Gree GMV MTAC VRF Series Service Manual Download Page 103

Page: 103 / 117

Gree GMV MTAC VRF for North America

3.3 Circuit Diagram

GMV-12WP/A-T(U)

4 Removal of Parts

4.1 Key Parts

Photo

Name

Function

compressor

Core part of air conditioning

system. It sucks low temperature

and low pressure gas, compress it

to high temperature and high

pressure gas, and then discharge

it.

Electronic expansion

valve

Throttling device. It transforms

high pressure refrigerant liquid

into low pressure steam.

4-way valve

It changes the flow direction of

refrigerant for switching between

cooling and heating.

Summary of Contents for GMV MTAC VRF Series

Page 1: ...GMV MTAC VRF for North America GC201908 I Capacity 12kBtu h Rated Frequency 60 Hz...

Page 2: ...1 3 Unit Control Functions 10 2 Wired Controller 11 2 1 Control Panel 11 2 2 Installation and Removal 14 3 Remote Controller 17 4 Monitoring Software 19 4 1 Function Introduction 19 4 2 Connection of...

Page 3: ...ndoor Branches 69 5 4 Dimension of Pipe between Indoor Branches 70 5 5 Dimension of Pipe between Indoor Branch and IDU 70 6 Installation of Connection Pipe 71 6 1 Flaring Process 71 6 2 Vacuum Pumping...

Page 4: ...4 2 Removal of Key Parts 100 5 Common Maintenance 108 5 1 Vacuum Drying for the System 108 5 2 Fill and Charge Refrigerant 109 5 3 Airtightness Test 109 6 Exploded View of Unit and Parts List 111...

Page 5: ...Gree GMV MTAC VRF for North America 1 PRODUCT...

Page 6: ...sed greatly SEER of GMV 12WP A T U is up to 15 5 HSPF of GMV 12WP A T U is up to 9 5 2 New generation CAN bus communication Due to the latest communication method CAN Bus Communication system s anti i...

Page 7: ...r46 Outdoor57 Refrigerant charge volume Kg 0 8 oz 28 2 Power supply 208V 230V 60Hz Rated power input Cooling kW 1 4 Heating kW 1 1 Unit Dimensions W D H mm 1069 500 406 inch 42 1 16 19 11 16 16 Dimens...

Page 8: ...condition 2 No height difference between indoor unit and outdoor unit 3 Short connection pipe If the three conditions above have changed the cooling and heating capacity will change correspondingly a...

Page 9: ...of cooling capacity 2 Correction factor of heating capacity 4 3 3 Correction Factor of Pipe Length and Height Difference Symbol description Hp Height difference in case indoor unit is below outdoor un...

Page 10: ...nsor Axial flow finned heat exchanger Electronic expansion valve Symbol In cooling the low temperature and low pressure refrigerant gas from each indoor heat exchanger will be merged and inhaled by th...

Page 11: ...Gree GMV MTAC VRF for North America 7 CONTROL...

Page 12: ...a signal to main board Main board will pass this signal to controller where the error will be displayed and stop unit from working 2 High low pressure sensor is used to test unit s high low pressure a...

Page 13: ...Cooling operation 2 Heating operation 3 Drying operation 4 Operation procedure is the same as that of cooling operation 5 Fan operation 6 The EXV of the indoor unit closes in fan mode so that there i...

Page 14: ...ions 1 3 1 Control Functions of Outdoor Unit 1 Include the following contents 2 Compressor capacity output 3 Compressor start up control 4 Outdoor fan control 5 Defrosting control 6 Heating EXV contro...

Page 15: ...America 11 4 Heat 5 Fan 6 Heating temperature compensation 7 Anti freezing 8 Air swing 9 Drainage pump 10 IDU EXV 11 Static pressure level 2 Wired Controller 2 1 Control Panel NO Symbols Instructions...

Page 16: ...e zone will display FAP 6 Cooling mode 7 Dry mode 8 Fan mode 9 Heating mode 10 When inquiring or setting project number of indoor unit it displays NO icon 11 Floor Heating mode When Heating and Floor...

Page 17: ...ts 32 Save status of indoor unit 33 It indicates the current wired controller is the slave wired controller address of wired controller is 02 34 Memory status The indoor unit resumes the original sett...

Page 18: ...ttention to the following items 1 Before installation please cut off the power for indoor unit 2 Pull out the two core twisted pair from the installation hole on wall and then pull this wire through t...

Page 19: ...ion wire to satisfy installation requirements If caliber of the communication cord is too large which causes difficulty in leading or sticking the cord according to above point 2 and point 5 strip som...

Page 20: ...Gree GMV MTAC VRF for North America 16 One wired controller controls multiple indoor units simultaneously Two wired controllers control multiple indoor units simultaneously...

Page 21: ...off the unit 2 TURBO Set turbo function 3 MODE Set operation mode 4 Set up down swing status 5 I FEEL Set I FEEL function 6 TEMP Switch temperature displaying type on the unit s display 7 Set health...

Page 22: ...on or turn off the unit 2 FAN Set fan speed 3 Set temperature and time 4 MODE Set operation mode 5 Set quiet function 6 Set health function and air function 7 Set left right swing status 8 Set up dow...

Page 23: ...urces property and management Gree Commissioning Tool Kits can monitor and control the 2nd generation of Gree Multi VRF User can monitor and control units by monitoring the computer This software is a...

Page 24: ...conditioning communication into computing communication Gree Commissioning Tool Kits CD ROM DG40 33 A C 36400000003 Include Gree debugger monitoring software USB driver and USB converter configuring s...

Page 25: ...to USB will be on 5 When converter is under HBS data transferring mode the function LED of HBS to USB will be on 6 USB interface connect USB data wire 7 CAN interface When converter is under CAN comm...

Page 26: ...ed for the commissioning tool kits One is 1 meter s long and the other is 5 5 meters long They are only different in length One end of the wire shall connect with air conditioner s communication inter...

Page 27: ...s function has greatly saved the time to track problem cause and resolved the difficulty of problem reproduction 5 Applicable to multiple series models and users Gree Commissioning Tool Kits is applic...

Page 28: ...click the file Launcher exe For the first time to use Gree Commissioning Tool Kits install these programmes Net Framework 4 0 USB Data Converter Access Driver necessary for versions below OFFICE 2007...

Page 29: ...America 25 4 4 1 3 Installation Process 1 Install Net Framework 4 0 If your computer has installed Net Framework 4 0 or versions above there s no need to install again Otherwise click Install Net Fra...

Page 30: ...Gree GMV MTAC VRF for North America 26 Click and select I have read and accept the license terms Then click Install Installation is in progress...

Page 31: ...America 27 Click Finish to complete the installation 2 Install Access Driver Before operating Gree commissioning software please first install Access Driver necessary for versions below OFFICE 2007 C...

Page 32: ...Gree GMV MTAC VRF for North America 28 Click Next Tick I accept the terms in the License Agreement and then click Next...

Page 33: ...Gree GMV MTAC VRF for North America 29 Click Browse to change the default folder to the expected one or click Install to continue the installation Installation is in progress...

Page 34: ...erica 30 Click Ok to complete the installation 3 Install Gree Debugger Before installing Gree debugger make sure that your computer is installed with Net Framework 4 0 or versions above Then click Ins...

Page 35: ...Gree GMV MTAC VRF for North America 31 Click Browse to select installation folder If no change is needed for the folder click Next to continue the installation Click Next...

Page 36: ...Gree GMV MTAC VRF for North America 32 Installation is in progress Click Close to complete the installation...

Page 37: ...onverter Driver If USB converter driver is already installed in your computer this part can be skipped Otherwise click Install USB Converter Driver Then the following installation window will be shown...

Page 38: ...onverter If converter baud rate is needed to be set then converter configuring software must be installed Click Install Gree USB Data Converter Then select the setup language You can choose Chinese si...

Page 39: ...Gree GMV MTAC VRF for North America 35 Tick I accept the agreement Then click Next to continue installation Click Browse to select your expected installation folder Click Next to continue...

Page 40: ...Gree GMV MTAC VRF for North America 36 Click Browse to change folder Click Next to continue If you want to create s desktop shortcut tick Creat a desktop icon Then click Next to continue...

Page 41: ...r North America 37 Destiniation location folder and additional task will be shown in the next step If you need to change any of it please click Back If not click Install to start installation Installa...

Page 42: ...nish to complete the installation 4 4 2 Data Monitoring Gree Debugger Start up Gree Debugger On the original interface user can select language and units system Click OK to confirm the defaulted langu...

Page 43: ...Gree GMV MTAC VRF for North America 39 Select language Select system of units...

Page 44: ...unicate normally with correct COM and protocal then you may click Connect to enter the interface of numbers Otherwise connect in accordance with the connection diagram shown below COM selection the se...

Page 45: ...s is to select the communication method of your units Currently CAN is applicable to the units After the selection click Connnect If units can communicate normally with computer then the interface of...

Page 46: ...the dividing lines As to the display zone of outdoor modules information it can show information of only one module and hide information of others two modules are defaulted to be shown Menu bar can be...

Page 47: ...Project Debugging Click icon of Debug on the menu bar and the interface will be switched to project debugging where auto debugging will be started from up to down and from left to right Note Debugging...

Page 48: ...continue debugging or not Click icon and relevant information will be shown for your reference Click Close to close the pop up For No 3 Confirm ODU Basic Module NO and No 4 Confirm IDU NO the current...

Page 49: ...ng debugging a click on Break can stop debugging Click Start to resume debugging and then debugging will be finished step by step For No 10 ODU Valves Check Before Startup there are Back and Skip butt...

Page 50: ...gs System Settings Project Number Conflict In case there is project number conflict in indoor units other functions will be shielded Then this parameter needs to be set in order to eliminate the confl...

Page 51: ...m or Select Inverted to select none of them After selection the current values of the corresponding parameters will be displayed in the zone of settings Click Set and then click in the pop up dialog b...

Page 52: ...Gree GMV MTAC VRF for North America 48 4 4 5 Other Functions 1 Capture screen Click icon of Capture Screen to print the interface If you want to open the interface click Open...

Page 53: ...ick icon of Open Data Folder on the menu bar to open database folder 3 Conversion of pressure value Click icon of Others on the menu bar and then click Display Settings to select High Low Pressure Val...

Page 54: ...erica 50 displayed on the interface will be temperature Select Pressure and the pressure parameter displayed on the pressure interface will be pressure Refrigerant type will affect the pressure parame...

Page 55: ...multiple systems Click icon of Others on the menu bar and click Database Save Settings to select which system that needs to save database Because there is a large quantity of data in a network that co...

Page 56: ...tabase should be set before the software starts monitoring see below interface Click Change database saving path and click Browse to change the saving path Click Rebuild Database to rebuild the databa...

Page 57: ...units or the mainboard of wired controller according to actual needs HBS CAN and RS485 of the converter can be switched by buttons Press the button SET on the converter to realize the conversion amon...

Page 58: ...Gree GMV MTAC VRF for North America 54 Step 2 In the pop up window select Device Manager in the left column and then find Port COM and LPT in the right column Click its...

Page 59: ...Gree GMV MTAC VRF for North America 55 Step 4 Right click USB Serial Port COM6 and then click Properties The dialog box of properties will then pop up Step 5 Then click Port Settings in the dialog box...

Page 60: ...Gree GMV MTAC VRF for North America 56 Step 6 Click Advanced and then a new dialog box will pop up Find the Serial Enumerator in the miscellaneous options and cancel the tick Click OK to exit...

Page 61: ...face automatically Ex factory defaulted baud rate unit bps AC is connected with Baud rate of air conditioner interface Baud rate of USB interface CAN 20000 50000 self adaptive 115200 HBS 57600 38400 R...

Page 62: ...America 58 Select the needed communication serial port and language in the System Settings Select the function that is to be set and the corresponding baud rate refer to the look up table in the Conv...

Page 63: ...Gree GMV MTAC VRF for North America 59 If you want to restore ex factory settings click Default to restore the default settings Click Get to get the current setting details of converter...

Page 64: ...Gree GMV MTAC VRF for North America 60 Switchover of Software Languages...

Page 65: ...Gree GMV MTAC VRF for North America 61 INSTALLATION...

Page 66: ...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 or even hind...

Page 67: ...short circuited thus affecting the air conditioning performance 17 The ODU is improperly installed The ODU is difficult to be maintained unit exhaust is not smooth which reduces the heat exchanging pe...

Page 68: ...apes 2 2 Condensate Water Pipe 1 Pipes that can be used for air conditioner drainage include water supplying UPVC pipe PP R pipe PP C pipe and HDG steel pipe 2 All relevant certificates and quality te...

Page 69: ...elded wire 2 5 Power Cable Only copper conductors can be used as power cables The copper conductors must meet relevant national standard and satisfy the carrying capacity of unit 2 6 Hanger Rod and Su...

Page 70: ...d discharge Make sure there is no obstacle at the air inlet and air outlet If there is any obstacle please remove it 3 The installation site shall be able to withstand the weight of outdoor unit and c...

Page 71: ...directions with two sufficient ropes In order to avoid excursion from the center the angel of ropes must be smaller than 40 during hanging and moving A B C Unit mm inch Model A B C GMV 12WP A T U 106...

Page 72: ...built in 5 Installation of Refrigerant Pipeline 5 1 Allowable Length and Height Difference of Connection Pipe Y type branch joint is adopted to connect indoor and outdoor units Connecting method is s...

Page 73: ...nection method Gas pipe mm inch Liquid pipe mm inch GMV 12WP A T U 12 7 1 2 6 35 1 4 5 3 Selection of Indoor Branches Select indoor branches according to the total capacity of downstream indoor units...

Page 74: ...y of downstream indoor units C Btu h Pipe mm inch Liquid pipe mm inch C 19000 12 7 1 2 6 35 1 4 19000 C 48500 15 9 5 8 9 52 3 8 48500 C 76400 19 05 3 4 9 52 3 8 5 5 Dimension of Pipe between Indoor Br...

Page 75: ...t allowed 3 When laying the pipe be careful not to distort it Radius of bending parts should be over 200mm 8inch Note that pipes cannot be repeatedly bent or stretched otherwise the material will get...

Page 76: ...ed forcibly 3 Use torque wrench to twist on the flared nut tightly until the wrench gives out a click sound Hold the handle of wrench and make it at right angle to the pipe as in Fig 14 1 Use sponge t...

Page 77: ...piping diagram of GMV 12WP A T U According to customer requirement or space limit outlet pipe can be installed from the front right or rear side 6 1 4 Installation of Y type Branch 1 Y type Branch 2...

Page 78: ...8 3 When wrapping the tape the later circle should cover half of the former one Don t wrap the rape too tight otherwise the insulation effect will be weakened 4 After wrapping the pipe apply sealing m...

Page 79: ...2 1 The refrigerant amount charged before delivery doesn t include the amount that needs to be added to indoor units and the connection pipeline 2 Length of connection pipe is decided on site Therefor...

Page 80: ...ation must be performed by qualified technicians in accordance with local laws regulations and this user manual 2 Use air conditioner specialized power supply and make sure that it is consistent with...

Page 81: ...power cord of outdoor unit and communication wire There are two wiring diagrams for communication wires of indoor outdoor units and remote monitor 1 Real line method 2 Broken line method Please selec...

Page 82: ...ed during carry or transportation process 6 Calculate the required added refrigerant charging volume according to the length of pipe of system and pre charge the refrigerant If refrigerant can t be ad...

Page 83: ...ularly 00 16 displays the quantity of indoor unit identified by the system CL means the amount of indoor unit is very little amount of indoor unit 2 at this moment all buttons are invalid the system c...

Page 84: ...ton to confirm manually that the preheat time has reached 8 hours Then start next step Note Compressor may get damaged if it is started without 8 hours of preheat time 08 oC Display circularly Compres...

Page 85: ...ant can be added in this process through the L VALVE 15_ Cooling debugging 15 AC Display circularly Debugging for cooling mode If no malfunction occurs for 50min when compressor is running then the sy...

Page 86: ...C 104 126 F If ambient temp is low and many IDUs are turned on the high pressure will be lower 5 System low pressure C F When ambient temp in cool mode is 25 35 C 77 95 F the low pressure value is 0...

Page 87: ...same with the actual number No communication error 16 Drainage system Indoor unit can drain water out completely and smoothly Condensate pipe has no backward slope of water Water of outdoor unit can b...

Page 88: ...Gree GMV MTAC VRF for North America 84 MAINTENANCE...

Page 89: ...otection o4 IDU startup failure o5 IDU overcurrent protection o6 IDU current detecting circuit error o7 IDU non synchronism protection o8 IDU drive communication error o9 Communication error of IDU ma...

Page 90: ...m H1 Driving board of fan operates abnormally uniform P2 Voltage protection of driving board power of compressor uniform H2 Voltage protection of driving board power of fan uniform P3 Reset protection...

Page 91: ...istribution of IP address C3 Communication malfunction between main control and inverter fan driver Status Error Code Content Error Code Content A0 Unit waiting for debugging AP Debugging confirmation...

Page 92: ...heit qJ Dual heat source water emptying q8 Low temperature protection correction value for discharge qy Working mode of compressor heating zone q9 Defrost mode setting 2 Troubleshooting Troubleshootin...

Page 93: ...oor unit well E liminate obstacles and sundries Measure the circumstances of fan motor and signal input Check whether the indoor swing blade is open completely Measure the circumstances of swing motor...

Page 94: ...r unit well Eliminate obstacles and sundries Measure the circumstances of fan motor and signal input Check whether the indoor swing blade is open completely Measure the circumstances of swing motor an...

Page 95: ...an operate Cover the panel for outdoor unit well Eliminate obstacles and sundries Measure the circumstances of fan motor and signal input Check whether the indoor swing blade is open completely Measur...

Page 96: ...Check whether plug of sensor is connected with socket correctly Confirm whether the plug is connected correctly Replace main board of outdoor unit YES NO Measure whether the output value DC voltage fo...

Page 97: ...in board Replace compressor and liquid gas separator YES NO Work normally 9 Reset protection for drive module of compressor drive PFC protection for compressor malfunction of drive temperature sensor...

Page 98: ...Gree GMV MTAC VRF for North America 94 11 Desynchronizing protection for inverter compressor 12 Failure startup for inverter compressor...

Page 99: ...Gree GMV MTAC VRF for North America 95 13 Loop malfunction of driven charging for compressor 14 Malfunction of memory chip for inverter compressor...

Page 100: ...96 15 Overcurrent protection for inverter compressor IPM module protection phase lacking of inverter compressor 16 High pressure protection for driven DC bus bar of compressor low pressure protection...

Page 101: ...Gree GMV MTAC VRF for North America 97 17 AC current protection for inverter compressor 18 Communication malfunction between main contoller and driver of inverter compressor...

Page 102: ...line 3 2 Main Electric Parts Name Photo Function introduction Filter plate It main effect is to eliminate the interference of power for protecting unit s anti interference capability and prevent the i...

Page 103: ...onditioning system It sucks low temperature and low pressure gas compress it to high temperature and high pressure gas and then discharge it Electronic expansion valve Throttling device It transforms...

Page 104: ...lation 4 2 Removal of Key Parts 4 2 1 GMV 12WP A T U Series Unit Removal operation for panel Remark Before removing the panel please make sure that the unit is disconected with the power Process Photo...

Page 105: ...right side and rear panel with screwdriver Then remove the top cover 5 Remove rear panel and grille Loose the screws fixing the rear panel and grille with screwdriver Then remove the rear panel and gr...

Page 106: ...mpressor Remark Before removing the compressor please make sure that there s no refrigerant inside the pipeline and the power is disconnected Process Photo Operation Instruction 1 Remove wiring cover...

Page 107: ...e burn out other parts Loose screws fixing the power cord with screwdriver Conenct the power cord well again Note When connecting the power cord make marks for different color power cords and correspo...

Page 108: ...lding process do not let flame burn out other parts Remival operation for eletronic expansion valve Remark Before removing the electronic expansion valve please make sure that there s no refrigerant i...

Page 109: ...do not let the flame burn out other parts Removal operation of gas liquid separator Remark Before removing the gas liquid separator please make sure that there s no refrigerant inside the pipeline of...

Page 110: ...make sure that the unit is disconected with the power Process Photo Operation Instruction 1 Remove water pump and screw fixing the drainage pipe sub assy Loose the power cord for the water pump and th...

Page 111: ...Remove screws fixing the electric box with a screwdriver and then remove the electric box cover 2 Remove main board Pull the wires of main board Remove the screws fixing the main board and then remove...

Page 112: ...is reached to 0 1MPa or above If not there may be gas leakage Please perform the leakage inspection again If there s no gas leakage please vacuum pump for another 2h 4 If the required vaccum degree ca...

Page 113: ...duct pipe 3 Confirm that the gas valve and liquid valve for outdoor unit is at off status 4 When the unit hasn t been turned on open the governing valve for the liquid charging tank and then charge re...

Page 114: ...n and then check the gas leakage Big leakage may be found out Step 2 Increase pressure slowly to 1 5MPa stop for 5min to check the airtightness Small leakage may be found out Step 3 Increase pressure...

Page 115: ...Pressure Protect Switch 46020006 1 2 Pressure Sensor 430044000015 1 3 Cut off Valve 07304100015 1 4 Strainer 0721212101 1 5 4 Way Valve 430004032 1 6 Pressure Sensor 430044000016 1 7 Chassis Assy 209...

Page 116: ...0150060011 1 21 Strainer 0741520000201 1 22 Condenser Assy 011002060511 1 23 Cabinet Assy 000006060026 1 24 Axial Flow Fan 10333002 1 25 Brushless DC Motor 1501308522 1 26 Main Board 300027060516 1 27...

Page 117: ...JF00304109...

Search results

Summary of Contents for GMV MTAC VRF Series

Reviews:

Related manuals for GMV MTAC VRF Series

Brands by name

Popular brands

Gree GMV MTAC VRF Series, Service Manual

Search results

Summary of Contents for GMV MTAC VRF Series

Reviews:

Related manuals for GMV MTAC VRF Series

Brands by name

Popular brands