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Gree GMVVQ1015WM/C-X, Service Manual

The Gree GMVVQ1015WM/C-X Service Manual is a valuable resource for troubleshooting and maintaining your HVAC unit. This manual provides step-by-step instructions and diagrams to help you properly service your unit. Download this manual for free from manualshive.com to ensure optimal performance of your device.

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Gree                                                                                           GMV6 HR DC Inverter VRF Units Service Manual

 

252 

4.1.5 Electronic Expansion Valve 

Specifications 

Description 

Two types of electronic expansion valves are adopted by the unit: 

①

 Heating electronic expansion valve with the largest openness of 3000 pls and 6-core coil. 

②

 Subcooling electronic expansion valve and EVI electronic expansion valve with the largest 

openness of 480 pls and 5-core coil. 

The electronic expansion valve is used to control the flow.  When the electronic 

expansion valve is closed (the openness is 0 pls), the flow is stopped. 

Circuit diagram 

Layout of electrical appliance box 

Physical position 

Models: GMV-VQ224WM/C-X

、

GMV-VQ280WM/C-X

、

GMV-VQ335WM/C-X 

 

 

 

①

Main electronic expansion valve for heating 

②

Auxiliary electronic expansion valve for heating 

③

Electronic expansion valve of subcooler 

④

EVI electronic expansion valve   

 
 
 
 

 

 

Summary of Contents for GMVVQ1015WM/C-X

Page 1: ...GMV6 HR DC Inverter VRF Units Capacity 22 4kW 246 0kW Rated Frequency 50Hz 60Hz Operation Range Cooling 10 55 C Heating 25 24 C...

Page 2: ...21 1 Precautions for Refrigerant Leakage 221 2 Refrigerant Charging 221 3 Methods for Vacuum Pumping and Charging Refrigerant of System 223 4 Inspection of Key Parts 231 5 Replacement of Key Unit Part...

Page 3: ...mprovement and innovation We have the right to make necessary revision to the product from time to time due to the reason of sales or production and reserve the right to revise the contents without fu...

Page 4: ...X 26 10 16 GMV VQ730WM C X 60 16 22 22 GMV VQ1680WM C X 28 10 18 GMV VQ784WM C X 62 18 22 22 GMV VQ1734WM C X 30 10 20 GMV VQ840WM C X 64 20 22 22 GMV VQ1790WM C X 32 10 22 GMV VQ895WM C X 66 22 22 22...

Page 5: ...pearance NCHS1D EN01600110 220 240V 50 60Hz NCHS2D EN01600090 220 240V 50 60Hz NCHS4D EN01600070 220 240V 50 60Hz NCHS8D EN01600100 220 240V 50 60Hz 1 3 Hydro Box Model Product Code Power Supply Appea...

Page 6: ...415V 3N 50 60Hz 380 415V 3N 50 60Hz 380 415V 3N 50 60Hz Rated power input kW 12 87 13 15 13 50 21 0 Rated current A 23 0 23 5 24 1 37 5 Compressor type Inverter scroll Inverter scroll Inverter scroll...

Page 7: ...3 Maximum drive IDU NO unit 26 29 33 36 High pressure gas pipe mm 22 2 25 4 25 4 25 4 Low pressure gas pipe mm 28 6 28 6 28 6 28 6 Liquid pipe mm 12 7 15 9 15 9 15 9 Outline dimensions W D H mm 1340 7...

Page 8: ...31 8 Liquid pipe mm 15 9 19 05 19 05 19 05 19 05 Outline dimensions W D H mm 930 775 1690 1340 775 1690 930 775 1690 1340 775 1690 930 775 1690 1340 775 1690 930 775 1690 1340 775 1690 930 775 1690 13...

Page 9: ...15V 3N 50 60Hz 380 415V 3N 50 60Hz 380 415V 3N 50 60Hz Rated power input kW 26 85 27 41 27 41 27 41 13 15 22 00 26 85 13 15 22 00 27 41 Rated current A 48 49 49 49 23 5 39 3 48 23 5 39 3 49 Refrigeran...

Page 10: ...400 253 400 400 253 400 400 266 400 400 Model GMV VQ1630WM C X GMV VQ1680WM C X GMV VQ1734WM C X GMV VQ1790WM C X HP HP 58 60 62 64 Combination mode 14 22 22 16 22 22 18 22 22 20 22 22 GMV VQ400WM C X...

Page 11: ...8 13 3 8 5 12 8 12 8 13 3 Maximum drive IDU NO unit 80 80 80 80 High pressure gas pipe mm 38 1 41 3 41 3 41 3 Low pressure gas pipe mm 41 3 44 5 44 5 44 5 Liquid pipe mm 19 05 22 2 22 2 22 2 Outline d...

Page 12: ...oss weight kg 253 400 400 400 253 400 400 400 266 400 400 400 340 400 400 400 Model GMV VQ2295WM C X GMV VQ2349WM C X GMV VQ2405WM C X GMV VQ2460WM C X HP HP 82 84 86 88 Combination mode 16 22 22 22 1...

Page 13: ...nnected indoor units must be in the range of 50 135 of the outdoor unit capacity The relevant parameters can be corrected by referring to the unit capacity correction table The above parameters are te...

Page 14: ...n G1 G1 Refrigerant system connection Gas pipe mm 15 9 22 2 Liquid pipe mm 9 52 9 52 Outline dimension W D H mm 515 330 606 515 330 606 Net weight kg 36 40 2 4 Parameters of Water Tank Model SXTVD300L...

Page 15: ...24 C DB 20 C 35 C DB 20 C 24 C DB Indoor temperature 14 C 25 C WB 15 C 27 C DB 15 C 25 C DB 15 C 27 C DB Indoor humidity 80 When the indoor units are all VRF fresh air processor the unit operating ra...

Page 16: ...reparation before commissioning Verification of installation Unit checking Commissioning 2 Safety Requirements WARNING Safety measures must be taken for outdoor operations All involved commissioning p...

Page 17: ...GMV6 HR DC Inverter VRF Units Service Manual 15 3 Unit Commissioning 3 1 Preparation 3 1 1 Tools Name Picture Screwdrivers Spanner Hex key Pincers Vacuum pump Electronic balance Pressure gauge Multim...

Page 18: ...he commissioning scheme determining meeting for XXX project Theme xxx Date xxx Place xxx Participants xxx Details xxx 1 2 3 Checklist of the commissioning system appearance Checklist of the equipment...

Page 19: ...indoor units Status Parameter Unit Before Startup 30 min 60 min Status parameters of the outdoor unit Outdoor ambient temperature C Power voltage V Frequency Hz Compressor current A Discharge temperat...

Page 20: ...stallation manual 8 Is the mode exchange box unit installation location selected correctly Refer to the mode exchange box installation manual Refrigerating system 9 Is the rated capacity of the intern...

Page 21: ...re in balance and the difference between the saturation temperature corresponding to the balanced pressure value and the ambient temperature higher one of the indoor and outdoor temperatures does not...

Page 22: ...nd the indoor unit correct Serial connection 38 Is the communication connection between indoor units correct 39 Is the communication connection between the indoor unit and the wired controller correct...

Page 23: ...re conducting commissioning inspection for hydro box circulating water system the outdoor unit mode exchange box and hydro box must be energized simultaneously 3 2 1 2 Test Run 3 2 1 2 1 Leakage Detec...

Page 24: ...the debugging of refrigerant system is done please arrange air exhausting again Detailed steps are as below 1 Open the hot water faucet to discharge water and open the water filling valve of water tan...

Page 25: ...ially metal chips wire ends and clamps should be removed from the body 6 Check if the terminals of the electrical components in the unit are loose and the phase sequence is correct 7 Before debugging...

Page 26: ...ld the SW3 confirm button on the master unit for over 5 seconds Selection of non wired controller commissioning mode During the commissioning press and hold the SW1 up button and SW4 back button for o...

Page 27: ...ays the quantity of online indoor units db ON 04 ON OC ON Indoor unit s quantity inspection is finished Enter into the next step automatically 05_ detect internal communication db ON 05 ON C2 ON The s...

Page 28: ...n under heating mode db ON 13 14 1 5 ON AH ON Test run under cooling mode db ON 13 14 1 5 ON Correspo nding error code ON There is fault in the pilot run stage Note fault module display db ON 13 14 1...

Page 29: ...for more than 10 seconds to enter the unit debugging function Step 5 Wait The unit automatically runs the steps 01 and 02 at this time If the master module is set incorrectly in step 01 the following...

Page 30: ...or unit quantity confirmation db ON 04 ON The quantity of online indoor units Flash After 30s of display the display is as follows if press SW3 button within 30s the display is as follows The unit aut...

Page 31: ...y status 06_outdoor unit s parts inspection db ON 06 ON OC ON The system detected that there s no fault for outdoor unit s parts Then it will automatically enter into the next step If an abnormality i...

Page 32: ...eheat confirmation db ON 08 ON OC ON Compressor s preheat time has reached 2h and then it will enter into the next step If the preheat time for compressor hasn t reached 2h there will be abnormal phen...

Page 33: ...mal At this time it is necessary to check whether the gas valve and the liquid valve are completely open or whether the main pipeline is blocked Once inspection is completed you can return to the prev...

Page 34: ...ill display like that circularly Note In the pilot run stage the unit will display corresponding procedures according to actual circumstances Once debugging is completed resume the standby status and...

Page 35: ...dules are set uniformly the static pressure value of each module remains the same When a static pressure value is set in either of the two modes the previous mode setting limit is automatically releas...

Page 36: ...D2 LED3 Function code Display status Mode Display status Current status Display status 1G On ADD On 00 Blinks 1G On ADD On 01 Blinks 1G On ADD On 02 Blinks 1G On ADD On 03 Blinks 1G On ADD On 04 Blink...

Page 37: ...ck Start to enter the commissioning function Click Start to enter the commissioning function and the software automatically performs commissioning indicates that commissioning is being performed on th...

Page 38: ...n detected on this phase which provides references for selection Click Close to close the information the number of commissioning units is displayed in 3 Confirm number of outdoor basic modules and 4...

Page 39: ...e phase and troubleshooting is required after troubleshooting the unit automatically enters the next step if no OK exists or click OK to enter the next step Click to display relevant information detec...

Page 40: ...urs in step 10 click Back to return to step 9 and then click OK in step 9 to perform commissioning again for step 10 If a U6 fault valve exception occurs in step 10 users can click Skip to skip the fa...

Page 41: ...ating When the system runs for 60 minutes without exception it determines that the refrigerant is normal the unit is shut down and the commissioning is completed Alternatively after staying for 65 min...

Page 42: ...by Using Multi functional Debugger Step 1 Connect multi functional debugger For details see the user manual of multi functional debugger Step 2 Set the address DIP switch SA8 of the master outdoor uni...

Page 43: ...the product is used the cable connection of the air conditioner unit must be recovered Otherwise the actual use will be affected 3 2 2 6 After Commissioning Organize and save the data Make complete a...

Page 44: ...temperature of the defrosting temperature sensor is 5 C to 11 C lower than the high system pressure When the system operates in heating mode the difference between the temperature of the defrosting t...

Page 45: ...ure of the indoor heat exchanger C Based on the ambient temperature the inlet pipe temperature of the same indoor unit in cooling mode is 1 C to 7 C lower than the outlet pipe temperature In heating m...

Page 46: ...red on The master module SA8 DIP switch must be reset in the project SA1 DIP switch cannot be changed The default settings of other DIP switches do not need to be changed if there are no special requi...

Page 47: ...r module in power off state in a refrigerating system The setting method is as follows Master Module Setting DIP Switch SA8_MASTER S DIP1 DIP2 Remarks 0 0 Master module 1 0 Submodule When delivered al...

Page 48: ...d b submodules White lever position White lever position ON 0 0 SA8_MASTER S White lever position White lever position ON 1 0 SA8_MASTER S 4 1 2 System Function Operations CAUTIONS System function set...

Page 49: ...n only be set n0 Auto energy saving This function can automatically reduce power consumption of the unit based on system operating parameters 01 Capability priority control This function can be set an...

Page 50: ...s Cooling heating of the entire system A2 Blinks 00 Blinks 00 Blinks Refrigerant recycle A8 Blinks 00 Blinks 00 Blinks After sales vacuum pumping n0 Blinks 01 Blinks 00 Blinks Auto energy saving n3 Bl...

Page 51: ...H On 00 Blinks 00 Blinks Efficient module rotation 4n On 00 Blinks 00 Blinks Adaptive control of noise 4q On 00 Blinks 00 Blinks Forced switch of the electric heater of an indoor unit 5L On 00 Blinks...

Page 52: ...exit the function setting status If you do not press any button in 5 minutes the system will automatically exit the current screen and the unit will resume displaying the current status Indoor unit p...

Page 53: ...cess or exit the function setting status Note Before the refrigerant recycle of a basic module the liquid pipe stop valve of the basic module must be closed After refrigerant recycle the system cannot...

Page 54: ...er unit memorizes this setting and does not clear it even upon power failure and power on again The default value is nA cooling and heating mode 4 1 2 3 3 A7 Outdoor Silence Mode Introduction This fun...

Page 55: ...Display status Current status Display status A7 On 00 Blinks OC Blinks A7 On 01 Blinks OC Blinks A7 On 02 Blinks OC Blinks A7 On 03 Blinks OC Blinks A7 On 04 Blinks OC Blinks A7 On 05 Blinks OC Blinks...

Page 56: ...ED3 Function code Display status Current process Display status Current status Display status A8 On 00 On OC On At this time the expansion valves of all indoor and outdoor units are open and the entir...

Page 57: ...er entering forced defrosting the system automatically exits according to the exit conditions and then automatically runs according to the system conditions Setting steps Step 1 Enter n3 forced defros...

Page 58: ...isplay status Current process mode Display status Current status Display status n4 On 10 On OC On n4 On 09 On OC On n4 On 08 On OC On If you do not press any button on the master unit in 5 minutes the...

Page 59: ...basic module is subject to the last received set value Setting steps Enter the function setting The master unit displays as follows LED1 LED2 LED3 Function code Display status Current process Display...

Page 60: ...D2 LED3 Function code Display status Current module Display status One button drainage code Display status qJ On OF Blinks 00 Blinks Press the SW3 confirm button The master unit displays as follows LE...

Page 61: ...e operation of compressor 1 is shielded C8 On 02 Blinks OC Blinks The operation of compressor 2 is shielded After selecting the corresponding value press the SW3 confirm button All modules display as...

Page 62: ...lay status Current status Display status C9 On 00 Blinks OC Blinks Press the SW1 up button and the SW2 down button to select the corresponding compressor emergency operation status LED1 LED2 LED3 Desc...

Page 63: ...Emergency Operation This function is after sales emergency setting when a module works abnormally It shields the abnormal module in a short time to ensure the emergency operation of other modules Set...

Page 64: ...8 hours the entire system is stopped and the indoor unit displays the Ad limit operation code 4 1 2 3 14 4J Emergency setting of components Emergency setting of components The emergency setting of com...

Page 65: ...ys as follows by default and other basic modules display normal working status LED1 LED2 LED3 Function code Display status Current process Display status Current status Display status 1C On 00 Blinks...

Page 66: ...y normal working status LED1 LED2 LED3 Function code Display status Current process Display status Current status Display status 4n On 00 Blinks OC Blinks Press the SW1 up button and the SW2 down butt...

Page 67: ...ton The master module displays as follows LED1 LED2 LED3 Function code Display status Current process Display status Current status Display status 4q On 00 On OC On 4q On 01 On OC On The master unit m...

Page 68: ...SW2 down button to select the corresponding fan anti snow mode LED1 LED2 LED3 Function code Display status Current process Display status Current status Display status 5n On 00 Blinks OC Blinks 5n On...

Page 69: ...in the order of time at an interval of 1s and LED2 displays the fault sequence number If there is no historical fault LED2 and LED3 display 00 by default Up to five latest historical faults can be que...

Page 70: ...er the last fault is displayed LED2 and LED3 display 00 indicating no more fault In fault query status press and hold the SW3 confirm button for over 5 seconds to clear all historical faults of the ou...

Page 71: ...not query 17 Current of compressor 4 The integer value is used and the wired controller does not query 18 Current of compressor 5 The integer value is used and the wired controller does not query 19 C...

Page 72: ...e corresponding status LED1 LED2 LED3 Function Code Display status Current process mode Display status Current status Display status n8 On 00 On 00 On At this time regardless of the current display st...

Page 73: ...SW3 confirm button on the master unit to enter the next level of menu The module displays as follows LED1 LED2 LED3 Function Code Display status Module address Display status Current status Display st...

Page 74: ...us Parameter code Display status Parameter code Display status 81 On 50 On 06 On LED1 LED2 LED3 Parameter code Display status Parameter code Display status Parameter code Display status 7X On Off XX O...

Page 75: ...All modules display as follows LED1 LED2 LED3 Meaning Address code Display status Function code Display status Status code Display status Restoration to default settings 3 ADD On 03 On 0C Blinks for...

Page 76: ...DIP switch at the other end indicates 1 4 3 2 Function DIP Switch Settings S2 Function DIP switch S2 is 4 bit 1 2 and 3 stand for Water tank Floor heating and Solar power respectively Each function DI...

Page 77: ...is displayed only at the interface for hot water 3 Interface mark Current interface and startup status of floor heating and hot water 4 Temperature area Display water tank temperature outlet water tem...

Page 78: ...function The corresponding interface will display this icon when rapid floor heating or rapid water heating function is valid Solar It is displayed when the hydro box is connected to solar energy Fli...

Page 79: ...Right 5 ON OFF Turn on off hot water or floor heating function return to the home page 6 MODE Under hot water interface it is used to switch the operation mode of hot water function 7 MENU OK Enter m...

Page 80: ...the main board according to outdoor ambient temperature it s no need for the user to set it Setting steps Enter hot water function setting interface press Up or Down button to select Automatic Hot Wat...

Page 81: ...age NOTE Defaulted ex factory setting for high temp sterilization cycle days is 0 4 3 3 3 4 Rapid Water Heating Function Introduction Under the allowable condition of outdoor unit start the compressor...

Page 82: ...unction is off After starting clean function Clean icon will be on during cleaning process Clean icon will blink 4 3 3 3 8 Child Lock Setting steps Simultaneously pressing the Up and Down buttons for...

Page 83: ...n On Off time setting interface switch items through Up or Down button and press Left or Right button to switch On Off time or adjust the time press MENU OK button to save setting and return to the pr...

Page 84: ...table 4 3 3 4 Parameter Inquiry and setting 4 3 3 4 1 Parameter Inquiry Parameters can be viewed under both ON and OFF status Press MENU OK button on homepage to enter menu then select View to enter i...

Page 85: ...ro box parameter press Left or Right button to switch hydro box Water Temp of Water Tank 0 100 Hot water temperature value of water tank of current hydro box hydro box parameter press Left or Right bu...

Page 86: ...138 C EXV Status of Hydro Box 0 20 Temp of Inlet Water Temp Sensor of Hydro Box 30 138 C Temp of outlet Water Temp Sensor of Hydro Box 30 138 C Water Temp of Water Tank 0 100 C Current water temperatu...

Page 87: ...30 139 C Oil Return Temp 30 139 C Condenser Inlet Temp 30 139 C Condenser Outlet Temp 30 139 C 4 3 3 4 2 Parameter Setting Parameters can be set under both ON and OFF status Press MENU OK button on ho...

Page 88: ...g to the quantity of the connected hydro box Prior Operation 00 Non priority operation 01 Priority operation 00 When power supply is insufficient set the operated hydro box preferentially for ON OFF o...

Page 89: ...15 This is reserved function Hydro Box Project No Setting 1 255 Prior Operation 00 Non priority operation 01 Priority operation 00 When power supply is insufficient set the operated hydro box prefere...

Page 90: ...50 C 50 122 F 10 50 C Compensation Value Z for Cooling Water Heating 5 60 C 41 140 F 5 60 C Lower Speed Limit M for Cooling Water Heating 5 30 C 41 86 F 5 30 C Upper Speed Limit N for Cooling Water He...

Page 91: ...0 K1 40min 60 K1 60min 50 System Energy Saving 00 Disable 01 Enable 00 ODU Quiet 00 No silent mode 01 09 Intelligent night silent mode1 to 9 10 12 Forced silent mode1 to 3 01 This is reserved function...

Page 92: ...function of exit tube temperature sensor d7 Malfunction of humidity sensor d8 Malfunction of water temperature sensor d9 Malfunction of jumper cap dA Web address of IDU is abnormal dH PCB of wired con...

Page 93: ...current protection of compressor 5 J6 Over current protection of compressor 6 J7 Gas mixing protection of 4 way valve J8 High pressure ratio protection of system J9 Low pressure ratio protection of s...

Page 94: ...gh temperature protection of fan H9 Desynchronizing protection of inverter fan HA Malfunction of drive storage chip of inverter outdoor fan HH High voltage protection of fan s drive DC bus bar HC Malf...

Page 95: ...he matching ratio of rated capacity for IDU and ODU is too low CE Communication malfunction between mode exchanger and IDU CF Malfunction of multiple main control units CJ Address DIP switch code of s...

Page 96: ...indoor unit and receiver of indoor unit display Fault diagnosis This is a status code It indicates that the system has entered refrigerant recycle running state and will automatically start Possible c...

Page 97: ...tatus code It indicates that the system has entered silent mode settings state Possible causes Troubleshooting not required 2 7 A8 Vacuum Pumping Mode Fault display main board of outdoor unit displays...

Page 98: ...an Prompt Fault display wired controller of indoor unit and receiver of indoor unit display Applicable models all indoor units Fault diagnosis This is a status code It indicates that the filter of ind...

Page 99: ...outdoor unit wired controller of indoor unit and receiver of indoor unit display Fault diagnosis This is a status code It indicates that an emergency running state has been set for the system but the...

Page 100: ...perly Yes Replace the main control board 2 18 b2 Defrosting Temperature Sensor 1 Fault Fault display main board of outdoor unit wired controller of indoor unit and receiver of indoor unit display Faul...

Page 101: ...rly Yes Replace the main control board 2 19 b3 Defrosting Temperature Sensor 2 Fault Fault display main board of outdoor unit wired controller of indoor unit and receiver of indoor unit display Fault...

Page 102: ...s Replace the main control board 2 20 b4 Subcooler s Liquid Outlet Temperature Sensor Fault Fault display main board of outdoor unit wired controller of indoor unit and receiver of indoor unit display...

Page 103: ...perly Yes Replace the main control board 2 21 b5 Subcooler s Gas Outlet Temperature Sensor Fault Fault display main board of outdoor unit wired controller of indoor unit and receiver of indoor unit di...

Page 104: ...improperly Yes Replace the main control board 2 22 b6 Suction Temperature Sensor 1 Fault Fault display main board of outdoor unit wired controller of indoor unit and receiver of indoor unit display Fa...

Page 105: ...erly Yes Replace the main control board 2 23 b7 Suction Temperature Sensor 2 Fault Fault display main board of outdoor unit wired controller of indoor unit and receiver of indoor unit display Fault di...

Page 106: ...operly Yes Replace the main control board 2 24 b8 Outdoor Humidity Sensor Fault Fault display main board of outdoor unit wired controller of indoor unit and receiver of indoor unit display Fault diagn...

Page 107: ...lace the main control board 2 25 b9 Heat Exchanger s Gas Outlet Temperature Sensor Fault Fault display main board of outdoor unit wired controller of indoor unit and receiver of indoor unit display Fa...

Page 108: ...e improperly Yes Replace the main control board 2 26 bA Oil Return Temperature Sensor Fault Fault display main board of outdoor unit wired controller of indoor unit and receiver of indoor unit display...

Page 109: ...control board 2 27 bd Subcooler air inlet temperature sensor error Error display ODU main board IDU wired controller IDU receive light board will display Applicable model all ODUs Error judgment condi...

Page 110: ...han the low pressure the unit will report that the high and low pressure is wrongly connected Possible reasons The resistance of high pressure sensor is abnormal the test value is high The resistance...

Page 111: ...d Controller Fault display main board of outdoor unit wired controller of indoor unit and receiver of indoor unit display Fault diagnosis There is no communication between the outdoor unit and indoor...

Page 112: ...unication cables are properly connected Whether the contact between the communication cable and terminal block is poor Yes No Make sure that no more than two wired controllers are connected to the ind...

Page 113: ...eplace the main control board Whether the outdoor unit s compressor drive board is normal Yes 2 32 C3 Communication Fault Between the Primary Controller and Inverter Fan Driver Fault display main boar...

Page 114: ...main control board may be abnormal Yes Replace the main control board Whether the outdoor unit s fan drive board is normal Yes 2 33 C4 Indoor Unit Loss Fault Fault display main board of outdoor unit...

Page 115: ...is Check the engineering SN of indoor units as the indoor units having the same numbers generate the same fault However the fault is displayed and required to be removed only when the commissioning so...

Page 116: ...red on Troubleshooting No Yes C6 Alarm on Inconsistent Number of Outdoor Units Whether all modules are properly energized Power on the units No Connect the communication cables properly The main contr...

Page 117: ...f the online indoor and outdoor units When the ratio of the total rated capacity of indoor units to the total rated capacity of outdoor units exceeds 1 35 the unit will stop operation and display the...

Page 118: ...Make sure that only one master unit exists in the network After redialing power on the redialed modules again No Properly connect the communication cable and make sure that it is in the same network...

Page 119: ...wired controller of indoor unit and receiver of indoor unit display Fault diagnosis The main board detects the master DIP switch SA8 and determines whether it is the master When multiple master units...

Page 120: ...tches keep only one master unit s DIP switch SA2 to be 00000 and other master units DIP switches SA2 to be different Abnormal DIP switch or main board Troubleshooting Yes CJ System Address Code Confli...

Page 121: ...ndoor units enter the wired controller parameter settings P13 to set the address of one of the wired controllers to be 02 that is to be the secondary wired controller 2 46 Cb IP Address Assignment Ove...

Page 122: ...de exchanger main board will display Applicable model all mode exchangers Error judgment condition and method For the mode exchanger no ODU communication is detected in 1 consecutive minute Possible r...

Page 123: ...t between mode exchanger main control board and ODU main control board terminal For the mode exchanger with several control boards the contact between the main board and communication terminal of subs...

Page 124: ...the AD value of temperature sensor through temperature sensor detecting circuit and judge the range of AD value If the sampling AD value exceeds upper limit and lower limit in 5 seconds continuously...

Page 125: ...tters and plug it tightly The detection circuit may operate improperly Yes Replace the main control board No Is the problem solved after the ambient temperature sensor is replaced Whether the interfac...

Page 126: ...oreign matters No 2 54 d5 Middle Part Temperature Sensor Fault Reserved 2 55 d6 Outlet Pipe Temperature Sensor Fault Fault display wired controller of indoor unit and receiver of indoor unit display F...

Page 127: ...et pipe temperature sensor gets loose or contains foreign matters No 2 56 d7 Humidity Sensor Fault Fault display wired controller of indoor unit and receiver of indoor unit display Fault diagnosis The...

Page 128: ...r the interface terminal between the main board and humidity sensor gets loose or contains foreign matters No 2 57 d8 Water Temperature Sensor Fault Reserved 2 58 d9 Jumper Cap Fault Fault display wir...

Page 129: ...Fault display wired controller of indoor unit and receiver of indoor unit display Fault diagnosis Check the indoor unit s address chip and IP address If the address chip cannot be read the indoor unit...

Page 130: ...s Troubleshooting No dH Abnormal Circuit Board of Wired Controller Install the keypad and display panel respectively The IIC may be in poor contact with related components due to moisture or corrosion...

Page 131: ...emperature sensor and determines the range of AD value When the sampled AD value exceeds the limits for 5 consecutive seconds the fault is generated Possible causes Poor contact between the air outlet...

Page 132: ...ensor interface terminal to see if it is loose or any foreign objects inside If yes reconnect it after treatment Step 2 check if the temperature sensor is abnormal if yes replace the temperature senso...

Page 133: ...seconds continuously report the error Possible reasons Poor contact between temperature sensor and terminal in main board interface Temperature sensor is abnormal Detecting circuit is abnormal Troubl...

Page 134: ...ain it again Step 4 If the above tests are normal then the detecting circuit might be abnormal please replace the main board 2 68 db Engineering Commissioning Fault display main board of outdoor unit...

Page 135: ...th swing assy Error judgment condition and method Report alarm through judging the status of limit switch 1 and 2 When the swing structure is faulted the indoor unit will not stop the display board do...

Page 136: ...eater than 65 C or the high pressure switch is disconnected it indicates that the high pressure is too high and the unit will stop running to ensure safe operation Possible causes Check valve of the o...

Page 137: ...and the main board Check the swing motor and input signal Replace the main control board Clean the pipes to avoid s hort circuit Reinstall the outdoor unit s panel Fully open the check valve of the ou...

Page 138: ...he inlet and outlet pipes of the indoor unit coil and the temperature at the low pressure is less than 10 C it indicates that the unit operates improperly Solution First make sure that the EXV coil is...

Page 139: ...accordance with the design requirements 2 73 E3 System Low Pressure Protection Fault display main board of outdoor unit wired controller of indoor unit and receiver of indoor unit display Fault diagno...

Page 140: ...oor and outdoor electronic expansion valves work properly Is the air return filter of the indoor unit clogged with dirt The unit pipes are clogged Clean the filter Replace the electronic expansion val...

Page 141: ...the coil or the main board If able to reset the unit normally inspect other parts of the unit Step 3 Power on the units based on the capacity and number of indoor units enabled previously in the case...

Page 142: ...on Step 2 turn on the unit according to the IDU capacity and quantity in previous protection status after confirming the coil of IDU and ODU expansion valve is correctly connected disconnect the power...

Page 143: ...t Whether system clock exception is also generated check by using the commissioning software Replace the CPU small board No Replace the compressor drive board Address chip and memory chip are abnormal...

Page 144: ...sor and the main board interface Poor contact between high pressure sensor and part where the pressure is detected Abnormal high pressure sensor Abnormal sensor detection circuit Troubleshooting Yes N...

Page 145: ...d the main board interface Poor contact between low pressure sensor and part where the pressure is detected Abnormal low pressure sensor Abnormal low pressure sensor detection circuit Troubleshooting...

Page 146: ...eeds the limits for 30 consecutive seconds the fault is generated Possible causes Poor contact between the discharge temperature sensor and the main board interface Abnormal discharge temperature sens...

Page 147: ...eeds the limits for 30 consecutive seconds the fault is generated Possible causes Poor contact between the discharge temperature sensor and the main board interface Abnormal discharge temperature sens...

Page 148: ...eeds the limits for 30 consecutive seconds the fault is generated Possible causes Poor contact between the discharge temperature sensor and the main board interface Abnormal discharge temperature sens...

Page 149: ...eeds the limits for 30 consecutive seconds the fault is generated Possible causes Poor contact between the discharge temperature sensor and the main board interface Abnormal discharge temperature sens...

Page 150: ...eeds the limits for 30 consecutive seconds the fault is generated Possible causes Poor contact between the discharge temperature sensor and the main board interface Abnormal discharge temperature sens...

Page 151: ...eeds the limits for 30 consecutive seconds the fault is generated Possible causes Poor contact between the discharge temperature sensor and the main board interface Abnormal discharge temperature sens...

Page 152: ...ve seconds the fault is generated Possible causes Poor contact between the circuit sensor and the main board interface Abnormal small board of circuit sensor Abnormal detection circuit Troubleshooting...

Page 153: ...ve seconds the fault is generated Possible causes Poor contact between the circuit sensor and the main board interface Abnormal small board of circuit sensor Abnormal detection circuit Troubleshooting...

Page 154: ...ve seconds the fault is generated Possible causes Poor contact between the circuit sensor and the main board interface Abnormal small board of circuit sensor Abnormal detection circuit Troubleshooting...

Page 155: ...ve seconds the fault is generated Possible causes Poor contact between the circuit sensor and the main board interface Abnormal small board of circuit sensor Abnormal detection circuit Troubleshooting...

Page 156: ...ve seconds the fault is generated Possible causes Poor contact between the circuit sensor and the main board interface Abnormal small board of circuit sensor Abnormal detection circuit Troubleshooting...

Page 157: ...ve seconds the fault is generated Possible causes Poor contact between the circuit sensor and the main board interface Abnormal small board of circuit sensor Abnormal detection circuit Troubleshooting...

Page 158: ...eds the limits for 30 consecutive seconds the fault is generated Possible causes Poor contact between the shell roof temperature sensor and the main board interface Abnormal shell roof temperature sen...

Page 159: ...l detection circuit Troubleshooting Yes Fb Shell Roof Temperature Sensor Fault of Compressor 2 Remove the foreign matters and plug it tightly The detection circuit may operate improperly Yes Replace t...

Page 160: ...ay mode exchanger main board will display Applicable mode all mode exchangers Error judgment condition and method Sample the AD value of temperature sensor through temperature sensor detecting circuit...

Page 161: ...gital LED of the main control board of the outdoor unit displays HF Loss of synchronization protection for the inverter fan 2 digit digital LED of the main control board of the outdoor unit displays H...

Page 162: ...code displayed on the wired controller of the indoor unit If the wired controller displays H2 check the fault code displayed on the 2 digit digital LED of the main control board of the outdoor unit b...

Page 163: ...it indicates the reset protection for the fan drive board Possible causes The fan drive board operates improperly Troubleshooting H3 Reset Protection for the Fan Drive Module The fan drive board is ab...

Page 164: ...Inverter Fan Over current Protection The fan drive board is abnormal Yes Replace the fan drive board No Whether the U V and W phases of fan wires are connected properly Yes No Replace the fan Whether...

Page 165: ...odule Protection for the Fan Drive The fan drive board is abnormal Yes Replace the fan drive board No Whether the U V and W phases of fan wires are connected properly Yes No Replace the fan Whether th...

Page 166: ...digit digital LED of the outdoor unit s main control board is H7 it indicates the temperature sensor fault for the fan drive Possible causes The fan drive board operates improperly Troubleshooting H7...

Page 167: ...The IPM module is not covered or unevenly covered by thermal grease or covered by dried thermal grease The IPM module s screws are not tightened The fan drive board operates improperly Troubleshootin...

Page 168: ...eshooting H9 Loss of Synchronization Protection for the Inverter Fan The fan drive board is abnormal Yes Replace the fan drive board No Whether the U V and W phases of fan wires are connected properly...

Page 169: ...ection Circuit Fault of Fan Drive The fan drive board is abnormal Yes Replace the fan drive board No If the problem resolved after the unit is powered off and then powered on for more than three times...

Page 170: ...utdoor unit displays Fault diagnosis If the fault code displayed on the 2 digit digital LED of the outdoor unit s main control board is HL it indicates the under voltage protection for the DC bus of f...

Page 171: ...r Fan Startup Failure The fan drive board is abnormal Yes Replace the fan drive board No Whether the U V and W phases of fan wires are connected properly Yes No Replace the fan Whether the resistance...

Page 172: ...as a fault thereby causing the shutdown of the unit to ensure safe operation Possible causes Other modules have faults thereby causing the unit to stop operation Troubleshooting Troubleshoot other mod...

Page 173: ...uns at the lowest frequency the compressor may have enabled normal over current protection In this case check whether the fan operates properly and whether the ambient temperature is normal and whethe...

Page 174: ...ooting J2 Compressor 2 Over current Protection The compressor is abnormal Yes Yes Replace the compressor No Replace the drive module If the high pressure value of the unit is still above 60 C when the...

Page 175: ...ooting J3 Compressor 3 Over current Protection The compressor is abnormal Yes Yes Replace the compressor No Replace the drive module If the high pressure value of the unit is still above 60 C when the...

Page 176: ...ooting J4 Compressor 4 Over current Protection The compressor is abnormal Yes Yes Replace the compressor No Replace the drive module If the high pressure value of the unit is still above 60 C when the...

Page 177: ...ooting J5 Compressor 5 Over current Protection The compressor is abnormal Yes Yes Replace the compressor No Replace the drive module If the high pressure value of the unit is still above 60 C when the...

Page 178: ...ooting J6 Compressor 6 Over current Protection The compressor is abnormal Yes Yes Replace the compressor No Replace the drive module If the high pressure value of the unit is still above 60 C when the...

Page 179: ...and receiver of indoor unit display Fault diagnosis When the difference between the system high pressure and low pressure during operation detected by the pressure sensor is less than 0 1 MPa the uni...

Page 180: ...t the four way valve is abnormal No Connect them properly and reliably No Replace the main control board Whether the difference between the high pressure and the low pressure of the unit during operat...

Page 181: ...l The ambient temperature where the unit operates exceeds the limit Troubleshooting J8 Over High Pressure Ratio Protection Replace the pressure sensor Yes Whether the air return temperature of the uni...

Page 182: ...mode outdoor ambient temperature 5 C to 50 C indoor ambient temperature 16 C to 32 C requirements in heating mode outdoor ambient temperature 20 C to 24 C indoor ambient temperature 16 C to 30 C Wheth...

Page 183: ...ault code will be displayed in the temperature area if the unit indoor has multiple faults fault codes will be displayed in the temperature area at an interval of 3 seconds Press the ON OFF button on...

Page 184: ...er of indoor unit display Applicable models all indoor units Fault diagnosis Check whether the indoor unit rotates slowly or stops or whether there exists external fan protection signal If yes it indi...

Page 185: ...me model s motor Yes No The main board of indoor unit operates improperly Replace the main board of indoor unit Yes For an AC motor without fan protection signal input for details see the circuit diag...

Page 186: ...he level of water in the drainage pan is high but the float switch works normally check whether the drain pump is working normally Whether the drain pipe is abnormal The drain pipe s hoisting height m...

Page 187: ...ated Possible causes The wires of the wired controller are short circuited The main board of indoor unit operates improperly The main board of the wired controller is abnormal Troubleshooting L4 Suppl...

Page 188: ...her dust accumulates on the filter or evaporator Replace the motor of indoor unit No No Whether the motor of indoor unit is normal In the case of an AC motor if the motor slows down or stops when a fa...

Page 189: ...Possible causes The master indoor unit is disconnected The main board of the master indoor unit is replaced The main board of the master indoor unit is faulty Troubleshooting L7 No Master Indoor Unit...

Page 190: ...ntegrated Control Whether more than 16 indoor units are connected to the wired controller Set the wired controller so that one wired controller can only control 16 indoor units at most Yes Enter the w...

Page 191: ...t that it cannot recognize such as floor heating in a modular DC inverter VRF system In this case to troubleshoot this fault you can remove the involved indoor units or change the outdoor unit to make...

Page 192: ...onding relationship for the floor heating shunt valve and IDU the generator shall detect and judge the project code of IDU to see if the nonexistent project code is set or shunt valve setting error al...

Page 193: ...ler which controls multiple indoor units in the same branch of the same mode exchanger if no please connect the indoor units under different branches to different wired controllers Step 2 if the indoo...

Page 194: ...and receiver of indoor unit display Fault diagnosis This is a status code of a function It indicates that the unit has entered energy efficiency state 00 indicates comfort as priority 01 indicates ene...

Page 195: ...unit has entered unit fault query state In this case you can query five historical faults of indoor and outdoor units Keep in mind that you have to query the faults respectively for indoor units and o...

Page 196: ...ossible causes Troubleshooting not required 2 142 nH Heating Only Unit Fault display main board of outdoor unit displays Fault diagnosis The code indicates that the indoor unit only operates in heatin...

Page 197: ...IDU IPM module protection Error display ODU main board and IDU wired controller will display Applicable model external drive DC fan Error judgment condition and method Check the error code on the disp...

Page 198: ...eign objects or the motor shaft is rusty The fan is damaged please replace the fan Other errors occur at the Same time e g the IDU non synchronism protection o7 Yes Yes Yes Yes 2 147 o7 IDU non synchr...

Page 199: ...if the fan is blocked due to foreign objects or the motor shaft is rusty The fan is damaged please replace the fan Other errors occur at the same time e g the IPM module protection o3 Yes Yes Yes Yes...

Page 200: ...confirm and replace the faulted board No 2 149 o9 IDU main control communication error Error display ODU main board and IDU wired controller will display Applicable model multi VRF IDU with DC motor E...

Page 201: ...lt according to the corresponding troubleshooting methods Possible causes Compressor drive module reset protection 2 digit digital LED of the main control board of the outdoor unit displays P3 Tempera...

Page 202: ...ltage Protection for the Compressor Drive Board Fault display wired controller of indoor unit displays Fault diagnosis If fault code displayed on the wired controller of the indoor unit is P2 check th...

Page 203: ...erter Compressor Over current Protection Fault display main board of outdoor unit displays Fault diagnosis If the fault code displayed on the 2 digit digital LED of the outdoor unit s main control boa...

Page 204: ...ce values are equal to each other Is grounding insulation of the phase windings of the compressor normal generally greater than 2 megohms Yes Yes Remove foreign matters and open the valve Whether the...

Page 205: ...fault code displayed on the 2 digit digital LED of the outdoor unit s main control board is P6 it indicates the IPM module protection for the compressor drive Possible causes Poor contact of compress...

Page 206: ...em solved after the unit is powered off and powered on for more than three times The compressor drive board operates improperly No Replace the compressor drive board Yes 2 157 P8 IPM Over Temperature...

Page 207: ...screws are tightened and whether the IPM module is coated with thermal grease No 2 158 P9 Loss of Synchronization Protection for Inverter Compressor Fault display main board of outdoor unit displays...

Page 208: ...ach other Is grounding insulation of the phase windings of the compressor normal generally greater than 2 megohms Yes Yes Remove foreign matters and open the valve Whether the system is clogged and wh...

Page 209: ...g PC Current Detection Circuit Fault of Compressor Driver Is the problem resolved after the unit is powered off and then powered on for more than three times The compressor drive board operates improp...

Page 210: ...5 GMV5S series Fault diagnosis When the input power cable of the main board has a voltage below 320 V the unit triggers protection against faults Possible causes The unit s input power cable has a vol...

Page 211: ...the windings of each phase for the compressor is normal generally less than 2 ohms Whether the resistance values are equal to each other Is grounding insulation of the phase windings of the compresso...

Page 212: ...tdoor units Fault diagnosis When the capacity DIP switch detected by the outdoor unit s main board is inconsistent with the unit s actual capacity or the jumper cap value detected by the outdoor unit...

Page 213: ...ing U3 Power Phase Sequence Protection The detection circuit may operate improperly Yes Whether the three phase power supply is connected properly No Replace the main control board 2 166 U4 Refrigeran...

Page 214: ...mal the unit prompts you to confirm whether you want to open the check valve again After confirmation press SW4 to proceed Possible causes The check valve of the outdoor unit is not open Troubleshooti...

Page 215: ...receiver of indoor unit display Fault diagnosis During commissioning process check the pressure of the unit to determine whether the pipes of the outdoor unit are blocked Any abnormal parameters foun...

Page 216: ...eshooting Re dial the DIP switch according to the DIP switch table 2 172 UE Auto Refrigerant Charging Void Fault display main board of outdoor unit wired controller of indoor unit and receiver of indo...

Page 217: ...range of AD value If the sampling AD value exceeds upper limit and lower limit in 5 seconds continuously report the error Possible reasons Poor contact between air inlet temperature sensor and main bo...

Page 218: ...appeared Check the terminal between main board and IFD to see if it is loose or any foreign objects inside No 2 176 y8 Indoor air box sensor general error Error display ODU main board and IDU wired co...

Page 219: ...rmal test data No Is the error disappeared No Replace the main board Yes 2 177 Ineffective Cooling and Heating Applicable models all indoor units Fault diagnosis 1 In cooling mode when the electronic...

Page 220: ...et the requirements of the unit In cooling mode check whether the ambient temperature of the indoor unit is higher than 32 C If it occurs within the first one hour after startup it is acceptable other...

Page 221: ...105 or higher Possible reasons The ambient temperature is 55 or higher The temperature of the compressor is 105 or higher High pressure sensor is abnormal Temperature sensor is abnormal Troubleshootin...

Page 222: ...Solution Malfunctioned cooling and heating The air inlet or air outlet of the indoor or outdoor unit is blocked Remove obstacles Improper set of temperature Adjust the settings of the remote controlle...

Page 223: ...owable concentration kg m3 Refrigerant charge kg Adding quantity of refrigerant kg ex factory charge of ODU kg Refrigerant charge Max refrigerant charge 3 When refrigerant charge has exceeded the max...

Page 224: ...t according to the refrigerant charging method of the general indoor unit For example1 Outdoor unit consists of one 28kW module and one 45kW module Five 14kW duct type units are used as indoor units I...

Page 225: ...uuming as follows 1 Before vacuum pumping if there is no need to conduct vacuum pumping for the outdoor unit please confirm that the high pressure gas pipe low pressure gas pipe and cut off valve are...

Page 226: ...ating valve and stop vacuuming for 1 hour Confirm that the pressure of the regulating valve has not risen 3 1 2 2 Vacuum pumping operation for the system without outdoor unit For the pipeline only wit...

Page 227: ...ation function of multi functional debugger operating steps are as below In the power on interface of multi functional debugger select CAN Communication and press OK button Select Project Setting to e...

Page 228: ...e vacuum pump to the detection joints of the pipelines for connecting mode converter to outdoor unit side with charging pipe 5 Vacuumize it for 4 hours and check if the vacuum degree reaches 0 1 MPa o...

Page 229: ...can t reach the vacuum degree of 0 1 MPa repeat this operation until the water is drained 7 After vacuuming close the valve of the regulating valve and stop vacuuming for 1 hour Confirm that the pres...

Page 230: ...lose the high and low pressure gauge pipes of pressure gauge 1 as well as the high pressure gauge pipe of pressure gauge 2 Disconnect the medium pressure gauge pipes of the two pressure gauges from th...

Page 231: ...nto the system and the calculated added amount of refrigerant has not been fully charged into the system record current total pre charging amount m m1 m2 m3 m4 mn 1 mn Remained refrigerant for start u...

Page 232: ...it see the debugging part for the specific operation Step 4 When it comes to the procedure of charging refrigerant open the refrigerant tank valve and charge the residual refrigerant m Step 5 When all...

Page 233: ...are 380 415V 3N 50 60Hz neutral line and earth line The drive board can convert AC power to DC power of about 540 V 1 41 x power voltage DC AC three phase inverter Use of power to the main control bo...

Page 234: ...ral line and earth line The drive board can convert AC power to DC power of about 540 V 1 41 x power voltage DC AC three phase inverter Use of power to the main control board Phase protection Providin...

Page 235: ...line The drive board can convert AC power to DC power of about 540 V 1 41 x power voltage DC AC three phase inverter Use of power to the main control board Phase protection Providing 220V AC power for...

Page 236: ...drive board can convert AC power to DC power of about 540 V 1 41 x power voltage DC AC three phase inverter Use of power to the main control board Phase protection Providing 220V AC power for the sol...

Page 237: ...om the main switch board to the ODU 1 Use an ohmmeter of at least 500V DC to check whether the insulation resistance between each phase and the ground reaches at least 1 megohm Small insulation resist...

Page 238: ...electrical appliance box Physical position 1 Gas separator outlet pipe temperature sensor RT3 2 Discharge temperature sensor of inverter compressor RT2 3 Shell top temperature of inverter compress RT...

Page 239: ...box Physical position 1 Gas separator outlet pipe temperature sensor RT3 2 Gas separator inlet pipe temperature sensor RT4 3 Defrosting temperature sensor 1 RT5 4 Outlet pipe temperature sensor of co...

Page 240: ...temperature sensor RT5 2 Shell top temperature of inverter compress1 RT1 3 Defrosting temperature sensor 1 RT7 4 Gas separator inlet pipe temperature sensor RT6 5 Discharge temperature sensor of inve...

Page 241: ...the connecting terminal of the temperature sensors is firm 3 Use a thermometer to measure the temperature of the spot sensed by the temperature sensors 4 Disconnect the connecting terminal of the cor...

Page 242: ...44 15 108 7 10 82 75 5 63 46 0 49 02 5 38 15 10 29 9 15 23 6 20 18 75 25 15 30 12 07 35 9 779 40 7 967 45 6 529 50 5 379 55 4 456 60 3 711 65 3 105 70 2 611 75 2 205 80 1 871 85 1 594 90 1 363 95 1 17...

Page 243: ...265 5 20 196 9 15 145 10 110 3 5 84 61 0 65 37 5 50 87 10 39 87 15 31 47 20 25 01 25 20 30 16 1 35 13 04 40 10 62 45 8 705 50 7 173 55 5 942 60 4 948 65 4 14 70 3 481 75 2 94 80 2 495 85 2 125 90 1 81...

Page 244: ...20 486 55 15 362 99 10 274 02 5 209 05 0 161 02 5 126 17 10 98 006 15 77 349 20 61 478 25 49 191 30 39 61 35 32 088 40 26 147 45 21 425 50 17 651 55 14 618 60 12 168 65 10 178 70 8 5551 75 7 2245 80...

Page 245: ...losed when it is inactive open when it is active Circuit diagram Layout of electrical appliance box Physical position Models GMV VQ224WM C X GMV VQ280WM C X GMV VQ335WM C X 1 Pressure valve YV10 2 Inl...

Page 246: ...sed when it is inactive open when it is active Circuit diagram Layout of electrical appliance box Physical position Models GMV VQ400WM C X GMV VQ450WM C X 1 Pressure valve YV10 2 Gas balance valve YV1...

Page 247: ...n when it is active Circuit diagram Layout of electrical appliance box Physical position Models GMV VQ504WM C X GMV VQ560WM C X GMV VQ615WM C X 1 High pressure valve YV8 2 Inlet liquid valve YV12 3 Pr...

Page 248: ...necting terminal of the solenoid valve is firm 3 Disconnect the corresponding valve s coil terminal from the main board and use a multimeter to measure the coil resistance 4 If the measured resistance...

Page 249: ...cooling and heating operation if the cooling 4 way valve is energized it will conduct heating operation if the cooling 4 way valve is not energized it will conduct cooling operation The heating 4 way...

Page 250: ...ooling and heating operation if the cooling 4 way valve is energized it will conduct heating operation if the cooling 4 way valve is not energized it will conduct cooling operation The heating 4 way v...

Page 251: ...nd heating operation if the cooling 4 way valve is energized it will conduct heating operation if the cooling 4 way valve is not energized it will conduct cooling operation The heating 4 way valve wil...

Page 252: ...avoiding scald Operating mode 4 way valve Pipeline status S pipe E pipe C pipe D pipe Cooling operation Cooling 4 way valve Low temperature Low temperature High temperature High temperature Heating 4...

Page 253: ...Manual 251 4 If the measured resistance does not match with that in the following table the coil needs to be replaced Coil Interface No Resistance Normal range of deviation Main cooling 4 way valve CN...

Page 254: ...electronic expansion valve with the largest openness of 480 pls and 5 core coil The electronic expansion valve is used to control the flow When the electronic expansion valve is closed the openness is...

Page 255: ...c expansion valve with the largest openness of 480 pls and 5 core coil The electronic expansion valve is used to control the flow When the electronic expansion valve is closed the openness is 0 pls th...

Page 256: ...e largest openness of 480 pls and 5 core coil The electronic expansion valve is used to control the flow When the electronic expansion valve is closed the openness is 0 pls the flow is stopped Circuit...

Page 257: ...power of the ODU disconnect the coil terminal of the electronic expansion valve from the main board and use a multimeter to measure the resistance of each contact point of the terminal The normal ran...

Page 258: ...he fans are connected to the fan drive board by a group of three power cables The fans are powered by a DC inverter motor and can adjust the speed automatically according to the environmental temperat...

Page 259: ...Gree GMV6 HR DC Inverter VRF Units Service Manual 257 Models GMV VQ400WM C X GMV VQ450WM C X Circuit diagram Layout of electrical appliance box Physical position 1 Fan 1 2 Fan 2...

Page 260: ...Gree GMV6 HR DC Inverter VRF Units Service Manual 258 Models GMV VQ504WM C X GMV VQ560WM C X GMV VQ615WM C X Circuit diagram Layout of electrical appliance box Physical position 1 Fan 1 2 Fan 2...

Page 261: ...es and baffle ring deform and needs to be replaced 4 1 6 2 Electrical Inspection Switch off the power of the ODU Disconnect the connector between the fan motor and fan drive board Use a multimeter to...

Page 262: ...Gree GMV6 HR DC Inverter VRF Units Service Manual 260 Models GMV VQ224WM C X GMV VQ280WM C X GMV VQ335WM C X Circuit diagram Physical position...

Page 263: ...Gree GMV6 HR DC Inverter VRF Units Service Manual 261 Models GMV VQ400WM C X GMV VQ450WM C X Circuit diagram Physical position...

Page 264: ...Gree GMV6 HR DC Inverter VRF Units Service Manual 262 Models GMV VQ504WM C X GMV VQ560WM C X GMV VQ615WM C X Circuit diagram Physical position 1 Compressor 1 2 Compressor 2...

Page 265: ...quid valve pressure and monitor the measured data on a PC Compare the data to the following table of recommended current The current may deviates by about 10 depending on the inverter compressor s spe...

Page 266: ...the evaporation temperature and condensation temperature is shown as follows Current curve Current A Evaporation temperature C When the compressor frequency is 90 Hz the current curve corresponding to...

Page 267: ...ing at another frequency the current curve can be obtained through interpolation calculation of the above frequency 2 Inverter compressor DA80PHDG D1Y2 When the compressor frequency is 30 Hz the curre...

Page 268: ...e current curve corresponding to the evaporation temperature and condensation temperature is shown as follows Current Evaporation temperature C When the compressor frequency is 120 Hz the current curv...

Page 269: ...e normally running unit Step 3 Check whether the electronic expansion valve of the ODU and 4 way valve work properly and whether the oil return pipeline and oil return valve are normal Touch the oil r...

Page 270: ...er part of the electronic expansion valve and check whether the resetting of the unit can be clearly felt 2 4 way valve When it is normal the temperature different between it and the four copper tubes...

Page 271: ...stem runs in the heating mode E indicates that the pipeline is in the high pressure and high temperature status while C and S indicate that the pipeline is in the low pressure and low temperature stat...

Page 272: ...bonding pad and the red probe to the L1 wiring terminal In the normal condition the multimeter will not beep If it does the drive board is damaged and needs to be replaced 6 Point the black probe to...

Page 273: ...placed 13 Point the black probe to the N1 bonding pad and the red probe to W wiring terminal In the normal condition the multimeter will not beep If it does the drive board is damaged and needs to be...

Page 274: ...When the unit cannot be started properly the solenoid valves of the system including the electronic expansion valve and oil return valve need to be checked using the same method described above Step...

Page 275: ...or drive board is used to control the operation of the compressor Specifications Description The compressor drive board is used to control the operation of the compressor Models GMV VQ224WM C X GMV VQ...

Page 276: ...Gree GMV6 HR DC Inverter VRF Units Service Manual 274 Models GMV VQ400WM C X GMV VQ450WM C X Circuit diagram Layout of electrical appliance box Physical position...

Page 277: ...Gree GMV6 HR DC Inverter VRF Units Service Manual 275 Models GMV VQ504WM C X GMV VQ560WM C X GMV VQ615WM C X Circuit diagram Layout of electrical appliance box Physical position...

Page 278: ...er point the red probe of the multimeter to the N1 bonding pad shown in the following figure and the black probe to L1 L2 and L3 wiring terminals respectively and check the readings of the multimeter...

Page 279: ...rive board is used to control the operation of the fan s Specifications Description The compressor drive board is used to control the operation of the compressor Models GMV VQ224WM C X GMV VQ280WM C X...

Page 280: ...Gree GMV6 HR DC Inverter VRF Units Service Manual 278 Models GMV VQ400WM C X GMV VQ450WM C X Circuit diagram Layout of electrical appliance box Physical position...

Page 281: ...Gree GMV6 HR DC Inverter VRF Units Service Manual 279 Models GMV VQ504WM C X GMV VQ560WM C X GMV VQ615WM C X Circuit diagram Layout of electrical appliance box Physical position...

Page 282: ...onding pad shown in the following figure and the red probe to U V and W wiring terminals respectively and check the readings of the multimeter point the red probe of the multimeter to the N bonding pa...

Page 283: ...Gree GMV6 HR DC Inverter VRF Units Service Manual 281 Models GMV VQ224WM C X GMV VQ280WM C X GMV VQ335WM C X Circuit diagram Layout of electrical appliance box Physical position...

Page 284: ...Gree GMV6 HR DC Inverter VRF Units Service Manual 282 Models GMV VQ400WM C X GMV VQ450WM C X Circuit diagram Layout of electrical appliance box Physical position...

Page 285: ...Gree GMV6 HR DC Inverter VRF Units Service Manual 283 Models GMV VQ504WM C X GMV VQ560WM C X GMV VQ615WM C X Circuit diagram Layout of electrical appliance box Physical position...

Page 286: ...not beep Anode of fuse 2 Cathode of fuse 7 The fuse is damaged and needs to be replaced if the multimeter does not beep CN1 4 CN1 6 The main board is normal if the multimeter does not beep CN12 8 CN1...

Page 287: ...ust superheat degree 5 Inspection of the minimum and maximum compression ratio Inspection of low pressure temperature of the low pressure sensor 1 Control of compressor output capacity 2 Conversion an...

Page 288: ...V6 HR DC Inverter VRF Units Service Manual 286 Models GMV VQ400WM C X GMV VQ450WM C X Circuit diagram Layout of electrical appliance box Physical position 1 High pressure sensor SP2 2 Low pressure sen...

Page 289: ...Inverter VRF Units Service Manual 287 Models GMV VQ504WM C X GMV VQ560WM C X GMV VQ615WM C X Circuit diagram Layout of electrical appliance box Physical position 1 High pressure sensor SP2 2 Low pres...

Page 290: ...he reading of the pressure gauge on the gas valve If the value shown on the wired controller is within the range of 10 of the reading of the pressure gauge the pressure sensor is normal Otherwise it i...

Page 291: ...cification of power source connected to mode switch is 220 240V 50 60Hz Use of power to the main control board Providing 220V AC power for the solenoid valve coil and electronic expansion valve coil G...

Page 292: ...er source connected to mode switch is 220 240V 50 60Hz Use of power to the main control board Providing 220V AC power for the solenoid valve coil and electronic expansion valve coil Generating the low...

Page 293: ...er source connected to mode switch is 220 240V 50 60Hz Use of power to the main control board Providing 220V AC power for the solenoid valve coil and electronic expansion valve coil Generating the low...

Page 294: ...er source connected to mode switch is 220 240V 50 60Hz Use of power to the main control board Providing 220V AC power for the solenoid valve coil and electronic expansion valve coil Generating the low...

Page 295: ...trical Inspection 1 Check the power cord from the power source to mode exchange box Use an ohmmeter of at least 500V DC to check whether the insulation resistance between each phase and the ground rea...

Page 296: ...e type of temperature sensors of mode exchange box are 20K The sensors are used to measure the temperature of the unit at different positions Circuit diagram Layout of electrical appliance box Physica...

Page 297: ...e sensors of mode exchange box are 20K The sensors are used to measure the temperature of the unit at different positions Circuit diagram Layout of electrical appliance box Physical position Models NC...

Page 298: ...of temperature sensors of mode exchange box are 20K The sensors are used to measure the temperature of the unit at different positions Circuit diagram Layout of electrical appliance box Physical posi...

Page 299: ...perature sensors of mode exchange box are 20K The sensors are used to measure the temperature of the unit at different positions Circuit diagram Layout of electrical appliance box Physical position Mo...

Page 300: ...rmometer to measure the temperature of the spot sensed by the temperature sensors 4 Disconnect the connecting terminal of the corresponding temperature sensor from the main board Use a multimeter to m...

Page 301: ...ecification The solenoid valve is used to control the on and off of the pipeline The valve of the unit is solid closed That is the valve is closed when it is inactive open when it is active Circuit di...

Page 302: ...the on and off of the pipeline The valve of the unit is solid closed That is the valve is closed when it is inactive open when it is active Circuit diagram Layout of electrical appliance box Physical...

Page 303: ...the on and off of the pipeline The valve of the unit is solid closed That is the valve is closed when it is inactive open when it is active Circuit diagram Layout of electrical appliance box Physical...

Page 304: ...the on and off of the pipeline The valve of the unit is solid closed That is the valve is closed when it is inactive open when it is active Circuit diagram Layout of electrical appliance box Physical...

Page 305: ...exchange box Remove the electrical appliance cover 2 check whether the connecting terminal of the solenoid valve is firm 3 Disconnect the corresponding valve s coil terminal from the main board and us...

Page 306: ...nic expansion balance valve for heating are 480pls The coil of them are 5 cores The electronic expansion valve is used to control the flow When the electronic expansion valve is closed the openness is...

Page 307: ...or heating are 480pls The coil of them are 5 cores The electronic expansion valve is used to control the flow When the electronic expansion valve is closed the openness is 0 pls the flow is stopped Ci...

Page 308: ...or heating are 480pls The coil of them are 5 cores The electronic expansion valve is used to control the flow When the electronic expansion valve is closed the openness is 0 pls the flow is stopped Ci...

Page 309: ...or heating are 480pls The coil of them are 5 cores The electronic expansion valve is used to control the flow When the electronic expansion valve is closed the openness is 0 pls the flow is stopped Ci...

Page 310: ...will click and vibrate obviously otherwise the electronic expansion valve coil or the main board needs to be replaced Step 2 Switch off the power of the mode exchange box disconnect the coil terminal...

Page 311: ...ications Description NCHS1D NCHS2D NCHS4D models adopt one piece of main board NCHS8D adopts two pieces of same main boards It is used for controlling the status of each load in the mode switch Circui...

Page 312: ...Description NCHS1D NCHS2D NCHS4D models adopt one piece of main board NCHS8D adopts two pieces of same main boards It is used for controlling the status of each load in the mode switch Circuit diagra...

Page 313: ...Description NCHS1D NCHS2D NCHS4D models adopt one piece of main board NCHS8D adopts two pieces of same main boards It is used for controlling the status of each load in the mode switch Circuit diagra...

Page 314: ...Description NCHS1D NCHS2D NCHS4D models adopt one piece of main board NCHS8D adopts two pieces of same main boards It is used for controlling the status of each load in the mode switch Circuit diagra...

Page 315: ...3 1 Power Specifications Description Use of power to the main control board Providing DC power for the electronic expansion valve coil Generating the low voltage DC power Circuit diagram Layout of ele...

Page 316: ...damaged 4 3 1 2 Electrical Inspection Check the power cable from the main switch board to the hydro box 1 Use an ohmmeter of at least 500V DC to check whether the insulation resistance between each ph...

Page 317: ...tions are used including 50K and 20K The sensors are used to measure the temperature of the unit at different positions Models NRQR16L A T NRQR30L A T Circuit diagram Layout of electrical appliance bo...

Page 318: ...thermometer to measure the temperature of the spot sensed by the temperature sensors 4 Disconnect the connecting terminal of the corresponding temperature sensor from the main board Use a multimeter t...

Page 319: ...nsion valve of the hydro box with the largest openness of 2000 pls and 5 core coil The electronic expansion valve is used to control the flow When the electronic expansion valve is closed the openness...

Page 320: ...econd half of the resetting process the valve core will click and vibrate obviously otherwise the electronic expansion valve coil or the main board needs to be replaced Step 2 Switch off the power of...

Page 321: ...ee GMV6 HR DC Inverter VRF Units Service Manual 319 4 3 4 Water Flow switch Specifications Description Models NRQR16L A T NRQR30L A T Circuit diagram Layout of electrical appliance box Physical positi...

Page 322: ...er flow switch can normally reset after being dialed 4 3 4 2 Electrical inspection The water flow switch used by the hydro box is normally open use a universal meter to adjust to the diode position pu...

Page 323: ...Gree GMV6 HR DC Inverter VRF Units Service Manual 321 4 3 5 Main Board Models NRQR16L A T NRQR30L A T Circuit diagram Layout of electrical appliance box Physical position...

Page 324: ...e switch the multimeter to the diode gear Point the black and red probes to the following positions to check if the main board is normal Black probe Red probe Symptom X2 3 X1 2 The main board is norma...

Page 325: ...e Unit Panel 5 1 1 1 1 Removing the maintenance port panel 1 Press the window in the bulkhead cover to open the window 2 Use a tool to press the buckle shown in the figure to rotate and open the windo...

Page 326: ...1 Use screwdriver to remove the screws shown in Fig 2 Remove the cover plate front panel component upper panel lower of the unit 3 screw cover plate front panel component upper panel lower 5 1 1 1 3...

Page 327: ...front panel component double fans left panel lower GMV VQ400 450 504 560 615WM C X 1 Use screwdriver to remove the screws as shown in Fig 2 Remove the cover plate front panel component double fans le...

Page 328: ...V VQ224 280 335 400 450WM C X 1 Use screwdriver to remove the screw as shown in electric box cover 2 Remove the electric box cover 3 screw electric box cover 5 1 1 2 2 GMV VQ504 560 615WM C X 1 Use sc...

Page 329: ...ing the ODU Main Board Preparations 1 Use the Power circuit breaker to switch off the Power of the GMV6 HR VRF system 2 Remove the unit s upper and bottom panels by referring to 5 1 1 Removing the Uni...

Page 330: ...ne master module in a refrigeration system set in the power off status The master module is defined as follows the ON position on the DIP identification is 0 the opposite direction is the status of 1...

Page 331: ...e main board Use a screwdriver to remove the screws marked by 2 on the main board Pull the side buckle 3 carefully to take out the main board from the unit Installation procedure 1 Complete the instal...

Page 332: ...master unit 6 System parameter setting After the engineering commissioning system parameters need to be set to be consistent with the previous system parameters Read ODU Function Setting for the setti...

Page 333: ...he old and new compressors do not place the compressor flat or place it upside down The compressor needs to be placed with an angle of less than 30 The lubricant of the compressor must not outflow fro...

Page 334: ...pliance box cover of the compressor must be intact WARNING Check whether the models of the new and old compressors on the nameplates are the same Check the sealing rubber blocks of components such as...

Page 335: ...nlet and outlet adopt copper coated steel pipes which require special welding rods and welding flux 3 Get welding tools ready Assess the nitrogen and acetylene quantity necessary for the welding accor...

Page 336: ...Step 4 Remove the sound insulation cover and sound insulation cotton 1 Remove the sound insulation cover A Applicable model GMV VQ224 280 335WM C X Use cross screwdriver to remove screw 4 Remove 1 up...

Page 337: ...ion cotton Step 5 Clean the electric components and pipe fixing block 1 When removing compressor wire temperature sensor and electric heater please make corresponding mark for re wiring after replacem...

Page 338: ...only the sealed scroll will hinder the refrigerant from being fully discharged Do not discharge the refrigerant too fast in no shorter than 12h Otherwise a large amount of lubricant will be discharged...

Page 339: ...ldering the welding point separate the pipe nozzle and the compressor nozzle for ten seconds to prevent the two nozzles from sticking together After removing the compressor check the oil quality If th...

Page 340: ...ground pour oil from the compressor exhaust port and use a beverage bottle or other transparent container with a volume of over 150 ml to store oil Note that the angle between the axial position of t...

Page 341: ...compressor is in good condition for further analysis Step 8 Remove the gas liquid separator and oil separator When the oil of system is contaminated please check the components of the unit including...

Page 342: ...560 615WM C X Warning Safety protection must be done during welding After unsoldering the welding point separate the pipe nozzle and the gas liquid separator nozzle for ten seconds to prevent the two...

Page 343: ...ctory to check the impurities Notes If the compressor is damaged and needs to be replaced the gas liquid separator must be replaced at the same time Regardless of whether the gas liquid separator cont...

Page 344: ...ced and ensure that pipe openings of the damaged components are sealed with tape or the like in time to ensure that they are in good condition for further analysis Collect the amount of compressor oil...

Page 345: ...e nitrogen to blow the main pipeline and focus on detecting and removing the oil passages Removing the oil return pipeline Checking the liquid pipe filter The liquid pipe filter is in the plate heat e...

Page 346: ...ng operation 3 When the compressor is connected to the power cables it must be connected according to the connection condition of the unit at the factory and based on the electrical circuit diagram Th...

Page 347: ...s liquid separator in a suitable position on the chassis connect the gas liquid separator inlet and outlet pipes and then connect the nitrogen port on the gas liquid separator connection pipe The nitr...

Page 348: ...whether the unit system leaks and focus on checking the service joints 3 Finally charge the system with high pressure nitrogen to keep the system pressure at above 25kgf Close the large and small unit...

Page 349: ...s such as filters need to be replaced The pipelines need to be cleaned by high pressure nitrogen Nearly all the parts are involved and nearly all the lubricant is discharged except for a small amount...

Page 350: ...the absolute pressure of 0 kgf cm2 and the gauge pressure is 1 kgf cm2 Only in this way can the water in the pipeline system be fully evaporated Recommended specifications of vacuum pump are as follow...

Page 351: ...refrigerant amount necessary for the module If the unit comprises multiple modules discharge only the refrigerant of the ODU before the maintenance Make corresponding adjustment via the startup commis...

Page 352: ...Gree GMV6 HR DC Inverter VRF Units Service Manual 350 Remove the fixing screws Remove the top cover sub assy and 4 buchkes...

Page 353: ...Units Service Manual 351 B Applicable to model GMV VQ400 450 504 560 615WM C X Remove the front and rear cover plate Remove the fixing screws a Applicable to model GMV VQ400 450WM C X b Applicable to...

Page 354: ...flat piece in sequence 2 Take off the blade Installation procedure 1 Use the power circuit breaker to switch off the power of the GMV6 HR VRF system install the blades on the motor shaft and check if...

Page 355: ...rring to 5 1 5 Removing and Installing Blades Removing procedure 1 Disconnect the fan connection port 2 Remove the blades by referring to the 5 1 5 Removing and Installing Blades 3 Remove the bolts as...

Page 356: ...R VRF system 2 Make sure that the unit pipeline system is free of refrigerant 3 Remove the unit s panel by referring to 5 1 1 Removing and Installing the Unit Panel 4 Remove the top cover assembly by...

Page 357: ...pliance box and remove the electrical appliance box 2 Notes Before removing the electric box of GMV VQ224 280 335 400 450WM C X model please unsolder and pull out the two refrigerant pipes of radiator...

Page 358: ...ing welding The nitrogen pressure is 0 5 0 1kgf cm2 relative pressure When heating do not burn the surrounding materials 8 Remove the condenser from the chassis Installation procedure 1 Place the new...

Page 359: ...oil 3 Screw Installation procedure 1 Install the new 4 way valve coil to the exact position 2 Tighten the screw with a screwdriver to ensure that the 4 way valve coil does not rotate 5 1 9 Removing an...

Page 360: ...e and pipes it should be filled with nitrogen for protection during welding Refer to Table 1 for nitrogen pressure Table 1 Nitrogen Pressure for Pipeline Assembly Welding Pipe diameter range mm Nitrog...

Page 361: ...mping block wrapped or rubber sleeve on the electronic expansion valve 2 Rotate the electronic expansion valve coil counterclockwise until it is released and then remove it 3 Cut the electronic expans...

Page 362: ...rcuit breaker to switch off the power of the GMV6 HR VRF system 2 Make sure that the unit pipeline system is free of refrigerant 3 Remove the unit s upper and bottom panels by referring to 5 1 1 Remov...

Page 363: ...hen buckle the front panel and tighten the screws 5 1 12 Removing and Installing Pressure Sensor Preparations 1 Use the power circuit breaker to switch off the power of the GMV6 HR VRF system 2 Remove...

Page 364: ...perature wire according to the original position 4 Fix the wires according to the original requirements Refer to the unit wiring diagram 5 Make sure that the components and cables are properly connect...

Page 365: ...em 2 Make sure that the unit pipeline system is free of refrigerant 3 Remove the unit s upper and bottom panels by referring to 5 1 1 Removing the Unit Panel Removing procedure 1 Remove the upper fixi...

Page 366: ...cedure 1 Use a tool to remove the solenoid valve coil 2 Use a pipe cutter to cut off the solenoid valve inlet and outlet pipes and remove the valve body Cut off point Cut off point 3 Use gas welding t...

Page 367: ...panel 5 1 16 Disassembly and assembly operation Preparation 1 Use the on site power supply circuit breaker to turn off the power of the GMV6HR multi VRF system 2 Ensure that there is no refrigerant in...

Page 368: ...ing wires are well connected 5 After checking that there is no problem install other parts buckle the front panel and fix the fixing screws 5 2 Mode Exchange Box 5 2 1 Primary disassembly steps 5 2 1...

Page 369: ...unplug all the plugs of main board 2 Use screwdriver to remove the screw that fixes mounting plate of electric components as shown in the figure 3 Take away the mounting plate 3 of electric component...

Page 370: ...paration 1 Cut off the power supply 2 Remove the electric box cover of unit please refer to section 5 2 1 2 Remove the Electric Box Cover Disassembly steps 1 Unplug all the plugs 1 of main board as sh...

Page 371: ...ction 5 2 1 2 Remove the Electric Box Cover 5 To remove the mounting plate of electric component of the unit please refer to section 5 2 1 3 Remove the Mounting Plate of Electrical Component 6 To remo...

Page 372: ...all the magnet valve coil to a correct position and use torque to tighten the screws that fix the magnet valve coil 5 Check whether the components and connecting wires are well connected 6 Install the...

Page 373: ...electronic expansion valve and take out the old electronic expansion valve NOTE When welding use a damp cloth to wrap the surrounding electronic expansion valve and important components 1 electronic...

Page 374: ...cover plate and tighten the screws NOTE The disassembly of other electronic expansion valves on the unit are all carried out according to the above steps 5 3 Hydro Box 5 3 1 Water discharge of hydro b...

Page 375: ...p cover 1 from the unit 1 top cover screw 5 3 2 2 Remove the front panel and rear panel of unit 1 Use screwdriver to remove the screws that fix front and rear panels 2 Remove the front panel 2 and rea...

Page 376: ...box cover screw 5 3 2 4 Remove the electric box 1 Before the removal cut off the power supply of unit and unplug all the plugs of main board 2 Use screwdriver to remove the screw that fixes electric...

Page 377: ...e joint 9 sealing plate screw 5 3 3 Disassembly and assembly operation of main board of hydro box Preparation 1 Cut off the power supply of unit system 2 Remove the top cover please refer to section 5...

Page 378: ...of electronic expansion valve Preparation 1 Cut off the power supply of unit system 2 Ensure that there is no refrigerant inside the pipeline system of unit 3 To remove top cover of unit please refer...

Page 379: ...on 5 3 2 2 Remove the Front Panel and Rear Panel of Unit 5 Please refer to section 5 3 1 Drain the hydro box 6 Remove the electric box cover please refer to section 5 3 2 3 Remove the Electric Box Cov...

Page 380: ...cloth to wrap the surrounding important components the welding point of plate heat exchanger is steel and copper welding pay attention to ensure the welding quality 1 screw 2 plate heat exchanger sub...

Page 381: ...3 2 1 Remove the Top Cover 4 Remove the panel of unit please refer to section 5 3 2 2 Remove the Front Panel and Rear Panel of Unit 5 Remove the electric box cover please refer to section 5 3 2 3 Rem...

Page 382: ...ersion Circle 200150060002 1 4 Axial fan blade 103002000007 1 5 Brushless DC Motor 1570412406 1 6 Nozzle for Adding Freon 06120012 2 7 One way Valve 071001060007 2 8 Filter 07218603 1 9 Electromagneti...

Page 383: ...0003060146 1 38 Front Panel 012073000245P 1 39 Sensor Sub assy 390002060061 1 40 Magnet Coil Electronic Expansion Valve UKV 4304413274 1 41 Magnet Coil Electronic Expansion Valve 07200200001102 1 42 M...

Page 384: ...r 07220016 1 63 Silencer 07245008 1 64 Compressor and Fittings 009001000190 1 65 Pressure Protect Switch 4602000911 1 66 Right Side Plate Sub Assy 017038060017P 1 67 Electric Box Assy 100002065119 1 6...

Page 385: ...120012 2 7 Electromagnetic Valve 43000073 1 8 Electromagnetic Valve 43000072 4 9 Nozzle for Adding Freon 061200101 1 10 Discharge Charge Valve 07334100002 3 11 4 way Valve 43000339 2 12 One way Valve...

Page 386: ...panel lower 012062000016P 1 43 Right panel 012167000014P 1 44 4 Way Valve Coil 07201006000204 1 45 4 Way Valve Coil 07201006000201 1 46 Magnet Coil electromagnetic valve 07200106000801 1 47 Magnet Co...

Page 387: ...sor 32218000008 1 65 Sensor Sub assy 390002060061 1 66 Right Side Plate Sub Assy 017038060026P 1 67 Electric Box Assy 100002065117 1 68 Terminal Board 422000060055 1 69 Patching board 300027060098 1 7...

Page 388: ...8 Electromagnetic Valve 43000055 1 9 Filter 07415200002 1 10 Electromagnetic Valve 43000072 4 11 Electromagnetic Valve 43044100144 2 12 Discharge Charge Valve 07334100002 3 13 Electronic Expansion Va...

Page 389: ...gnet Coil electromagnetic valve 07200106000802 1 48 Magnet Coil electromagnetic valve 07200106000803 1 49 Magnet Coil electromagnetic valve 07200106000807 1 50 Magnet Coil electromagnetic valve 072001...

Page 390: ...300027060098 1 75 Terminal Board 422000060004 1 76 Main Board 300027060136 1 77 Reactor 45000406000901 2 78 Filter Board 300020060006 2 79 Electric Box Assy 100002067747 1 80 Main Board 300027060076...

Page 391: ...ion Valve 072009000001 1 3 Filter 0741410000601 1 4 Electromagnetic Valve 43000072 1 5 Electronic Expansion Valve 43044100172 1 6 Electromagnetic Valve 43000073 2 7 Electromagnetic Valve 43044100144 1...

Page 392: ...ronic Expansion Valve UKV 4304413217 1 18 Magnet Coil electromagnetic valve 07200106000824 1 19 Magnet Coil electromagnetic valve 07200106000815 1 20 Magnet Coil electromagnetic valve 07200106000826 1...

Page 393: ...board 300023060022 1 15 Terminal Board 422000060004 1 16 Side plate sub assy 1 017110060029P 1 17 Magnet Coil Electronic Expansion Valve UKV 4304413251 1 18 Magnet Coil Electronic Expansion Valve UKV...

Page 394: ...1 3 Terminal Board 422000060004 1 4 Patching board 300023060022 1 5 Terminal Board 420001000019 1 6 Terminal Board 42011106 1 7 Filter 0741410000601 1 8 Electronic Expansion Valve 072009000001 1 9 Ele...

Page 395: ...1 Magnet Coil electromagnetic valve 07200106000816 1 22 Magnet Coil electromagnetic valve 07200106000817 1 23 Magnet Coil electromagnetic valve 07200106000818 1 24 Magnet Coil electromagnetic valve 07...

Page 396: ...3 Patching board 300023060022 1 4 Terminal Board 420001000019 1 5 Terminal Board 42011106 1 6 Electric Box Assy 100002067943 1 7 Bottom case 012261060005P 1 8 Electromagnetic Valve 43044100144 1 9 Fi...

Page 397: ...07200106000815 2 22 Magnet Coil electromagnetic valve 07200106000826 2 23 Magnet Coil electromagnetic valve 07200106000816 2 24 Magnet Coil electromagnetic valve 07200106000824 2 25 Magnet Coil electr...

Page 398: ...ker 4602800301 1 3 Main Board 300002060336 1 4 Main Board 300002060371 1 5 Terminal Board 422000060011 1 6 Terminal Board 42200006000401 1 7 Electric Box Assy 100002062065 1 8 Chassis Sub assy 0170000...

Page 399: ...15 Handle 200149060003 2 16 Top cover 012049060026P 1 17 Sensor Sub assy 390002060114 1 18 Temperature sensor 39000283 1 19 Temperature sensor 3900028301 1 20 Pressure maintaining valve 07333700052 1...

Page 400: ...witch of air conditioner 8 hours before starting operation so as to conduct preheating of crankcase of outdoor compressor 6 Check if outdoor unit is firmly installed if there is any faults please cont...

Page 401: ...plier for a locally approved solution Calculate the approximate volume of circulating water in the system The hydro box is not included Calculate the required amount of antifreeze according to the vol...

Page 402: ...freeze is used in accordance with local laws and regulations Antifreeze may be toxic and it is strictly forbidden to mix with domestic water If this hydro box is only used for making hot water the ant...

Page 403: ...871 2 934 10 82 75 0 506 81 1 811 2 945 9 78 43 0 53 82 1 754 2 955 8 74 35 0 554 83 1 699 2 964 7 70 5 0 579 84 1 645 2 974 6 66 88 0 605 85 1 594 2 983 5 63 46 0 631 86 1 544 2 992 4 60 23 0 658 87...

Page 404: ...779 1 998 126 0 492 3 195 36 9 382 2 03 127 0 48 3 198 37 9 003 2 062 128 0 467 3 2 38 8 642 2 094 129 0 456 3 203 39 5 997 2 125 130 0 444 3 205 41 7 653 2 185 131 0 433 3 207 42 7 352 2 215 132 0 42...

Page 405: ...67 3 861 2 766 28 319 2 0 195 68 3 729 2 781 27 300 0 206 69 3 603 2 796 26 282 2 0 218 70 3 481 2 811 25 265 5 0 231 71 3 364 2 825 24 249 9 0 245 72 3 252 2 838 23 235 3 0 259 73 3 144 2 852 22 221...

Page 406: ...115 0 8799 3 161 20 25 01 1 466 116 0 8562 3 165 21 23 9 1 503 117 0 8333 3 168 22 22 85 1 54 118 0 8111 3 171 23 21 85 1 577 119 0 7895 3 175 24 20 9 1 614 120 0 7687 3 178 25 20 1 65 121 0 7485 3 1...

Page 407: ...734 Exhaust temperature sensor 50k resistance voltage correspondence table including compressor top shell temperature sensor and air exhaust pipe temperature sensor Temperature C Resistance k Voltage...

Page 408: ...102 85 0 292 100 3 3147 2 478 10 98 006 0 306 101 3 22 2 496 11 93 42 0 319 102 3 1285 2 514 12 89 075 0 333 103 3 0401 2 531 13 84 956 0 348 104 2 9547 2 547 14 81 052 0 362 105 2 8721 2 564 15 77 3...

Page 409: ...6 0 994 134 1 3474 2 908 44 22 286 1 022 135 1 3155 2 916 45 21 425 1 05 136 1 2846 2 924 46 20 601 1 078 137 1 2545 2 932 47 19 814 1 107 138 1 2233 2 94 48 19 061 1 136 139 1 1969 2 947 49 18 34 1 1...

Page 410: ...2 36 2 11 2 7 50 32 19 7 35 2 24 1 7 74 33 20 2 34 2 33 0 7 99 34 20 7 33 2 43 1 5 94 35 21 2 32 2 53 2 8 50 36 21 7 31 2 64 3 8 77 37 22 3 30 2 75 4 9 04 38 22 8 29 2 86 5 9 32 39 23 4 28 2 98 6 9 61...

Page 411: ...1 834 27 307 0 242 29 1848 1 884 26 319 0 255 30 1897 1 937 25 332 0 268 31 1946 1 989 24 345 0 282 32 1996 2 042 23 359 0 297 33 2048 2 098 22 373 0 312 34 2100 2 153 21 388 0 328 35 2153 2 21 20 40...

Page 412: ...olute pressure kPA Voltage V Temperature C Absolute pressure kPA Voltage V 70 36 0 369 14 502 1 301 69 38 0 373 13 520 1 337 68 40 0 377 12 538 1 373 67 43 0 383 11 558 1 413 66 46 0 389 10 577 1 451...

Page 413: ...737 21 1493 3 283 34 230 0 757 22 1535 3 367 33 240 0 777 23 1577 3 451 32 250 0 797 24 1620 3 537 31 261 0 819 25 1664 3 625 30 272 0 841 26 1708 3 713 29 283 0 863 27 1754 3 805 28 295 0 887 28 1801...

Page 414: ...C X 380 415V 3N 50 60Hz 40 6 0 6 0 5 GMV VQ450WM C X 380 415V 3N 50 60Hz 40 6 0 6 0 5 GMV VQ504WM C X 380 415V 3N 50 60Hz 50 10 0 10 0 5 GMV VQ560WM C X 380 415V 3N 50 60Hz 50 10 0 10 0 5 GMV VQ615WM...

Page 415: ...Q1790WM C X 560 615 615 380 415V 3N 50 60Hz 50 50 50 10 0 10 0 10 0 10 0 5 10 0 5 10 0 5 GMV VQ1845WM C X 615 615 615 380 415V 3N 50 60Hz 50 50 50 10 0 10 0 10 0 10 0 5 10 0 5 10 0 5 GMV VQ1905WM C X...

Page 416: ...lied The engineering wiring should meet the requirements of IEC 60364 5 52 to ensure that the line voltage drop meets the requirements and the voltage is not lower than the lower limit of the nominal...

Page 417: ...Gree GMV6 HR DC Inverter VRF Units Service Manual 415 Appendix 5 Circuit Diagram GMV VQ224WM C X GMV VQ280WM C X GMV VQ335WM C X...

Page 418: ...Gree GMV6 HR DC Inverter VRF Units Service Manual 416 GMV VQ400WM C X GMV VQ450WM C X...

Page 419: ...Gree GMV6 HR DC Inverter VRF Units Service Manual 417 GMV VQ504WM C X GMV VQ560WM C X GMV VQ615WM C X...

Page 420: ...Gree GMV6 HR DC Inverter VRF Units Service Manual 418 NCHS1D...

Page 421: ...Gree GMV6 HR DC Inverter VRF Units Service Manual 419 NCHS2D...

Page 422: ...Gree GMV6 HR DC Inverter VRF Units Service Manual 420 NCHS4D...

Page 423: ...Gree GMV6 HR DC Inverter VRF Units Service Manual 421 NCHS8D...

Page 424: ...Gree GMV6 HR DC Inverter VRF Units Service Manual 422 NRQR16L A T NRQR30L A T Note Refer to the mark on the unit for the actual circuit diagram...

Page 425: ...V6 HR DC Inverter VRF Units Service Manual 423 Appendix 6 Refrigerant Flow for Each Operation Mode 6 1 GMV VQ224WM C X GMV VQ280WM C X GMV VQ335WM C X GMV VQ400WM C X GMV VQ450WM C X 6 1 1 Cooling Ope...

Page 426: ...Gree GMV6 HR DC Inverter VRF Units Service Manual 424 6 1 2 Heating Operation...

Page 427: ...Gree GMV6 HR DC Inverter VRF Units Service Manual 425 6 1 3 Main body Cooling...

Page 428: ...Gree GMV6 HR DC Inverter VRF Units Service Manual 426 6 1 4 Main body Heating...

Page 429: ...Gree GMV6 HR DC Inverter VRF Units Service Manual 427 6 2 GMV VQ504WM C X GMV VQ560WM C X GMV VQ615WM C X 6 2 1 Cooling Operation...

Page 430: ...Gree GMV6 HR DC Inverter VRF Units Service Manual 428 6 2 2 Heating Operation...

Page 431: ...Gree GMV6 HR DC Inverter VRF Units Service Manual 429 6 2 3 Main body Cooling...

Page 432: ...Gree GMV6 HR DC Inverter VRF Units Service Manual 430 6 2 4 Main body Heating...

Page 433: ...JF00304244...

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