Gree GMVVQ224WM/C-X Owner's Manual
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Gree GMVVQ224WM/C-X Owner's Manual

Gree GMVVQ224WM/C-X Owner's Manual

Gmv heat recovery dc inverter vrf
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Owner's Manual
Original Instructions
Commercial Air Conditioners
GMV Heat Recovery DC Inverter VRF
Models:
GMV-VQ224WM/C-X
GMV-VQ280WM/C-X
GMV-VQ335WM/C-X
GMV-VQ400WM/C-X
GMV-VQ450WM/C-X
GMV-VQ504WM/C-X
GMV-VQ560WM/C-X
GMV-VQ615WM/C-X
......
GMV-VQ2460WM/C-X

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Summary of Contents for Gree GMVVQ224WM/C-X

  • Page 1 Owner's Manual Original Instructions Commercial Air Conditioners GMV Heat Recovery DC Inverter VRF Models: GMV-VQ224WM/C-X GMV-VQ280WM/C-X GMV-VQ335WM/C-X GMV-VQ400WM/C-X GMV-VQ450WM/C-X GMV-VQ504WM/C-X GMV-VQ560WM/C-X GMV-VQ615WM/C-X …… GMV-VQ2460WM/C-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 Contents 1 Safety Notices (Please be sure to abide them) ............1 2 Product Introduction ..................... 5 2.1 Product Features ......................5 2.2 Product List ........................5 2.3 Names of Main Parts ......................8 2.4 The Range of Production Working Temperature ............... 8 2.5 Standard Parts ........................
  • Page 5 GMV Heat Recovery DC Inverter VRF 1 Safety Notices (Please be sure to abide them) WARNING: If not abide them strictly, it may cause severe damage to the unit or the people. NOTE! 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 Heat Recovery DC Inverter VRF use a heating device with open fire in the same room, please always open the door or window to keep the air circulation and avoid the lack of oxygen in the room.) Please do not put the heating device with open fire at the air outlet, or put it under the air conditioner.
  • 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. ...
  • Page 9 This system can be widely used in commercial and working area and is especially applicable to places with big load change. Gree commercial multi VRF system is absolutely your best choice.
  • Page 10 GMV Heat Recovery DC Inverter VRF GMV- GMV- GMV- GMV- GMV- GMV- GMV- GMV- Model VQ224WM/ VQ280WM/ VQ335WM/ VQ400WM/ VQ450WM/ VQ504WM/ VQ560WM/ VQ615WM/ GMV- VQ840WM/ ◆ ◆ GMV- VQ895WM/ ◆ ◆ GMV- VQ950WM/ ◆ ◆ GMV- VQ1015W ◆ ◆ M/C-X GMV- VQ1065W ◆...
  • Page 11 GMV Heat Recovery DC Inverter VRF GMV- GMV- GMV- GMV- GMV- GMV- GMV- GMV- Model VQ224WM/ VQ280WM/ VQ335WM/ VQ400WM/ VQ450WM/ VQ504WM/ VQ560WM/ VQ615WM/ GMV- VQ2015W ◆ ◆◆ ◆ M/C-X GMV- VQ2070W ◆ ◆ ◆◆ M/C-X GMV- VQ2125W ◆ ◆◆◆ M/C-X GMV- VQ2180W ◆...
  • Page 12 GMV Heat Recovery DC Inverter VRF (3) Outdoor units of Gree Heat Recovery DC Inverter VRF System can be connected to multi VRF indoor units, including cassette type unit, one-way cassette type unit, wall-mounted unit and duct type unit. When any one of the indoor units receives operating command, outdoor unit will start operation as per required capacity.
  • Page 13 GMV Heat Recovery DC Inverter VRF 2.5 Standard Parts Please use the following standard parts supplied by Gree. Parts for Outdoor Unit Number Name Picture Quantity Remarks Owner's Manual — Must be connected to Wiring (match the last IDU of...
  • Page 14 GMV Heat Recovery DC Inverter VRF with sufficient length. 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-VQ224WM/C-X, GMV-VQ280WM/C-X, GMV- VQ335WM/C-X unit. Unit: mm Fig.3.2.1...
  • Page 15 GMV Heat Recovery DC Inverter VRF Pipe diameter(mm) Name GMV-VQ224WM/C-X GMV-VQ280WM/C-X GMV-VQ335WM/C-X Low pressure gas pipe Φ19.05 Φ22.2 Φ25.4 ① High pressure gas pipe Φ15.9 Φ19.05 Φ19.05 ② Liquid pipe Φ9.52 Φ9.52 Φ12.7 ③ Wire-passing hole (L×W) 196×69 196×69 196×69 ④...
  • Page 16 GMV Heat Recovery DC Inverter VRF Pipe diameter(mm) Name GMV-VQ400WM/C-X GMV-VQ450WM/C-X GMV-VQ504WM/C-X Low pressure gas pipe Φ25.4 Φ28.6 Φ28.6 ① High pressure gas pipe Φ22.2 Φ22.2 Φ25.4 ② Liquid pipe Φ12.7 Φ12.7 Φ15.9 ③ Wire-passing hole (L×W) 234×69 234×69 234×69 ④...
  • Page 17 GMV Heat Recovery 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 18 GMV Heat Recovery 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. NOTE: The photo is only for reference. Please refer to the installation locale. Fig.3.2.5...
  • Page 19 GMV Heat Recovery 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...
  • Page 20 GMV Heat Recovery 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 NOTES: (1) The installation space shown above is based on the cooling operation when the outdoor temperature is 35℃.
  • Page 21 GMV Heat Recovery DC Inverter VRF 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 22 GMV Heat Recovery 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 23 GMV Heat Recovery 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 24 GMV Heat Recovery DC Inverter VRF Fig.3.3.1 L11: Length from the first branch to the nearest IDU; L12: Length from the first branch to the farthest IDU; Equivalent length of branch of IDU is 0.5m. Length(m) Remarks — L1+L2+L3+L4+…+L12+a11+b12+… Total length (actual length) of connection pipe ≤1000 +d21+d22 Actual length...
  • Page 25 GMV Heat Recovery DC Inverter VRF (2) Note 2: When the ODU is at the up side and the height drop exceeds 50m, please contact the engineer; when the ODU is at the lower side and the height drop exceeds 90m, please contact the engineer.
  • Page 26 GMV Heat Recovery DC Inverter VRF Low pressure gas pipe High pressure gas pipe Outdoor Model Liquid pipe size(mm) size(mm) size(mm) GMV-VQ2070WM/C-X Φ51.4 Φ25.4 Φ44.5 GMV-VQ2125WM/C-X Φ51.4 Φ25.4 Φ44.5 GMV-VQ2180WM/C-X Φ51.4 Φ25.4 Φ44.5 GMV-VQ2245WM/C-X Φ51.4 Φ25.4 Φ44.5 GMV-VQ2295WM/C-X Φ51.4 Φ25.4 Φ44.5 GMV-VQ2349WM/C-X Φ51.4...
  • Page 27 GMV Heat Recovery DC Inverter VRF 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 28 GMV Heat Recovery DC Inverter VRF Fig.3.3.8 (2) Connection sketch map of multi-module system Fig.3.3.9...
  • Page 29 GMV Heat Recovery DC Inverter VRF (3) For single-module system Select appropriate pipe between outdoor unit and the first indoor branch (“L”) as per the pipe size of outdoor unit. Pipe size of basic outdoor module is shown as follows: Between outdoor unit and the first indoor branch：...
  • Page 30 GMV Heat Recovery DC Inverter VRF Size of connection pipe between branches of outdoor module Total rated capacity of upstream modules: Q (kW) Low pressure gas pipe (mm) Liquid pipe (mm) High pressure gas pipe (mm) 25.2≥Q Φ19.05 Φ9.52 Φ15.9 28.0≥Q>25.2 Φ22.2 Φ9.52...
  • Page 31 GMV Heat Recovery DC Inverter VRF Total rated capacity of Size of connection pipe between branches of mode exchange box downstream indoor units: X Low pressure gas pipe (mm) Liquid pipe (mm) High pressure gas pipe (mm) (kW) X≤5.0 Φ12.7 Φ6.35 Φ12.7 <...
  • Page 32 GMV Heat Recovery DC Inverter VRF 10）Piping between indoor branches (“l”) Rated capacity of the Size of connection pipe between indoor branches downstream indoor units Gas pipe (mm) Liquid pipe (mm) C(kW) C≤2.8 Φ9.52 Φ6.35 2.8<C≤5.0 Φ12.7 Φ6.35 5.0<C≤14.2 Φ15.9 Φ9.52 14.2<C≤16 Φ19.05...
  • Page 33 GMV Heat Recovery DC Inverter VRF Fig.3.3.10 3.3.7 Branch selection of indoor unit of mode exchange box (“C1”) Capacity of downstream indoor R410A refrigerant system Model units: X/kW Y-type branch 16<X≤28 FQ01B/A 3.3.8 Piping size between mode exchange box and downstream indoor unit (“m”) Size of connection pipe between indoor branch and indoor unit should be consistent with the connection pipe of indoor unit.
  • Page 34 GMV Heat Recovery DC Inverter VRF (4) When laying the pipes, be careful not to deform them. The radius of bending parts should be more than 200mm. The pipes can’t be repeatedly bent or stretched, otherwise the material will get harden. Do not bend or stretch the pipe over three times at the same position. (5) Please use a torque wrench to connect union nut on the indoor unit.
  • Page 35 GMV Heat Recovery DC Inverter VRF Fig.3.4.2 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. Fig.3.4.3 3）...
  • Page 36 GMV Heat Recovery DC Inverter VRF 5） The length of a straight pipe before the main pipe port of the manifold cannot be less than 500 mm. 6） The length of a straight pipe between the branch of the manifold and the IDU cannot be less than 500 mm.
  • Page 37 GMV Heat Recovery DC Inverter VRF 2) When the diameter of the copper pipe is more than or equal to Φ15.9mm, the wall thickness of the insulation material is no less than 20mm; when the diameter of the copper pipe is less than 15.9mm, the wall thickness of the insulation material is no less than 15mm.
  • Page 38 GMV Heat Recovery DC Inverter VRF Step Photo Operation instruction Note Select installation position for the outdoor unit and then fix it well; Ventilation pipe Determine the material: steel installation position plate or iron of the ventilation sheet; Step 1 pipe according to Ventilation pipe the position of the...
  • Page 39 GMV Heat Recovery DC Inverter VRF Step Photo Operation instruction Note Pull the canvas casing upside down and press it on the butt flange of the steel pipe ventilation pipe with steel bars; Drill holes with the Step 4 manual drill and fix them with self- tapping screws;...
  • Page 40 GMV Heat Recovery DC Inverter VRF When leaving the factory, low pressure gas pipe, high pressure gas pipe, liquid pipe and stop valve of outdoor unit have been closed. Please confirm it during installation. Before the test, a small amount of lubricant oil required by the corresponding system should be smeared at the nut and the end of the pipe.
  • Page 41 GMV Heat Recovery DC Inverter VRF Fig.3.6.2 When the vacuum pump is turned off to stop vacuuming, the valve should be closed at first and then cut off the power for the vacuum pump. Keep the vacuum for 2 hours and confirm that the pressure of the vacuum gauge has not risen.
  • Page 42 GMV Heat Recovery DC Inverter VRF NOTES: ① Rated capacity configuration rate of indoor unit and outdoor unit C = sum of indoor unit rated cooling capacity / sum of outdoor unit rated cooling capacity. ② If all indoor units are all fresh air indoor units, the added refrigerant amount for each module B is 0kg.
  • Page 43 GMV Heat Recovery DC Inverter VRF Step 2: Once vacuum drying is completed, close the high and low pressure gauge pipes of pressure gauge 1 as well as the high pressure gauge pipe of pressure gauge 2. Disconnect the medium pressure gauge pipes of the two pressure gauges from the vacuum pumps. Disassemble the double intermediate gauge pipe and the vacuum pump connection end, and then connect the refrigerant tank.
  • Page 44 GMV Heat Recovery DC Inverter VRF 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 Heat Recovery DC Inverter VRF and charge the residual refrigerant “m`”. Step 5: When all refrigerant has been charged, close the refrigerant tank valve and wait until the automatic debugging for the complete unit is finished. Step 6: Once debugging is finished, disassemble the pressure gauge, etc., to complete the refrigerant-charging work.
  • Page 46 GMV Heat Recovery DC Inverter VRF accordance with local laws, regulations and corresponding instructions. All parts, materials and electrical operations provided must comply with local regulations. (2) The unit must be reliably grounded, with grounding resistance smaller than 4Ω. (3) The special power supply for air conditioning unit must be used, and the power supply specifications must be consistent with the rated power supply of the unit.
  • Page 47 GMV Heat Recovery DC Inverter VRF Capacity of circuit Minimum cross- Recommended wire Combination breaker of each sectional area of Model Power spec (cross-sectional area) method combination grounding wire module (A) GMV- 380-415V VQ450WM/C- 6.0×5 — 3N～ 50/60Hz GMV- 380-415V VQ504WM/C- 10.0×5 10.0...
  • Page 48 GMV Heat Recovery DC Inverter VRF Capacity of circuit Minimum cross- Recommended wire Combination breaker of each sectional area of Model Power spec (cross-sectional area) method combination grounding wire module (A) GMV- 2.5×5+10.0×5+10.0 380-415V VQ1510WM/C- 280+615+615 25+50+50 2.5+10.0+10.0 3N～ 50/60Hz ×5 GMV- 4.0×5+10.0×5+10.0...
  • Page 49 GMV Heat Recovery DC Inverter VRF NOTES! (1) Selection of circuit breaker and power cord is based upon unit’s maximum power (maximum current). (2) Specification of power cord is based on the working condition where ambient temperature is 40℃ and multi-core copper cable with working temperature of 90℃ is lying on the surface of slot.
  • Page 50 GMV Heat Recovery DC Inverter VRF Step 3: Please refer to the engineering wiring mark on the unit for the power cord connection. WARNING! When the power cord and the communication line pass through the wire hole, they must be equipped with wire rubber ring. 3.8.3.2 External Wiring Diagram Each unit should be equipped with a circuit breaker for short circuit and abnormal overload protection.
  • Page 51 GMV Heat Recovery DC Inverter VRF communication line between indoor units (between indoor unit and outdoor unit) must use the shielded twisted pairs. (1) Selection of communication line between indoor unit and wired controller. Total length of communication wire Wire diameter Wire type between indoor unit Wire standard...
  • Page 52 GMV Heat Recovery DC Inverter VRF Fig.3.9.3 3.9.3Communication method Communication bus connection between indoor unit，mode exchange box and outdoor unit must be connected in series, rather than star connection; the endmost indoor unit of communication bus between indoor unit，mode exchange box and outdoor unit must connect with the communication matching resistor(in the outdoor unit plastic bag);...
  • Page 53 GMV Heat Recovery DC Inverter VRF Fig.3.9.5 Fig.3.9.6...
  • Page 54 GMV Heat Recovery DC Inverter VRF Fig.3.9.7 (2) If a communication wire is not long enough and needs to be connected with another wire by peeling away its outer layer, crimp connection or soldering connection must be adopted. 3.9.4 Communication Address Setting The indoor unit and outdoor unit adopt automatic addressing technology.
  • Page 55 GMV Heat Recovery DC Inverter VRF Fig.3.9.8 Connection of communication for single-module system...
  • Page 56 GMV Heat Recovery DC Inverter VRF Fig.3.9.9 Connection of communication for multi-module system 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).
  • Page 57 GMV Heat Recovery DC Inverter VRF (5) The mode exchange box must be connected in series and the last mode exchange box must be connected with a matching resistance (provided among the accessory parts of outdoor unit). Connect the matching resistance to the D1, D2 terminals of communication wiring board of mode exchange box.
  • Page 58 GMV Heat Recovery DC Inverter VRF Fig.3.9.13 Two wired controllers control multiple IDUs 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 59 GMV Heat Recovery DC Inverter VRF Check items Possible conditions due to improper installation Check Is the address code of outdoor modules and the The unit cannot run normally. Communication code of module quantity correct? malfunction might happen. Is the address code of indoor units and wired The unit cannot run normally.
  • Page 60 GMV Heat Recovery DC Inverter VRF Fig.4.2.1 (2) When starting up the debugging, the system automatically selects the operating mode according to the current ambient temperature. (3) When debugging, the front panel of the outdoor unit must be completely closed, otherwise it will affect the accuracy of debugging (as shown in the Fig.
  • Page 61 GMV Heat Recovery DC Inverter VRF Instruction for each stage progress at the time of debugging Debugging code Progress code Status code — LED1 LED2 LED3 Meaning Progress Display Display Display Code Code Code status status status LED3 displays the module quantity. It 01~04 Flash needs to manually confirm the module...
  • Page 62 GMV Heat Recovery DC Inverter VRF Instruction for each stage progress at the time of debugging Debugging code Progress code Status code — LED1 LED2 LED3 Meaning Progress Display Display Display Code Code Code status status status The system refrigerant is insufficient. Please charge the refrigerant until the 09_refrigerant fault is eliminated.
  • Page 63 GMV Heat Recovery 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.
  • Page 64 GMV Heat Recovery DC Inverter VRF During the assignment process, all module digital tubes displays are as below: Debugging code Progress code Status code — LED1 LED2 LED3 Progress Display Display Display Code Code Code status status status 02_ allocate Flash addresses Step 6: When the unit is running to step 03, it displays the number of modules connected to the...
  • Page 65 GMV Heat Recovery DC Inverter VRF the next step of detection. Debugging code Progress code Status code — LED1 LED2 LED3 Meaning Progress Display Display Display Code Code Code status status status Once the system 05_ detect inspection is completed, internal it will enter into the next communication...
  • Page 66 GMV Heat Recovery DC Inverter VRF Debugging code Progress code Status code — LED1 LED2 LED3 Meaning Progress Display Display Display Code Code Code status status status 06_outdoor unit The system detected that Corresponding components there’s fault for outdoor error code inspection unit’s parts.
  • Page 67 GMV Heat Recovery DC Inverter VRF Debugging code Progress code Status code — LED1 LED2 LED3 Meaning Progress Display Display Display Code Code Code status status status The preheat time for 08_compressor compressor hasn’t reached preheat confirmation Step 12: Unit debugging step 09 is “refrigerant judgment before startup”. If the amount of refrigerant inside the system satisfies the requirements for starting the operation, the display is as below.
  • Page 68 GMV Heat Recovery DC Inverter VRF If inspection valve of the unit is normal, the display is as below. The unit will automatically enter into the next step. Debugging code Progress code Status code — LED1 LED2 LED3 Meaning Progress Display Display Display...
  • Page 69 GMV Heat Recovery DC Inverter VRF Once debugging is completed, resume the standby status and the display is as below: Debugging code Progress code Status code LED1 LED2 LED3 Meaning Display Display Code Code Code Display status status status The complete unit has finished the debugging and it stays at 01~04 standby status.
  • Page 70 GMV Heat Recovery DC Inverter VRF Debugging Parameter Reference Value for GMV Heat Recovery DC Inverter VRF Unit Debugging item Parameter name Unit Reference value Remark ● The normal high pressure value of the system is 20℃~55℃. According to the change of ambient temperature and the change of operating capacity of the system, the high pressure value of the...
  • Page 71 (5) When restart up the unit after it has been stop operation for a long time, turn on the air conditioner's power switch 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.
  • Page 72 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.
  • Page 73 GMV Heat Recovery DC Inverter VRF Reason “Malfunction” When unit is started immediately after Overload protection switch makes it run after 3 minutes Unit doesn’t run it is just turned off delay When power is turned on Standby operating for about 1 minute Mist comes from Under cooling Indoor high humidity air is cooled rapidly...

  • Page 74: Table Of Contents

    GMV Heat Recovery DC Inverter VRF Error Error Content Content — Code Code Indoor unit’s branch is not For single control over multiple inconsistent for one-to-more unit of units, IDU is inconsistent heat recovery system (reheating-dehumidifying system) Malfunction of lower water Indoor PCB is poor temperature sensor of water tank Malfunction of ambient temperature...

  • Page 75: Temperature Sensor 1

    GMV Heat Recovery DC Inverter VRF Error Error Content Content — Code Code Current sensor of compressor 5 is Current sensor of compressor 6 is abnormal abnormal Malfunction of casing top Malfunction of DC motor temperature sensor of compressor Malfunction of exit tube Malfunction of casing top temperature sensor of mode temperature sensor of compressor 2...
  • Page 76 GMV Heat Recovery DC Inverter VRF Error Error Content Content — Code Code Malfunction of charging loop of Failure startup of inverter driven of compressor compressor AC current protection of inverter AC input voltage of drive of inverter compressor compressor Driving board of fan operates Malfunction of driving board of fan abnormally...
  • Page 77 GMV Heat Recovery DC Inverter VRF Error Error Content Content — Code Code Communication malfunction Communication malfunction between main control and DC-DC between main control and inverter controller compressor driver Communication malfunction between main control and inverter Malfunction of lack of IDU fan driver Alarm because project code of IDU Alarm because ODU quantity is...
  • Page 78 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.

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