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Related Manuals for Gree GMV MTAC VRF Series
Summary of Contents for Gree GMV MTAC VRF Series
- Page 1 GMV MTAC VRF for North America (GC201908-I) Capacity: 12kBtu/h Rated Frequency: 60 Hz...
- Page 2 CONTENTS PRODUCT ........................2 1 Product List ......................2 2 Product Features ....................2 2.1 General Introduction ..................... 2 3 Specifications ......................3 3.1 Outdoor Unit ......................... 3 3.2 Operation Range ......................4 4 Product Capacity Correction ................4 4.1 Instruction of Product Capacity Correction ..............4 4.2 Capacity Code ......................
- Page 3 2.6 Hanger Rod and Support ....................65 3 Installation of Outdoor Unit ................65 3.1 Check before Installation .....................65 3.2 Selection of Installation Site ..................65 3.3 Carrying and Installing Outdoor Unit ................66 3.4 Installation Notices ......................66 3.5 Fixing and Damping of Unit ..................66 3.6 Outline Dimension and Position of Installation Hole ............67 3.7 Installation Space Requirement ...................67 4 Installation of Electronic Expansion Valve Assy (unit with external EXV) ..
- 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 PRODUCT...
- Page 6 (1) Super high energy efficiency. The system adopts all DC motor, which greatly improves efficiency. The energy efficiency for Gree all DC unit is increased 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.
- Page 7 Gree GMV MTAC VRF for North America (6) Intelligent PID capacity regulation. With the independently developed PID capacity regulation technology, units are able to control the indoor ambient temperature more quickly and reduce the fluctuation of room temperature. (7) Complete protection.
- Page 8 Gree GMV MTAC VRF for North America outdoor units are at a same level and with no connection pipe. Supplementary refrigerant needs to be charged according to actual circumstance. 3.2 Operation Range Cooling Outdoor temperature: -5~48°C (23~118.4°F) Heating Outdoor temperature: -20~27°C(-4~80.6°F) 4 Product Capacity Correction 4.1 Instruction of Product Capacity Correction...
- Page 9 Gree GMV MTAC VRF for North America 4.3.2 Correction Factor of Indoor and Outdoor Temperature (1) Correction factor 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 unit(m/feet).
- Page 10 Gree GMV MTAC VRF for North America Below table shows the capacity variance ratio for 100% full load in standard working condition (thermostat setting is 16°C(61°F ) for cooling and 30°C(86°F ) for heating). Hp(m) Hp(m) 10 20 30 40 50 60 70 80 90 100 110 120130140150...
- Page 11 Gree GMV MTAC VRF for North America CONTROL...
- Page 12 Gree GMV MTAC VRF for North America CONTROL 1 Units’ Control 1.1 Schematic Diagram of Units’ Control (1) Interpretation on the schematic diagram 1) High pressure switch is used to identify system’s high and low pressure. When pressure is too high, the switch will break off and send a signal to main board. Main board will pass this signal to controller, where the error will be displayed, and stop unit from working.
- Page 13 Gree GMV MTAC VRF for North America 1.2 Operation Flow Chart 1.2.1 Operation Flow Chart of Indoor Unit (1) Cooling operation. (2) Heating operation. (3) Drying operation. (4) Operation procedure is the same as that of cooling operation. (5) Fan operation.
- Page 14 Gree GMV MTAC VRF for North America 1.2.2 Operation Flow Chart of Outdoor Unit (1) Cooling operation. (2) Heating operation. 1.3 Unit Control Functions 1.3.1 Control Functions of Outdoor Unit (1) Include the following contents. (2) Compressor capacity output. (3) Compressor start-up control.
- Page 15 Gree GMV MTAC VRF for North America (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 Symbols Instructions Up and down swing function...
- Page 16 Gree GMV MTAC VRF for North America Symbols Instructions Left and right swing function It's valid under Save mode and displays during setting process Temperature lower limit for Cooling: Limit the minimum temperature value under Cooling or Dry mode Temperature upper limit for Heating: Limit the maximum...
- Page 17 Gree GMV MTAC VRF for North America Symbols Instructions Health function, Indoor unit optional function Reserved function Out function Outdoor unit defrosting status Gate-control function Shielding status Child Lock status One wired controller controls multiple indoor units Save status of indoor unit...
- Page 18 Gree GMV MTAC VRF for North America 2.2 Installation and Removal 2.2.1 Installation Dimensions 12.7 26.8 inch 4.41 0.87 0.09 0.14 0.16 0.20 0.50 0.94 1.06 1.18 3.31 2.2.2 Installation Method Above is the simple installation process of wired controller; please pay attention to the following items: (1) Before installation, please cut off the power for indoor unit.
- Page 19 Gree GMV MTAC VRF for North America (5) Tidy up the lines in slot on the back of the panel, and then bundle the front panel of wired controller to its soleplate and the installation is completed. NOTICE! If the wire size of the selected communication line is too large, you can peel some sheath layer of communication wire to satisfy installation requirements.
- Page 20 Gree GMV MTAC VRF for North America One wired controller controls multiple indoor units simultaneously. Two wired controllers control multiple indoor units simultaneously.
- Page 21 Gree GMV MTAC VRF for North America 3 Remote Controller (1) Remote controller YAP1F Button name and function introduction Button name Function ON/OFF Turn on or turn off the unit TURBO Set turbo function MODE Set operation mode Set up&down swing status...
- Page 22 Gree GMV MTAC VRF for North America Button name Function Set timer on function Set left&right swing status Set fan speed Set temperature and time (2) Remote controller YV1L1 Button name Function ON/OFF Turn on or turn off the unit Set fan speed ▲/▼...
- Page 23 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 an efficient tool for the intelligent air conditioning management as well as installation and after-sales service and commissioning.
- Page 24 Gree GMV MTAC VRF for North America into computing communication. This part is made up of Gree USB data converter and USB data wire. The 3rd part is air conditioners, including outdoor units, indoor units and the connection wires. If connection wire is not long enough, it’s OK to connect via the patching board of the commissioning tool kits.
- Page 25 (8) HBS interface: When HBS converter is under HBS communication mode, connect air conditioner’s HBS data interface. HBS interface exhibits no polarity (This interface is not yet available for Gree debugger and the monitoring software). (9) RS485 interface: When RS485 converter is under RS485 communication mode, connect air conditioner’s RS485 data interface.
- Page 26 CAN interface of Gree USB converter. As shown below, the wire can be connected to the communication interface of outdoor unit or the communication interface of indoor unit: 4.4 Software Introduction...
- Page 27 Gree Commissioning Tool Kits is applicable to air conditioning system that comsists of multiple series and models. Later, it will be developed to cover all series of Gree central air conditioners, such as multi VRF, centrifugal chiller, screw type chiller, ground source heat pump units, modular units, fan coiled units, close control units, etc.
- Page 28 Put the CD into the CD-ROM. If it’s automically running, then the following display will be shown. Or double-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), Gree Debugger.
- Page 29 Gree GMV MTAC VRF for North America 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 Framework 4.0”. Extracting files.
- Page 30 Gree GMV MTAC VRF for North America Click and select “I have read and accept the license terms”. Then click “Install”. Installation is in progress.
- Page 31 Gree GMV MTAC VRF for North America 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). Click “Install Access Driver”.
- Page 32 Gree GMV MTAC VRF for North America Click “Next”. Tick “I accept the terms in the License Agreement” and then click “Next”.
- Page 33 Gree GMV MTAC VRF for North America Click “Browse” to change the default folder to the expected one, or click “Install” to continue the installation. Installation is in progress.
- Page 34 GMV MTAC VRF for North America 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 “Install Gree Debugger”. Click “Next”.
- Page 35 Gree GMV MTAC VRF for North America 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 Installation is in progress. Click “Close” to complete the installation.
- Page 37 Gree GMV MTAC VRF for North America (4) Install USB Converter 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 (5) Install Gree USB Data Converter. 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 ”simplified”, Chinese “traditional” or English.
- Page 39 Gree GMV MTAC VRF for North America 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 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 Gree GMV MTAC VRF for North America 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. Installaiton is in progress.
- Page 42 Click “Finish” 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 language and units system and start up the software.
- Page 43 Gree GMV MTAC VRF for North America Select language. Select system of units.
- Page 44 Gree GMV MTAC VRF for North America If units you want to monitor are already connected, and able to communicate 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.
- Page 45 Gree GMV MTAC VRF for North America Protocal selection: This 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 numbers will be shown soon. Otherwise, “Connecting” will be shown.
- Page 46 Gree GMV MTAC VRF for North America There are several display zones on this interface. You can hide devices information and system information by clicking devices information icon and system icon . Display zones of indoor unit information and errors can be dragged up and down at 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).
- Page 47 Gree GMV MTAC VRF for North America monitoring. 4.4.3 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 Gree GMV MTAC VRF for North America Click “Start” to enable the debugging function. Then debugging will be started up automatically. indicates that debugging is in progress while indicates debugging is completed. If “OK” button is displayed, it means user needs to judge whether to continue debugging or not.
- Page 49 Gree GMV MTAC VRF for North America completed unless problem is solved (after problem is solved, step without “OK” button will switch to the next step automatically, otherwise user needs to click “OK” to continue). Click icon relevant information detected in this step will be displayed for your reference in order to solve problems.
- Page 50 Gree GMV MTAC VRF for North America 4.4.4 Control Units Click icon of “Setting” on menu bar and select parameter settings, which include “Gateway Settings”, “IDU Settings”, “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 conflict)”...
- Page 51 Gree GMV MTAC VRF for North America Tick the indoor units that need setting in the IDU selection zone or you may click “Select All” to select all of them 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.
- Page 52 Gree GMV MTAC VRF for North America 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 Gree GMV MTAC VRF for North America (2) Search for database folder. Click 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...
- Page 54 Gree GMV MTAC VRF for North America 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 parameter displayed on the interface.
- Page 55 Gree GMV MTAC VRF for North America (4) Database saving of 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...
- Page 56 Gree GMV MTAC VRF for North America (5) Change database saving path and rebuild database. Change of database saving path and rebuilding of database should be set before the software starts monitoring (see below interface). Click “Change database saving path” and click “Browse” to change the saving path.
- Page 57 LEDs. NOTICES! If it’s the first time your PC uses Gree USB data converter, in order to prevent Gree USB data converter from being mistaken by your computer as other devices and make sure your mouse can work well, it is necessary to turn off the Serail Enumerator of computer after Gree USB data converter is connected.
- Page 58 Gree GMV MTAC VRF for North America 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 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 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 Gree GMV MTAC VRF for North America (2) Usage of converter configuring software: When the converter is working, hold the button “SET” for 5 sec. Function LED will be flickering, indicating that the converter has enter the baud rate setting mode. Then you can use the converter configuring software to set the baud rate of converter.
- Page 62 Gree GMV MTAC VRF for North America 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 “Converter Setup”. Then click “Set”.
- Page 63 Gree GMV MTAC VRF for North America 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 Switchover of Software Languages.
- Page 65 Gree GMV MTAC VRF for North America INSTALLATION...
- Page 66 Gree GMV MTAC VRF for North America INSTALLATION 1 Engineering Installation Preparation and Notice 1.1 Installation Notice Personnel and property safety are highly concerned during the entire installation process. Installation implementation must abide by relevant national safety regulations to ensure personnel and property safety.
- Page 67 Gree GMV MTAC VRF for North America Installation Problem Possible Consequence Insufficient refrigerant circulating in the system decreases the cooling performance of the air conditioner. Long-term operation The refrigerant pipe leaks. under such circumstance may cause an overheating compressor or even damage the compressor.
- Page 68 Gree GMV MTAC VRF for North America 2.1 Refrigerant Piping (1) Material requirement: Dephosphorization drawing copper pipe for air conditioners. (2) Appearance requirement: The inner and outer surface of pipe should be smooth without pinhole, crack, peeling, blister, inclusion, copper powder, carbon deposition, rust, dirt or severe oxide film, and without obvious scratch, pit, spot and other defects.
- Page 69 Gree GMV MTAC VRF for North America 2.4 Communication Cable and Control Cable NOTICE! For air conditioning units installed in places with strong electromagnetic interference, shielded wire must be used as the communication cables of the IDU and wired controller, and shielded twisted pairs must be used as the communication cables between IDUs and between the IDU and ODU.
- Page 70 Gree GMV MTAC VRF for North America typhoon and earthquake. (3) Please keep the unit away from inflammable, explosive and corrosive gas or waste gas. (4) Make sure the location has space for heat exchange and maintenance so that unit can operate reliably with good ventilation.
- Page 71 Gree GMV MTAC VRF for North America or corrugated rubber damping pad shall be applied between the unit and foundation. 3.6 Outline Dimension and Position of Installation Hole When carrying the outdoor unit, hang the unit in four directions with two sufficient ropes. In order to avoid excursion from the center, the angel of ropes must be smaller than 40º...
- Page 72 Gree GMV MTAC VRF for North America Allow for wall finishing Allow for floor finishing Dimension Min.(mm/inch) Min. (mm/inch) Max(mm/inch) No Accessories 6.4(1/4) 6.4(1/4) — With Subbase 45(1-3/4) 89(3-1/2) 127(5) With Lateral Duct 19(3/4) 6.4(1/4) — If more than one accessory is to be used, use the maximum dimension. If the wall thickness is more than 350mm(13-3/4in.) - (A +6.mm4(1/4in.)), a sleeve extension must be used.
- Page 73 Gree GMV MTAC VRF for North America 5.2 Dimension of Pipe (Main Pipe) from ODU to the 1 Indoor Branch Dimension of pipe from ODU to the 1 indoor branch will be determined by the dimension of outdoor connection pipe.
- Page 74 Gree GMV MTAC VRF for North America 5.4 Dimension of Pipe between Indoor Branches Select pipe between indoor branches according to the capacity of downstream indoor units; if the capacity exceeds that of the outdoor unit, capacity of outdoor unit prevails.
- Page 75 Gree GMV MTAC VRF for North America Rated capacity of IDU C(Btu/h) Gas pipe (mm/inch) Liquid pipe (mm/inch) Φ19.05 Φ9.52 48000<C≤55000 (Φ3/4) (Φ3/8) Φ22.2 Φ9.52 55000<C≤96000 (Φ7/8) (Φ3/8) NOTICE! If the distance between IDU and its nearest branch is over 10m(33feet), then the liquid pipe of IDU (rated capacity ≤17000Btu/h) shall be enlarged.
- Page 76 Gree GMV MTAC VRF for North America (4) In case that direct bending will open cracks to the pipe, first use sharp cutter to cut the insulating layer, as shown in Fig. 12. Do not bend the pipe until it is exposed. When bending is done, wrap the pipe with insulating layer and then secure it with adhesive tape.
- Page 77 Gree GMV MTAC VRF for North America 6.1.3 Outdoor Pipe Connection Twist the flared nut on the connection pipe of outdoor valves. Twisting method is the same as for indoor pipe connection. During engineering installation, the connection pipe inside the unit must be wrapped by insulation sleeve.
- Page 78 Gree GMV MTAC VRF for North America Branch shall be isolated by insulating material that can bear 120°C (248°F) or even higher temperature. The attached foam of branch cannot be taken as insulating material. 6.1.5 Thermal Insulation for Pipeline (1) For multi VRF system, every copper pipe should be labeled so as to avoid misconnection.
- Page 79 Gree GMV MTAC VRF for North America 6.2 Vacuum Pumping, Refrigerant Adding Do not purge the air with refrigerants but use a vacuum pump to vacuum the installation! There is no extra refrigerant in the outdoor unit for air purging! 6.2.1 Vacuum Pumping...
- Page 80 Gree GMV MTAC VRF for North America NOTICE! Liquid pipe that is within 20m(65-5/8feet) doesn’t need to be added with refrigerant. First confirm that there is no leakage from the system. When compressor is not working, charge additional R410a with specific amount to the unit through the filling opening of the liquid pipe valve of the outdoor unit.
- Page 81 Gree GMV MTAC VRF for North America 7.1 Wiring Diagram (1) Connection of power cord and communication wire Separate power supply for Indoor and Outdoor. GMV-12WP/A-T(U): The wiring diagram for power cord of outdoor unit and communication wire. There are two wiring diagrams for communication wires of indoor/outdoor units and remote monitor: Real line method.
- Page 82 Gree GMV MTAC VRF for North America 7.2 Power Cable Wire Gauge and Circuit Breaker Selection Max Fuse Min. Circuit Max Ckt, Bkr Size/Disjoncteur Model Power supply Size/Fusible Max. Ampacity Max. (A) 208V/230V~ GMV-12WP/A-T(U) 60Hz 8 Debugging of Unit After the initial installation is finished and the main board of outdoor unit is replaced, it must perform debugging.
- Page 83 Gree GMV MTAC VRF for North America 8.2 Debugging of Unit Description of test operation procedures and main board display of ODU. GMV-12WP/A-T(U) Description of each stage of debugging progress Debugging code — Code meaning and operation method Progress Code Display status System is not debugged, hold main board’s SW3 button for...
- Page 84 Gree GMV MTAC VRF for North America Description of each stage of debugging progress Debugging code — Code meaning and operation method Progress Code Display status System detects error on indoor components. XX means the project code of IDU with error, e.g. no.1 IDU has d5 and d6 errors, meanwhile no.3 IDU displays error d6 and d7, then...
- Page 85 Gree GMV MTAC VRF for North America Description of each stage of debugging progress Debugging code — Code meaning and operation method Progress Code Display status Ready for units to start debugging. Press main board’s SW3 12/AP Display circularly button to confirm startup of debugging. 2s later, main board...
- Page 86 Gree GMV MTAC VRF for North America 8.3 Parameters Reference Value for the Normal Operation of Unit Parameter Debug item Unit Reference name Outdoor °C(°F ) — temperature When compressor starts, discharge temp in cool mode is within 70~105°C (158~221°F) and at least 10°C (50°F) higher than Compressor the high pressure saturation temp.
- Page 87 Gree GMV MTAC VRF for North America Parameter Debug item Unit Reference name Communication Communication Number of IDUs detected by software is the same with the — parameters data actual number. No communication error. Indoor unit can drain water out completely and smoothly.
- Page 88 Gree GMV MTAC VRF for North America MAINTENANCE...
- Page 89 Gree GMV MTAC VRF for North America MAINTENANCE 1 Malfunction List 1.1 Malfunction List for the Wired Controller Indoor: Error Error Error Content Content Content Code Code Code Quantity Of Group Control Indoor Unit Error Humidity Sensor Error Indoor Units Setting Error...
- Page 90 Gree GMV MTAC VRF for North America Error Code Content Error Code Content Malfunction of discharge temperature Low-pressure protection sensor of compressor 1 High discharge temperature protection of Malfunction of DC motor compressor High discharge temperature protection of Malfunction of outdoor ambient...
- Page 91 Gree GMV MTAC VRF for North America Debugging: Error Code Content Error Code Content Preheat time of compressor is Malfunction of lack of IDU insufficient Wrong setting of ODU’s capacity Alarm because project code of IDU is code/jumper cap inconsistent...
- Page 92 Gree GMV MTAC VRF for North America Error Code Content Error Code Content Upper limit of correction value for target Static pressure setting low pressure is Z2 Setting for general unit and high sensible heat unit (0 represents EVI operation status setting...
- Page 93 Gree GMV MTAC VRF for North America (2) High pressure protection. High pressure protection Measure whether Replace main Measure whether the high pressure the pressure board of outdoor is too high with manometer switch is normal unit Replace pressure switch...
- Page 94 Gree GMV MTAC VRF for North America (3) Low-pressure protection. Low pressure protection Measure Replace main whether the Measure whether the low pressure board of outdoor is too low with manometer pressure switch unit is normal Replace pressure switch Charge refrigerant according to the volume Check whether the refrigerant- on nameplate;...
- Page 95 Gree GMV MTAC VRF for North America (4) Discharge temperature protection. Discharge temperature protection Measure whether the resistance valve for Replace main board of Check whether the discharge outdoor unit temperature for compressor is temperature sensor is reached to 113℃...
- Page 96 Gree GMV MTAC VRF for North America (5) Mafunction of temperature sensor. Malfunction of temperature sensor Conform whether the Whether the plug of temperature is plug is connected connected with the plug of main board correctly correctly Replace temperature Measure whether resistance value of...
- Page 97 Gree GMV MTAC VRF for North America (8) Failure start-up. Failure start-up for consecutive 6 times Work normally after replacing main board? Replace compressor and Work normally liquid gas separator (9) Reset protection for drive module of compressor, drive PFC protection for compressor, malfunction of drive temperature sensor for compressor, circuit malfunction of drive current detection for compressor.
- Page 98 Gree GMV MTAC VRF for North America (11) Desynchronizing protection for inverter compressor. (12) Failure startup for inverter compressor.
- Page 99 Gree GMV MTAC VRF for North America (13) Loop malfunction of driven charging for compressor. (14) Malfunction of memory chip for inverter compressor.
- Page 100 Gree GMV MTAC VRF for North America (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 for driven DC bus bar of compressor.
- Page 101 Gree GMV MTAC VRF for North America (17) AC current protection for inverter compressor. (18) Communication malfunction between main contoller and driver of inverter compressor.
- Page 102 Gree GMV MTAC VRF for North America 3 Power Distribution of Unit 3.1 Power Distribution of Unit The control logical relationship among parts inside the electric box of unit is showed by the mongline diagram (CAD source file). The main loop is showed by bold line (line width: 1mm); the control loop is showed by slim line (line width: 0.2mm).
- Page 103 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 Core part of air conditioning system. It sucks low temperature and low pressure gas, compress it compressor to high temperature and high pressure gas, and then discharge Throttling device.
- Page 104 Gree GMV MTAC VRF for North America Photo Name Function It stays between outlet of evaporator and suction ouitlet of Vapour liquid separator compressor. It used for separating low temperature and low pressure refrigerant. Solenoid valve It used for connecting indoor unit...
- Page 105 Gree GMV MTAC VRF for North America Removal operation for panel Remark: Before removing the panel, please make sure that the unit is disconected with the power Process Photo Operation Instruction Loose the screws fixing the Remove soundproof soundproof case panel with a case panel.
- Page 106 Gree GMV MTAC VRF for North America Removal operation for blade and motor. Remark: Before removing the motor, please make sure that the unit is disconnected with the power. Process Photo Operation Instruction Loose screws fixing the motor with screwdriver.
- Page 107 Gree GMV MTAC VRF for North America Removal operation of compressor. 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 Take out the compressor and replace...
- Page 108 Gree GMV MTAC VRF for North America Removal operation for 4-way valve Remark: Before removing the 4-way valve, please make sure that there’s no refrigerant inside the pipeline of system and then power is disconnected. Process Photo Operation Instruction Replace 4-way valve...
- Page 109 Gree GMV MTAC VRF for North America Remival operation for eletronic expansion valve. Remark: Before removing the electronic expansion valve, please make sure that there’s no refrigerant in th pipeline of system and the power is disconnected. Process Photo Operation Instruction ...
- Page 110 Gree GMV MTAC VRF for North America 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 system and disconnect the power Process Photo Operation Instruction ...
- Page 111 Gree GMV MTAC VRF for North America Remove water pump. Remark: Before removing the water pump, please make sure that the unit is disconected with the power. Process Photo Operation Instruction Install the water pump and the drainage pipe sub-assy.
- Page 112 Gree GMV MTAC VRF for North America 5 Common Maintenance 5.1 Vacuum Drying for the System 5.1.1 Selection Requirement for the Vaccum Pump Do not use different vacuum pump for vaccum-pumping for different refrigerant system. The final vacuum for the vacuum pump should reach -0.1Mpa.
- Page 113 Gree GMV MTAC VRF for North America 5.2 Fill and Charge Refrigerant 5.2.1 Filling Procedure of Regrigerant Refrigerant quantity of outdoor unit before delivery: Model GMV-12WP/A-T(U) Refrigerant Qty (kg/oz) 0.8 (28.2) The refrigerant amount charged before delivery doesn’t include the amount that needs to be added to indoor units and the connection pipeline.
- Page 114 Gree GMV MTAC VRF for North America conditioner seriously, or even damage compressor and then lead to breakdown of system. Therefore, it needs to perform the airtightness test. If the there’s gas leakage after the system is installed completely, because the indoor ceiling decoration are all finished, it’s will be very difficult to find out the leakage point.
- Page 115 Gree GMV MTAC VRF for North America 6 Exploded View of Unit and Parts’ List Exploed view for outdoor unit and parts’ list. (1) Model: GMV-12WP/A-T(U) Parts list GMV-12WP/A-T(U) Name of Part Product Code CN850W0930 Pressure Protect Switch 46020006 Pressure Sensor...
- Page 116 Gree GMV MTAC VRF for North America GMV-12WP/A-T(U) Name of Part Product Code CN850W0930 Liquid Level Switch 43002400000503 Water Pump 812007060052 Strainer 07213050 Plate-Type Heat Exchanger 010007060010 Discharge Charge Valve 07133771 Electronic Expansion Valve 072009000001 Diversion Circle 200150060011 Strainer 0741520000201...
- Page 117 JF00304109...