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Idea ISW-10 SF1-DN1, Installation Manual

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CONTENT 

I

 OVERVIEW .................................................................................................................................................................................................. - 4 -

 

1.1 TYPE & MODEL ........................................................................................................................................................................................................... - 4 - 
1.2 COMPONENTS ............................................................................................................................................................................................................ - 4 - 
1.3 SCHEMATIC DIAGRAM OF SYSTEMS ........................................................................................................................................................................... - 5 - 
1.4 COOLING OPERATION ................................................................................................................................................................................................. - 5 - 
1.5 HEATING OPERATION ................................................................................................................................................................................................. - 6 - 
1.6 DEFROST OPERATION ................................................................................................................................................................................................. - 6 - 
1.7 PERFORMANCE PARAMETERS .................................................................................................................................................................................... - 6 - 
1.8    ENVIRONMENTAL REQUIREMENTS ......................................................................................................................................................................... - 8 - 

II

 INSTALLATION .......................................................................................................................................................................................... - 9 -

 

2.1 TRANSPORTATION & HANDLING ................................................................................................................................................................................ - 9 - 
2.2 UNPACKING .............................................................................................................................................................................................................. - 11 - 
2.3 INSPECTION .............................................................................................................................................................................................................. - 11 - 
2.4 SAFETY RULES ........................................................................................................................................................................................................... - 11 - 
2.5 SAFETY PRECAUTIONS .............................................................................................................................................................................................. - 11 - 
2.6 SELECTION OF INSTALLATION SITES.......................................................................................................................................................................... - 12 - 
2.7 THE ARRANGEMENT SPACING OF THE UNITS ........................................................................................................................................................... - 13 - 
2.8 SYSTEM INSTALLATION LAYOUT ............................................................................................................................................................................... - 14 - 
2.9 MINIMUM CAPACITY OF THE WATER SYSTEM ......................................................................................................................................................... - 19 - 
2.10 UNIT INSTALLATION ............................................................................................................................................................................................... - 22 - 
2.11 MAINTENANCE SPACE REQUIREMENTS .................................................................................................................................................................. - 23 - 
2.12 INSTALLATION STEPS .............................................................................................................................................................................................. - 23 - 
2.13 INSTALL UNIT PIPE .................................................................................................................................................................................................. - 23 - 
2.14 INSPECTION ITEMS AFTER MECHANICAL INSTALLATION IS COMPLETED ................................................................................................................ - 23 - 

III

 ELECTRICAL INSTALLATION .................................................................................................................................................................- 24 -

 

3.1 TASK INTRODUCTION AND PRECAUTIONS ................................................................................................................................................................ - 24 - 
3.2 POWER SOURCE ....................................................................................................................................................................................................... - 24 - 
3.3 UNIT WIRING REQUIREMENTS ................................................................................................................................................................................. - 28 - 
3.4 PAY ATTENTION TO INSTALLATION INSPECTION ...................................................................................................................................................... - 28 - 

IV

 SYSTEM TRIAL OPERATION ...................................................................................................................................................................- 30 -

 

4.1 PRECAUTIONS BEFORE TRIAL OPERATION ................................................................................................................................................................ - 30 - 
4.2 INSPECTION ITEMS AFTER INSTALLATION ................................................................................................................................................................ - 30 - 
4.3 TRIAL OPERATION ..................................................................................................................................................................................................... - 31 - 

V

 CONTROLLER OPERATION INSTRUCTIONS ...........................................................................................................................................- 32 -

 

5.1 OVER VIEW ............................................................................................................................................................................................................... - 32 - 
5.2 THE BASIC MODEL OF SYSTEM BLOCK DIAGRAM CONTROL ..................................................................................................................................... - 32 - 
5.3 REMOTE CONTROLLER ............................................................................................................................................................................................. - 32 - 
5.4 FAULT CODE/ SYSTEM PROTECTION ......................................................................................................................................................................... - 46 - 
5.5. WIFI CONTROL FUNCTION ....................................................................................................................................................................................... - 52 - 

Ⅵ

    SYSTEM OPERATION AND MAINTENANCE .........................................................................................................................................- 57 -

 

6.1 SYSTEM DIAGNOSTIC TEST ....................................................................................................................................................................................... - 57 - 
6.2 CREANING SYSTEM ................................................................................................................................................................................................... - 58 - 

VI

 FAULT DIAGNOSE AND TREATMENT .....................................................................................................................................................- 60 -

 

 

Summary of Contents for ISW-10 SF1-DN1

Page 1: ...1 INTELLIGENCE INVERTER SPLIT HEAT PUMP INSTALLATION MANUAL MODEL ISW 10 15 18 24 32 SF1 DN1 outdoors ISW 10 15 18 24 32 SF1 SPM indoors ...

Page 2: ...vice life At the same time correct installation use and maintenance will reduce the failure rate of your hot water unit and increase its service life If not in use for a long time in winter be sure to empty the water in the system to avoid freezing crack We are always committed to technical improvement Our company reserves the right to modify this technical manual without prior notice Please keep ...

Page 3: ...IREMENTS 23 2 12 INSTALLATION STEPS 23 2 13 INSTALL UNIT PIPE 23 2 14 INSPECTION ITEMS AFTER MECHANICAL INSTALLATION IS COMPLETED 23 III ELECTRICAL INSTALLATION 24 3 1 TASK INTRODUCTION AND PRECAUTIONS 24 3 2 POWER SOURCE 24 3 3 UNIT WIRING REQUIREMENTS 28 3 4 PAY ATTENTION TO INSTALLATION INSPECTION 28 IV SYSTEM TRIAL OPERATION 30 4 1 PRECAUTIONS BEFORE TRIAL OPERATION 30 4 2 INSPECTION ITEMS AFT...

Page 4: ...xchangers etc 1 2 1 COMPRESSOR Using high efficiency scroll compressors some models of it with EVI function low vibration low noise and high reliability 1 2 2 FINNED TUBE HEAT EXCHANGERS Using finned tube heat exchanger with high heat dissipation efficiency Design and verification of the distributor for specific models to ensure uniformity of refrigerant distribution in each circuit greatly improv...

Page 5: ...ands in volume after throttling and the state changes to become a low temperature low pressure liquid refrigerant and a part of the gaseous refrigerant 3 The gas liquid mixture of the refrigerant flows into the evaporator water side heat exchanger through the pipeline and the refrigerant expands and evaporates in the heat exchanger absorbs heat in the water evaporates and absorbs heat to become ga...

Page 6: ...he heating mode in a low ambient temperature the air side heat exchanger may frost which will affect the heating effect so defrosting is required 2 The defrost controller performs long term monitoring by combining the air side coil temperature and the timer to determine whether defrosting is required 3 The unit changes the heating operation to the cooling operation through the four way reversing v...

Page 7: ... kg 96 106 127 137 142 156 220 232 263 275 Diameter of water connector mm DN25 DN25 DN32 DN32 DN32 Cabinet material plate Galvanized steel Spray Gray Machin e size Outdoor unit W D H 880 420 7 90mm 930 410 1 270mm 1018 450 1 366mm 1155 540 1432m m 1240 540 1 630mm Indoor unit W D H 380 330 6 85mm 380 330 6 85mm 450 330 81 5 550 420 920 550 420 92 0 Compressor Panasonic Rotary EVI DC inverter Mitsu...

Page 8: ...TING IPX4 1 8 2 STORAGE ENVIRONMENT The storage environment requirements of the unit are shown in Table 1 2 ITEM REQUIREMENT STORAGE ENVIRONMENT Indoor clean place no dust etc ENVIRONMENT HUMIDITY 5 85 no condensation AMBIENT TEMPERATURE 30 C 54 C 1 8 3 ANTIFREEZE WARNING When the ambient temperature of the unit is lower than 0 C please ensure that the unit is in the power supply state if the anti...

Page 9: ...excessive bumps when transporting The tilt angle of the unit should be kept within the range of 75 105 when transporting Figure 2 1 105 75 Figure 2 1 The tilt angle of the unit Please use a forklift to carry it If there is no forklift please move it with the help of the cylinder shaped things like crabstick Rolling transport 6 piles with same size are placed under the base of the unit Each roller ...

Page 10: ... 2 3 The strength of the lifting cable should be 3 times larger than the weight of the unit Check and ensure that the lifting hook is fastened to the unit and the lifting angle should be greater than 60 Figure 2 3 Lifting of the unit ...

Page 11: ...ets the requirements as showed 1 8 2 And confirm the whether the building should be modified to match the construction of the pipeline wiring and the ventilation ducts The installation must strictly follow the design drawings and reserve maintenance space Refer to the engineering dimensional drawings provided by the manufacturer 2 5 SAFETY PRECAUTIONS Please entrust professionals with professional...

Page 12: ...he boiler flue or other air environment that will corrode the condensing coil and the metal parts of the unit 3 If the unit is located in a location accessible to unauthorized personnel isolation safety measures such as guardrails should be taken This will prevent sabotage and accidental damage 4 The bearing surface of erecting platform of the unit should be flat can withstand the weight of the un...

Page 13: ... If there are obstacles in front of the air outlet of the unit please make sure that the obstacles are more than 2000 mm from the air outlet If there are sundries around the unit please make sure that the sundries are more than 400 mm from the blow of the unit The unit should not be installed in basements indoors or other confined spaces If the project requires the unit to be installed in such spa...

Page 14: ...C SYSTEM For hot water and floor heating is shown in the figure below For heating cooling is shown in the figure below 2 8 2 INDOOR UNIT AND OUTDOOR UNIT CONNECTION PIPE CONNECTION 1 Use the connection pipe to connect outdoor unit and indoor unit together Optional see pic1 ...

Page 15: ... outdoor unit see pic2 3 pic2 3 3 Drip a few frozen oil onto the copper nut of the connecting pipe and screw it to the stop valve s joint of the indoor unit and the outdoor unit and tighten with a wrench The tightening torque of the copper pipe bolt is about 10kg m see pic4 5 ...

Page 16: ...eedle valve from the outdoor unit s stop 18 valve pic 6 5 Same operation to connect with the indoor units After the leakage detecting and vacuuming are completed then open the stop valve of the indoor unit See Pic7 8 It is necessary to use the hexagonal counterclockwise to ...

Page 17: ... to the connecting pipe when doing leakage detecting 3 Use a hexagon socket to completely unscrew the outdoor unit s stop valve counterclockwise draw a vacuum from the needle valve of the outdoor unit s stop valve Pic 9 Pic 9 7 To ensure that the vacuum is acceptable the pumping time cannot less than 20 minutes Pic10 11 Or the pressure value of the pressure gauge is lower than 0 1MPa ...

Page 18: ...n the stop valve of the outdoor unit See Pic12 12 It is necessary to use the hexagonal counterclockwise to completely open the stop valve of indoor and outdoor unit before starting the operation Let the refrigerant go through the whole system Pic12 13 ...

Page 19: ...wer to start up After connect power supply heat pump delay 3mins to start Check carefully is there is some abnormal noise or vibration or if the working current is normal or if water temp increasing is normal After the unit is working properly for 10 minutes without any problem then the pre start up is usefully completed If not please refer to Service and Maintenance Chapter to solve the problem 2...

Page 20: ...ater the water capacity of the system the better the water capacity is The water capacity is too large and its thermal stability is undoubtedly good However after a long time of shutdown time for pre cooled or warm up of the air conditioner will be extend The water capacity of the system can be calculated as follows V P T C Δt V system minimum large water capacity kg unit 1 kg 1 L P the heat dissi...

Page 21: ... 21 XD 05BSPM ...

Page 22: ...re 2 8 Unit mm 2 10 UNIT INSTALLATION 2 10 1 INSTALLATION SPACE Note As the unit will produce condensate water leakage may will cause damage to other equipment nearby So drainage pipe must be provided during installation ...

Page 23: ...tion position according to the site conditions and user requirements 3 Use nuts spring washers flat washers and bolts to fix the unit on the mounting base 4 During installation it can be slightly inclined to the drainage side to facilitate drainage 5 Install on a firm foundation 2 13 INSTALL UNIT PIPE 1 Please refer to the water system layout drawing for connecting the unit s water system pipeline...

Page 24: ...r and they should not contact the connecting pipe or valve After all wiring is completed carefully check and confirm that it is correct before turning on the power The lines that need to be installed and connected at the site include external power cords controller wires and unit connection wires After the unit is installed you can connect the power cord and connecting wire All wires must be firml...

Page 25: ...ine 4 core 10 meters can be connected and the temperature probe connecting line 6 core 7 meters can be connected The pictures are as follows Model Power source 220V 1N 50H z 380V 3N 50Hz Main switch capacity leakage protection device fuse A 15 15 20 20 20 Power cord size mm2 4 4 6 6 6 Ground wire size mm2 2 5 2 5 4 4 4 ISW 10SF1 ISW 15SF1 ISW 18SF1 ISW 24SF1 ISW 32SF1 ...

Page 26: ...ows 1 Connect the circulate water pump wire to the wiring terminals 1 or 2 of the outdoor machine and the indoor machine as shown in the figure below Outdoor Terminal Indoor Terminal 2 Connect the controller wire to the wire controller wiring terminal of the outdoor machine and the indoor machine as shown in the figure below ...

Page 27: ... the Temperature Probe wiring terminal of the outdoor machine and the indoor machine as shown in the figure below Outdoor Indoor 4 After the above 3 cables are connected connect the power cable to the outdoor machine terminal as shown in the following figure ...

Page 28: ...t 4 All the power connected to the unit must pass a manual switch and ensure that when this switch is turned off the voltage on the circuit node of the unit is all released 5 must use the correct specification of the cable to provide power to the unit The unit should use an independent power supply It is strictly forbidden for the unit to share the same power source with other electrical appliance...

Page 29: ...t in the electrical circuit of the system 3 The power cables and ground cables to the disconnect switch the unit are connected 4 All cables and circuit connectors have been tightened and the fastening screws have not been loosened Note The unit must be reliably grounded After all the above contents are checked and confirmed to be correct you can start debugging ...

Page 30: ...ther the system is fully warmed up more than 12 hours 4 2 INSPECTION ITEMS AFTER INSTALLATION According to this manual check the installation work by referring to the following table Figure 4 1 Inspection items INSPECTION ITEMS DETAILED DESCRIPTION YES NO Whether the installation position meets the requirements Unit is firmly installed and leveled The air flow space of heat exchanger at air side m...

Page 31: ... keys on the operation panel are normal 3 Whether the indicator light is normal 4 Whether the drainage is normal 5 Is the temperature difference between inlet and outlet water normal 4 7 6 Whether vibration and sound are normal during operation 7 Does the wind noise and condensate generated during operation affect the neighbors 8 Whether there is refrigerant leakage Note When restarting after shut...

Page 32: ...n etc The communication distance between the host and the remote controller is not less than 100 meters the communication port adopts 485 communication Strong anti interference stable and reliable performance 5 2 THE BASIC MODEL OF SYSTEM BLOCK DIAGRAM CONTROL SYSTEM BLOCK DIAGRAM Control principle The outdoor host is connected to the command operation of the remote controller The remote controlle...

Page 33: ... fan logo represents low wind and 2 represents high wind 7 When the Wi Fi connection is successful will be on and it will flash when it is not connected or during the connection 8 When the crankshaft electric heating is turned on is displayed and when the chassis electric heating is turned on manually flashes 9 will be displayed when the auxiliary electric heating is automatically turned on 10 is ...

Page 34: ...en powering on in the main interface single press to adjust the current mode setting temperature In the main interface long press the key for 3 seconds to enter the unit status parameter query cooperate with the and keys to browse the parameters and press the key to exit the parameter query System parameters table Code Parameters name Adjustment range Defaults P01 Return temp difference under heat...

Page 35: ...get superheat 8 5 10 5 T 23 A10 Main EEV cooling target superheat 1 5 10 3 T 38 A11 Main EEV cooling target superheat 2 5 10 3 30 38 A12 Main EEV cooling target superheat 3 5 10 3 25 30 A13 Main EEV cooling target superheat 4 5 10 3 T 25 A14 Main EEV heating initial opening 00 0 480 150 Ambient temp T 14 A15 Main EEV heating initial opening 01 0 480 120 9 14 A16 Main EEV heating initial opening 02...

Page 36: ...EEV heating automatic adjustment lower limit 04 0 480 80 10 5 A35 Main EEV heating automatic adjustment lower limit 05 0 480 80 16 10 A36 Main EEV heating automatic adjustment lower limit 06 0 480 80 23 16 A37 Main EEV heating automatic adjustment lower limit 07 0 480 80 T 23 A38 Main EEV exhaust temp adjustment 70 125 95 A39 Main EEV opening under defrost 20 450 450 A40 Main EEV minimum opening u...

Page 37: ...st temp 40 70 60 B11 Auxiliary EEV heating target superheat 1 10 10 4 T 14 B12 Auxiliary EEV heating target superheat 2 10 10 4 9 14 B13 Auxiliary EEV heating target superheat 3 10 10 4 4 9 B14 Auxiliary EEV heating target superheat 4 10 10 4 5 4 B15 Auxiliary EEV heating target superheat 5 10 10 4 10 5 B16 Auxiliary EEV heating target superheat 6 10 10 4 16 10 B17 Auxiliary EEV heating target sup...

Page 38: ...0 B30 Auxiliary EEV hot water initial opening 03 0 480 30 T 10 B31 Auxiliary EEV heating automatic adjustment lower limit 00 0 480 30 Ambient Temp T 14 B32 Auxiliary EEV heating automatic adjustment lower limit 01 0 480 30 9 14 B33 Auxiliary EEV heating automatic adjustment lower limit 02 0 480 30 4 9 B34 Auxiliary EEV heating automatic adjustment lower limit 03 0 480 30 5 4 B35 Auxiliary EEV heat...

Page 39: ... 80 T 10 B45 Enthalpy valve exhaust temperature under heating standby 50 125 75 T 14 B46 Enthalpy valve exhaust temperature under heating standby 50 125 75 9 14 B47 Enthalpy valve exhaust temperature under heating standby 50 125 70 4 9 B48 Enthalpy valve exhaust temperature under heating standby 50 125 70 5 4 B49 Enthalpy valve exhaust temperature under heating standby 50 125 65 10 5 B50 Enthalpy ...

Page 40: ...70 T 38 B58 Enthalpy valve exhaust temperature under hot water standby 50 125 70 30 38 B59 Enthalpy valve exhaust temperature under hot water standby 50 125 65 25 30 B60 Enthalpy valve exhaust temperature under hot water standby 50 125 65 T 25 B61 Enthalpy valve turns on delay 0 180S 10S B62 Auxiliary circuit enable under cooling 0 allow to turn on 1 not allowed 1 B63 Enthalpy valve turns off exha...

Page 41: ...1 Water pump mode 1 non stop 0 stop 0 1 1 it is effective for heating And cooling mode C02 Pressure sensor 1 effective 0 invalid 0 1 0 C03 High pressure protection value 25 0 50 0bar 42 0bar C04 High pressure recovery value 25 0 50 0bar 36 0bar C05 Low pressure protection value 0 20 0bar 0 5bar C06 Low pressure recovery value 0 20 0bar 1 5bar D01 AC wind speed switching ambient temp 10 50 28 D02 A...

Page 42: ... 23 2 D19 DC motor speed regulation cycle 10 180 S 30S D20 Motor adjust speed per cycle 0 100 R 10 R D21 Maximum speed 1 of DC motor under hot water mode 0 1000 T 25 500 D22 Maximum speed 2 of DC motor under hot water mode 0 1000 10 25 700 D23 Maximum speed 3 of DC motor under hot water mode 0 1000 10 10 900 D24 Maximum speed 4 of DC motor under hot water mode 0 1000 T 10 900 D25 Hot water Tw Tp T...

Page 43: ...wering on in the main interface single press to adjust the current mode setting temperature In the main interface long press the key for 3 seconds to enter the unit status parameter query cooperate with the and keys to browse the parameters and press the key to exit the parameter query Machine status table 1 Long press Key for 3 seconds Query code Description Display range 01 Inlet water temp 30 9...

Page 44: ... this time the minute digit flashes indicating that the current time s minute value can be adjusted through the and buttons After setting the minute value press the key again to end Timing setting Long press the button for 3 seconds to enter the timing setting Enter the timing selection At this time the timing on 1 clock hour flashes and the hours can be set with and press the button again to swit...

Page 45: ...ting frequency Enter the 4 digit password 4180 after the input is completed the buzzer will beep twice and enter the frequency conversion parameter setting Frequency parameter table long press enter 4180 Code Parameter name Adjustment range default Remark R00 Hot water frequency 1 30 120Hz 60 Hz T 25 R01 Hot water frequency 2 30 120Hz 60 Hz 10 25 R02 Hot water frequency 3 30 120Hz 75 Hz 10 10 R03 ...

Page 46: ... setting parameters by wire control At this time the buzzer will sound twice in succession and all the parameter values will return to the default value 5 4 FAULT CODE SYSTEM PROTECTION Fault code Description Reason Solution Er 03 Water flow fault 1 The water system is blocked 2 Improper installation of the inlet and outlet water temperature sensor detection position leads to inaccurate detection ...

Page 47: ...n of the drive end or the main control end is incorrectly selected 4 The compressor drive is damaged and not powered on 1 Check whether the connection position of the communication line at both ends of the driver and the main control is correct 2 Check whether the communication wiring is broken or loose if so replace the communication line 3 Check whether the compressor drive is normally powered o...

Page 48: ...face between the sensor and the main board 2 Re fix the sensor probe 3 Repair the sensor connection line 4 Replace the sensor Er 16 External coil sensor fault 1 The interface between the sensor and the main board is loose or falls off 2 The sensor probe falls off 3 The sensor connection wire is open or short circuited 4 The sensor is damaged 1 Check and reinforce the interface between the sensor a...

Page 49: ...is damaged 1 Check whether the fan is working normally 2 Clean the outer fins 3 Replace the drive module Er 27 Outlet water temp sensor fault 1 The interface between the sensor and the main board is loose or falls off 2 The sensor probe falls off 3 The sensor connection wire is open or short circuited 4 The sensor is damaged 1 Check and reinforce the interface between the sensor and the main board...

Page 50: ... 1 The interface between the sensor and the main board is loose or falls off 2 The sensor probe falls off 3 The sensor connection wire is open or short circuited 4 The sensor is damaged 1 Check and reinforce the interface between the sensor and the main board 2 Re fix the sensor probe 3 Repair the sensor connection line 4 Replace the sensor Er 63 Economizer outlet temp sensor fault 1 The interface...

Page 51: ...sufficient refrigeration system 1 Replace the temperature sensor 2 Increase the refrigeration system Er 70 High pressure protection 1 The system is blocked 2 The compressor is worn out 1 Leak detection and repair of the system and charge refrigerant according to the parameters 2 Check the system and troubleshoot E20 fault will display the following fault serial numbers at the same time and switch ...

Page 52: ...le Check the input three phase voltage 264 Power input voltage is too low Input voltage is too low Check the input voltage 272 High pressure fault Compressor high pressure fault standby 288 IPM temp is too high Fan motor fault blocked air duct Check the fan motor and air duct 320 compressor peak current is too high The line current of the compressor is too large and the driver does not match the c...

Page 53: ...the installation is complete click the icon on the desktop to start the software Multi Machine 2 1 Configure the device 2 1 1 Add device After entering the interface for adding a device click Add Device to select the device type ...

Page 54: ...e the WIFI connection mode is selected by default and the operation is performed according to the actual situation of the device The connection mode can also choose the hotspot mode When the WIFI connection mode is selected and the WIFI indicator of the device flashes quickly click Connect ...

Page 55: ... the APP and the device are matched the home interface can select the device to operate 2 7 1 Menu main interface The main interface of the menu can display the current system operating mode water tank temperature working status of various outputs function keys and adjustable setting parameters Click Next ...

Page 56: ... 56 By sliding the button you can adjust the setting parameters Function buttons ...

Page 57: ...appearance of the power transformer and isolation transformer and detect the output voltage of them 2 Check that it the surface of the control interface board display control board sensor board etc with aging phenomenon 3 Clean dust and dirt on each electrical control component and control panel by brush and electronic dust remover 4 Check and tighten the output and input plug interfaces of the co...

Page 58: ...gh reliability If the construction carry out strictly in accordance with the correct procedures the probability of failure during operation is very low Compressor motors rarely burn out due to insulation failure In the events that the motor is indeed burnt out most of them were caused by not good mechanical or not good lubrication namely high temperature overheating If problems that could cause co...

Page 59: ...ery NOTE The refrigerant must be recycled or disposed of in accordance with relevant regulations The release of refrigerant into the atmosphere is harmful to the environment and is illegal 1 Remove the electrical connection to the compressor 2 Loosen the nozzle on the suction and exhaust ports of the compressor 3 Remove the faulty compressor 4 If the compressor is completely burned the refrigerati...

Page 60: ...ace the sensor F3 Liquid pipe temp sensor fault 1 The interface between the sensor and the main board is loose or detached 2 The sensor probe comes off 3 The sensor connection line is open or shorted 4 The sensor is damaged 1 Check and reinforce the interface between the sensor and the main board 2 Re fix the sensor probe 3 Repair the sensor cable 4 Replace the sensor F4 Outlet water temp Two sens...

Page 61: ...water temperature sensor is correctly installed and reinforced 3 Change the water pump 8888 flash Communication failur e between controller and main board 1 The interface between the operation panel and main board is loose 2 The signal line is open 1 Check the operation panel and motherboard 2 Strengthen the interface 3 Replace the signal cable A4 Discharge temp TD temp sensor fault 1 The interfac...

Page 62: ...p Tcm temp sensor fault 1 The interface between the sensor and the main board is loose or detached 2 The sensor probe comes off 3 The sensor connection line is open or shorted 4 The sensor is damaged 1 Check and reinforce the interface between the sensor and the main board 2 Re fix the sensor probe 3 Repair the sensor cable 4 Replace the sensor Ab High pressure Pd sensor fault 1 The interface betw...

Page 63: ... is blocked 3 The compressor is worn 1 System leak detection and repair and charge refrigerant according to parameters 2 Check the system for troubleshooting 3 Replace the compressor C7 Exhaust overheating is too low protection Y3 DC motor 1 fault 1 The DC motor line is damaged 2 The DC motor is blocked and causes stall 3 Main board is damaged 1 Check whether the DC motor wiring is correct and whe...

Page 64: ...pressor 4 Replace the compressor drive 5 If the compressor still does not start after the drive is replaced and a click sound is issued the compressor is damaged and the compressor is replaced b6 Drive DC bus voltage over and under voltage protection b7 Drive heatsink temperature sensor failure b1 Drive module protection FO b2 Drive module hardware protection b4 Compressor is not connected bA Comp...

Page 65: ......

Page 66: ...odel Unit Series No Dear customers please tick below Thank you for your valuable comments 1 Install service Very good Good Ordinary Bad 2 The effect of cooling or heating Very good Good Ordinary Bad 3 The effect of hot water Very good Good Ordinary Bad Your suggestion Installed name Stamp Technical service centre Stamp ...

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