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Gree Ultra Heat GMV-V72W/A-F, Service Manual

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Gree Ultra Heat GMV-V72W/A-F Service Manual Download Page 133

Ultra Heat GMV VRF Technical Service Manual                                                                                                    MAINTENANCE 

128 

 

 

 

 

Description of electric expansion valve:   

 

(2) Four-way valve: While this valve is normally running, the four copper pipes connected to it will 

suffer different temperature. When a unit switches to act the valve, you will feel obvious vibration and 

hear sound.     

 

 

Electric  expansion 
valve 

Electric  expansion 
valve of subcooler 

Here  is  the  position  of  a 
4-way  valve  within  a  unit.Do 
not touch it. The exhaust pipe 
transmits  high  temperature 
refrigerant  which  may  scald 
you. 

Summary of Contents for Ultra Heat GMV-V72W/A-F

Page 1: ...Ultra Heat GMV Multi VRF TECHNICAL SERVICE MANUAL R410A Heat Pump Series...

Page 2: ...0 4 ONSITE REVIEW OF DESIGN DRAWING 22 5 CONSTRUCTION ORGANIZATION PROCESS 23 PART 2 MATERIAL SELECTIONS 24 1 REQUIREMENT FOR SELECTING CONSTRUCTION MATERIALS 24 2 REQUIREMENT FOR SELECTING MAJOR MATE...

Page 3: ...ming the Air tightness Test 65 1 3 Precautions 65 2 VACUUMIZATION AND DESICCATION FOR THE SYSTEM 66 2 1 Requirements on the Vacuum Pump 66 2 2 Procedure and Precautions for Vacuumization and Desiccati...

Page 4: ...INSPECTION CHECKLIST OF THE DEBUG SYSTEM 158 3 DEBUG PARAMETER RECORD LIST 159 4 COMMON PARAMETER LISTS 160 4 1 R410A Refrigerant Pressure Saturation Temperature List 160 4 2 Resistance Temperature L...

Page 5: ...Software Setup and Uninstallation 214 3 4 Software Initial Usage and Unit Connection 220 4 VRF MONITORING SYSTEM DEBUG 223 4 1 Air Conditioner System Debug 223 4 2 Communication Debug between Gateway...

Page 6: ...PRECAUTIONS To prevent injury to the user or other people and property damage the following instructions must be followed Incorrect operation due to ignoring instruction will cause harm or damage The...

Page 7: ...e gas or combustibles near the air conditioner There is risk of fire or failure of product Use the correctly rated breaker or fuse There is risk of fire or electric shock Prepare for strong wind or ea...

Page 8: ...ed outlet for this appliance There is risk of fire or electrical shock Be cautious that water could not enter the product There is risk of fire electric shock or product damage Do not touch the power...

Page 9: ...is very sharp It can cause the injury such as cutting the finger Also the damaged fin may result in degradation of capacity When installing the unit in a hospital communication station or similar pla...

Page 10: ...erson should not carry the product if it weighs more than 44lbs 20kg Some products use PP bands for packaging Do not use any PP bands for a means of transportation It is dangerous Do not touch the hea...

Page 11: ...Ultra Heat GMV VRF Technical Service Manual UNIT INTRODUCTION 6 CHAPTER 1 INTRODUCTION TO BASIC FEATURES OF UNITS...

Page 12: ...parallel to serve as a system evaporator The circulation of air supply and air return of the IDU is performed to adjust the indoor temperature and humidity When an IDU is operating in heating mode all...

Page 13: ...cts a compressor s exhaust gas temperature for compressor control and protection 4 High pressure circuit breaker Protects a compressor by sending feedback signal to stop the system when the compressor...

Page 14: ...uction performance 25 Oil return valve 1 Oil return control for the compressor 26 Inlet temperature sensor of gas liquid separator Detects inlet temperature of gas liquid separator 27 Fusible plug Ope...

Page 15: ...od Inverter Inverter Operating Range 10 100 10 100 Refrigeration Oil Brand FV50S FV50S Oil Charge L 1 35 1 35 Fan Type Quantity Propeller 2 Propeller 2 Motor Output W 750 750 750 750 Starting Method I...

Page 16: ...il charge includes the total oil amount of outdoor units residual oil amount of compressor and oil separate tank When replacing the compressor or oil separate tank only the corresponding required oil...

Page 17: ...ing optional accessories Export Model Remark Manifold ODU ML01R For model selection refer to Pipe Selection IDU FQ01A A Remote control Receiver Board JS05 Applicable for air duct type IDUs Commissioni...

Page 18: ...enance the oil check valve can be used to extract lubricating oil samples which are further detected to analyze the oil quality in the system The oil check valve can also serve as the inlet for lubric...

Page 19: ...itioning engineering design and installation operators must abide by the safety requirement for preventing refrigerant leakage specified in local laws and regulations If such safety requirement is una...

Page 20: ...ge quantity Total refrigerant charge quantity in the system kg 2 Calculate the volume of maximum air conditioning space m Volume of air conditioning space m Length x Width x Height Note The length wid...

Page 21: ...ounted type Cassette type Adoption of ventilation system Choose ordinary ventilation system or building ventilation system Limitation in piping work Prepare for earthquake and thermal stress 8 UNIT OP...

Page 22: ...Ultra Heat GMV VRF Technical Service Manual INSTALLATION 17 CHAPTER 2 INSTALLATION...

Page 23: ...ogen is not filled into the refrigerant pipe or insufficient Nitrogen is filled before welding Pipes are more likely to be blocked air conditioning performance is reduced compressor wear is increased...

Page 24: ...maintained unit exhaust is not smooth which reduces the heat exchanging performance or even prevent the system from normal operation in addition the cold and hot air for heat exchange and the noise ma...

Page 25: ...cess based on the following principles 1 Drain pipes enjoy the highest priority Air ducts and pressure pipes should leave places for gravity pipes 2 Air ducts and small pipes should leave places for m...

Page 26: ...Ultra Heat GMV VRF Technical Service Manual INSTALLATION 21...

Page 27: ...more the excess is the lower the adjustment capacity of an air conditioning unit will be The difference of level between an ODU and an IDU and that between IDUs must be set within the designed range 2...

Page 28: ...ra Heat GMV VRF Technical Service Manual INSTALLATION 23 5 CONSTRUCTION ORGANIZATION PROCESS Above process is a general operation process which can be adjusted in practice according to local requireme...

Page 29: ...0A Refrigeration System Outer diameter mm inch Wall thickness mm Type 6 35 1 4 0 8 0 9 52 3 8 0 8 0 12 70 1 2 0 8 0 15 9 5 8 1 0 0 19 05 3 4 1 0 0 22 2 7 8 1 2 1 2H 25 40 1 1 1 2 1 2H 28 60 9 8 1 2 1...

Page 30: ...with intense magnetic field or strong interference it is necessary to use shielded wire NOTE All of the selected communication wire must be consistent with local laws and regulations 2 3 Power Cable...

Page 31: ...Therefore the ODU with excellent capacity and low noise is preferred in addition ODU should be installed in outdoor spaces instead of in bedrooms studies or meeting rooms In commercial areas ODU shou...

Page 32: ...e unit is located in a totally open space with no obstructions in four directions keep the distance between the unit top and wall at least 1500mm 59inch or above See Fig 1 When space is limited within...

Page 33: ...alculated In addition a proper type of ventilating duct is necessary To connect he static pressure ventilating duct to the ODU three basic parts are required ODU Canvas Steel plate ventilating duct Th...

Page 34: ...he grille from the top of the top case component and leave the top case b Put the canvas casing inside out 4 Cover one end of the canvas casing over the unit downward until the canvas end face is alig...

Page 35: ...as casing onto the unit through steel bar by using tapping screws c Pull up the canvas casing reversely and use the steel bar to press the canvas casing tightly onto the counter flange of the steel pl...

Page 36: ...tal supply air rate 2 Lifting method When carrying the suspended unit pass the ropes under the unit and use the two suspension points each at the front and rear Always lift the unit with ropes attache...

Page 37: ...e plastic packaging bag may suffocate children to death When carrying in Outdoor Unit be sure to support it at four points Carrying in and lifting with 3 point support may make Outdoor Unit unstable r...

Page 38: ...d When the foundation is built on a concrete floor crushed stones are not required But the foundation surface must be roughened Clear the oil stains crushed stones dirt and water in the reserved bolt...

Page 39: ...e bolt It may cause the unstable state of the outdoor settlement and may cause freezing of the heat exchanger resulting in abnormal operations Be sure to remove the MDF wood support of the bottom side...

Page 40: ...nit 2 Indoor unit 3 Connection pipe between indoor branchs Connection pipe between indoor branchs Connection pipe between indoor branch and indoor units Module1 2 SCHEMATIC DIAGRAM OF PIPING SEQUENCE...

Page 41: ...ngth 190 623 1 4 Difference between the pipe length from the first branch of IDU to the farthest IDU and the pipe length from the first branch of IDU to the nearest IDU 40 131 1 4 L10 L11 Equivalent l...

Page 42: ...the related technical requirement 3 When the maximum length of the main pipe from ODU to the first branch of IDU is 90m 295 1 4ft then adjust the pipe size Total rated capacity of ODU C Btu h Pipe bet...

Page 43: ...as per total capacity of downstream indoor unit s Please refer to the following table R410A refrigerant system Total Capacity of the Downstream Indoor Unit X Btu h Model Y type Branch Pipe C 68000 FQ...

Page 44: ...3 4 336000 X 41 3 1 5 8 19 05 3 4 5 Piping between branch and indoor unit a c d Rated capacity of indoor units X Btu h Size of connection pipe between indoor branch and indoor unit Gas pipe mm inch Li...

Page 45: ...minimum pipe length and bends In this way the performance of the unit can be maximized 3 The refrigerant pipe cannot affect air discharge and return of internal units The minimum distance between the...

Page 46: ...aling cap or adhesive tape 1 2 2 Pipe cleaning Cleaning with a piece of silk cloth wrap a thin steel wire with a piece of clean silk cloth Crumple the cloth into a lump with diameter larger than the p...

Page 47: ...act without any burr crack or wrinkle Requirements on pipe flaring are as follows 1 End faces of the copper pipe are smooth 2 Burrs and turn ups inside the pipe opening must be cleared 3 Install flari...

Page 48: ...The foot pedal must be tightened securely with the ladder Do not perform operations on the top of the ladder 1 3 3 Shaping and fixing of pipes When installing refrigerant pipes ensure that the direct...

Page 49: ...rtion Depth D A Gap between Pipes mm inch mm inch mm inch 6 35 1 4 6 0 24 0 05 0 21 0 002 0 008 9 52 3 8 7 0 28 12 7 1 2 15 8 5 8 8 0 32 0 05 0 27 0 002 0 01 19 05 3 4 10 0 39 22 2 7 8 25 4 1 28 6 1 1...

Page 50: ...on manifold installation Manifolds are used to divert refrigerant There are Y type manifold a and T type manifold b a b Requirements on manifold installation are as follows 1 Ensure that the manifold...

Page 51: ...ation See b a b 3 The length of a straight pipe between two manifolds cannot be less than 500 mm 19 7inch 4 The length of a straight pipe before the main pipe port of the manifold cannot be less than...

Page 52: ...the main inlet manifold from the welding point Fixing point 2 200 mm 7 88inch on the main branched pipe from the welding point Fixing point 3 250 mm 9 84inch on the branched pipe from the welding poin...

Page 53: ...he Y type manifold has an attached pipe used to adjust the diameter of different pipes If the pipe size on site does not match the size of the manifold junction use the pipe cutter to cut at the middl...

Page 54: ...e Perform an air tightness test and a vacuum test to the entire refrigerant pipe system after the construction is finished There must be a secure distance between pipes Pipes in different types must b...

Page 55: ...ngers External Diameter of the Pipe mm 25 4 31 8 25 4 31 8 inch 1 1 1 4 1 1 1 4 Distance between Horizontal Pipes mm 800 1000 1500 inch 31 1 2 39 3 8 59 Distance between Vertical Pipes mm 1500 2000 in...

Page 56: ...Bond the insulation material joints with special glue and then wrap them with plastic adhesive tape The width of the adhesive tape must be 50mm 1 97inch or more to prevent dewing 2 3 Other Requirement...

Page 57: ...than 1 when connecting the drain pipe to the IDU b When connecting the drain pipe to that of the IDU fix the pipes with the bands instead of using the glue to facilitate further maintenance c There is...

Page 58: ...inage to the largest extent and be as short as possible 3 If the water is discharged to the outdoor side it cannot drop to the outdoor ground directly 2 6 Requirements on Centralized Drainage for IDUs...

Page 59: ...special glue and then wrap them with electrical adhesive tape The width of the adhesive tape must be 50 mm 1 97inch or more to ensure secure connection 6 Use glue to bond the insulation material at th...

Page 60: ...ess of the rubber and plastic insulation layer is 35 mm 1 38inch For the air supply and return air pipe laid in an air conditioning room thickness of the rubber and plastic insulation layer is 20 mm 0...

Page 61: ...protection switch Note that generated overcurrent may include some amount of direct current Some installation site may require attachment of an earth leakage breaker If no earth leakage breaker is in...

Page 62: ...t connect earth line to any gas pipe liquid pipe lightening rod or telephone earth line If earth is incomplete it may cause an electric shock 3 The yellow green cable inside the air conditioning unit...

Page 63: ...or unit separately from the power supply Install the main switch that can interrupt all the power sources in an integrated manner because this system consists of the equipment utilizing the multiple p...

Page 64: ...he hole and thread the power cable through the hole Connect L1 L2 L3 of the power cable and the grounding cable to L1 L2 L3 on the power terminal block and the grounding screw next to the terminal blo...

Page 65: ...mmunication cable 3 INSTALLATION OF THE COMMUNICATION SYSTEM The CAN communication network is adopted for Ultra Heat GMV VRF system Manual DIP or identification on polarities of the communication powe...

Page 66: ...cation Cables The communication bus of indoor and ODUs must be connected in series instead of in star mode The last IDU of the bus shall be connected to a matching resistor placed in the package of th...

Page 67: ...ion cable and power cable must be laid separately to avoid interference The communication cable must be long enough to avoid joints Indoor units must be connected in series The last IDU D1 D2 and the...

Page 68: ...rolled by the two wired controllers cannot exceed 16 All connected IDUs must be in the same network The secondary wired controller can be set in start up or shut down mode 1 Press the FUNCTION button...

Page 69: ...ler 01 When two wired controllers control one or multiple IDUs the addresses of the controllers must be different The secondary wired controller address 02 does not support unit parameter setting exce...

Page 70: ...pes cannot be connected when the air tightness test is being performed The test pressure for R410A system is 4 0 MPa Use dry nitrogen as media for the air tightness test Increase the pressure slowly b...

Page 71: ...The system vacuum pump must be equipped with a check valve 2 2 Procedure and Precautions for Vacuumization and Desiccation 2 2 1 Procedure 1 Before vacuumization ensure that the stop valves of the ga...

Page 72: ...r unit s liquid valve and gas valve are completely closed Use vacuum pump to extract air inside indoor unit and connection pipe from the nozzles of liquid valve and gas valve of outdoor unit as shown...

Page 73: ...capacity collocation ratio C Quantity of included IDUs N 72 96 50 C 90 N 4 0 0 N 4 0 5 1 1 1 2 2 90 C 105 N 4 0 0 5 1 1 8 N 4 0 5 1 1 1 5 3 3 N 8 2 4 4 3 6 6 105 C 135 N 4 0 5 1 1 1 2 2 8 N 4 2 5 5 5...

Page 74: ...ressure gauge pipe to the detection opening of the liquid pipe and the medium gauge pipe to the vacuum pump Power on the vacuum pump to perform vacuumization and desiccation Step 2 After vacuumization...

Page 75: ...If there is no sufficient refrigerant and the calculated quantity of refrigerant is not fulfilled for the system record the current total perfusion quantity m m1 m2 m3 m4 mn 1 mn Quantity of refriger...

Page 76: ...d for the system Step 6 Remove the pressure gauge to finish refrigerant perfusion Because R410A is a mixture of refrigerant therefore it must be charged in a liquid form Otherwise unit will not work s...

Page 77: ...Ultra Heat GMV VRF Technical Service Manual COMMISSIONING OPERATION 72 CHAPTER 3 COMMISSIONING OPERATION...

Page 78: ...of this product and national and local security operation requirements Rule breaking operations are prohibited 2 PRECAUTIONS FOR THE USE OF REFRIGERANTS The Ultra Heat GMV serial unit is a refrigerat...

Page 79: ...by multiple systems 00000 The address DIP switch is used only when centralized control is required Otherwise the factory settings are used without being changed The address DIP switch is valid only wh...

Page 80: ...static pressure 50 Pa and high static pressure 82 Pa can be set according to the design of air ducts The setting methods are as follows Outdoor Fan Static Pressure Setting DIP Switch S2 DIP1 DIP2 Stat...

Page 81: ...8 0 0 0 1 9 1 0 0 1 10 0 1 0 1 11 1 1 0 1 12 0 0 1 1 13 1 0 1 1 14 0 1 1 1 15 1 1 1 1 16 5 On the DIP switch ON indicates 0 status and the opposite direction indicates 1 status indicates invalid statu...

Page 82: ...e set correctly otherwise units cannot be started up 3 1 6 DIP switch example 1 Explanation of DIP switch positions On the DIP switch ON indicates 0 status and the opposite direction indicates 1 statu...

Page 83: ...enable ODU controller and parts to work fluently Control CU function can be set as ON or OFF according to actual situation A8 Aftersales vacuuming mode Automatically enables all electronic expansion...

Page 84: ...n Code Display Mode Confirmation Display Mode Current Data Display Mode DI Blinking Step 4 When CU function displays press SW4 on the master unit then the master unit is displayed as follows LED1 LED2...

Page 85: ...LED2 LED3 Function Code Display Mode Confirmation Display Mode Current Data Display Mode NH Blinking Parameter value On Then users can select corresponding functions by pressing SW1 on the master unit...

Page 86: ...missioning phase of the current commissioning phase and follow steps This function is valid after step 5 For example if receiving a pause continue engineering commissioning signal during the process o...

Page 87: ...s follows LED1 LED2 LED3 Function Code Display Mode Confirmation Display Mode Current Data Display Mode A1 On OF Blinking A1 On On Blinking Next if On data is selected then press SW4 to confirm it The...

Page 88: ...uirements on engineering design installation complexity and high precise system control commissioning is mandatory after engineering installation Only a qualified unit can be delivered for use 2 REQUI...

Page 89: ...hat all required files and parameter records are prepared 3 2 Pre commissioning Check Installation environment check covers the heat exchange environment of unit and electromagnetic radiant components...

Page 90: ...h the system show that the high pressure value is 28 C 82 and the low pressure value is 27 C 81 The difference between the outdoor environment temperature and either pressure value is less than 5 C K...

Page 91: ...c box In the case of unit power off visually check whether any component in the electric box drops during transportation Then check whether any component or cable is loose or drops by hand For a large...

Page 92: ...struction comply with the design diagram 3 Is the rated capacity of the IDU ODU of a single refrigerating system within 50 135 4 Is the number of connected IDUs in a single refrigerating system within...

Page 93: ...n vent of IDU connected with soft connectors Is a plenum chamber installed for air return 27 Is the water pipe of IDU installed with an air exhaust vent 28 Is MASTER stuck to the wired controller or p...

Page 94: ...s case please confirm if the quantity is correct manually db On 02 On OC On System has confirmed the quantity of module Next step will start automatically 03_Confirm the quantity of IDU db On 03 On 01...

Page 95: ...tails can be found in relevant instruction manuals 3 3 2 1 Commissioning through Operation on Main Board of ODU In this debugging mode following debugging functions are included on the main board Step...

Page 96: ...light OC light There is no malfunction Next step will start automatically According to the above errors check or reset the unit then start debugging again Elimination methods of above error can be fo...

Page 97: ...SW4 confirmation button on the master unit to confirm it Unit will start next progress Debugging code Progress code Status code Progress LED1 LED2 LED3 Code Display status Code Display status Code Di...

Page 98: ...operation status of charging refrigerant amount manually then press SW4 confirmation button on the master unit to confirm it System will display as below and start next progress Debugging code Progres...

Page 99: ...or occurs during debugging in cooling mode db Light 09 Light XXXX d5 Light System detects error in indoor pipeline XXXX is IP of the faulted IDU 3s later error code d5 is displayed For example IDU no...

Page 100: ...lent mode setting method can also be seen in silent mode setting S1 of Technical service manual Step 4 In power off status of ODU set one module of ODU to master unit For details about the setting met...

Page 101: ...phase with confirm displayed a manual confirmation is required for entering the next commissioning step The number of commissioning units is displayed in 2 ODU Module quantity confirm and 3 IDU quant...

Page 102: ...t passed on the phase and troubleshooting is required after troubleshooting the unit automatically enters the next step For example the figure below in step 1 displays some malfunctions detected on th...

Page 103: ...s 9 and 10 are parallel steps one of the two steps will be selected according to the actual unit At last engineering commissioning is completed when is displayed on Debugging Complete Then press 2 Deb...

Page 104: ...oting methods during commissioning for later maintenance and query At last make a commissioning report and hand it over to users 3 3 4 Precautions to let users know after commissioning 1 For heat pump...

Page 105: ...Ultra Heat GMV VRF Technical Service Manual MAINTENANCE 100 CHAPTER 4 MAINTENANCE...

Page 106: ...ture sensor 2 Malfunction of liquid temperature sensor of sub cooler Malfunction of gas temperature sensor of sub cooler P malfunction of driving board of compressor Driving board of compressor operat...

Page 107: ...ure sensor of heat exchanger Malfunction of oil return temperature sensor 1 Clock of system is abnormal P Drive IPM module protection of compressor Malfunction of drive temperature sensor of compresso...

Page 108: ...us bar of drive of compressor Phase lacking of inverter compressor Malfunction of charging loop of driven of compressor Failure startup of inverter compressor AC current protection of inverter compres...

Page 109: ...U For example when E4 is displayed on the ODU find line E and column 4 in the above tables The fault is shown in the intersection of the line and column High exhaust temperature protection 2 ODU LEDS...

Page 110: ...20 Indoor unit 16 Fan protection 21 Indoor unit 17 Malfunction of discharge temperature sensor of compressor 2 22 Indoor unit 18 Malfunction of outlet temperature of gas liquid separator Phase lackin...

Page 111: ...ice Manual MAINTENANCE 106 17 Protection of fan AC current 18 Phase lacking of fan 19 Protection of compressor AC current 20 Phase lacking of compressor 21 Protection of PFC AC current 22 Phase lackin...

Page 112: ...U locating function to locate a faulty IDU or wired controller s corresponding IDU as follows when multiple IDUs are running in one place C01 Indoor project number and fault enquiry NOTE1 If the enqui...

Page 113: ...ting the main board and the compressor s drive board is loose If yes reconnect it 2 Check if the cable connecting the main board and compressor s drive board is broken If yes replace the cable 3 Check...

Page 114: ...The drive board s IPM module is damaged 2 The compressor s UVW cable is not connected properly 3 The compressor is damaged 1 Replace the compressor drive board 2 Reconnect the compressor s UVW cable...

Page 115: ...PM module protection 1 The fan drive board s IPM module is damaged 2 The fan s UVW cable is not connected properly 3 The fan is damaged 1 Replace the fan drive board 2 Reconnect the fan s UVW cable 3...

Page 116: ...Ultra Heat GMV VRF Technical Service Manual MAINTENANCE 111...

Page 117: ...Ultra Heat GMV VRF Technical Service Manual MAINTENANCE 112 2 System high pressure protection E1...

Page 118: ...Ultra Heat GMV VRF Technical Service Manual MAINTENANCE 113 3 System low pressure protection E3...

Page 119: ...Ultra Heat GMV VRF Technical Service Manual MAINTENANCE 114 4 System refrigerant lacking protection U4...

Page 120: ...Ultra Heat GMV VRF Technical Service Manual MAINTENANCE 115 5 Indoor unit anti freezing protection L5 6 Indoor unit water overflow protection L3...

Page 121: ...Ultra Heat GMV VRF Technical Service Manual MAINTENANCE 116 7 Temperature sensor fault 8 Pressure sensor fault...

Page 122: ...ults When the unit fails and halts first check the two digit nixie tube of the main board and fault table to find out the specific fault Then check and solve the fault according to the following metho...

Page 123: ...ult P5 and IPM module over current protection faults ODU fault P6 Attachment How to check whether the IPM module is damaged a Preparation Find a digital multi meter and switch it to the diode Remove U...

Page 124: ...adings of the multi meter PFC board method Use the black probe of the multi meter to touch the place marked by P in the follow picture and the red probe to touch places marked by L1 L2 and L3 respecti...

Page 125: ...Ultra Heat GMV VRF Technical Service Manual MAINTENANCE 120 PFC board 4 Variable frequency compressor drive board IPM over temperature fault ODU fault P8...

Page 126: ...l Service Manual MAINTENANCE 121 5 Recharging circuit faulty of the variable frequency compressor drive board ODU fault PF 6 High voltage protection for the DC bus of the variable frequency compressor...

Page 127: ...Ultra Heat GMV VRF Technical Service Manual MAINTENANCE 122 7 Low voltage protection for the DC bus of the variable frequency compressor s drive board ODU fault PL...

Page 128: ...creen are as follows Capacity DIP S1 Capacity Jumper cap U22 Jump Overflow detect terminal CN35 WATER DTCT Fan overload detect terminal CN36 OVC FAN 1 1 2 Restoring AP1 engineering parameters to facto...

Page 129: ...ively three times within 5 seconds The IDU and wired control will identify it as a master IDU setting command and show set master IDU success UC 5 seconds and highlight the Master icon respectively Me...

Page 130: ...meters are kept unchanged After replacing the main board of master indoor unit the master indoor unit must be reset 1 1 4 Cautions on replacement of slave IDU AP1 If the AP1 of a slave IDU needs to be...

Page 131: ...S1 at the bottom of the wired control to ON neglect switch 2 and connect the access control card interface to ports N and L or ports VCC and GND of the wiring terminal The following should be noted 1...

Page 132: ...normal ones Step 3 Check whether the electric expansion valves of ODUs and the 4 way valves act and whether the oil return pipes and oil balance valves 1 and 2 are normal Touch the pipelines next to t...

Page 133: ...our copper pipes connected to it will suffer different temperature When a unit switches to act the valve you will feel obvious vibration and hear sound Electric expansion valve Electric expansion valv...

Page 134: ...both sides of the valve flows Step 4 Test the IPM module of compressor drive board and PFC board to see whether it is normal 1 Disconnect the power supply Five minutes later remove the line of the fau...

Page 135: ...for the test method Step 4 Check the IPM module Refer to the preceding section for the test method 2 2 Compressor Replacement Step 1 Disconnect power supply Turn off the power switch of the ODUs and d...

Page 136: ...ase speed it is expected to release for 12 hours or more If too fast massive lubricant will be discharged with the refrigerant Make sure to mark the valves At the low pressure side refrigerant is rele...

Page 137: ...ystem parts If system oil is contaminated check unit parts including oil separator gas liquid separator and storage tank 1 Check oil separator Remove the oil separator For the removal procedure refer...

Page 138: ...ties or has faults or not 3 Check oil return pipe and oil balance pipe Remove oil return pipe and oil balance pipe and check oil volume and impurity Note Before replacing the faulty parts make sure to...

Page 139: ...ce Manual MAINTENANCE 134 Step 6 Clear pipeline system Check pipelines for abnormalities Charge nitrogen into the main pipeline and clear the pipeline system 1 Clear oil balance pipe 2 Clear oil retur...

Page 140: ...must be kept completely airtight GREE compressors use special lubricant FV50S whose moisture absorption capability is high Requirements on air tightness of these compressors are higher 2 Prepare other...

Page 141: ...smoothly flow through the gas separator Step 9 Install a new oil separator The original oil separator if is found to have no impurities or other objects can be used further more This part serves as a...

Page 142: ...g Control varies with compressors Inverse connection of the compressors may cause damage to units Step 11 System check 1 Check welding joints for abnormalities 2 Charge nitrogen into the system for le...

Page 143: ...trademark of the lubricant first Lubricant of other trademarks is not allowed 2 Open all valves and extract air for 30 minutes or longer 3 Connect a rubber hose to the low pressure measurement valve a...

Page 144: ...list 1 Measure and check the pressure of the entire refrigerant product against the saturation pressure temperature list Verify temperature parameter If the difference between the actual temperature a...

Page 145: ...1 L2 L3 and N The measuring result should be 0 V sometimes multimeters may be faulty and read false values Set a mark beside the power supply for warning 2 Measure compressor drive DC bus voltage betw...

Page 146: ...ode P cathode N output 450 VDC reactor s wiring terminal input AC power L1 L2 L3 Disconnect all lines of the drive board including compressor line communication line between the master unit and the dr...

Page 147: ...Ultra Heat GMV VRF Technical Service Manual MAINTENANCE 142 PFC board Drive board 4 Loosen the screws on the compressor drive board and PFC board as shown in the figure below...

Page 148: ...Ultra Heat GMV VRF Technical Service Manual MAINTENANCE 143 PFC board Drive board 5 Replace the compressor drive board and PFC board Before the replacement apply some silicone tape onto the IPM module...

Page 149: ...Ultra Heat GMV VRF Technical Service Manual MAINTENANCE 144 6 Install a new compressor drive screw and wire it PFC board...

Page 150: ...nt exists in the pipeline system and the power supply has been disconnected Step Diagram Operation Procedure 1 Remove the front panels Use a screwdriver to unscrew the upper and lower front panels Lif...

Page 151: ...screwdriver to unscrew the power line Remove the power line Remove the electric heating belt and discharge air temperature sensor Note Before removing the power line mark the colors of the line and c...

Page 152: ...ystem Heat the suction and discharge pipes by acetylene welding and then install the pipes During welding charge nitrogen into the pipes The pressure should be controlled within 0 5 0 1 kgf cm2 relati...

Page 153: ...alve Precondition No refrigerant exists in the pipeline system and the power supply has been disconnected Step Diagram Operation Procedure 1 Remove the front panels Use a screwdriver to unscrew the up...

Page 154: ...om being burnt during welding 4 Remove the four way valve Remove the four way valve from the pipeline 5 Install a new four way valve Put the valve in a proper position Weld the valve with the pipeline...

Page 155: ...d the screws Use a screwdriver to unscrew the upper and lower front panels Lift the front panels in order to take it out Note Both the upper panel and lower panel are fixed with two fasteners respecti...

Page 156: ...During welding charge nitrogen into the pipes The pressure should be controlled within 0 5 0 1 kgf cm2 relative pressure Note Avoid nearby parts from being burnt during welding Install the coil on the...

Page 157: ...ote Both the upper panel and lower panel are fixed with two fasteners respectively to connect to the side panels 2 Remove the electric box Disconnect internal and external connecting lines of the elec...

Page 158: ...iginal position and screw it Connect all lines 7 Check and install the front panels Check various parts and connecting lines If no problem is found hook the front panels and tighten the screws Gas liq...

Page 159: ...emove the pipes Note Avoid nearby parts from being burnt during welding 4 Remove the gas liquid separator Unscrew and remove the gas liquid separator 5 Install a new gas liquid separator Put the gas l...

Page 160: ...refrigerant exists in the pipeline system and the power supply has been disconnected Step Diagram Operation Procedure 1 Loosen the hooks at the bottom of the electric box and the screws Use a screwdri...

Page 161: ...the heat exchanging board and remove the support and board 5 Install a new heat exchanging board Screw the support of the heat exchanging board and fix the board onto the chassis Put the heat exchangi...

Page 162: ...ing water discharged freely 5 3 Pre Season Cautions 1 Check IDU and ODUs air inlets and outlets for blockage 2 Check whether they are properly earthed 3 Check batteries of the remote control 4 Check w...

Page 163: ...ECTION CHECKLIST OF THE DEBUG SYSTEM Visual inspection checklist of air conditioning equipment Item Problem Checked by Check time Refrigerating system Appearance of ODUs Appearance of IDUs Thermal ins...

Page 164: ...ng Number and capacity of running IDUs State parameter Unit Prestart 30min 60min 90min ODU Outdoor temperature F Power voltage V Frequency Hz Compressor current A Discharge temperature F System temper...

Page 165: ...22 0 2 72 39 45 4 39 2 9 12 132 27 38 100 4 23 20 336 49 29 20 2 2 83 41 05 5 41 0 9 40 136 34 39 102 2 23 77 344 75 28 18 4 2 95 42 79 6 42 8 9 69 140 54 40 104 0 24 36 353 31 27 16 6 3 07 44 53 7 44...

Page 166: ...0 605 55 131 4 456 2 544 115 239 0 66 3 161 5 23 63 46 0 631 56 132 8 4 294 2 566 116 240 8 0 642 3 165 4 24 8 60 23 0 658 57 134 6 4 139 2 586 117 242 6 0 625 3 168 3 26 6 57 18 0 686 58 136 4 3 99...

Page 167: ...235 26 78 8 14 36 1 686 87 188 6 1 497 3 001 147 296 6 0 292 3 237 27 80 6 13 74 1 722 88 190 4 1 451 3 009 148 298 4 0 286 3 238 28 82 4 13 16 1 758 89 192 2 1 408 3 017 149 300 2 0 279 3 24 29 84 2...

Page 168: ...153 3 0 381 48 118 4 7 745 2 379 112 233 6 0 9556 3 15 15 5 145 0 4 49 120 2 7 453 2 404 113 235 4 0 9295 3 153 14 6 8 137 2 0 42 50 122 7 173 2 429 114 237 2 0 9043 3 157 13 8 6 129 9 0 44 51 123 8 6...

Page 169: ...293 0 4088 3 234 18 64 4 27 39 1 393 82 179 6 2 339 2 954 146 294 8 0 3992 3 235 19 66 2 26 17 1 429 83 181 4 2 265 2 964 147 296 6 0 3899 3 237 20 68 25 01 1 466 84 183 2 2 194 2 974 148 298 4 0 380...

Page 170: ...114 8 20 601 1 078 107 224 6 2 715 2 595 14 6 8 342 83 0 094 47 116 6 19 814 1 107 108 226 4 2 6404 2 611 13 8 6 323 94 0 099 48 118 4 19 061 1 136 109 228 2 2 5682 2 626 12 10 4 306 23 0 104 49 120...

Page 171: ...138 280 4 1 2233 2 94 17 62 6 70 503 0 41 78 172 4 6 542 1 995 139 282 2 1 1969 2 947 18 64 4 67 338 0 427 79 174 2 6 3315 2 021 140 284 1 1694 2 955 19 66 2 64 333 0 444 80 176 6 1288 2 046 141 285 8...

Page 172: ...84 2 1848 268 1 884 26 14 8 319 46 3 0 255 30 86 1897 275 1 1 937 25 13 332 48 1 0 268 31 87 8 1946 282 2 1 989 24 11 2 345 50 0 282 32 89 6 1996 289 4 2 042 23 9 4 359 52 1 0 297 33 91 4 2048 297 2 0...

Page 173: ...2 3 93 4 39 2 912 132 2 0 887 60 140 3849 558 1 4 018 5 41 940 136 3 0 917 61 141 8 3932 570 1 4 106 6 42 8 969 140 5 0 947 62 143 6 4017 582 5 4 197 7 44 6 999 144 9 0 979 63 145 4 4103 594 9 4 288...

Page 174: ...465 1 33 8 830 120 4 1 957 54 65 2 89 12 9 0 475 2 35 6 857 124 3 2 011 53 63 4 94 13 6 0 485 3 37 4 884 128 2 2 065 52 61 6 99 14 4 0 495 4 39 2 912 132 2 2 121 51 59 8 104 15 1 0 505 5 41 940 136 3...

Page 175: ...3 993 26 14 8 319 46 3 0 935 30 86 1897 275 1 4 091 25 13 332 48 1 0 961 31 87 8 1946 282 2 4 189 24 11 2 345 50 0 987 32 89 6 1996 289 4 4 289 23 9 4 359 52 1 1 015 33 91 4 2048 297 4 393 22 7 6 373...

Page 176: ...ressure Protect Switch 4602000911 1 3 Diversion Circle 10474100002 2 41 Strainer 07415200002 1 4 Axial Flow Fan 10434100002 2 42 Electric Box Assy 100002003230 1 5 Fan Motor 15704119 2 43 Reactor 4500...

Page 177: ...Electric Expand Valve Fitting 4304413204 1 26 Electromagnetic Valve 43000072 4 64 Magnet Coil electromagnetic valve 4304000481 1 27 Electromagnetic Valve 43044100144 2 65 Magnet Coil electromagnetic...

Page 178: ...rminal Board 42018000558 1 16 Fusible plug 06332200001 1 54 Insulation Gasket 70415001 1 17 Filter 07218603 1 55 Wire Clamp 71015001 1 18 Electronic Expansion Valve 43044100173 1 56 Electric Box Assy...

Page 179: ...il electromagnetic valve 4304000456 1 35 Current Divider 07223439 1 73 Magnet Coil electromagnetic valve 4304000458 1 36 Screw Sub Assy 26904100016 2 74 4 way Valve Coil 4300040091 1 37 Temperature Se...

Page 180: ...Ultra Heat GMV VRF Technical Service Manual REMOTE CONTROL 175 CHAPTER 5 REMOTE CONTROL...

Page 181: ...hrough the software Gree Debugger is an effective intelligent management tool for air conditioning systems and also a tool for engineering setup and after sale debugging With Gree Debugger users can d...

Page 182: ...the Gree Debugger USB data line 40020082 A line connecting a PC with the converter over the USB interface COM interface board 30118015 This board serves to connect units with control PCs when they are...

Page 183: ...ts to a USB data line CAN interface When air conditioners work in CAN mode they are connected to the converter over this CAN interface This interface is not distinguished by polarity Thus the two cont...

Page 184: ...to the COM interface of an air conditioning unit at one end and to the CAN interface of a converter at the other end as shown in the following figure The air conditioning unit can be either an IDU or...

Page 185: ...EMOTE CONTROL 180 software package will be installed to the system without extra operation If it is not the first time to install Gree Debugger uninstall the old version before installing 1 Enter inst...

Page 186: ...Ultra Heat GMV VRF Technical Service Manual REMOTE CONTROL 181 2 Set software installation catalogue...

Page 187: ...stallation 4 Wait for the completion of installation progress Prompting intercept information of safety software might pop up at this time please set the installation procedure as released to ensure n...

Page 188: ...software successfully click the shortcut of VRF Debugging Software exe on desktop to enter main interface of debugging software Notice After installing the software if you keep failing to open the ab...

Page 189: ...topped Close the software compulsively open task manager enter progress selection column click user progress and find VRF Debugging Software exe VRF debugging software will be closed compulsively afte...

Page 190: ...Ultra Heat GMV VRF Technical Service Manual REMOTE CONTROL 185 3 Enter VRF Debugging Software exe directly and click delete 4 Choose delete item 5 Wait for the completion of uninstall...

Page 191: ...Ultra Heat GMV VRF Technical Service Manual REMOTE CONTROL 186 5 USING DEBUGGER 5 1 Manual for Initial Usage...

Page 192: ...network tree the system will generate network tree according to current equipment connection condition At this time if the equipment is not connected to the system just wait for a while then click ag...

Page 193: ...ssword 5 3 Main Interface It displays equipment connection information after logging in Serial port selection frame means choosing the corresponding serial port Click serial port connection open the s...

Page 194: ...Heat GMV VRF Technical Service Manual REMOTE CONTROL 189 5 4 Debugging Function 5 4 1 Basic information Click basic information to enter indoor and outdoor unit basic information of VRF unit to check...

Page 195: ...e user is controlling the software will ignore this limitation when the mode of indoor unit is conflicting with the main indoor unit it will adjust the operation mode automatically Heat recovery units...

Page 196: ...ce Manual REMOTE CONTROL 191 5 4 2 Error protection Click error protection selection to see indoor and outdoor error protection for VRF unit 5 4 3 ON OFF status Click ON OFF status button to enter ON...

Page 197: ...ting status are reserved 5 4 4 Indoor unit control The left page is selection method for the equipment The user can use network tree to select realted equipment for controlling choose the correspondin...

Page 198: ...nic expansion valve mode exchanger electronic expansion valve heating energy efficiency upper limit temperature setting quick heat energy efficiency temperature upper limit setting mode exchanger low...

Page 199: ...be displayed in listbox row by row for more error information please check in error protection interface If no errors occur it will display for more error information please check in error protection...

Page 200: ...The user click CONFIRM which indicates online outdoor unit quantity is consistent with actual installation enter the next schedule If the display is inconsistent with actual installation after checkin...

Page 201: ...pleted If the engineering debugging complete mark is effective it means the debugging is completed When unit debugging is completed and exiting debugging mode click DEBUGGING COMPLETED twice to empty...

Page 202: ...path for historical data of debugging software and record the last path set 5 4 8 Language switch Language switch function is available When starting the software the language will be selected accordi...

Page 203: ...y according the form of local time It is used to check historical status information of all or designated indoor units Click HISTORICAL DATA save all indoor and outdoor units data which the debugging...

Page 204: ...g software startup data is connected to current time Open historical file to select the file of INDOOR xls correspondingly to check historical data for outdoor unit 5 5 3 System maintenance 5 5 3 1 Hi...

Page 205: ...rmation status Project management Group management 4 Billing function Billing management Account management Billing query Detailed query Bill export 5 System function User management System setting Sy...

Page 206: ...Ultra Heat GMV VRF Technical Service Manual REMOTE CONTROL 201...

Page 207: ...Ultra Heat GMV VRF Technical Service Manual REMOTE CONTROL 202 Network 2 All indoor units in one system share one electric meter and all outdoor units share one electric meter...

Page 208: ...imum Total length of L1 cannot exceed 500m L2 L2 as shown in the figure is the CAN2 bus which is made up of gateways and master control outdoor units in the system total length of L2 cannot exceed 500...

Page 209: ...ystem can be connected to 16 gateways in maximum 4 The way of communication among units and gateway is the same with network 3 without billing function disconnecting electric meter 2 HARDWARE 2 1 List...

Page 210: ...eway is energized 3 Communication Interfaces RS485 3 RS485 communication interface RS485 2 RS485 communication interface RS485 1 RS485 communication interface CAN CAN communication interface ETHERNET...

Page 211: ...gateway receives data from CAN bus RS485 1 TX It flashes when the gateway sends data to RS485 bus RX It flashes when the gateway receives data from RS485 bus RS485 2 TX It flashes when the gateway se...

Page 212: ...tors light on then the system will restore ex factory settings Restoring ex factory settings will clear all device information saved in the system including IDU name group name IDU consumed electricit...

Page 213: ...y and VRF Monitoring System we can use repeaters for expansion For 485 communication bus set a optoelectronic isolated repeater every 800 m for electric meter add a optoelectronic isolated repeater ev...

Page 214: ...use shielded wire NOTE The length of the CAN2 bus connecting the gateway with master ODUs should not exceed 500 m 2 Communication between gateway with electric meter Type Size Applicable Standard Rem...

Page 215: ...onnecting way among air conditioning units and gateway must adopt series connection see Step 2 connect the gateway CAN interface G1 and G2 to the interface G1 and G2 at the terminal board of the corre...

Page 216: ...CAN bus RS485 2 TX It flashes when the gateway sends data to RS485 bus RX It flashes when the gateway receives data from RS485 bus POWER It lights on when the gateway is powered normally RUN It flashe...

Page 217: ...e Name Description Remark 1 Power interface Input AC220V 50HZ Output 12 30V DC 800mA Accompanied power supply of the repeater 2 Communication interface Line A of RS485 connected to R on 485 terminal a...

Page 218: ...ing System Part Quantity Supply Range Purpose USB Flash Disk 1 SC Used for installing VRF Monitoring System on a PC Installation guide 1 SC Providing instruction on the installation of VRF Monitoring...

Page 219: ...space of data CPU 2 GHz dual core processor in minimum 3 GHz or higher OS 32 bit or 64 bit Windows operation system Windows 7 in minimum Windows 10 3 3 Software Setup and Uninstallation Please uninst...

Page 220: ...Technical Service Manual REMOTE CONTROL 215 Step 4 Choose the file for installing the software Step 5 Confirm installation Step 6 Wait for the completion of installation progress In this case the sec...

Page 221: ...input server IP address in address field of browser for current unit input http localhost If you use other terminal device to access the server such as a router you shall input the IP address that ca...

Page 222: ...switching language 3 Administrator can turn on or turn off account registration function in system settings When account registration function is off new account cannot be registered This function is...

Page 223: ...edback information on script execution is not important 4 Repeat operation on the script is allowable but please do not operate several scripts at the same time to avoid any unforeseeable trouble 3 3...

Page 224: ...Ultra Heat GMV VRF Technical Service Manual REMOTE CONTROL 219 Step 3 Enter VRF Monitor System Setup Wizard Click Next Step 4 Select Remove option Step 5 Wait for the completion of uninstallation...

Page 225: ...ection When visiting the software home page will skip the log in page input the user name and password to enter the system NOTE Official authorization of the software shall be obtained before using it...

Page 226: ...er login system is available 3 Revise password click user name admin on the top right corner of the interface and Revise Password to enter the password revision interface After entering the system cli...

Page 227: ...top left of the page to add the machine to the project tree After completing the above operation you can use all the functions Relationship between actual installed IDU and the IDU in the system IDU n...

Page 228: ...ystem For details refer to part 1 security requirements_3 Function setting of ODUS in chapter 3 commissioning operation Step 2 Set IDU engineering number If there are conflict IDU engineering numbers...

Page 229: ...ne system share one electric meter the electric meter address must be consistent with ODU CAN2 address and for Network 2 All indoor units in one system share one electric meter and all outdoor units s...

Page 230: ...4 1 0 1 1 0 0 1 0 15 0 1 1 1 0 0 1 0 16 1 1 1 1 0 0 1 0 DIP of IDU electric meter i1 0 0 0 0 1 0 1 0 i2 1 0 0 0 1 0 1 0 i3 0 1 0 0 1 0 1 0 i4 1 1 0 0 1 0 1 0 i5 0 0 1 0 1 0 1 0 i6 1 0 1 0 1 0 1 0 i7 0...

Page 231: ...are will start up with the system PC Step 2 If the G module is connected directly to the computer using the network cable set IP address of PC to 192 168 0 x with x 2 And set address mask to 255 255 2...

Page 232: ...the tree structure of the connected device in the Net tree When the device is severely replaced go to System Maintenance and click Reset System After that we can already use the system to control the...

Page 233: ...lick Submit to create a node After creating a node select an IDU in the left hand Net tree and select a node in the Project tree Click Add to project tree to add the IDU to the Project tree Step 6 Con...

Page 234: ...ick Monitor Centralized to enter the centralized control page select the device to be controlled on the left select the control command on the right and click Send to send the control command Select A...

Page 235: ...s in a correct direction and power on the units Unit address is incorrect or replicate Correct the incorrect address settings Though lines and devices are normal information of devices of a floor is n...

Page 236: ...browser you cannot visit http localhost access to the software login page Possible cause The computer port 80 is occupied by other software Solution We recommend that you install the software using a...

Page 237: ...lient for looseness or damage and check whether Local connect is enabled 4 If the problem persists ping the server or the client The ping procedure is as follows Choose Start Run The Run window is dis...

Page 238: ...r of IDU is less than the actual installation quantity Due to conflicting engineering numbers between systems Solution Use the commissioning software to re set the IDU engineering number under the G m...

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