saturday successfully morning Sunday WIFI distribution afternoon network failed 2# zone：...
Page 34 Split Type - Air to water Heat Pump Automatic water AUTO fan coil unit temperature water temperature 38(setting) Electric tube heat heat sink source floor preheating floor drying heat sink emergency Indoor temp 3# zone： Name icon Name icon temperature unit antifreeze temperature hold defrost...
Page 35: Part 10 Control
Split Type - Air to water Heat Pump Part 10 Control 1. Control way (Cooling mode and heating mode) 1.1 Outlet water temperature control By measure the outlet water temperature to control heat pump turn on or turn off: 1) cooling mode : ①...
Page 36 Split Type - Air to water Heat Pump ⑤ When room temperature is higher than Tset + dTSC_ON, heat pump will turn on 2) Heating mode: ① When room temperature is higher than Tset +1℃，target water temperature is drop to reach room temperature;...
Page 37 Split Type - Air to water Heat Pump switch to DHW mode, and the DHW mode will keep running until the water tank temperature reaching the water tank set target temperature or the maximum time (t_DHWHP_MAX), then switch to the AC (cooling mode/heating mode) operation。...
Page 38 Split Type - Air to water Heat Pump the pump, the pump will start running, and when the running duration reaches the DHW PUMP RUN TIME, the pump will turn off. 2.6 DHW mode operation The unit can heat water by controlling the operation of the compressor and the water tank electric heating (TBH).
Page 39 Split Type - Air to water Heat Pump 3.3 Cooling stop-operating temperature difference (dTSC_OFF)、cooling start-operating temperature difference (dTSC_ON) In cooling mode, when the outlet water temperature of Hydraulic box reaches (Tset – dTSC_OFF), the heat pump is stopped and only the water pump is turned on; When it is detected that the outlet water temperature of Hydraulic box reaches (Tset + dTSC_ON), the heat pump is turned on for cooling operation 4.
Page 40 Split Type - Air to water Heat Pump 5. Heating mode 5.1 Whether heating mode is enabled (heat MODE) Set whether to enable the heating mode through the wired controller. When enabled, the unit operates in the heating mode. When it is not enabled, the unit can not operate heating function. If both the heating mode and the cooling mode are set to be disabled, the figure as shown below：...
Page 41 Split Type - Air to water Heat Pump 5.4 Delay time of Hydraulic box electric heating start after compressor start (t_IBH_DELAY)、 Ambient temperature that allows Hydraulic box electric heating to start (Tao_IBH_ON) Set Delay time of Hydraulic box electric heating start after compressor start (t_IBH_DELAY) by Wired controller，...
Page 42 Split Type - Air to water Heat Pump Note: a）In automatic cooling mode, MODBUS allow setting range: 5~25℃ b）In automatic heating mode, MODBUS allow setting range: 25~65℃ 7. Disinfect Set whether the water tank disinfection is enabled or not by the wire controller. When it is set to enable, after reaching the set opening time, the unit automatically turns on the water tank disinfection function, and runs according to the set disinfection water temperature and disinfection time.
Page 43 Split Type - Air to water Heat Pump temperature When the user selects the heating mode, there are high water temperature curves and low water temperature curves. If the terminal type selected by the user is only floor heating (FLH), the low water temperature curve of the heating mode will be run, as shown in the figure below.：...
Page 44 Split Type - Air to water Heat Pump When the user selects the cooling mode, if there is only fan coil (FCU) in the selected terminal type, the low water temperature curve of the cooling mode will be run, as shown in the figure below.： Note：...
Page 45 Split Type - Air to water Heat Pump water temperature curve。 Note: Automatic water temperature allowable setting range: Type1~Type9, after automatic water temperature is set, the ECO cannot be set. 11. Mute function After entering the mute function, according to the selected mute level, limit the maximum operating frequency of the compressor of the outdoor unit and the maximum speed of the fan to achieve mute function。...
Page 46 Split Type - Air to water Heat Pump 15. Floor drying The floor drying function is divided into 3 operation cycles: heating cycle, holding cycle and cooling cycle. Each cycle is divided into different stages according to the settings.。 During the heating cycle, the heat pump calculates the target outlet water temperature at each stage according to the outlet water temperature T0, the maximum floor drying water temperature T_DRYPEAK, and the heating cycle duration t_DRYUP.
Page 47 Split Type - Air to water Heat Pump 18. Automatic exhaust function of water system After the installation of the water system and the completion of adding water, the automatic exhaust function of the water system can be used to drain the water in the system.。 After entering the automatic exhaust function of the water system, the pump runs for 5 minutes and stops for 1 minute as a cycle.。...
Page 48 Split Type - Air to water Heat Pump Minimum outdoor ambient ℃ -5~25 Tao_CMIN temperature of cooling mode Maximum outdoor ambient ℃ 20~35 Tao_HMAX temperature of heating mode Minimum outdoor ambient ℃ -25~15 Tao_HMIN temperature of heating mode Automatic water temperature 1 of heating mode ℃...
Page 49 Split Type - Air to water Heat Pump displays and wired controller. 2)The system stops when the set temperature has been reached,the compressor stop and the water pump will stop after 150 seconds. 22. Crankcase Heater Control When the power supply is connected (ON), the following two conditions are used for control: 1)When compressor is ON: When T exhaust ≤55(°...
Page 50 Split Type - Air to water Heat Pump temperature 4-WAY ● Four-way valve 27. Startup Control for Cooling Operation Component Wiring diagram label 6-16kW Control functions and states COMP ● According to the compressor startup control Inverter compressor DC fan motor ●...
Page 51 Split Type - Air to water Heat Pump 33. Outdoor Fan Control Fan speed (rpm) Fan speed index 8-10Kw 12-16Kw 34. High Pressure Protection Control Pd > 4.5MPa, indicating high pressure protection H1 Pd < 3.5MPa, the fault is recovered High pressure protection occurs for three consecutive times, and the fault is locked.
Page 52 Split Type - Air to water Heat Pump When the voltage of AC power supply is at or above 265V for more than 30 seconds, the system displays 3J protection and the unit stops running. When the phase voltage drops below 265V for more than 30 seconds, the refrigerant system restarts once the compressor re-start delay has elapsed.
Page 53 Split Type - Air to water Heat Pump Component Wiring diagram label 6-16kW Control functions and states ● Inverter compressor COMP According to the compressor startup control ● DC fan motor ● Electronic expansion valve 480pls ● Four-way valve 4-WAY 43.
Page 54: Part 11 Pcb Instruction
Split Type - Air to water Heat Pump Part 11 PCB Instruction 1. ODU electrical control box AHA-06RA1: AHA-08RA1; AHA-10RA1:...
Page 55 Split Type - Air to water Heat Pump AHA-12RA3; AHA-14RA3; AHA-16RA3: 2. ODU control PCB 2.1 6kW (AHA-06RA1) 11222542000150 Main PCB CJ 控制板 RSW-BP-DC4-2P-R32-E1(SY...
Page 56 Split Type - Air to water Heat Pump Num. Remark Num. Remark Reactor Fan motor Communication line between indoor unit and out door Compressor line UVW unit High pressure sensor Four-way valve Electronic expansion valve Chassis electric heating Temperature Sensor Power supply High switch Ground lead...
Page 57 Split Type - Air to water Heat Pump 11222542000146 Main PCB CJ 控制板 RSW-BP-DC45P 热泵-E1(SY) Num. Remark Num. Remark High pressure pressure sensor Low pressure switch Temperature Sensor Four-way valve Internal and external communication Oil temperature heating Electronic expansion valve chassis heating reserved Main PCB power supply...
Page 58 Split Type - Air to water Heat Pump 2.3 12-16kW (AHA-12RA3, AHA-14RA3, AHA-16RA3) 11222543000074 Fan drive PCB Num. Remark Num. Remark Filter board and fan driver PCB Communication between the main PCB and the fan power cable driver PCB 11222548000006 Filter PCB Num.
Page 59 Split Type - Air to water Heat Pump 11222543000073 Compressor drive PCB ： Num. Remark Num. Remark Reactor Insert,L3/L2/L1; Reactor Insert, L3/L2/L1;red/green/yellow from left to red/green/yellow from top to bottom right Filter- Compressor drive 3 PHASE power Reactor reserved wire ,T/S/R ,red/green/yellow from left to right Main PCB- Compressor drive Filter- Compressor drive LN power wire...
Page 60 Split Type - Air to water Heat Pump 11222542000146 Main PCB Num. Remark Num. Remark High pressure pressure sensor Low pressure switch Temperature Sensor Four-way valve Internal and external communication Oil temperature heating Electronic expansion valve chassis heating 4G module (reserved) Main PCB power supply High pressure switch Main PCB and fan driver communication...
Page 61 Split Type - Air to water Heat Pump 3. Hydraulic box electrical control box AHM-60RA1 Num. Remark Num. Remark Power supply terminal Extended PCB Power supply relay Main PCB Electric heating relay Communication terminal Electric heater thermal protector Load wiring terminal (manual recovery) Electric heater thermal protector (automatic recovery)
Page 62 Split Type - Air to water Heat Pump AHM-100RA3; AHM-160RA3 Num. Remark Num. Remark Electric heater thermal protector Power supply terminal (automatic recovery) Power supply relay Expansion PCB Electric heating relay (3kW) Main PCB Electric heating relay (6kW) Communication terminal Electric heater thermal protector Load wiring terminal (manual recovery)
Page 63 Split Type - Air to water Heat Pump 4. Hydraulic box control PCB 5. AHM-60RA1; AHM-100RA3; AHM-160RA3 Code：11222542000147 Main PCB Num. Abbreviation Remark Num. Abbreviation Remark Electric heating protection ground wire switch Inverter water pump power low voltage switch for AFLP wire Antifreeze...
Page 64 Split Type - Air to water Heat Pump Code：11329021001050 expansion board Num. Remark Num. Remark live wire Defrost signal Neutral wire compressor signal Three-way valve Electric heating solar water pump solar switch Floor heating mixing water pump Communicate with the water module Additional heat Note: If heat pump is connected smart grid, after open smart grid function when first power on, detect the first 10s of the smart grid signal, the data may not be read in time, please wait for the data update.
Page 65: Part 12 Trouble Shooting
Split Type - Air to water Heat Pump Part 12 Trouble Shooting 1. ODU Error Code Table CODE Fault code description Environment temperature sensor Tao fault Defrost temperature sensor T-def fault Discharge temperature sensor failure Suction temperature of compressor failure Communication error between ODU and IDU The communication between main PCB and compressor drive module failure The communication between main PCB and DC fan motor drive module failure...
Page 66 Split Type - Air to water Heat Pump 3. Failure analysis 3.1 【C1】【C2】【C3】【C6】Temperature sensor fault troubleshooting Description 3.1.1 ⚫ C1 indicates an ambient temperature sensor error ⚫ C2 indicates a defrost temperature sensor error ⚫ C3 indicates a discharge temperature sensor error ⚫...
Page 67 Split Type - Air to water Heat Pump 3.2 【J2】【J3】【J4】Communication fault troubleshooting Description 3.2.1 ⚫ J2 indicates a communication error between ODU and IDU J3 indicates a communication error between main PCB and compressor drive module error ⚫ ⚫ J4 indicates a communication error between main PCB and DC fan motor drive module error Error logic 3.2.2 ⚫...
Page 68 Split Type - Air to water Heat Pump 【J3】The communication between main PCB and compressor drive module failure 【J4】The communication between main PCB and DC fan motor drive module failure J3/J4 Whether the connection plug is Ensure the plug is connected loose or not properly Whether the compressor drive...
Page 69 Split Type - Air to water Heat Pump times within 1h, it is necessary to repower to clean the error Procedure 3.3.3 【H1】 High pressure Switch Protection High pressure switch connection or pressure sensor Ensure the switch is connected connection on refrigerant properly system main PCB is loose Pressure sensor has...
Page 70 Split Type - Air to water Heat Pump 【H4】 Low pressure switch protection Insufficient refrigerant caused by Add refrigerant or inspect the refrigerant leakage system for leaks The low pressure side is blocked, caused by crushed Replace the pressure sensor or bent pipe, blocked EXV, or dirty filter The high pressure side is...
Page 71 Split Type - Air to water Heat Pump 3.4 【E3】【FH】Temperature abnormal fault Description 3.4.1 ⚫ E3 indicates compressor discharge temperature【Tda】is too high to stop the protection ⚫ FN indicates compressor discharge temperature【Tda】is too low to stop the protection Error logic 3.4.2 ⚫...
Page 72 Split Type - Air to water Heat Pump 【FH】 Compressor discharge superheat too low shutdown protection Adjust the temperature sensor Whether high pressure sensor and pressure sensor and discharge temperature (reconnect, replace a new sensor is faulty or loose sensor, etc.) Condenser ，EXV was blocked Check system and troubleshoot/replace...
Page 73 Split Type - Air to water Heat Pump 3.5 【E1】【F1】【F3】ODU component fault Description 3.5.1 ⚫ E1 indicates a four-way valve error F1 indicates a high pressure sensor “Pd” error ⚫ ⚫ F3 indicates compressor discharge pressure is too high to stop the protection Error logic 3.5.2 ⚫...
Page 74 Split Type - Air to water Heat Pump 【F1】 High pressure sensor “Pd” failure Whether the high pressure sensor connection on Ensure the sensor is connected refrigerant system main PCB properly is loose High pressure sensor has Replace the sensor short-circuited or failed Replace main PCB...
Page 75 Split Type - Air to water Heat Pump 【F3】 High pressure sensor “Pd” failure Check whether the high Adjust the high pressure sensor pressure sensor is abnormal normal operation (reconnect, (poor contact, short-circuited, replace a new sensor, etc.) failure, etc.) The high pressure side is Check system and blocked, caused by crushed...
Page 76 Split Type - Air to water Heat Pump 31/32/33/35/36/37 /39/3E/3F Whether the compressor runs The refrigerant system may be when a fault occurs faulty, refer to the next table The electrical control may be faulty, test whether unstable Ensure that the power cable is voltage input, whether securely connected and the connection wire loose, poor...
Page 77 Split Type - Air to water Heat Pump 31/32/33/35/36/37 /39/3E/3F Whether the compressor is not The electrical control may be started faulty, refer to the last table The refrigerant system may be faulty, check whether the heat Clean the heat exchanger or exchanger is dirty and replace the fan motor blocked and whether the fan...
Page 78 Split Type - Air to water Heat Pump 3.7 【3H】Fan drive module start up failure Error logic 3.7.1 ⚫ When the drive module PCB temperature, current, voltage too high over than the protection value or fan motor abnormal cause high current will stop run, appear 3H error Procedure 3.7.2 Whether unstable voltage input,...
Page 79 Split Type - Air to water Heat Pump 3.8 【J5】Outdoor unit parameter setting incorrect Error logic 3.8.1 ⚫ When main PCB DIP switch be set incorrect, then will appear error Procedure 3.8.2 Whether the PCB DIP switch is Adjust the dip switch correctly inconsistent with that of the against the instructions corresponding model...
Page 80 Split Type - Air to water Heat Pump 3.10 【93】【94】【95】【96】【A3】【A4】【7E】【7F】 IDU Temperature sensor fault troubleshooting 3.10.1 Description ⚫ 93 indicates a final outlet water temperature sensor error 94 indicates an inlet water temperature sensor error ⚫...
Page 81 Split Type - Air to water Heat Pump 3.11 【AA】【A9】【7D】IDU Communication fault troubleshooting 3.11.1 Description ⚫ AA indicates a communication error between controller and IDU A9 indicates a communication error between ODU and IDU ⚫ ⚫ 7D indicates a communication error between main PCB and expansion board 3.11.2 Error logic ⚫...
Page 82 Split Type - Air to water Heat Pump 【A9】 Communication fault between ODU and IDU Whether both IDU and ODU are Power on IDU&ODU powered off Communication wires is Reconnection communication improperly connected (A-A, wires B-B) or loose connected Replace main PCB 【7D】...
Page 83 Split Type - Air to water Heat Pump 3.12 【A7】【98】Flow switch protection 3.12.1 Description ⚫ AA indicates a communication error between controller and IDU A9 indicates a communication error between ODU and IDU ⚫ 3.12.2 Error logic ⚫ The flow switch protection connection port be disconnected ≥20s after turn on the unit or the port be disconnected ≥5s during the system running, error code A7 is displayed ⚫...
Page 84 Split Type - Air to water Heat Pump 【98】 Early closing fault of water flow switch Whether the water pump is not Turn off the water pump turned off Whether Port FLS be short Reconnect the water flow switch connected Replace main PCB or FLS...
Page 85 Split Type - Air to water Heat Pump 3.13 【A5】Water pump fault 3.13.1 Error logic ⚫ When port PUMP-C detect feedback running rate not same as the target running rate, will appear A5 error 3.13.2 Procedure Whether the water stop valve is Open the water stop valve not opened Reconnect the power and signal...
Page 86 Split Type - Air to water Heat Pump 3.14 【97】Anti-freezing low pressure switch (AFLP) protection 3.14.1 Error logic ⚫ The AFLP port be disconnected ≥3s after turn on the cooling mode 3 minutes, error code 97 is displayed (When LPS detect the refrigerant pressure ≤ 0.45 Mpa , LPS will send disconnected signal to port AFLP) 3.14.2 Procedure Short connect the AFLP port,...
Page 87 Split Type - Air to water Heat Pump 3.15 【AF】Electric heating overheat protection 3.15.1 Error logic ⚫ When Port : PRT-SW be disconnected，then will appear error code AF 3.15.2 Procedure Whether the port PRT-SW not Reconnect the PRT-SW connected or connect not firm Whether the filter is dirty and Clean the filter blocked cause low water flow...
Page 88 Split Type - Air to water Heat Pump 3.16 【A8】EE fault 3.16.1 Error logic ⚫ EPROM hardware or software abnormal, then will appear error 3.16.2 Procedure Replace main PCB...
Page 89 Split Type - Air to water Heat Pump...

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Ahm-60ra1 Aha-08ra1 Ahm-100ra3 Aha-10ra1 Aha-12ra3 Ahm-160ra3 ... Show all