Gree GMV-224WM/G-U Owner's Manual
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Gree GMV-224WM/G-U Owner's Manual

Gree GMV-224WM/G-U Owner's Manual

Commercial air conditioners
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Owner's Manual
Original Instructions
Commercial Air Conditioners
GMV DC Inverter VRF
Models:
GMV-224WM/G-U
GMV-280WM/G-U
GMV-335WM/G-U
......
GMV-2720WM/G-U

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Summary of Contents for Gree GMV-224WM/G-U

  • Page 1 Owner's Manual Original Instructions Commercial Air Conditioners GMV DC Inverter VRF Models: GMV-224WM/G-U GMV-280WM/G-U GMV-335WM/G-U …… GMV-2720WM/G-U...
  • Page 2 Preface Gree DC Inverter Multi VRF System, with the most advanced technologies in the world, uses eco-friendly refrigerant R410A as its cooling medium. For correct installation and operation, please read this manual carefully. This is the safety alert symbol. It is used to alert you to potential personal injury hazards.
  • 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 them) ··················································· 1 2 Product Introduction ······················································································ 4 2.1 Product Features ····························································································· 4 2.2 Product List ···································································································· 4 2.3 Names of Main Parts ························································································ 6 2.4 The Range of Production Working Temperature ······················································ 7 2.5 Standard Parts ································································································...

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

    (11) 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 6 GMV DC Inverter VRF (14) Make sure the unit can be earthed properly and soundly after plugging into the socket so as to avoid electric shock. Please do not connect the ground wire to gas pipe, water pipe, lightning rod or telephone line. (15) The leakage circuit breaker must be installed.
  • Page 7 (35) Never allow children to play around or on the top of the unit, otherwise injury may happen. (36) 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. (37) Do not expose the unit to the moist or corrosive circumstances.

  • Page 8: 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 272kW, which can be widely used in working area and especially applicable to the place with variable load change.
  • Page 9 GMV DC Inverter VRF GMV-224W GMV-280W GMV-335W GMV-400W GMV-450W GMV-504W GMV-560W GMV-615W GMV-680W Model M/G-U M/G-U M/G-U M/G-U M/G-U M/G-U M/G-U M/G-U M/G-U GMV-1399 ◆ ◆ ◆ WM/G-U GMV-1455 ◆ ◆ ◆ WM/G-U GMV-1510 ◆ ◆ ◆ WM/G-U GMV-1565 ◆ ◆...

  • Page 10: 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-224WM/G-U GMV-1510WM/G-U GMV-280WM/G-U GMV-1565WM/G-U GMV-335WM/G-U GMV-1623WM/G-U GMV-400WM/G-U GMV-1679WM/G-U...

  • Page 11: The Range Of Production Working Temperature

    Heating NOTICE! If exceeding the temperature range for working, the product may be damaged, which is not within the warranty range. 2.5 Standard Parts Please use the following standard parts supplied by Gree. Parts for Outdoor Unit Number Name Picture...

  • Page 12: Product Installation

    GMV DC Inverter VRF 3 Product Installation 3.1 Safety Precautions for Installing, Repairing and Moving Units The unit should not be installed in places with high environmental pH, high voltage fluctuations, vehicles and ships. (2) Do not touch the fins of the heat exchanger. Improper touch can cause damage or injury. (3) Do not mix any substances except the refrigerant when installing or moving the refrigerant circuit, and do not leave any air in the pipe.

  • Page 13: 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/G-U、GMV-280WM/G-U、 GMV-335WM/G-U unit. Unit: mm(inch) Fig.3.2.1...
  • Page 14 GMV DC Inverter VRF Pipe diameter Name GMV-224WM/G-U GMV-280WM/G-U GMV-335WM/G-U Gas pipe Φ19.05(3/4) Φ22.2(7/8) Φ25.4(1) ❶ Liquid pipe Φ9.52(3/8) Φ9.52(3/8) Φ12.7(1/2) ❷ Pipe and wiring passing 196×69 196×69 196×69 ❸ hole (L×W) (7-11/16×2-11/16) (7-11/16×2-11/16) (7-11/16×2-11/16) Hoist hole Φ50(1-15/16) Φ50(1-15/16) Φ50(1-15/16) ❹...
  • Page 15 GMV DC Inverter VRF Pipe diameter Name GMV-400WM/G-U GMV-450WM/G-U GMV-504WM/G-U Gas pipe Φ25.4(1) Φ28.6(1-1/8) Φ28.6(1-1/8) ❶ Liquid pipe Φ12.7(1/2) Φ12.7(1/2) Φ15.9(5/8) ❷ Pipe and wiring passing 234×69 234×69 234×69 ❸ hole (L×W) (9-3/16×2-11/16) (9-3/16×2-11/16) (9-3/16×2-11/16) Hoist hole Φ50(1-15/16) Φ50(1-15/16) Φ50(1-15/16) ❹...
  • Page 16 GMV DC Inverter VRF 3.2.2.1 Take seasonal wind into consideration when installing the outdoor unit (1) Anti-monsoon installation requirements for unit not connecting exhaust duct. When the exhaust duct is not connected, a protective cover should be installed according to the seasonal wind circumstances.
  • Page 17 GMV DC Inverter VRF 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. NOTICE! The photo is only for reference. Please refer to the installation locale. Fig.3.2.5...
  • Page 18 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(inch) Status A+B+C+D a≥300(11-13/16)
  • Page 19 GMV DC Inverter VRF Status A+B+C+D a≥300(11-13/16) b≥100(3-15/16) c≥100(3-15/16) Status 4 — d≥100(3-15/16) e≥200(7-7/8) f≥500(19-11/16) a≥300(11-13/16) b≥500(19-11/16) c≥100(3-15/16) Status 5 — d≥500(19-11/16) e≥200(7-7/8) f≥900(35-7/16) Notes: (1) The installation space shown above is based on the cooling operation when the outdoor temperature is 35℃(98℉).
  • Page 20 GMV DC Inverter VRF Unit: mm(inch) 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 3000mm(118-1/8inch)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 (59-1/16inch) or more from the top wall, as shown in the fig.
  • Page 21 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 22: 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 23 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(ft.) 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 24 GMV DC Inverter VRF NOTICE! (1) Note 1: Normally, the pipe length from the first branch of IDU to the farthest IDU is 40m(131-1/4ft.). When those three conditions as below are satisfied, the length can reached 120m(393-3/4ft). 1) Actual length of pipe in total: L1+L2x2+L3x2+L4x2+…+L9x2+a+b+…+i+j≤1000m(3280-3/4ft.);...
  • Page 25 GMV DC Inverter VRF Fig.3.3.2 Fig.3.3.3 Fig.3.3.4 Fig.3.3.5...
  • Page 26 GMV DC Inverter VRF Fig.3.3.6 (2) The drop and the length of the pipe between the outdoor units are as follows. Unit: m(ft.) Fig.3.3.7 NOTICE! When the distance A+B between the outdoor modules exceeds 2m(6-1/2ft.), U-type oil trap should be added at low-pressure gas pipe and is no more than 2m(6-1/2ft.) away from the outdoor manifold, and A+B≤10m(32-3/4ft.).
  • Page 27 GMV DC Inverter VRF Pipe between ODU and the first branch of IDU Basic module Gas pipe(mm(inch)) Liquid pipe(mm(inch)) GMV-224WM/G-U Φ19.05(3/4) Φ9.52(3/8) GMV-280WM/G-U Φ22.2(7/8) Φ9.52(3/8) GMV-335WM/G-U Φ25.4(1) Φ12.7(1/2) GMV-400WM/G-U Φ25.4(1) Φ12.7(1/2) GMV-450WM/G-U Φ28.6(1-1/8) Φ12.7(1/2) GMV-504WM/G-U Φ28.6(1-1/8) Φ15.9(5/8) GMV-560WM/G-U Φ28.6(1-1/8) Φ15.9(5/8) GMV-615WM/G-U Φ28.6(1-1/8)
  • Page 28 GMV DC Inverter VRF Pipe between indoor branch and IDU Rated capacity of indoor unit C(kW) Gas pipe(mm(inch)) Liquid pipe(mm(inch)) C≤2.8 Φ9.52(3/8) Φ6.35(1/4) 2.8<C≤5.0 Φ12.7(1/2) Φ6.35(1/4) 5.0<C≤14.2 Φ15.9(5/8) Φ9.52(3/8) 14.2<C≤25.2 Φ19.05(3/4) Φ9.52(3/8) 25.2<C≤30.0 Φ22.2(7/8) Φ9.52(3/8) 30.0<C≤40.0 Φ25.4(1) Φ12.7(1/2) 40.0<C≤45.0 Φ28.6(1-1/8) Φ12.7(1/2) (6) Select the branch “①”...

  • Page 29: 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 30 GMV DC Inverter VRF 3.4.2 Installation of the manifold The main function of manifold is used to shunt the refrigerant. Pay attention to the following points when installing it: (1) When installing the manifold, it should be as close as possible to the indoor unit to reduce the influence of the indoor unit manifold on the refrigerant distribution.
  • Page 31 GMV DC Inverter VRF 2) The installation of the branch pipe has the following requirements. Please install it according to the angle shown in the figure below. Improper installation may lead to malfunction of the outdoor unit. Y-type manifold: Fig.3.4.4 T- type manifold: Fig.3.4.5 3) Manifold has several pipe sections with different pipe size, which facilitates to match with...
  • Page 32 GMV DC Inverter VRF Fig.3.4.6 4) The length of a straight pipe between two manifolds cannot be less than 500mm (19-11/16 inch). 5) The length of a straight pipe before the main pipe port of the manifold cannot be less than 500mm (19-11/16 inch).
  • Page 33 GMV DC Inverter VRF Unit: mm(inch) Fig.3.4.8 (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.3.4.9 (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 34 GMV DC Inverter VRF 3.4.4 Refrigerant Pipe Insulation (1) Insulation Material Selection 1) Insulation materials should be made of materials that can withstand pipeline temperature: For heat pump unit, liquid pipe should bear 70℃(158ºF) or above, and gas pipe should bear 120℃(248ºF) or above.

  • Page 35: Static Pressure Ventilation Pipe Installation

    GMV DC Inverter VRF 3.5 Static Pressure Ventilation Pipe Installation Refer to this section when a static pressure ventilation duct should be installed for the unit. 3.5.1 Preparation of Static Pressure Ventilation Pipe Installation (1) Install the outdoor unit well. (2) The steel plate ventilation pipe is designed according to the unit and engineering requirements, and is installed well in accordance with the engineering regulations.

  • Page 36: Vacuum And Drying Of Refrigeration System

    GMV DC Inverter VRF Step Photo Operation instruction Note 1) Face the inside of the prepared canvas casing outwards, cover it from the top of the unit until the end of the Since drills are canvas is slightly required on the top higher than the unit.
  • Page 37 GMV DC Inverter VRF Fig.3.6.1 NOTICE! 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 38: Additional Refrigerant Charging

    GMV DC Inverter VRF 3) Vacuumize it for 4 hours, and check if the vacuum degree reaches -0.1 MPa 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 39 GMV DC Inverter VRF Diameter of Φ28.6 Φ25.4 Φ22.2 Φ19.05 Φ15.9 Φ12.7 Φ9.52 Φ6.35 liquid pipe (1-1/8) (7/8) (3/4) (5/8) (1/2) (3/8) (1/4) (mm(inch)) kg/m 0.680 0.520 0.350 0.250 0.170 0.110 0.054 0.022 OZ/inch 0.61 0.47 0.31 0.22 0.15 0.10 0.05 0.02 (2) Σ...
  • Page 40 GMV DC Inverter VRF Suppose the Pipeline charging amount A=∑Liquid pipe length × refrigerant charging amount of every 1m liquid pipe = 5kg(11.025 LBS). Total refrigerant charging amount R = 5+0=5kg(11.025 LBS). 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.
  • Page 41 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 Step 7: Close the high pressure gauge valve and replace the refrigerant tank.
  • Page 42 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 43: Electrical Installation

    GMV DC Inverter VRF system (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 44 Electrical parameter table: Minimum Maximum Power Supply Fuse Capacity Circuit Overcurrent Outdoor units Ampacity Protection V/Ph/Hz 19.6 GMV-224WM/G-U 440-460V 3~ 60Hz 20.0 GMV-280WM/G-U 440-460V 3~ 60Hz 21.0 GMV-335WM/G-U 440-460V 3~ 60Hz 23.9 GMV-400WM/G-U 440-460V 3~ 60Hz 24.2 GMV-450WM/G-U 440-460V 3~ 60Hz 25.0...
  • Page 45 GMV DC Inverter VRF 3.8.3 Power Cord Connection 3.8.3.1 Power Cord Installation Procedures Step 1: Pass the external power cord through the wire-passing rubber gasket of the chassis seal board, and connect the power cord’s “L1, L2, L3, ” to the power wiring board marked with “L1, L2, L3, ”...

  • Page 46: Communication Line Connection

    GMV DC Inverter VRF 3.9 Communication Line Connection Adopt CAN bus communication mode between indoor unit and outdoor unit as well among indoor units. 3.9.1 Connection Method of Communication Line Terminal Communication connections adopts screws for fixing. Fig.3.9.1 3.9.2 Communication Material Selection NOTICE! If the air conditioning unit is installed in a place with strong electromagnetic interference, the communication line between the indoor unit and the wired controller must adopts shielded wires;...
  • Page 47 GMV DC Inverter VRF (2) Selection of communication line between outdoor unit and indoor unit. Length of communication wire Wire Wire type between indoor unit and another diameter Remark indoor/outdoor unit(m(ft.)) 1. If the wire diameter is enlarged to 2 ×AWG16, the total communication length can reach 1500m(4921-1/4ft.).
  • Page 48 GMV DC Inverter VRF 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) 3.9.5 Communication Connection between IDU and ODU Communication between IDU and ODU is connected through the D1/D2 port of the...
  • Page 49 GMV DC Inverter VRF Fig.3.9.7 Connection of single unit Fig.3.9.8 Connection of modular units NOTICE! 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).
  • Page 50 GMV DC Inverter VRF ② As for modular outdoor unit, if there are multiple outdoor unit modules, the indoor unit must be connected to the last outdoor unit’s slave module (slave unit is set by SA8 of indoor unit main board). ③...
  • Page 51 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 52: Check Items After Installation

    GMV DC Inverter VRF 3.10 Check Items after Installation Check Items Conditions Might Happen Check Has the unit been fixed firmly? The unit may drop, shake or emit noise. It may cause insufficient cooling/heating Have you done the gas leakage test? capacity.

  • Page 53: 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 54 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 is conducting the address Flash assignment.
  • Page 55 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 10_ status Starting up the operation. judgment of Main pipeline status is abnormal.

  • Page 56: Basic Introduction For Engineering Debugging

    GMV DC Inverter VRF 4.3 Basic Introduction for Engineering Debugging 4.3.1 Debugging Method DC inverter multi VRF unit has three debugging methods at present: (1) Conduct it by pressing the buttons on the main board of outdoor unit. (2) Install proprietary software to conduct the debugging through PC. Indoor and outdoor units’ parameters displayed simultaneously through PC software.
  • Page 57 GMV DC Inverter VRF Step 6: When the unit is running to step 03, it displays the number of modules connected to the outdoor connection. At this time, the main board of each module is displayed as below: — Debugging code Progress code Status code LED1...
  • Page 58 GMV DC Inverter VRF — Debugging code Progress code Status code LED1 LED2 LED3 Meaning Progress Display Display Display Code Code Code status status status The system has detected “communication malfunction between main control and inverter compressor driver”. The system has detected “communication 05_detect internal malfunction between main...
  • Page 59 GMV DC Inverter VRF — Debugging code Progress code Status code LED1 LED2 LED3 Meaning Progress Display Display Display Display Code Code status status status status 07_indoor unit XXXX/ The system detected that components correspodin there’s fault for indoor inspection g error code unit’s parts.
  • Page 60 GMV DC Inverter VRF If the main module displays as below, it indicates the unit is starting the operation for judgment. — Debugging code Progress code Status code LED1 LED2 LED3 Meaning Progress Display Display Display Code Code Code status status status 10_ status judgment of...
  • Page 61 GMV DC Inverter VRF Once cooling/heating mode is selected, the relevant display is as below. Debugging — Progress code Status code code LED1 LED2 LED3 LED1 LED2 LED3 Meaning Progress Display Display Display Code Code Code status status status 13/14/15 Pilot run of cooling mode 13/14/15 Pilot run of heating mode...

  • Page 62: 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 —...

  • Page 63: Operation Instruction

    GMV DC Inverter VRF Debugging Parameter Reference Value for DC Inverter VRF Unit Debugging item Parameter name Unit Reference value Remark ● During cooling operation, the electronic expansion valve of heating is Opening of electronic 3000PLS; expansion valve of — ●...

  • Page 64: Maintenance

    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 65: Troubleshooting

    Too many heat resources in the room. Reduce heat resources. Filter is blocked and dirty. Clean the filter. NOTICE! If problem cannot be solved after checking the above items, please contact Gree service center and describe the cases and models.
  • Page 66 GMV DC Inverter VRF ● Following circumstances are not malfunctions. Phenomenon Causes When unit is started immediately Overload protection switch makes it run after 3 after it is just turned off minutes delay Unit doesn’t run When power is turned on Standby operating for about 1 minute Mist comes from the Under cooling...

  • Page 67: Error Indication

    GMV DC Inverter VRF 7.2 Error Indication NOTICE! 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 controller...
  • Page 68 GMV DC Inverter VRF Error Error — Content Content Code Code Malfunction of ODU High-pressure protection Discharge low-temperature protection Low-pressure protection High discharge temperature protection of Drive IPM low temperature protection compressor Main board of ODU is poor Malfunction of high-pressure sensor Malfunction of discharge temperature Malfunction of low-pressure sensor sensor of compressor 1...
  • Page 69 GMV DC Inverter VRF Error Error — Content Content Code Code Low voltage protection for DC bus bar of Phase-lacking of inverter compressor drive of compressor Malfunction of charging loop of driven of Failure startup of inverter compressor compressor AC current protection of inverter AC input voltage of drive of inverter compressor compressor...

  • Page 70: 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-280wm/g-uGmv-335wm/g-uGmv-400wm/g-uGmv-450wm/g-uGmv-504wm/g-uGmv-560wm/g-u ... Show all

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