Gree GMV-224WM/H-X Owner's Manual
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Gree GMV-224WM/H-X Owner's Manual

Dc inverter vrf
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Owner's Manual
Original Instructions
Commercial Air Conditioners
GMV DC Inverter VRF
Models:
GMV-224WM/H-X
GMV-280WM/H-X
GMV-335WM/H-X
......
GMV-2460WM/H-X

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Summary of Contents for Gree GMV-224WM/H-X

  • Page 1 Owner's Manual Original Instructions Commercial Air Conditioners GMV DC Inverter VRF Models: GMV-224WM/H-X GMV-280WM/H-X GMV-335WM/H-X …… GMV-2460WM/H-X...
  • Page 2 (7) The final right to interpret for this instruction manual belongs to Gree Electric Appliances Inc. of Zhuhai.
  • Page 3 Exception Clauses Manufacturer will bear no responsibilities when personal injury or property loss is caused by the following reasons: (1) Damage the product due to improper use or misuse of the product; (2) Alter, change, maintain or use the product with other equipment without abiding by the instruction manual of manufacturer;...

  • Page 4: Table Of Contents

    Contents 　 1 Safety Notices (Please be sure to abide) ..............1 2 Product Introduction ....................5 2.1 Product Features ......................... 5 2.2 Product List .......................... 5 2.3 Names of Main Parts ......................7 2.4 Product Working Principle ....................8 2.5 The Range of Production Working Temperature ...............

  • Page 5: Safety Notices (Please Be Sure To Abide)

    GMV DC Inverter VRF 1 Safety Notices (Please be sure to abide) WARNING: If not abide them strictly, it may cause severe damage to the unit or the people. NOTICE: If not abide them strictly, it may cause slight or medium damage to the unit or the people.
  • Page 6 If anything abnormal happens (such as burning smell), please power off the unit and cut off the main power supply, and then immediately contact Gree appointed service center. If abnormality keeps going, the unit might be damaged and lead to electric shock or fire.
  • Page 7 GMV DC Inverter VRF When the unit is turned on for heating, it takes time for the room temperature to rise because the unit uses hot air circulation to heat the entire room. Open the door and window and keep good ventilation in the room to avoid oxygen deficit when the gas/oil supplied heating equipment is used.
  • Page 8 MUST TO DO User is not allowed to repair the unit. Fault service may cause electric shock or fire accidents. Please contact Gree appointed service center for help. Do not expose the unit to the moist or corrosive circumstances. Do not directly touch the refrigerant leaking from the refrigerant pipe connection place, as it may cause frostbite.

  • Page 9: Product Introduction

    2 Product Introduction 2.1 Product Features Gree Multi VRF Modular System adopts inverter compressor technology. According to change the displacement of compressor, stepless capacity regulation within range of 10%-100% can be realized. Various product lineup is provided with capacity range from 22.4kW to 246kW, which can be widely used in working area and especially applicable to the place with variable load change.
  • Page 10 GMV DC Inverter VRF GMV-224W GMV-280W GMV-335W GMV-400W GMV-450W GMV-504W GMV-560W GMV-615W Model M/H-X M/H-X M/H-X M/H-X M/H-X M/H-X M/H-X M/H-X GMV-1345WM/ ◆ ◆ ◆ GMV-1400WM/ ◆ ◆ ◆ GMV-1455WM/ ◆ ◆ ◆ GMV-1510WM/ ◆ ◆◆ GMV-1565WM/ ◆ ◆◆ GMV-1630WM/ ◆...

  • Page 11: Names Of Main Parts

    2.2.2 Combinations of Indoor and Outdoor Units (1) The following table indicates the number of IDU for ODU： Max number of connectable Max number of connectable ODU model ODU model IDU (unit) IDU (unit) GMV-1400WM/H-X GMV-224WM/H-X GMV-1455WM/H-X GMV-280WM/H-X GMV-1510WM/H-X GMV-335WM/H-X GMV-1565WM/H-X GMV-400WM/H-X GMV-1630WM/H-X GMV-450WM/H-X...

  • Page 12: Product Working Principle

    The air temperature and humidity in the indoor space is realized by the return air circulation of the indoor unit. 2.4.2 Working principle Diagram System principle diagram of GMV-224WM/H-X , GMV-280WM/H-X , GMV-335WM/H-X Fig. 2.4.1...
  • Page 13 GMV DC Inverter VRF System principle diagram of GMV-400WM/H-X , GMV-450WM/H-X Fig. 2.4.2...

  • Page 14: The Range Of Production Working Temperature

    Heating NOTE! If exceeding the temperature range for working, the product may be damaged, which is not within the warranty range. 2.6 Standard Parts Please use the following standard parts supplied by Gree. Parts for Outdoor Unit Number Name Picture...

  • Page 15: Product Installation

    GMV DC Inverter VRF Parts for Outdoor Unit Number Name Picture Quantity Remarks Must be connected to Wiring (match the last IDU of with resistance) communication connection Used for connecting L-shape pipe pipes 3 Product Installation 3.1 Safety Precautions for Installing, Repairing and Moving Units (1) The unit should not be installed in places with high environmental pH, high voltage fluctuations, vehicles and ships.

  • Page 16: Outdoor Unit Installation

    GMV DC Inverter VRF 3.2 Outdoor Unit Installation 3.2.1 Product Size Drawing The product photos are only for reference. Please refer to the actual product. Outline and Physical Dimension of GMV-224WM/H-X， GMV-280WM/H-X， GMV-335WM/H-X unit. Unit: mm Fig. 3.2.1...
  • Page 17 GMV DC Inverter VRF Pipe diameter Name GMV-224WM/H-X GMV-280WM/H-X GMV-335WM/H-X Φ19.05 Φ22.2 Φ25.4 ① Gas pipe Φ9.52 Φ9.52 Φ12.7 ② Liquid pipe Pipe and wiring passing hole ③ × 196×69 196×69 (L × W) Φ50 Φ50 Φ50 ④ Hoist hole Outline and Physical Dimension of GMV-400WM/H-X,GMV-450WM/H-X,GMV-504WM/H-X，...
  • Page 18 GMV DC Inverter VRF Pipe diameter Name GMV-400WM/H-X GMV-450WM/H-X ① Φ25.4 Φ28.6 Gas pipe ② Φ12.7 Φ12.7 Liquid pipe Pipe and wiring passing hole ③ 234×69 234×69 (LxW) ④ Φ50 Φ50 Hoist hole Pipe diameter Name GMV-504WM/H-X GMV-560WM/H-X GMV-615WM/H-X ① Φ28.6 Φ28.6 Φ28.6...
  • Page 19 GMV DC Inverter VRF NOTE! The photo is only for reference. Please refer to the installation locale. Fig. 3.2.3 (2) Anti-monsoon installation requirements for unit connecting exhaust duct: Fig. 3.2.4 3.2.2.2 Take Snow into Consideration When Installing the Outdoor Unit When the unit is installed, the snow should be taken into consideration for the height of the base.
  • Page 20 GMV DC Inverter VRF NOTE! The photo is only for reference. Please refer to the installation locale. Fig. 3.2.5...
  • Page 21 GMV DC Inverter VRF 3.2.3 Installation Space Requirements The installation space of the unit should consider the maintenance space of the unit and the ventilation of the unit. Select an installation method according to the actual situation. Fig.3.2.6 Unit：mm Status A+B+C+D a≥300 b≥100...
  • Page 22 GMV DC Inverter VRF Status A+B+C+D a≥300 b≥100 c≥100 Status 4 —— d≥100 e≥200 f≥500 a≥300 b≥500 c≥100 Status 5 —— d≥500 e≥200 f≥900 NOTE! (1) The installation space shown above is based on the cooling operation when the outdoor temperature is 35 ℃...
  • Page 23 GMV DC Inverter VRF (5) If the wall exceeds the above value, increase the space as follows. Unit：mm Fig. 3.2.8 (6) If there is an obstacle above the unit, install the unit as follows. In principle, the top of the unit is required to be more than 3000 mm from the top wall. If the space around the front, back, left and right sides of the unit is open space, the top of the unit is required to be 1500mm or more from the top wall, as shown in the fig.
  • Page 24 GMV DC Inverter VRF 3.2.5 Diagram of installation foundation The concrete foundation of the ODU must be strong enough. Ensure that the drainage is smooth and that the ground drainage or floor drainage is not affected. Requirements on the concrete foundation are as follows: (1) The concrete foundation must be flat and have enough rigidity and strength to undertake the unit’s weight during running.

  • Page 25: Pipeline Design

    GMV DC Inverter VRF 3.3 Pipeline Design 3.3.1 Notices for Pipeline Design (1) Air-conditioning installation should not damage the load-bearing structure and decorative style of the building. (2) Air-conditioning pipes should be laid along the bottom of the beam. If the pipes meet at the same elevation, they should be treated as follows: 1) Drain pipes, ducts and pressure pipes avoid gravity pipes.
  • Page 26 GMV DC Inverter VRF 3.3.3 Allowable pipe length and height difference among indoor and outdoor units Y type branch joint is adopted to connect indoor and outdoor units. Connecting method is shown in the figure below. Unit:m Fig. 3.3.1 L10: Length from the first branch to the farthest IDU; L11: Length from the first branch to the nearest IDU;...
  • Page 27 Outdoor Model Gas pipe size(mm) Liquid pipe size(mm) GMV-224WM/H-X No need to enlarge pipe size No need to enlarge pipe size Φ12.7 GMV-280WM/H-X No need to enlarge pipe size Φ28.6...
  • Page 28 GMV DC Inverter VRF Outdoor Model Gas pipe size(mm) Liquid pipe size(mm) Φ44.5 Φ22.2 GMV-1565WM/H-X Φ44.5 Φ22.2 GMV-1630WM/H-X Φ44.5 Φ22.2 GMV-1680WM/H-X Φ44.5 Φ22.2 GMV-1734WM/H-X Φ44.5 Φ22.2 GMV-1790WM/H-X Φ44.5 Φ22.2 GMV-1845WM/H-X Φ44.5 Φ22.2 GMV-1905WM/H-X Φ44.5 Φ22.2 GMV-1959WM/H-X Φ51.4 Φ25.4 GMV-2015WM/H-X Φ51.4 Φ25.4 GMV-2070WM/H-X Φ51.4...
  • Page 29 GMV DC Inverter VRF Fig. 3.3.4 Fig. 3.3.5 Fig. 3.3.6 (2) The drop and the length of the pipe between the outdoor units are as follows. Unit:m Fig. 3.3.7 NOTE! When the distance A+B between the outdoor modules exceeds 2m, U-type oil trap should be added at low-pressure gas pipe and is no more than 2m away from the outdoor manifold, and A+B≤10m.
  • Page 30 (2) Pipe "A" between the outdoor unit and the manifold of outdoor unit. The pipe size is based on the capacity of upstream module. Pipe between ODU and the first branch of IDU Basic module Gas pipe(mm) Liquid pipe(mm) Φ19.05 Φ9.52 GMV-224WM/H-X Φ22.2 Φ9.52 GMV-280WM/H-X Φ25.4 Φ12.7 GMV-335WM/H-X Φ25.4 Φ12.7...
  • Page 31 GMV DC Inverter VRF (4) Fitting pipe "D" between indoor side manifolds. Pipe size (between two manifolds at indoor unit side) is based on the total capacity of downstream indoor unit(s). Dimension of the pipe of indoor branch Total capacity of downstream indoor unit(s) C(kW) Gas pipe(mm) Liquid pipe(mm)

  • Page 32: Pipeline Installation And Insulation

    GMV DC Inverter VRF 3.4 Pipeline Installation and Insulation 3.4.1 Pipeline Installation of Refrigeration System (1) Before welding the pipeline sealing cap, please make sure there's no refrigerant in pipeline. If welding it directly, it may cause unnecessary property damage or personal injury. (2) Conform to the following principles during pipe connection: Connection pipeline should be as short as possible.
  • Page 33 GMV DC Inverter VRF (2) The manifold must be matched with the equipment. The other products which are not specified by the manufacturer shall not be used. (3) Check the model before installing the manifold. Do not use it incorrectly. 1) Y-type manifold, see in Fig.
  • Page 34 GMV DC Inverter VRF Fig. 3.4.4(b) 4) The length of a straight pipe between two manifolds cannot be less than 500 mm. 5) The length of a straight pipe before the main pipe port of the manifold cannot be less than 500 mm.
  • Page 35 GMV DC Inverter VRF Unit: mm Fig. 3.4.6 (2) Suspend the header to the ceiling, and be sure to install the T-type manifold so that the outlet pipes are horizontal at the lower side. Fig. 3.4.7 (3) The branches of the manifold should be parallel and should not be overlapped. (4) The liquid pipe and the gas pipe should have the same pipe length and the same laying circuit.

  • Page 36: Static Pressure Ventilation Pipe Installation

    GMV DC Inverter VRF 3.4.4 Refrigerant Pipe Insulation (1) Insulation Material Selection Insulation materials should be made of materials that can withstand pipeline temperature: For heat pump unit, liquid pipe should bear 70℃ or above, and gas pipe should bear 120℃...
  • Page 37 GMV DC Inverter VRF (3) According to the size of the unit and steel plate ventilation pipe, prepare suitable canvas casing, tin foil paper, steel strip and self-tapping screws, and prepare tools such as electric drill, screwdriver, etc. 3.5.2 Ventilation Pipe Installation When the effective area of the air inlet is less than 70% of the total inlet area of all outdoor unit, it needs to add an induced draft fan.
  • Page 38 GMV DC Inverter VRF Step Photo Operation instruction Note Face the inside of the prepared canvas casing outwards, cover it from Step 3 the top of the unit until the end of the canvas is flush with the unit or slightly higher than the unit.

  • Page 39: Vacuum And Drying Of Refrigeration System

    GMV DC Inverter VRF Step Photo Operation instruction Note ① Pull the canvas casing upside down and press it on the butt flange of the steel pipe ventilation pipe with steel bars; ② Drill holes with the Step 5 manual drill and fix them with self-tapping screws;...
  • Page 40 GMV DC Inverter VRF Fig. 3.6.1 NOTE! All welding points can't be heat-insulated and wrapped until the air tightness test is completed. (2) Operation procedures for the air tightness test When leaving the factory, gas pipe, liquid pipe and cut-off valve of outdoor unit have been closed. Please confirm it during installation.

  • Page 41: Additional Refrigerant Charging

    GMV DC Inverter VRF 3) Vacuumize it for 4 hours, and check if the vacuum degree reaches -0.1MPa or above. If not, there may be a leak. It needs to conduct the leakage test once again. If there is no leak, vacuumize it for another 2 hours.
  • Page 42 GMV DC Inverter VRF Diameter of liquid Φ28.6 Φ25.4 Φ22.2 Φ19.05 Φ15.9 Φ12.7 Φ9.52 Φ6.35 pipe (mm) kg/m 0.680 0.520 0.350 0.250 0.170 0.110 0.054 0.022 (2) Σ Refrigerant charging amount B of every module Refrigerant charging amount B of every Module capacity(kW) module (kg) ②...
  • Page 43 GMV DC Inverter VRF Total refrigerant charging amount R = 5+0=5kg. Modular combination of outdoor unit subjects to combinations that is currently available. 3.7.2 Refrigerant-charging Method Refrigerant charging for multi VRF unit includes two parts: pre-charging and start-up charging. (1) Pre-charging of refrigerant. Step 1: Connect the pipe of high pressure gauge of the pressure gauge to the detection port of liquid pipe, the pipe of low pressure gauge to the detection port of gas pipe valve, and the pipe of intermediate pressure gauge to the vacuum pump.
  • Page 44 GMV DC Inverter VRF Fig. 3.7.2 Step 5: Open the high pressure gauge valve (the low pressure gauge valve remains closed), charge the system with refrigerant, and record the weight change of the refrigerant tank. Step 6: When refrigerant tank is over and the refrigerant can't be charged to the system any more, record the current weight of m2.
  • Page 45 GMV DC Inverter VRF Fig. 3.7.3 Step 2: Fully open the liquid pipe valve and gas pipe valve of each module. Step 3: Make the complete unit enter into debugging operation by the debugging software or the main board of outdoor unit. (see the debugging part for the specific operation). Step 4: When it comes to the procedure of charging refrigerant, open the refrigerant tank valve and charge the residual refrigerant “m”.

  • Page 46: Electrical Installation

    GMV DC Inverter VRF (3) When the total amount of refrigerant in the system is more than the maximum amount of refrigerant, the cooling system should be designed again. In this case, the cooling system can also be separated into several cooling systems with small capacity, or add corresponding ventilation measures or alarming display.
  • Page 47 Minimum cross-sectional Combination wire Model Power supply of each area of grounding wire method (cross-sectional combination area) (mm module (A) 380-415V 3N~ 2.5×5 GMV-224WM/H-X 50/60Hz 380-415V 3N~ 2.5×5 GMV-280WM/H-X 50/60Hz 380-415V 3N~ GMV-335WM/H-X 4.0×5 50/60Hz 380-415V 3N~ 6.0×5 GMV-400WM/H-X 50/60Hz 380-415V 3N~ 6.0×5...
  • Page 48 GMV DC Inverter VRF Capacity of Recommended circuit breaker Minimum cross-sectional Combination wire Model Power supply of each area of grounding wire method (cross-sectional combination area) (mm module (A) 380-415V 3N~ GMV-1065WM/H-X 450+615 40+50 6.0+10.0 6.0×5+10.0×5 50/60Hz 380-415V 3N~ GMV-1119WM/H-X 504+615 50+50 10.0+10.0...
  • Page 49 GMV DC Inverter VRF Capacity of Recommended circuit breaker Minimum cross-sectional Combination wire Model Power supply of each area of grounding wire method (cross-sectional combination area) (mm module (A) 4.0×5+10.0× 380-415V 3N~ GMV-2180WM/H-X 335+615+615+615 25+50+50+50 4.0+10.0+10.0+10.0 50/60Hz 5+10.0×5+10.0×5 6.0×5+10.0× 380-415V 3N~ GMV-2245WM/H-X 400+615+615+615 40+50+50+50 6.0+10.0+10.0+10.0...
  • Page 50 GMV DC Inverter VRF marked with “L1, L2, L3, N, ” respectively and the grounding screw beside the power wiring board. Fig. 3.8.2 Step 2: Tighten the cable with a cable tie. Step 3: Please refer to the engineering wiring mark on the unit for the power cord connection. WARNING! When the strong wire and the communication line pass through the wire hole, they must be equipped with wire rubber ring.

  • Page 51: Communication Line Connection

    GMV DC Inverter VRF NOTE! The maximum connection number “N” of outdoor unit and the maximum connection number “n” of indoor unit are decided by the combination method of outdoor unit. For details, please refer to the part of unit capacity configuration. 3.8.4 Wiring Diagram Refer to the wiring diagram attached on the unit.
  • Page 52 GMV DC Inverter VRF The connection between the indoor unit and the wired controller is shown as below: Fig. 3.9.2 (2) Selection of communication line between outdoor unit and indoor unit. Length of communication Wire diameter Wire type line between Wire standard Remark indoor unit and...
  • Page 53 GMV DC Inverter VRF Fig. 3.9.4 Fig. 3.9.5 Fig. 3.9.6 3.9.4 Communication Address Setting The indoor unit and outdoor unit adopt automatic addressing technology. It is not necessary to manually set the address code. It only needs to set the main module and centralized control address (set it when centralized control of multiple refrigeration systems is required) .
  • Page 54 GMV DC Inverter VRF Central control communication among multiple multi VRF system is connected through G1 and G2 ports on the communication terminal block of main module. Below are the connection graphics of single unit and modular units: Fig. 3.9.7 Connection of single unit Fig.
  • Page 55 GMV DC Inverter VRF NOTES! ① As for modular indoor unit, if there are multiple outdoor unit modules, the master module must be the first outdoor unit module on the communication line, and it must not connect to the indoor unit (main module is set by SA8 of indoor unit main board). ②...

  • Page 56: Check Items After Installation

    GMV DC Inverter VRF Fig. 3.9.12 Two wired controllers control multiple IDU When two wired controllers control multiple IDUs, the wired controller can be connected to any one IDU, provided that the connected IDU is of the same series. Meanwhile, one and only one of the wired controllers must be set as a slave controller.

  • Page 57: Debugging And Operation

    GMV DC Inverter VRF Check Items Conditions Might Happen Check Does the unit drain well? It may cause condensation and dripping. Is the voltage in accordance with the rated voltage It may cause malfunction or damage the part. specified on the nameplate? Is the electric wiring and pipe connection installed It may cause malfunction or damage the part.

  • Page 58: Notices For Unit Debugging

    GMV DC Inverter VRF 4.2 Notices for Unit Debugging (1) Before conducting the debugging, please ensure that the compressor has been preheated for more than 2 hours, and check whether the preheating is normal by hand. Debugging can be started up only when the preheating is normal, otherwise the compressor may be damaged.
  • Page 59 GMV DC Inverter VRF (4) Display instruction for each stage progress at the time of debugging: Instruction for each stage progress at the time of debugging Debugging —— Progress code Status code code LED1 LED2 LED3 Meaning Progress Display Display Display Code Code...
  • Page 60 GMV DC Inverter VRF Instruction for each stage progress at the time of debugging Debugging —— Progress code Status code code LED1 LED2 LED3 Meaning Progress Display Display Display Code Code Code status status status The system detected an indoor unit fault. XXXX indicates engineering number of fault XXXX/cor indoor unit, and the corresponding fault code is...

  • Page 61: Basic Introduction For Engineering Debugging

    GMV DC Inverter VRF When master module displays as below, the complete unit has conducted the debugging and it stays at the standby status. Debugging code Progress code Status code LED1 LED2 LED3 Meaning Display Display Display Code Code Code status status status...
  • Page 62 GMV DC Inverter VRF Debugging —— Progress code Status code code LED1 LED2 LED3 Meaning Progress Display Display Display Code Code Code status status status Mater module hasn't been set in the system. It needs to reset it. More than two master modules are set in the 01_ set up system and it needs to reset it.
  • Page 63 GMV DC Inverter VRF After 30s of display, the display is as follows; if press SW3 button within 30s, the display is as follows. The unit automatically enters the next step of debugging: —— Debugging code Progress code Status code LED1 LED2 LED3...
  • Page 64 GMV DC Inverter VRF —— Debugging code Progress code Status code LED1 LED2 LED3 Meaning Progress Display Display Code Code Code Display status status status The system detected that there's no fault for outdoor 06_outdoor unit's unit's parts. Then it will parts inspection automatically enter into the next step.
  • Page 65 GMV DC Inverter VRF —— Debugging code Progress code Status code LED1 LED2 LED3 Meaning Progress Display Display Display Code Code Code status status status Compressor's preheat time has 08_compressor reached 2h, and then it will enter preheat confirmation into the next step. If the preheat time for compressor hasn't reached 2h, there will be abnormal phenomenon.
  • Page 66 GMV DC Inverter VRF If the unit has detected the abnormal status, the display is as below: —— Debugging code Progress code Status code LED1 LED2 LED3 Meaning Progress Display Display Display Code Code Code status status status 10_ status judgment of main pipeline before Main pipeline is abnormal starting...
  • Page 67 GMV DC Inverter VRF —— Debugging code Progress code Status code LED1 LED2 LED3 LED1 LED2 LED3 Meaning Progress Display Display Display Code Code Code status status status 13/14/ Pilot run of cooling mode 13/14/ Pilot run of heating mode Corresp 13/14/ onding...

  • Page 68: Parameter Judgment Reference Value For Unit Normal Operation

    GMV DC Inverter VRF 4.4 Parameter Judgment Reference Value for Unit Normal Operation Debugging Parameter Reference Value for DC Inverter VRF Unit Debugging item Parameter name Unit Reference value Remark Outdoor ambient ℃ —— —— temperature Discharge pipe ℃ —— temperature of inverter compressor 1 ●...

  • Page 69: Operation Instruction

    GMV DC Inverter VRF Debugging Parameter Reference Value for DC Inverter VRF Unit Debugging item Parameter name Unit Reference value Remark ● The normal bus voltage is 1.414 times of the power supply voltage. For example, if the three-phase power supply voltage is 390V, then Drive bus voltage of the rectified bus voltage is: 390V ×...

  • Page 70: Maintenance At The End Of Using Season

    2 hours before starting the operation to preheat the outdoor compressor crankcase. (6) Check if the outdoor unit is installed firmly. If there is any abnormality, please contact Gree service center. 6.4 Maintenance at the End of Using Season (1) Cut off the main power of the air conditioning unit.
  • Page 71 Too many heat resources in the room Reduce heat resources Filter is blocked for dirt Clean the filter NOTE! If problem cannot be solved after checking the above items, please contact Gree service center and show phenomena and models. Following circumstances are not malfunction. “Malfunction” Reason...

  • Page 72: Error Indication

    GMV DC Inverter VRF 7.2 Error Indication NOTE! For specific unit fault and maintenance, please refer to the engineering debugging and after-sales maintenance manual of DC inverter VRF unit. Error Error Content Content —— Code Code Malfunction of IDU Protection of indoor fan Auxiliary heating protection Water-full protection Abnormal power supply for wired...
  • Page 73 GMV DC Inverter VRF Error Error Content Content —— Code Code Drive IPM high temperature protection of Malfunction of drive temperature sensor of Indoor Malfunction of charging loop of IDU Other malfunction of drive Malfunction of ODU High-pressure protection Discharge low-temperature protection Low-pressure protection High discharge temperature protection of Drive IPM low temperature protection...
  • Page 74 GMV DC Inverter VRF Error Error Content Content —— Code Code Reset protection of driving module of Drive PFC protection of compressor compressor Over-current protection of inverter Drive IPM module protection of compressor compressor Malfunction of drive temperature sensor Drive IPM high temperature protection of of compressor compressor Desynchronizing protection of inverter...
  • Page 75 GMV DC Inverter VRF Error Error Content Content —— Code Code Emergency operation DIP switch code of Setting of main IDU is succeeded compressor is wrong Identification malfunction of IDU of mode Charging of refrigerant is invalid exchanger Communication malfunction between the Drive board of grid-connection is drive board of grid-connection and the main abnormal...

  • Page 76: After-Sales Service

    Gree. Warranty should meet the following requirements: (1) First run of the unit should be operated by professional personnel from Gree appointed service center. (2) Only Gree manufactured accessories can be used on the machine.

This manual is also suitable for:

Gmv-1400wm/h-xGmv-280wm/h-xGmv-1455wm/h-xGmv-335wm/h-xGmv-1510wm/h-xGmv-400wm/h-x ... Show all

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