Page 1 GMV5 DC Inverter VRF Units For North America Capacity: 72000Btu/h~360000Btu/h Rated Frequency: 60Hz Operation Range: Cooling: 23~125.6℉ Heating: -4~75.2℉...
Page 2: Table Of Contents
Contents PREFACE ..................................1 SAFTY PRECAUTIONS ..............................2 CHAPTER 1 INTRODUCTION TO BASIC FEATURES OF UNITS ..................6 1 MODELS LIST ................................6 2 BASIC OPERATING PRINCIPLE ........................... 7 3 INTERNAL PIPING DESIGN OF THE UNITS ........................7 3.1 P GMV-72WM/B-F (U) / GMV-72WM/B-U (U) GMV-96WM/B-F (U) / GMV-96WM/B-U (U) ..
Page 3 6.3. R IDU ...................... 72 EQUIREMENTS ON NDEPENDENT RAINAGE FOR 6.4. R ......................73 EQUIREMENTS ON ENTRALIZED RAINAGE FOR 7 ELECTRIC AND CONTROLLER INSTALLATION ......................74 7.1 PRECAUTIONS ................................. 75 7.2 INSTALLATION OF THE POWER CABLE ........................76 7.3 INSTALLATION OF THE COMMUNICATION SYSTEM ....................80 8 VACUUMIZATION AND DESICCATION FOR THE REFRIGERANT SYSTEM ..............86 8.1 AIR-TIGHTNESS TEST ...............................
Page 4: Preface
GMV5 DC Inverter VRF Units PREFACE This manual specifies safe operation requirements for GMV5 series VRF units from perspectives of engineering and installation, commissioning and maintenance, as well as basic principles and implementation methods. Professional operators must abide by relevant national (local) safety requirements and technical specifications set forth in this manual during operations;...
Page 5: Safty Precautions
GREE GMV5 DC Inverter VRF Units SAFTY PRECAUTIONS To prevent injury to the user or other people and property damage, the following instructions must be followed. Incorrect operation due to ignoring instruction will cause harm or damage. The seriousness is classified by the following indications.
Page 6 • If the pressure switch, thermal switch, or other protection device is shorted and operated forcibly, or parts other than those specified by GREE are used, fire or explosion may result. Ventilate before operating air conditioner when gas leaked out.
Page 7 GREE GMV5 DC Inverter VRF Units ■Installation Always check for gas (refrigerant) leakage after installation or repair of product. • Low refrigerant levels may cause failure of product. Do not install the product where the noise or hot air from the outdoor unit could damage the neighborhoods.
Page 8 GREE GMV5 DC Inverter VRF Units or personal injury. Install and insulate the drain hose to ensure that water is drained away properly based on the installation manual. • A bad connection may cause water leakage. Safely dispose of the packing materials.
Page 9: Chapter 1 Introduction To Basic Features Of Units
GREE GMV5 DC Inverter VRF Units CHAPTER 1 INTRODUCTION TO BASIC FEATURES OF UNITS 1 MODELS LIST 208/230V 3~60Hz: Capacity Power Model Product Code Ref. Appearance Cooling Heating Supply (Btu/h) (Btu/h) 208/230V GMV-72WM/B-F(U) CN851W1380 72000 81000 R410A 3~60Hz 208/230V GMV-96WM/B-F(U)
Page 10: Basic Operating Principle
GMV5 DC Inverter VRF Units 2 BASIC OPERATING PRINCIPLE Outdoor units of GMV5 VRF air conditioner can be implemented by combining multiple modules in parallel. Similarly, indoor units (IDUs) consist of multiple units connecting in parallel. The operating principle is as follows: When an IDU is operating in cooling mode, the outdoor unit (ODU) can correspondingly enable the outdoor module based on the operating load requirement of the IDU.
Page 11: Piping Diagram Of Gmv-120Wm/B-F(U)、Gmv-120Wm/B-U(U)
GREE GMV5 DC Inverter VRF Units 3.2 Piping Diagram of GMV-120WM/B-F(U)、GMV-120WM/B-U(U)
Page 12: Piping Diagram Of Gmv-144Wm/B1-F (U)
GREE GMV5 DC Inverter VRF Units 3.3 Piping Diagram of GMV-144WM/B1-F (U)
Page 13: Piping Diagram Of Gmv-168Wm/B1-F (U)
GREE GMV5 DC Inverter VRF Units 3.4 Piping Diagram of GMV-168WM/B1-F (U)
Page 14: Names And Main Functions Of Components
GREE GMV5 DC Inverter VRF Units 3.5 Names and Main Functions of Components Name Main Function Adjusts its own rotational speed based on the actual requirement of the Compressor system to implement capacity control. Maintains a proper oil temperature in the compressor when the...
Page 15: Basic Parameters Of Unit
GREE GMV5 DC Inverter VRF Units Name Main Function Stop valve, closed when the unit is delivered from the factory and will be Liquid valve opened after installation. Stop valve, closed when the unit is delivered from the factory and will be Gas valve opened after installation.
Page 16 GREE GMV5 DC Inverter VRF Units － Outdoor Units_Heat Pump 6Ton 8Ton 10Ton 12Ton 14Ton GMV-72WM/B GMV-96WM/B GMV-120WM/B GMV-144WM/B1 GMV-168WM/B1 － Model -F(U) -F(U) -F(U) -F(U) -F(U) Max. quantity of unit connected indoor unit Φ3/4 Φ7/8 Φ1-1/8 Φ1-1/8 Φ1-1/8 Size of gas pipe Φ3/8...
Page 17 GREE GMV5 DC Inverter VRF Units － Outdoor Units_Heat Pump 18Ton 20Ton 22Ton － Model GMV-216WM/B-F(U) GMV-240WM/B-F(U) GMV-264WM/B-F(U) GMV-72WM/B-F(U)+ GMV-96WM/B-F(U)+ GMV-120WM/B-F(U)+ － Module (combinated) GMV-96WM/B-F(U)+ GMV-120WM/B-F(U) GMV-120WM/B-F(U) GMV-96WM/B-F(U) Cooling capacity Btu/h 216000 240000 264000 Heating capacity Btu/h 243000 270000 297000...
Page 18 GREE GMV5 DC Inverter VRF Units Outdoor Units_Heat － 24Ton 26Ton 28Ton 30Ton Pump － Model GMV-288WM/B-F(U) GMV-312WM/B-F(U) GMV-336WM/B-F(U) GMV-360WM/B-F(U) GMV-96WM/B-F(U) GMV-96WM/B-F(U) GMV-96WM/B-F(U) GMV-120WM/B-F(U) － Module (combinated) + GMV-96WM/B-F(U) +GMV-96WM/B-F(U) +GMV-120WM/B-F(U) +GMV-120WM/B-F(U) +GMV-96WM/B-F(U) +GMV-120WM/B-F(U) +GMV-120WM/B-F(U) +GMV-120WM/B-F(U) Cooling capacity Btu/h 288000...
Page 19 GREE GMV5 DC Inverter VRF Units GMV-**WM/B-U (U) － Outdoor Units_Heat Pump 6Ton 8Ton 10Ton － Model GMV-72WM/B-U(U) GMV-96WM/B-U(U) GMV-120WM/B-U(U) －－－－ Module (combinated) Cooling capacity Btu/h 72000 96000 120000 Heating capacity Btu/h 81000 108000 135000 Air volume...
Page 20 GREE GMV5 DC Inverter VRF Units － Outdoor Units_Heat Pump 12Ton 14Ton 16Ton － Model GMV-144WM/B-U(U) GMV-168WM/B-U(U) GMV-192WM/B-U(U) GMV-72WM/B-U(U)+ GMV-72WM/B-U(U)+ GMV-96WM/B-U(U)+ － Module (combinated) GMV-72WM/B-U(U) GMV-96WM/B-U(U) GMV-96WM/B-U(U) Cooling capacity Btu/h 144000 168000 192000 Heating capacity Btu/h 162000 189000 216000 Air volume...
Page 21 GREE GMV5 DC Inverter VRF Units － Outdoor Units_Heat Pump 18Ton 20Ton 22Ton － Model GMV-216WM/B-U(U) GMV-240WM/B-U(U) GMV-264WM/B-U(U) GMV-72WM/B-U(U)+ GMV-96WM/B-U(U)+ GMV-120WM/B-U(U)+ － Module (combinated) GMV-96WM/B-U(U)+ GMV-120WM/B-U(U) GMV-120WM/B-U(U) GMV-96WM/B-U(U) Cooling capacity Btu/h 216000 240000 260000 Heating capacity Btu/h 243000 270000 297000...
Page 22 GREE GMV5 DC Inverter VRF Units － Outdoor Units_Heat Pump 24Ton 26Ton 28Ton 30Ton － Model GMV-288WM/B-U(U) GMV-312WM/B-U(U) GMV-336WM/B-U(U) GMV-360WM/B-U(U) GMV-96WM/B-U(U) GMV-96WM/B-U(U) GMV-96WM/B-U(U) GMV-120WM/B-U(U) － Module (combinated) +GMV-96WM/B-U(U) +GMV-96WM/B-U(U) +GMV-120WM/B-U(U) +GMV-120WM/B-U(U) +GMV-96WM/B-U(U) +GMV-120WM/B-U(U) + GMV-120WM/B-U(U) +GMV-120WM/B-U(U) Cooling capacity Btu/h 288000...
Page 23: Electrical Parameters
GREE GMV5 DC Inverter VRF Units 5 ELECTRICAL PARAMETERS 208/230V 3～ 60Hz Power Supply Fuse Capacity Minimum Circuit Ampacity Maximum Overcurrent Protection Model V/Ph/Hz GMV-72WM/B-F(U) 208V/230V 3~ 60Hz GMV-96WM/B-F(U) 208V/230V 3~ 60Hz GMV-120WM/B-F(U) 208V/230V 3~ 60Hz GMV-144WM/B1-F(U) 208V/230V 3~ 60Hz...
Page 24: Circuit Diagram
GREE GMV5 DC Inverter VRF Units 6 Circuit Diagram 6.1 Circuit diagram of GMV-**WM/B-F (U) and GMV-**WM/B1-F GMV-72WM/B-F (U) GMV-96WM/B-F (U)
Page 25 GREE GMV5 DC Inverter VRF Units GMV-120WM/B-F (U) GMV-144WM/B1-F (U)
Page 26: Circuit Diagram Of Gmv-**Wm/B-U (U)
GREE GMV5 DC Inverter VRF Units GMV-168WM/B1-F (U) NOTICE! This drawing is just for reference; please always refer to the electric wiring stuck to the unit for actual wiring. 6.2 Circuit diagram of GMV-**WM/B-U (U) GMV-72WM/B-U (U)
Page 27 GREE GMV5 DC Inverter VRF Units GMV-96WM/B-U (U) GMV-120WM/B-U (U) NOTICE! This drawing is just for reference; please always refer to the electric wiring stuck to the unit for actual wiring. When conducting maintenance based on above circuit diagrams, units must be power-off. Please...
Page 28: Unit Operating Temperature
GREE GMV5 DC Inverter VRF Units 7 UNIT OPERATING TEMPERATURE Cooling Ambient temperature: -5º C(23º F)~52º C(125.6º F) Heating Ambient temperature: -20º C (-4º F)~24º C (75.2º F) In the case of a full fresh air conditioning IDU, the unit operating temperature is as follows: Cooling Ambient temperature: 16º...
Page 29: Chapter 2 Installation
GREE GMV5 DC Inverter VRF Units CHAPTER 2 INSTALLATION 1 ENGINEERING INSTALLATION PREPARATION 1.1 INSTALLATION SAFETY 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 30: Cooperation Between Different Professions
GREE GMV5 DC Inverter VRF Units Installation Problem Possible Consequence Water drainage from the Residual water in IDUs can affect the normal operation of the system. The condensate water pipe is not possible water leakage can damage the IDU's decoration.
Page 31 GREE GMV5 DC Inverter VRF Units If the pipe needs to go through a bearing beam, a steel casing must be prepared. 1.3.2 Requirements for cooperation with decoration engineering The air conditioning installation should not damage the bearing structure or the decorative style. Air conditioning pipes should be laid out along the bottom of the beam as possible.
Page 32 GREE GMV5 DC Inverter VRF Units Construction Air-conditioning Engineering allocation Engineering cooperation meeting Engineering meeting about socket installation and insertion Working drawing preparation Iron frame socket installation Pipe laying Indoor unit installation Frame reinforcement Refrigerant piping Water drainage piping Piping...
Page 33: Onsite Review Of Design Drawing
GREE GMV5 DC Inverter VRF Units 1.4 ONSITE REVIEW OF DESIGN DRAWING Installation personnel must carefully read and understand the design scheme and drawings provided by engineering designers, and prepare detailed and feasible construction organization design after reviewing the onsite status.
Page 34: Construction Organization Process
GREE GMV5 DC Inverter VRF Units 1.5 CONSTRUCTION ORGANIZATION PROCESS Design disclosure Material purchasing Review of onsite installation places Connecting pipe Outdoor unit installation Indoor unit installation installation Welding Remote Communication Power cable Power cable Drain pipe control cables Purging, pressure maintaining...
Page 35: Material Selection
GREE GMV5 DC Inverter VRF Units 2 MATERIAL SELECTION 2.1 REQUIREMENT FOR SELECTING CONSTRUCTION MATERIALS The materials, equipment and instruments used during air conditioning engineering construction must have certifications and test reports. Products with fireproof requirements must be provided with fireproof inspection certificates and must meet national and relevant compulsory standards.
Page 36 GREE GMV5 DC Inverter VRF Units e. HDG steel pipe: Φ25mm×3.25mm, Φ32mm×3.25mm, Φ40mm×3.5mm, Φ50mm×3.5mm. 2.2.3 Insulation material a. Rubber foam insulation material; b. Flame retardancy level: B1 or higher; c. Refractoriness: at least 120℃; d. The insulation thickness of condensate water pipe: at least 10 mm;...
Page 37 GREE GMV5 DC Inverter VRF Units 2.2.6 Other requirements Properties of the above-mentioned materials and the rest of materials that are used for the construction and installation must comply with local rules and regulations. Wall thickness of copper pipe shall be consistent with above requirements and the design operating pressure shall not be lower than 3.8MPa (551psi).
Page 38: Installation Space Requirement
GREE GMV5 DC Inverter VRF Units 3 INSTALLATION SPACE REQUIREMENT 3.1 PLACE SELECTION FOR INSTALLING ODU The widely-used VRF units are applicable for various scenarios. In residential areas, especially in rooms where elderly and infants live, a higher refrigerating performance and noise control is required.
Page 39 GREE GMV5 DC Inverter VRF Units External and installation dimensions of GMV-96WM/B-F (U), GMV-96WM/B-U (U), GMV-120WM/B-F (U) / GMV-120WM/B-U (U) and GMV-144WM/B1-F (U) External and installation dimensions of GMV-168WM/B1-F (U)
Page 40: Installation Space Requirement For Odu
GREE GMV5 DC Inverter VRF Units 3.3 INSTALLATION SPACE REQUIREMENT FOR ODU 1. If all sides of the ODU (including the top) are surrounded by walls, process according to the following requirements for installation space: (1) Installation space requirements for the single-module unit...
Page 41 GREE GMV5 DC Inverter VRF Units (3) Installation space requirements for triple-module unit 2. When there is wall (or similar obstruction) above the unit, keep the distance between the unit top and the wall at least 3000mm (118-1/8in.) or above. When the unit is located in a totally open space with no obstructions in four directions, keep the distance between the unit top and wall at least 1500mm (59in.) or above (See Fig.1).
Page 42 GREE GMV5 DC Inverter VRF Units When the unit is located at a half-open space (front and left/right side is open), install the unit as per the same or opposite direction. 3. Considering the seasonal wind in outdoor unit installation...
Page 43 GREE GMV5 DC Inverter VRF Units Anti-monsoon installation requirement for unit connecting exhaust duct 4. Considering snow in outdoor unit installation 5. During the installation of the ODU, induced and exhaust pipes must be connected. In addition, the aperture opening rate of shutters must be at least 80%, and the angle between the shutters and the horizontal plane should be less than 20°...
Page 44 GREE GMV5 DC Inverter VRF Units must be interconnected with the ventilating duct through canvas to prevent abnormal vibration and noise generated by the steel-plate ventilating duct. The joint part must be tightly sealed with tin foil to avoid air leakage.
Page 45 GREE GMV5 DC Inverter VRF Units Step 3 Step 4 Step 5 Step 6 Method 2 1) Install the ODU (2) and steel-plate ventilating duct (1). Take out the grille from the top of the top case component. Use the prepared canvas casing inside out (4) to cover the surroundings over the top of the unit.
Page 46 GREE GMV5 DC Inverter VRF Units Step 1 Step 2 Step 3 Step 4 6. When the effective area of air intake is less than 70% of the total air intake area of all ODUs, an induced draft fan is also required. The total air input of induced draft fan should be no less than 80% of the total supply air rate.
Page 47: Requirements On Foundation Installation
GREE GMV5 DC Inverter VRF Units 3-point support may make Outdoor Unit unstable, resulting in a fall. • Use 2 belts of at least 3m (26.2ft) long. • Place extra cloth or boards in the locations where the casing comes in contact with the sling to prevent damage.
Page 48: Odu Fixing
GREE GMV5 DC Inverter VRF Units  Install where it can sufficiently support the weight of the outdoor unit.If the support strength is not enough, the outdoor unit may drop and hurt people.  Install where the outdoor unit may not fall in strong wind or earthquake.If there is a fault in the supporting conditions, the outdoor unit may fall and hurt people.
Page 49: Piping Connection
GREE GMV5 DC Inverter VRF Units 5 PIPING CONNECTION 5.1 Schematic Diagram of Piping Connection...
Page 50: Schematic Diagram Of Piping Sequence
GREE GMV5 DC Inverter VRF Units 5.2 Schematic Diagram of Piping Sequence GMV-72WM/B-F (U) and GMV-72WM/B-U(U) GMV-96WM/B-F (U), GMV-120WM/B-F (U) , GMV-96WM/B-U (U), GMV-120WM/B-U (U) and GMV-144WM/B1-F (U)
Page 51 GREE GMV5 DC Inverter VRF Units GMV-168WM/B1-F (U) Pipe connection diagram of outdoor modules Each ODU system can be connected to multiple IDUs. Detailed information about the number of units to be connected and capacity ranges is shown in the following table: 208/230V 3～...
Page 52 GREE GMV5 DC Inverter VRF Units Capacity Range of Connected IDU (kBtu/h) Maximum Number of Model Connected IDUs (units) Minimum Capacity Maximum Capacity GMV-240WM/B-F(U) 120.0 324.0 GMV-264WM/B-F(U) 132.0 356.4 GMV-288WM/B-F(U) 144.0 388.8 GMV-312WM/B-F(U) 156.0 421.2 GMV-336WM/B-F(U) 168.0 453.6 GMV-360WM/B-F(U) 180.0 486.0...
Page 53: Allowable Pipe Length And Drop Height Among Indoor And Outdoor Units
GREE GMV5 DC Inverter VRF Units 5.3 Allowable pipe length and drop height among indoor and outdoor units Y type branch joint is adopted to connected indoor and outdoor units. Connecting method is shown in the figure below. Remark: Equivalent length of one Y-type manifold is about 0.5m (1-3/4feet).
Page 54 GREE GMV5 DC Inverter VRF Units Equivalent length from the first branch to the furthest ≤40(131-1/4) L6+L7+L8+L9+j piping (1) Height difference ≤90(295-1/4) —— Outdoor unit at upper(2) between outdoor ≤90(295-1/4) —— Outdoor unit at lower(2) unit and indoor unit ≤30(98-2/4) ——...
Page 55: Connection Pipe Among Outdoor Modules
GREE GMV5 DC Inverter VRF Units Outdoor Model Gas pipe size mm(in.) Liquid pipe size mm(in.) Φ34.9(1-3/8) Φ15.9(5/8) GMV-144WM/B-U(U) Φ34.9(1-3/8) Φ19.05(3/4) GMV-168WM/B-U(U) Φ34.9(1-3/8) Φ19.05(3/4) GMV-192WM/B-U(U) Φ34.9(1-3/8) Φ19.05(3/4) GMV-216WM/B-U(U) Φ19.05(3/4) GMV-240WM/B-U(U) No need to enlarge pipe size Φ22.2(7/8) GMV-264WM/B-U(U) No need to enlarge pipe size Φ22.2(7/8)
Page 56: Fitting Pipe Between Outdoor Unit And The First Manifold
GREE GMV5 DC Inverter VRF Units The pipeline between outdoor units should be installed as follows: 5.5 Fitting pipe between Outdoor Unit and the First Manifold 1. For single module system, pipe size (between outdoor unit and the first manifold) is determined...
Page 57 GREE GMV5 DC Inverter VRF Units Pipe size of basic outdoor module is shown as follows: Pipe between ODU and the first branch of IDU Basic Module Gas Pipe mm(inch) Liquid Pipe mm(inch) Φ19.05(3/4) Φ9.52(3/8) GMV-72WM/B-F(U) GMV-72WM/B-U(U) Φ22.2(7/8) Φ9.52(3/8) GMV-96WM/B-F(U) GMV-96WM/B-U(U) Φ28.6(1-1/8)
Page 58 GREE GMV5 DC Inverter VRF Units 3. Fitting pipe between two manifolds from basic modules Pipe size (between two manifolds from basic modules) is based on the total capacity of upstream modules. Pipe size between manifolds Total capacity of upstream modules Q(Btu/h) Gas Pipe mm(in.)
Page 59 GREE GMV5 DC Inverter VRF Units Pipe between ODU and the first branch of IDU Total rated capacity of outdoor modules (multi-modular system) Gas pipe size mm(inch) Liquid pipe size mm(inch) Φ28.6(1-1/8) Φ12.7(1/2) GMV-144WM/B-F(U) GMV-144WM/B-U(U) Φ28.6(1-1/8) Φ15.9(5/8) GMV-168WM/B-F(U) GMV-168WM/B-U(U) Φ28.6(1-1/8) Φ15.9(5/8)
Page 60 GREE GMV5 DC Inverter VRF Units R410A Refrigerant System Total capacity of downstream indoor unit(s) C (KBtu/h) Model C＜68 FQ01A/A 68≤C≤102 FQ01B/A Y-type Manifold 102＜C≤239 FQ02/A 239＜C FQ03/A C≤136 FQ14/H1 C≤232 T- type Manifold FQ18/H1 232＜C FQ18/H2 6. Fitting pipe between manifolds Pipe size (between two manifolds at indoor unit side) is based on the total capacity of upstream indoor unit(s).
Page 61: Pipe Installation And Insulation
GREE GMV5 DC Inverter VRF Units 7. Fitting pipe between indoor unit and manifold Manifold should be matched with fitting pipe of indoor unit. Pipe between indoor branch and IDU Rated capacity of indoor unit C(Btu/h) Gas Pipe mm(in.) Liquid Pipe mm(in.) Φ9.52(3/8)
Page 62 GREE GMV5 DC Inverter VRF Units the pipe at the front of the air outlet. The refrigerant pipe cannot connect to any part of the unit except the joint points. If the preceding principles are not followed, performance of the unit will be affected and running noises will be increased.
Page 63 GREE GMV5 DC Inverter VRF Units Allowable deviation: Skewness of the cross section cannot exceed 1% of the copper pipe caliber. If the copper pipe is not used immediately after cut-off, cover it with a sealing cap or adhesive tape.
Page 64 GREE GMV5 DC Inverter VRF Units Requirements on pipe flaring are as follows: (1) End faces of the copper pipe are smooth. (2) Burrs and turnups inside the pipe opening must be cleared. (3) Install flaring nuts in the pipe before pipe flaring.
Page 65 GREE GMV5 DC Inverter VRF Units  If the foot pedal is 2 m (6.5feets) or more from the ground, there must be three points of support.  The foot pedal must be tightened securely with the ladder.  Do not perform operations on the top of the ladder.
Page 66 GREE GMV5 DC Inverter VRF Units A: External Diameter of the Pipe B: Minimum Insertion Depth D-A: Gap between Pipes Φ6.35 Φ1/4 0.24 Φ9.52 Φ3/8 0.05-0.21 0.002-0.008 0.28 Φ12.7 Φ1/2 Φ15.8 Φ5/8 0.32 Φ19.05 Φ3/4 0.05-0.27 0.002-0.01 Φ22.2 Φ7/8 0.39 Φ25.4...
Page 67 GREE GMV5 DC Inverter VRF Units 2) Vertical installation: The direction can be upwards or downwards. Three ports must be on the same elevation without inclination. 3) The length of a straight pipe between two manifolds cannot be less than 500 mm (19.7in.).
Page 68 GREE GMV5 DC Inverter VRF Units Branches of a manifold must be laid parallel and cannot be wrapped in superimposed mode. (6) T-type manifold can be laid in the following ways: 1) T-type manifold must be installed horizontally with inclination.
Page 69 GREE GMV5 DC Inverter VRF Units 3) The length of a straight pipe between the T-type manifold pipe and the IDU cannot be less than 500 mm (19-11/16in.). 4) Suspend the header to the ceiling and be sure to install it so that the outlet pipes are horizontal at the lower side.
Page 70 Then insert the copper pipe to proper depth. A concave bag for positioning is available to the manifold purchased from Gree. (9) Because the manifold structure is complex, perform with care to ensure tight insulation.
Page 71 GREE GMV5 DC Inverter VRF Units 6.1.3.7 Pipe Cleaning by Nitrogen Before connecting the flare opening of the pipe to the IDU, connect the pressure regulator valve on the nitrogen cylinder to the liquid pipe in the outdoor pipe system. Regulate the nitrogen pressure to about 5 kgf/cm²...
Page 72: Pipe Installation For The Condensate Water System
GREE GMV5 DC Inverter VRF Units  When installing and moving the air conditioner to another site, be sure to make recharge refrigerant after perfect evacuation. As the piping for the VRF system is complex, it is recommended that a filter is installed for the gas pipe and a drier is installed for the liquid pipe during construction.
Page 73 GREE GMV5 DC Inverter VRF Units (3) Condensate drain pipe should be connected into special drain system for air conditioner. (4) Determine the direction and elevation of a condensate water pipe before installing it. Avoid overlapping it with other pipes to ensure straight inclination. The clamp of the pipe hanger is fixed outside the insulation layer.
Page 74 GREE GMV5 DC Inverter VRF Units 6.2.3 Other Requirements (1) Ensure an inclination degree of more than 1% when connecting the drain pipe to the IDU. Unit:mm (in.) (2) When connecting the drain pipe to that of the IDU, fix the pipes with the bands provided upon delivery instead of using the glue to facilitate further maintenance.
Page 75: Requirements On Independent Drainage For Each Idu
GREE GMV5 DC Inverter VRF Units 5) Apply insulation materials to the condensate water pipe joints to prevent dewing. d. Insulation for connection between the drain pipe and that of the IDU is shown in the following figure. (2) Drain Pipe Installation for IDU 1) Use pipe clips instead of applying glue to connect the hoses provided upon delivery and plastic pipes on the device.
Page 76: Requirements On Centralized Drainage For Idus
GREE GMV5 DC Inverter VRF Units 6.4. Requirements on Centralized Drainage for IDUs (1) When there are multiple IDUs in the same building, centralized drainage is adopted. (2) When a header pipe is used, the drain pipe of each IDU must be higher than the header pipe.
Page 77: Electric And Controller Installation
GREE GMV5 DC Inverter VRF Units 6.4.2 Insulation for the Condensate Water Pipe System 6.4.2.1 Thickness of the Insulation Layer Thickness of the insulation layer for the condensate water pipe must be greater than 10 mm (0.39inch). 6.4.2.2 Bond the insulation material joints with special glue and then wrap them with plastic adhesive.
Page 78: Precautions
GREE GMV5 DC Inverter VRF Units breaker is installed, it may cause an electric shock.  Do not use anything other than breaker and fuse with correct capacity. Using fuse and wire or copper wire with too large capacity may cause a malfunction of unit or fire.
Page 79: Installation Of The Power Cable
GREE GMV5 DC Inverter VRF Units 7.2 INSTALLATION OF THE POWER CABLE 7.2.1 Precautions (1) The air conditioning unit is category 1 electrical appliance which requires reliable grounding.  Be sure to have authorized electrical engineers do the electric work using special circuits in accordance with regulations and this installation manual.
Page 80 GREE GMV5 DC Inverter VRF Units 7.2.2 Requirements on Power Cable Configuration Configure a circuit breaker to each unit for short circuit and overload protection. In addition, configure a general circuit breaker to both the indoor and ODUs to switch on or switch off the general power of the IDU or ODU.
Page 81 GREE GMV5 DC Inverter VRF Units (2) External Connection for Modularly Connected Units  Indoor Unit ground Lines are required for preventing electrical shock accident during current leakage, Communication disorder by noise effect and motor current leakage (without connection to pipe).
Page 82 GREE GMV5 DC Inverter VRF Units 7.2.3 Procedure for Installing the Power Cable (1) Knock off the knockouts used for threading the external power cable, fit the threading rubber ring to the hole, and thread the power cable through the hole. Connect L1, L2, L3, of the power cable, and the grounding cable to L1, L2, L3, on the power terminal block and the grounding screw next to the terminal block respectively.
Page 83: Installation Of The Communication System
7.3 INSTALLATION OF THE COMMUNICATION SYSTEM The CAN communication network is adopted for GMV5 VRF system. Manual DIP or identification on polarities of the communication power is not required for the IDU. Only the function DIP needs to be set for the ODU.
Page 84 GREE GMV5 DC Inverter VRF Units 7.3.2 Connection of Communication Cables The communication bus of indoor and ODUs must be connected in series instead of in star mode. The last IDU of the bus shall be connected to a matching resistor (placed in the package of the ODU).
Page 85 GREE GMV5 DC Inverter VRF Units 7.3.3 Communication Cable Connection Method and Procedure 7.3.3.1 Communication cable connection between the IDUs and ODUs The communication cable between the IDUs and ODUs is connected via interface D1/D2 on the terminal block XT2. Connection modes for the single-module system and multi-module system are shown in the following figures.
Page 86 GREE GMV5 DC Inverter VRF Units NOTICE! ① If there are multiple modules for the modular ODU, the master unit must be the first ODU module on the communication cable and cannot be connected to the IDU. (The master unit is set by SA8 on the main board of the ODU.)
Page 87 GREE GMV5 DC Inverter VRF Units One wired controller controlling multiple IDUs Two wired controllers controlling 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 88 GREE GMV5 DC Inverter VRF Units Below are user’s parameter settings: Parameter Parameter Default Parameter scope Remark code name value Set up 01: master wired When 2 wired controllers control one or more address for controller IDUs, they shall have different addresses.
Page 89: Vacuumization And Desiccation For The Refrigerant System
GREE GMV5 DC Inverter VRF Units 8 VACUUMIZATION AND DESICCATION FOR THE REFRIGERANT SYSTEM Works for the refrigerant system include cleaning and desiccating the pipes, performing an air-tightness test, and perfusing refrigerant. 8.1 AIR-TIGHTNESS TEST 8.1.1 Importance of the Air-tightness Test Air-tightness of the multi-module air conditioning system mainly refers to the tightness of the refrigerant pipes, which ensures secure and reliable running of the air conditioner.
Page 90: Vacuumization And Desiccation For The System
GREE GMV5 DC Inverter VRF Units wrapping at the welding or flaring opening joints of the IDU. The pressure must be increased simultaneously for pipes on outdoor sides and cannot be increased for pipes on one side.  Before performing the air-tightness test, do not conduct insulation or wrapping at the welding joints，Otherwise, leak source cannot be detected quickly.
Page 91: Refrigerant Perfusion
GREE GMV5 DC Inverter VRF Units 8.2.2.2 Precautions: (1) The gas pipe and liquid pipe must be vacuumized at the same time. (2) Turn off the valve before powering off the vacuum pump. (3) Keep vacuuming for 2 hours. The vacuum meets the requirement if the pressure displayed by the vacuum gauge does not increase.
Page 92 GREE GMV5 DC Inverter VRF Units (2) ∑Refrigerant charging amount B of every module Refrigerant charging amount B of Rated Capacity(1000Btu/h) every module kg(Pounds) IDU/ODU rated Quantity of capacity collocation included ratio C IDUs(N) N＜4 1.5(3.3) 50%≤C≤90% N≥4 0.5(1.1) 0.5(1.1) 0.5(1.1)
Page 93 GREE GMV5 DC Inverter VRF Units Quantity of refrigerant added to liquid pipe per meter) = 5kg (11pounds). R (Quantity of added refrigerant in total) = 5+0=5kg (11+0=11pounds). Modular combination of outdoor unit subjects to combinations that is currently available.
Page 94: Method For Perfusing Refrigerant
GREE GMV5 DC Inverter VRF Units 9.2 METHOD FOR PERFUSING REFRIGERANT Refrigerant perfusion for the VRF system is classified into pre-perfusion and perfusion during running. 9.2.1 Refrigerant Pre-perfusion Step 1: Connect the high pressure gauge pipe to the detection opening of the liquid pipe, the low pressure gauge pipe to the detection opening of the gas pipe, and the medium gauge pipe to the vacuum pump.
Page 95 GREE GMV5 DC Inverter VRF Units Step 5: Turn on the valve of the high pressure gauge (while keep the valve of the high pressure gauge turned off) and then perfuse refrigerant to the system. Record the change of weight of the refrigerant tank.
Page 96 GREE GMV5 DC Inverter VRF Units Step 2: Turn on the valves for the liquid and gas pipes of each module completely. For the modular unit, the oil-equalizing valve of each module also needs to be turned on. Step 3: Make the system to run in commissioning mode via the commissioning software or the main board of the ODU.
Page 97: Chapter 3 Commissioning Operation
Rule-breaking operations are prohibited. 1.2 PRECAUTIONS FOR THE USE OF REFRIGERANTS The GMV5 serial unit is a refrigerating system of R410A working substances. Pay attention to the following points:  The refrigerating system of R410A working substances has a higher working pressure than that of R22 working substances.
Page 98 GREE GMV5 DC Inverter VRF Units Name Meaning Factory Settings Remark Switch SA1_ca Capacity DIP Defines the rated Defined based on The factory settings cannot be changed. pacity switch capacity of the unit. the model. Defines and differentiates The address DIP switch is used only when...
Page 99 GREE GMV5 DC Inverter VRF Units Meanings and setting methods of function DIP switches are as follows: 1.3.1.1 Unit Capacity DIP Switch (SA1_capacity) The unit capacity DIP switch (SA1_capacity) has been set upon factory departure. It is unnecessary to further set the DIP switch. In addition, users are not allowed to change the DIP switch settings.
Page 100 GREE GMV5 DC Inverter VRF Units 6) Suppose the centralized control address (SA2-Addr-CC) of the master unit for one GMV system is set to “1 1 1 1 X”, this system is the master mode system and its running mode will take the priority.
Page 101 GREE GMV5 DC Inverter VRF Units Precautions: ① When the DIP switch setting is not covered in the above scope, a DIP switch setting exception fault may occur. ② Only one compressor can be set to emergency mode on a module.
Page 102 GREE GMV5 DC Inverter VRF Units Precautions: ① When the DIP switch setting is not covered in the above scope, a DIP switch setting exception fault may occur. ② Only one compressor can be set to emergency mode on a module.
Page 103 GREE GMV5 DC Inverter VRF Units (2) When it is required to set the fan to emergency mode, set the DIP switch as follows: Fan Emergency Operation DIP Switch (SA5_FAN-E) DIP1 DIP2 Remark No fan in emergency operation mode Shielding the operation of 1# fan...
Page 104 GREE GMV5 DC Inverter VRF Units Precautions: ① When the DIP switch setting is not covered in the above scope, a DIP switch setting exception fault may occur. ② A module must be set to master unit status, and only one module can be set to master unit status in each refrigerating system.
Page 105 GREE GMV5 DC Inverter VRF Units 1.3.2.1 Introduction to Function Buttons  When function buttons are used to set functions for outdoor unit, the cover of electric box and panel must be assembled well. Setting can only be done through the maintenance window. Otherwise, electric shock may occur.
Page 106 GREE GMV5 DC Inverter VRF Units Factory Settings Function Function Function Meaning Remark Code Name Code Meaning Indoor unit Prevents IDU project number conflicts when It can only —— —— project different refrigerating systems are controlled in a be set.
Page 107 GREE GMV5 DC Inverter VRF Units 2) A6 Unit cooling/heating function This function sets operation modes of the entire unit, including: Function Mode of ODU Operation Mode of IDU Code Name Cooling mode, dehumidifying mode, heating mode, and air supply mode.
Page 108 GREE GMV5 DC Inverter VRF Units  After silent mode is set, unit’s cooling and heating capacity will be lowered correspondingly. Please be noted. 4) A8 Aftersales vacuuming mode This function ensures the vacuum degree of the entire system during maintenance to prevent operation functions of dead zones.
Page 109 GREE GMV5 DC Inverter VRF Units This function queries addresses of all IDUs through one operation of the ODU. 12) n9 Online IDU quantity query This function queries the number of online IDUs through the ODU. 1.3.3 Function Setting Operations Step 1: Open the commissioning window of the master unit panel.
Page 110 GREE GMV5 DC Inverter VRF Units LED1 LED2 LED3 Function Code Display Mode Silent Mode Code Display Mode Current Status Display Mode Blinking Blinking Step 2: Select a corresponding silent mode by pressing "SW1 (UP)" or "SW2 (DOWN)". LED1 LED2...
Page 111 GREE GMV5 DC Inverter VRF Units LED1 LED2 LED3 ODU Function ODU Function Function Code Display Mode Display Mode Display Mode Mode Code Mode Code Blinking Blinking Step 2: Select a corresponding cooling/heating function by pressing "SW1 (UP)" or "SW2 (DOWN)".
Page 112 GREE GMV5 DC Inverter VRF Units LED3 shows the low-pressure value of a module. If the value is negative, LED3 circularly displays the negative code "nE” and the numeric value every one second. For example, for -30  C, LED3 alternately displays “nE”...
Page 113 GREE GMV5 DC Inverter VRF Units Step 2: Press "SW7" to confirm entering the to-be-confirmed status of system vacuuming mode settings. All modules are displayed as follows: LED1 LED2 LED3 Function Code Display Mode Current Progress Display Mode Current Status...
Page 114 GREE GMV5 DC Inverter VRF Units Step 1: Confirm entering the n4 highest capacity output limitation settings. The master unit is displayed as follows: LED1 LED2 LED3 Function Code Display Mode Highest Output Capacity Display Mode Current Status Display Mode...
Page 115 GREE GMV5 DC Inverter VRF Units LED1 LED2 LED3 Function Display ODU Function Mode Display ODU Function Mode Display Code Mode Code Mode Code Mode LED2 LED3 Function Code Display Mode Current Progress/Mode Display Mode Current Status Display Mode Blinking...
Page 116 GREE GMV5 DC Inverter VRF Units default. Up to five historical faults can be queried. The faults that can be queried are as follows: Code Code Current detection circuit failure of inverter High-pressure protection compressor driver Low-pressure protection Inverter compressor out-of-step protection...
Page 117 GREE GMV5 DC Inverter VRF Units LED1 LED2 LED3 Function Code Display Mode Module Address Display Mode Current Status Display Mode Blinking Blinking Blinking Blinking Blinking Blinking Blinking Blinking Select a module for parameter query by pressing "SW1 (UP)" or "SW2 (DOWN)" and then press "SW7".
Page 118 GREE GMV5 DC Inverter VRF Units Parameter Code Parameter Name Unit Remark Outdoor unit heating EXV2 Subcooler EXV Defrosting temperature ° C Liquid-extracting temperature of subcooler ° C Outlet temperature of accumulator ° C This parameter is invalid for the Oil return temperature °...
Page 119 GREE GMV5 DC Inverter VRF Units Entire-unit bar code (bits 1-13) and controller bar code (bits 1-13), that is, entire-unit bar code header → entire-unit bar code (bits 1-6) → entire-unit bar code (bits 7-12) → entire-unit bar code (bit 13) →...
Page 120 GREE GMV5 DC Inverter VRF Units Step 4: In query status, press "SW4" to quit. 1.3.5. Basic Operations for Engineering Commissioning 1.3.5.1 Basic Operations Basic Operations Operation Method Remark Starting engineering Press and hold "SW7" on the master —— commissioning unit for more than five seconds.
Page 121: Commissioning Process
① It is forbidden to directly connect the compressor with power supply and forcibly power it on during commissioning and maintenance. ② Engineering commissioning operations must be performed on the GMV5 serial unit. Otherwise, the unit cannot properly run. ③ Before commissioning is completed, the main board of ODU displays "module address 0F A0"...
Page 122: Engineering Commissioning Procedures
(1) Make sure that the following tools or instruments are prepared before commissioning. (2) Make sure that the commissioning software is correct before commissioning. (3) The professional aftersales commissioning software provided by GREE should be used for commissioning of GREE VRF system.
Page 123 GREE GMV5 DC Inverter VRF Units Does the stop valve of outdoor unit reach the maximum opening degree? 2) Check system refrigerants before startup Before the system is started, connect the liquid-tube valve of ODU with a high pressure gauge and the air-tube valve of ODU with a low pressure gauge, and then read their values.
Page 124 GREE GMV5 DC Inverter VRF Units High Pressure Pressure Gauge Gauge Detection Valve Low- pressure Detection Valve 2.3.2.3 Electrical System Check 1) Check for high electromagnetic interference, dusts, and acidic or alkaline gas in the unit environment. a. The air conditioning unit can neither share the same power supply system with the equipment containing variable-frequency drives, nor reside near the equipment generating high electromagnetic interference.
Page 125 GREE GMV5 DC Inverter VRF Units a1. Air switches work for overload and short-circuit protection. Air switches provide a less breaking current than fuse links and air switches react more slowly than fuse links. The advantage of air switches is that they can be manually reset after a protection action.
Page 126 GREE GMV5 DC Inverter VRF Units 2.3.2.4 Communication System Check 1) The following communication contents must be checked again before commissioning: Do main boards correctly communicate with each other between outdoor unit modules? Are DIP switches of the master outdoor unit correctly set?
Page 127 GREE GMV5 DC Inverter VRF Units Spot Check for GMV5 Commissioning Spot Check Item Qualified Do the circuit breaker and leakage switch comply with unit design requirements? Is the spacing between the power cable and the TV set larger than 1 m?
Page 128 GREE GMV5 DC Inverter VRF Units according to the environment temperature: Cooling mode when the outdoor environment temperature is higher than 20° C(68℉). Heating mode when the outdoor environment temperature is lower than 20° C(68℉). (3) Before starting commissioning, make sure again that stop valves of all basic modules of the ODU have been completely opened.
Page 129 GREE GMV5 DC Inverter VRF Units Progress Description for Commissioning Phases —— Commissioning Code Progress Code Status Code LED1 LED2 LED3 Meaning Displa Progress Display Display Code Code Code Status Status Status LED3 displays the module 01-04 Blinking quantity, which should be...
Page 130 GREE GMV5 DC Inverter VRF Units Progress Description for Commissioning Phases —— Commissioning Code Progress Code Status Code LED1 LED2 LED3 Meaning Displa Progress Display Display Code Code Code Status Status Status The system gives a prompt if the compressor preheating period is less than eight hours.
Page 131 GREE GMV5 DC Inverter VRF Units Progress Description for Commissioning Phases —— Commissioning Code Progress Code Status Code LED1 LED2 LED3 Meaning Displa Progress Display Display Code Code Code Status Status Status The system is in heating-mode commissioning operation (the...
Page 132 GREE GMV5 DC Inverter VRF Units Step 2: In power-off status of ODU, set the ODU to a corresponding static pressure mode according to static pressure design requirements for outdoor engineering. For details about the setting method, see the "Outdoor Fan Static Pressure Setting DIP Switch (SA6_ESP_S)" section. If there are not static pressure requirements, retain the factory settings.
Page 133 GREE GMV5 DC Inverter VRF Units Step 7: Wait for the unit to automatically operate commissioning steps 01 and 02. Exception 1: If the master unit is incorrectly set in step 01, the following faults are displayed in step Commissioning...
Page 134 GREE GMV5 DC Inverter VRF Units  It is very important to correctly confirm the number of ODUs. If the confirmed quantity is inconsistent with the actual quantity, the system may improperly run. Step 8: When the unit runs to step 04, users need to manually confirm the number of indoor modules.
Page 135 GREE GMV5 DC Inverter VRF Units Commissioning Code Progress Code Status Code Progress LED1 LED2 LED3 Meaning Code Display Status Code Display Status Code Display Status The system detects communication failure between master unit and inverter compressor driver. The system detects...
Page 136 GREE GMV5 DC Inverter VRF Units Commissioning Code Progress Code Status Code LED1 LED2 LED3 Meaning Progress Code Display Status Code Display Status Code Display Status 07_Component The system detects that no IDU detection for component fails and automatically enters the next step.
Page 137 GREE GMV5 DC Inverter VRF Units Commissioning Code Progress Code Status Code Progress LED1 LED2 LED3 Meaning Code Display Status Code Display Status Code Display Status The system detects that 09_Pre-startup refrigerants are normal and refrigerant automatically enters the next detection step.
Page 138 GREE GMV5 DC Inverter VRF Units To avoid enabling the unit before all preparations are completed, it is required to confirm again whether to enable the unit. If the master unit is displayed as follows, it indicates that the unit is waiting for enabling confirmation.
Page 139 Step 20: Deliver the unit for use and let users know the precautions. (2) Commissioning Through the Commissioning Software Step 1: Install commissioning software to the computer and connect monitoring communication cables (for details about the operation method, see the "GREE Central Air Conditioning Commissioning Software" section).
Page 140 GREE GMV5 DC Inverter VRF Units Step 2: Completely cover the front panel of ODU. Step 3: In power-off status of ODU, set the ODU to a corresponding static pressure mode according to static pressure design requirements for outdoor engineering. For details about the setting method, see the "Outdoor Fan Static Pressure Setting DIP Switch (SA6_ESP_S)"...
Page 141 GREE GMV5 DC Inverter VRF Units For the phase with "OK" displayed, a manual confirmation is required for entering the next commissioning step. Click " " to display relevant information detected on this phase, which provides references for selection. Click "Close" to close the information (the number of commissioning units is displayed in "3 Confirm ODU Basic Module NO."...
Page 142 GREE GMV5 DC Inverter VRF Units " " indicates that commissioning is not passed on the phase and troubleshooting is required (after troubleshooting, the unit automatically enters the next step if no "OK" exists or click "OK" to enter the next step). Click "...
Page 143 GREE GMV5 DC Inverter VRF Units Startup". When an exception occurs in step 10, click "Back" to return to step 9 and then click "OK" in step 9 to perform commissioning again for step 10. If a U6 fault (valve exception) occurs in step 10, users can click "Skip"...
Page 144 GREE GMV5 DC Inverter VRF Units Note: During commissioning, users must listen to the operating sound of outdoor and indoor fans and compressors to check for exceptions. (3) Commissioning Through the Portable Commissioning Tool Step 1: Connect the Portable Commissioning Tool. Please refer to the operation manual of Portable Commissioning Tool for the connection method.
Page 145 GREE GMV5 DC Inverter VRF Units Step 5: Once it entered the engineering debugging, Portable Commissioning Tool will display current progress of engineering debugging (step#). As for step 3, 4, 8 and 12, it needs to click “OK” button to enter into the next step debugging. “Skip” can be selected for step 10. Detailed information check is available for step 3, 4, 5, 6 and 7.
Page 146: References For Proper Unit Operation Parameters
GREE GMV5 DC Inverter VRF Units 2.4 REFERENCES FOR PROPER UNIT OPERATION PARAMETERS Commissioning Item Parameter Name Unit Reference Value ° C/ Outdoor environment —— ℉ temperature ●When the system compressor is running, the normal discharge pipe or top temperature for cooling is 70-95° C(167-203℉), which is more than 10°...
Page 147: Chapter 4 Maintenance
GREE GMV5 DC Inverter VRF Units CHAPTER 4 MAINTENANCE 1 SYSTEM FAILURE CODE TABLE Indoor: Error Code Content Error Code Content Malfunction of lower water temperature Malfunction of IDU sensor of water tank Malfunction of ambient temperature Protection of indoor fan...
Page 148 GREE GMV5 DC Inverter VRF Units Outdoor: Error Code Content Error Code Content Malfunction of ODU PCB of wired controller is abnormal Current sensor of compressor 2 is High-pressure protection abnormal Current sensor of compressor 3 is Discharge low-temperature protection...
Page 149 GREE GMV5 DC Inverter VRF Units Error Code Content Error Code Content compressor return 3 Malfunction of temperature sensor of oil Drive PFC protection of compressor return 4 Over-current protection of inverter Malfunction of driving board of fan compressor Drive IPM module protection of...
Page 150 GREE GMV5 DC Inverter VRF Units Debugging: Error Code Content Error Code Content Alarm because ODU quantity is Preheat time of compressor is insufficient inconsistent Wrong setting of ODU’s capacity Abnormal communication of converter code/jumper cap Power supply phase sequence protection...
Page 151 GREE GMV5 DC Inverter VRF Units Status: Error Code Content Error Code Content Unit waiting for debugging Shielding status Refrigerant recovery operation of SE operation setting of system after-sales Defrosting Compulsory defrosting Limit setting for max. capacity/output Oil-return capacity Compulsory excursion of engineering...
Page 152: Exception And Troubleshooting
GREE GMV5 DC Inverter VRF Units 2 EXCEPTION AND TROUBLESHOOTING 2.1 How to locate a faulty IDU promptly Use the IDU project number enquiry and faulty IDU locating function to locate a faulty IDU or wired controller's corresponding IDU as follows when multiple IDUs are running in one place:...
Page 153: Form Analyzing
GREE GMV5 DC Inverter VRF Units NOTE: ① If the enquired IDU is normal, no fault code will be displayed in the temperature area; if the unit indoor has multiple faults, fault codes will be displayed in the temperature area at an interval of 3 seconds.
Page 154 GREE GMV5 DC Inverter VRF Units Fault code Fault Possible reasons Solution 1) Check if the cable connecting the control board and the compressor's drive board is loose. If yes, reconnect it; 1. The communication cable is not 2) Check if the cable connecting the control board Communication connected.
Page 155 GREE GMV5 DC Inverter VRF Units Fault code Fault Possible reasons Solution The SA8 dial switch of the ODU is 1. Switch the SA8 dial switch of an ODU to 00; not switched to 00. No controlling unit 2. Replace the control board or switch an ODU's The SA8 dial switch of the ODU is SA8 dial switch to 00.
Page 156 GREE GMV5 DC Inverter VRF Units 2) Solution of project number conflict: ① Manual setting on the commissioning software: Use the commissioning software to set IDUs' project numbers separately in every system or reset projects numbers in multiple systems. Choose Setting -> Parameter Settings, as shown in Figure 2: Figure 2 If project commissioning is finished and the IDU where the conflict occurs needs to be set separately.
Page 157 GREE GMV5 DC Inverter VRF Units Choose one IDU in the conflicting IDU box shown in Figure 3 and click Set in the setting box. Choose a value in the pop-up box shown in Figure 4 and click Set. Figure 4...
Page 158 GREE GMV5 DC Inverter VRF Units If project commissioning is not finished and all the IDUs' project numbers need to be reset, click Set All IDUs Project Number shown in Figure 2. As shown in Figure 6, the pop-up box comprises two parts: Systems Selection, where you can choose the system to be reset;...
Page 159 GREE GMV5 DC Inverter VRF Units LED1 LED2 LED3 Function Code LED Status Progress LED Status Status LED Status Flicker Flicker Flicker Flicker Flicker Flicker Flicker Flicker Flicker Flicker Flicker Flicker (2) Press SW2 (▼) on the controlling unit and select n5. Short press SW7 to show the following...
Page 160 GREE GMV5 DC Inverter VRF Units Fault Fault Possible reasons Solution code 1. The compressor drive board is faulty; Compressor drive IPM 1. Replace the compressor drive board; 2. Thermal gel is not applied evenly over-temperature 2. Apply thermal gel evenly on the IPM module;...
Page 161: System Faults
GREE GMV5 DC Inverter VRF Units Fault Fault Possible reasons Solution code connected with the compressor drive diagram; board; 3. Replace the fan drive board. 3. The fan drive board is faulty. Fan drive current 1. The fan drive board is faulty.
Page 162 GREE GMV5 DC Inverter VRF Units Possible reasons Primary reason Secondary reason Tertiary reason Fault Fault Solution code Confirmati Confirmation Confirmation Description Description Description method method method with the difference is 3.2 The air reference large or part of Replace and ——...
Page 163 GREE GMV5 DC Inverter VRF Units Possible reasons Primary reason Secondary reason Tertiary reason Fault Fault Solution code Confirmati Confirmation Confirmation Description Description Description method method method When the 1.2.1 The system is control wire Connect the working of the...
Page 164 GREE GMV5 DC Inverter VRF Units Possible reasons Primary reason Secondary reason Tertiary reason Fault Fault Solution code Confirmati Confirmation Confirmation Description Description Description method method method temperature and the Replace the 2.2.2 The high-pressure body of the —— valve body is...
Page 165 GREE GMV5 DC Inverter VRF Units Possible reasons Fault Primary reason Secondary reason Tertiary reason Fault Solution code Confirmation Confirmatio Description Description Confirmation method Description method n method 2.4.1 The Replace and Touch the pipe along block is solder the...
Page 166 GREE GMV5 DC Inverter VRF Units Possible reasons Fault Primary reason Secondary reason Tertiary reason Fault Solution code Confirmation Confirmatio Description Description Confirmation method Description method n method 5.1.2 The connect wire between the Reconnect —— —— pressure them with the switch and wire.
Page 167 GREE GMV5 DC Inverter VRF Units Possible reasons Fault Primary reason Secondary reason Tertiary reason Fault Solution code Confirmation Confirmatio Description Description Confirmation method Description method n method Check the necessary amount of Incorrect refrigerant and 7. Too much quantity of discharge ——...
Page 168 GREE GMV5 DC Inverter VRF Units Possible reasons Fault Primary reason Secondary reason Tertiary reason Fault Solution code Confirmation Confirmatio Description Description Confirmation method Description method n method difference. The difference is large or part of the pipe is frosting.
Page 169 GREE GMV5 DC Inverter VRF Units Possible reasons Fault Primary reason Secondary reason Tertiary reason Fault Solution code Confirmation Confirmatio Description Description Confirmation method Description method n method 6.1.1 The power Reconnect cable Manual the motor connecting the check with the motor and main power cable.
Page 170 GREE GMV5 DC Inverter VRF Units 2.3.3 Poor cooling/heating performance Possible reasons Feedback Primary reason Secondary reason Tertiary reason Exception Solution from user Confirmatio Confirmatio Descriptio Confirmatio Description Description n method n method n method 1. The stop valve of the...
Page 171 GREE GMV5 DC Inverter VRF Units Possible reasons Feedback Primary reason Secondary reason Tertiary reason Exception Solution from user Confirmatio Confirmatio Descriptio Confirmatio Description Description n method n method n method higher than 40° C. 3.3.1 The 3.3 The system...
Page 172 GREE GMV5 DC Inverter VRF Units Exception Analyzing and Troubleshooting 2.3.4 2.3.4.1 “A0” Unit debug status Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: This code is status code. When the engineering debugging is not completed, the unit will display this code, at this time, the unit cannot startup for operation.
Page 173 GREE GMV5 DC Inverter VRF Units 2.3.4.5 “A6” Cooling and heating function setting status Error display: ODU mainboard will display Error judgment condition and method: This code is status code, which means the system has entered into cooling and heating function setting status.
Page 174 GREE GMV5 DC Inverter VRF Units Possible reason：—— Troubleshooting: status code, no troubleshooting. 2.3.4.10 “AF” Supply air status Error display: ODU mainboard will display Error judgment condition and method: This code is status code, which means the system has entered into supply air mode, at this time, all IDUs can only be operated under supply air mode.
Page 175 GREE GMV5 DC Inverter VRF Units Error judgment condition and method: This code is status code, which means the unit has been long-distance controlled as emergency stop status, unless the status is removed, otherwise, you cannot start up the unit for operation.
Page 176 GREE GMV5 DC Inverter VRF Units ■Temperature sensor is abnormal ■Detecting circuit is abnormal Troubleshooting: 2.3.4.18 “b2” Defrost temperature sensor 1 error Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: Sample the AD value of temperature sensor through temperature sensor detecting circuit and judge the range of AD value;...
Page 177 GREE GMV5 DC Inverter VRF Units 2.3.4.19 “b3” Defrost temperature sensor 2 error Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: Sample the AD value of temperature sensor through temperature sensor detecting circuit and judge the range of AD value;...
Page 178 GREE GMV5 DC Inverter VRF Units Troubleshooting: 2.3.4.20 “b4” Malfunction of liquid temperature sensor of sub-cooler Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: Sample the AD value of temperature sensor through temperature sensor detecting circuit and judge the range of AD value;...
Page 179 GREE GMV5 DC Inverter VRF Units Troubleshooting: 2.3.4.21 “b5” Malfunction of gas temperature sensor of sub-cooler Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: Sample the AD value of temperature sensor through temperature sensor detecting circuit and judge the range of AD value;...
Page 180 GREE GMV5 DC Inverter VRF Units Troubleshooting: 2.3.4.22 “b6” Malfunction of inlet tube temperature sensor of vapor liquid separator Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: Sample the AD value of temperature sensor through temperature sensor detecting circuit and judge the range of AD value;...
Page 181 GREE GMV5 DC Inverter VRF Units Troubleshooting: 2.3.4.23 “b7” Malfunction of exit tube temperature sensor of vapor liquid separator Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: Sample the AD value of temperature sensor through temperature sensor detecting circuit and judge the range of AD value;...
Page 182 GREE GMV5 DC Inverter VRF Units Troubleshooting: 2.3.4.24 “b8” Malfunction of outdoor humidity sensor Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: Sample the AD value of temperature sensor through temperature sensor detecting circuit and judge the range of AD value;...
Page 183 GREE GMV5 DC Inverter VRF Units Troubleshooting: 2.3.4.25 “b9” Malfunction of gas temperature sensor of heat exchanger Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: Sample the AD value of temperature sensor through temperature sensor detecting circuit and judge the range of AD value;...
Page 184 GREE GMV5 DC Inverter VRF Units Troubleshooting: 2.3.4.26 “bA” Malfunction of oil-return temperature sensor Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: Sample the AD value of temperature sensor through temperature sensor detecting circuit and judge the range of AD value;...
Page 185 GREE GMV5 DC Inverter VRF Units Troubleshooting: 2.3.4.27 “C0” IDU and ODU, IDU wired controller communication error Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: If no communication between ODU and IDU or between IDU and wired controller in continuous 30s, report the error.
Page 186 GREE GMV5 DC Inverter VRF Units 2.3.4.28“C2” main control and inverter compressor drive communication error Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: If ODU hasn’t received inverter compressor drive board data in continuous 30s, report the error.
Page 187 GREE GMV5 DC Inverter VRF Units Troubleshooting: 2.3.4.29 “C3” main control and inverter fan drive communication error Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: If ODU hasn’t received inverter fan drive board data in continuous 30s, report the error.
Page 188 GREE GMV5 DC Inverter VRF Units Troubleshooting: 2.3.4.30 “C4” IDU missing error Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: If ODU hasn’t received inverter fan drive board data in continuous 30s, report the error.
Page 189 GREE GMV5 DC Inverter VRF Units 2.3.4.31 “C5” IDU project code conflict Error display: debugging software and long-distance monitoring software will display Error judgment condition and method: Check IDU project code. All IDUs with the same project codes will report this error. But this error will be displayed and require elimination only when debugging software, central controller and long-distance monitoring software are connected.
Page 190 GREE GMV5 DC Inverter VRF Units Troubleshooting: 2.3.4.33 “C8” Compressor emergency operation status. Error display: ODU mainboard will display Error judgment condition and method: If any compressor in the module is set with emergency operation status, the mainboard will display “C8”...
Page 191 GREE GMV5 DC Inverter VRF Units Possible reason：—— Troubleshooting: status code, no troubleshooting. 2.3.4.36 “CH” Rated capacity ratio is too high Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: The system detects rated capacity of online IDUs and ODUs.
Page 192 GREE GMV5 DC Inverter VRF Units the network ■Detecting circuit is abnormal Troubleshooting: 2.3.4.39 “CF” Multiple master controlling units error Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: Mainboard detects the DIP switch (SA8) of master controlling unit to judge if it is master controlling unit.
Page 193 GREE GMV5 DC Inverter VRF Units 2.3.4.40 “CJ” System address code conflict Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: When multiple refrigerant system is connected through CAN2 network of unit mainboard, it is allowable to have only one master system in this network.
Page 194 GREE GMV5 DC Inverter VRF Units Troubleshooting: Make sure there are two wired controllers in maximum to control one or several IDUs; when two wired controllers control one or several IDUs, enter wired controller parameter setting (P13) to set the address of one wired controller as 02, that is slave wired controller.
Page 195 GREE GMV5 DC Inverter VRF Units Possible reason： ■Address chip is abnormal ■Memory chip is abnormal. Replace main control board directly Troubleshooting: Replace main control board directly 2.3.2.44 “d3” Ambient temperature sensor error Error display: IDU wired controller and IDU receive light board will display...
Page 196 GREE GMV5 DC Inverter VRF Units ■Inlet pipe temperature sensor is abnormal ■Detecting circuit is abnormal Troubleshooting: 2.3.4.46 “d6” Outlet pipe temperature sensor error Error display: IDU wired controller and IDU receive light board will display Error judgment condition and method: Sample the AD value of temperature sensor through temperature sensor detecting circuit and judge the range of AD value.
Page 197 GREE GMV5 DC Inverter VRF Units 2.3.4.47 “d7” Humidity sensor error Error display: IDU wired controller and IDU receive light board will display Error judgment condition and method: Sample the AD value of temperature sensor through temperature sensor detecting circuit and judge the range of AD value.
Page 198 GREE GMV5 DC Inverter VRF Units Troubleshooting: 2.3.4.49 “dA” IDU network address error Error display: IDU wired controller and IDU receive light board will display Error judgment condition and method: Through testing the IDU address chip and IP address, if address chip cannot be read, IDU IP is 0 or IP is in conflict, report the error.
Page 199 GREE GMV5 DC Inverter VRF Units ■Communication of wired controller touch button board and display board IIC is abnormal; ■Read and write of wired controller memory chip IIC is abnormal (when memory chip is existed); Troubleshooting: 2.3.4.51 “dC” Capacity DIP switch setting error...
Page 200 GREE GMV5 DC Inverter VRF Units ■Poor contact between air outlet temperature sensor and terminal in mainboard interface ■Air outlet temperature sensor is abnormal ■Detecting circuit is abnormal Troubleshooting: 2.3.4.53 “db” Project debugging Error display: ODU mainboard, IDU wired controller and IDU receive light board will...
Page 201 GREE GMV5 DC Inverter VRF Units ■Refrigerant charging amount is too much; ■System pipeline is blocked; Troubleshooting:...
Page 202 GREE GMV5 DC Inverter VRF Units 2.3.4.55 “E2” Compressor low discharge temperature protection Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: Test the compressor discharge temperature and high pressure value. If the difference between discharge temperature and high pressure value is lower than 10℃, the unit will stop for protection.
Page 203 GREE GMV5 DC Inverter VRF Units 2.3.4.56 “E3” System low pressure protection Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: Test compressor suction pressure through low pressure sensor. When pressure value is lower than -41℃, the unit will stop for protection.
Page 204 GREE GMV5 DC Inverter VRF Units Troubleshooting: E3 system low pressure protection The low pressure sensor fails, Does the low pressure shown on the pressure gauge reach the Replace the pressure sensor protection value? Add refrigerant according to Is there enough refrigerant? the design and pipeline.
Page 205 GREE GMV5 DC Inverter VRF Units 2.3.4.57 “E4” Compressor high discharge temperature protection Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: Test the compressor discharge temperature through compressor discharge pipe and shell top temperature sensor.
Page 206 GREE GMV5 DC Inverter VRF Units Troubleshooting:...
Page 207 GREE GMV5 DC Inverter VRF Units 2.3.4.58 “F0” ODU mainboard error Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: Check if the reading of address chip, memory chip and clock chip of ODU mainboard is normal. If the data of address chip, memory chip and clock chip cannot be read, it is abnormal.
Page 208 GREE GMV5 DC Inverter VRF Units ■High pressure sensor is abnormal ■Detecting circuit of sensor is abnormal Troubleshooting: 2.3.4.60 “F3” Low pressure sensor error Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: Sample the AD value of low pressure sensor through sensor detecting circuit and judge the range of AD value;...
Page 209 GREE GMV5 DC Inverter VRF Units 2.3.4.61 “F5” Compressor 1 discharge temperature sensor error Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: Sample the AD value of temperature sensors through temperature sensors circuit and judge the range of AD value;...
Page 210 GREE GMV5 DC Inverter VRF Units Troubleshooting: 2.3.4.62 “F6” Compressor 2 discharge temperature sensor error Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: Sample the AD value of temperature sensors through temperature sensors circuit and judge the range of AD value;...
Page 211 GREE GMV5 DC Inverter VRF Units Troubleshooting: 2.3.4.63 “F7” Compressor 3 discharge temperature sensor error Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: Sample the AD value of temperature sensors through temperature sensors circuit and judge the range of AD value;...
Page 212 GREE GMV5 DC Inverter VRF Units Troubleshooting: 2.3.4.64 “F8” Compressor 4 discharge temperature sensor error Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: Sample the AD value of temperature sensors through temperature sensors circuit and judge the range of AD value;...
Page 213 GREE GMV5 DC Inverter VRF Units Troubleshooting: 2.3.4.65 “F9” Compressor 5 discharge temperature sensor error Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: Sample the AD value of temperature sensors through temperature sensors circuit and judge the range of AD value;...
Page 214 GREE GMV5 DC Inverter VRF Units Troubleshooting: 2.3.4.66 “FA” Compressor 6 discharge temperature sensor error Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: Sample the AD value of temperature sensors through temperature sensors circuit and judge the range of AD value;...
Page 215 GREE GMV5 DC Inverter VRF Units Troubleshooting: 2.3.4.67 “FH” Compressor 1 current sensor error Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: Sample the AD value of current sensor through detecting circuit and judge the range of AD value; if the sampled AD value exceeds upper limit and lower limit in 3 seconds continuously, report the error.
Page 216 GREE GMV5 DC Inverter VRF Units Troubleshooting: 2.3.4.68 “FC” Compressor 2 current sensor error Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: Sample the AD value of current sensor through detecting circuit and judge the range of AD value; if the sampled AD value exceeds upper limit and lower limit in 3 seconds continuously, report the error.
Page 217 GREE GMV5 DC Inverter VRF Units Troubleshooting: 2.3.4.69 “FL” Compressor 3 current sensor error Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: Sample the AD value of current sensor through detecting circuit and judge the range of AD value; if the sampled AD value exceeds upper limit and lower limit in 3 seconds continuously, report the error.
Page 218 GREE GMV5 DC Inverter VRF Units Troubleshooting: 2.3.4.70 “FE” Compressor 4 current sensor error Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: Sample the AD value of current sensor through detecting circuit and judge the range of AD value; if the sampled AD value exceeds upper limit and lower limit in 3 seconds continuously, report the error.
Page 219 GREE GMV5 DC Inverter VRF Units Troubleshooting: 2.3.4.71 “FF” Compressor 5 current sensor error Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: Sample the AD value of current sensor through detecting circuit and judge the range of AD value; if the sampled AD value exceeds upper limit and lower limit in 3 seconds continuously, report the error.
Page 220 GREE GMV5 DC Inverter VRF Units Troubleshooting: 2.3.4.72 “FJ” Compressor 6 current sensor error Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: Sample the AD value of current sensor through detecting circuit and judge the range of AD value; if the sampled AD value exceeds upper limit and lower limit in 3 seconds continuously, report the error.
Page 221 GREE GMV5 DC Inverter VRF Units Troubleshooting: 2.3.4.73 “FU” Compressor 1 shell top temperature sensor error Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: Sample the AD value of temperature sensor through temperature sensor detecting circuit and judge the range of AD value.
Page 222 GREE GMV5 DC Inverter VRF Units Troubleshooting: 2.3.4.74 “Fb” Compressor 2 shell top temperature sensor error Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: Sample the AD value of temperature sensor through temperature sensor detecting circuit and judge the range of AD value.
Page 223 GREE GMV5 DC Inverter VRF Units Troubleshooting: 2.3.4.75 “H0” Fan drive board error Error display: IDU wired controller will display Error judgment condition and method: Check the error code on IDU wired controller. If IDU wired controller displays H0, you should also check the error code on nixie tube of ODU main control board.
Page 224 GREE GMV5 DC Inverter VRF Units 2.3.4.76 “H1” Fan drive board operation error Error display: IDU wired controller will display Error judgment condition and method: Check the error code on IDU wired controller. If IDU wired controller displays H1, you should also check the error code on nixie tube of ODU main control board.
Page 225 GREE GMV5 DC Inverter VRF Units ■Fan drive board is abnormal. Troubleshooting: 2.3.4.79 “H5” Inverter fan overcurrent protection Error display: ODU mainboard will display Error judgment condition and method: Check the error code on nixie tube of ODU main control board. If H5 is displayed, it indicates inverter fan overcurrent protection Possible reason：...
Page 226 GREE GMV5 DC Inverter VRF Units Troubleshooting: 2.3.4.80 “H6” Drive IPM module protection of fan Error display: ODU mainboard will display Error judgment condition and method: Check the error code on nixie tube of ODU main control board. If H6 is displayed, it indicates Drive IPM module protection of fan Possible reason：...
Page 227 GREE GMV5 DC Inverter VRF Units Troubleshooting: 2.3.4.81 “H7” Fan drive temperature sensor error Error display: ODU mainboard will display Error judgment condition and method: Check the error code on nixie tube of ODU main control board. If H7 is displayed, it indicates fan drive temperature sensor error Possible reason：...
Page 228 GREE GMV5 DC Inverter VRF Units Troubleshooting: 2.3.4.82 “H8” Fan drive IPM high temperature protection Error display: ODU mainboard will display Error judgment condition and method: Check the error code on nixie tube of ODU main control board. If H8 is displayed, it indicates fan drive IPM high temperature protection Possible reason：...
Page 229 GREE GMV5 DC Inverter VRF Units 2.3.4.83 “H9” Desynchronizing protection of inverter compressor Error display: ODU mainboard will display Error judgment condition and method: Check the error code on nixie tube of ODU main control board. If H9 is displayed, it indicates Desynchronizing protection of inverter compressor Possible reason：...
Page 230 GREE GMV5 DC Inverter VRF Units 2.3.4.84 “HC” AC input voltage of drive of inverter fan Error display: ODU mainboard will display Error judgment condition and method: Check the error code on nixie tube of ODU main control board. If HC is displayed, it indicates AC input voltage of drive of inverter fan Possible reason：...
Page 231 GREE GMV5 DC Inverter VRF Units 2.3.4.86 “HL” Fan drive DC bus low voltage protection Error display: ODU mainboard will display Error judgment condition and method: Check the error code on nixie tube of ODU main control board. If HL is displayed, it indicates fan drive DC bus low voltage protection Possible reason：...
Page 232 GREE GMV5 DC Inverter VRF Units Troubleshooting: 2.3.4.88 “J0” Other module protection Error display: ODU mainboard will display . IDU and IDU receive light board will not display. Error judgment condition and method: In multiple modules system, if any module causes system stoppage, the modules without errors will display this error to indicate other module has error, which causes unit stoppage.
Page 233 GREE GMV5 DC Inverter VRF Units 2.3.4.89 “J1” Compressor 1 overcurrent protection Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: Check the operation current of compressor through current sensor or circuit. When current exceeds the limit, the unit will stop for protection.
Page 234 GREE GMV5 DC Inverter VRF Units 2.3.4.90 “J2” Compressor 2 overcurrent protection Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: Check the operation current of compressor through current sensor or circuit. When current exceeds the limit, the unit will stop for protection.
Page 235 GREE GMV5 DC Inverter VRF Units 2.3.4.91 “J3” Compressor 3 overcurrent protection Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: Check the operation current of compressor through current sensor or circuit. When current exceeds the limit, the unit will stop for protection.
Page 236 GREE GMV5 DC Inverter VRF Units 2.3.4.92 “J4” Compressor 4 overcurrent protection Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: Check the operation current of compressor through current sensor or circuit. When current exceeds the limit, the unit will stop for protection.
Page 237 GREE GMV5 DC Inverter VRF Units 2.3.4.93 “J5” Compressor 5 overcurrent protection Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: Check the operation current of compressor through current sensor or circuit. When current exceeds the limit, the unit will stop for protection.
Page 238 GREE GMV5 DC Inverter VRF Units 2.3.4.94 “J6” Compressor 6 overcurrent protection Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: Check the operation current of compressor through current sensor or circuit. When current exceeds the limit, the unit will stop for protection.
Page 239 GREE GMV5 DC Inverter VRF Units 2.3.4.95 “J7” Gas-mixing protection of 4-way valve Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: Check the system high pressure and low pressure through pressure sensor.
Page 240 GREE GMV5 DC Inverter VRF Units 2.3.4.96 “J8” System high pressure ratio protection Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: Check the system high pressure and low pressure through pressure sensor. When the ratio between system high pressure and low pressure is bigger than 8 after starting operation, the unit will stop for protection.
Page 241 GREE GMV5 DC Inverter VRF Units Troubleshooting: 2.3.4.98 “L1” Indoor fan protection Error display: IDU wired controller and IDU receive light board will display Error judgment condition and method: Check if the rotation speed of IDU is too slow, or it stops rotation, or protection signal of outdoor fan is transferred.
Page 242 GREE GMV5 DC Inverter VRF Units Troubleshooting: 2.3.4.99 “L3” Water full protection Error display: IDU wired controller and IDU receive light board will display Error judgment condition and method: Check the status of IDU float switch. When water level is too high, float switch is activated, so water...
Page 243 GREE GMV5 DC Inverter VRF Units full protection happens. Possible reason： ■IDU is installed improperly ■Drainage pump is broken ■Float switch operates abnormally ■IDU mainboard is abnormal Troubleshooting:...
Page 244 GREE GMV5 DC Inverter VRF Units 2.3.4.100 “L4” Power supply overcurrent protection Error display: IDU wired controller and IDU receive light board will display Error judgment condition and method: Check if the power supply current from IDU to wired controller is normal. If power supply current is too big, it is judged that the current is abnormal.
Page 245 GREE GMV5 DC Inverter VRF Units Troubleshooting: 2.3.4.102 “L7” No master IDU Error display: IDU wired controller and IDU receive light board will display Error judgment condition and method: No master IDU error will happen when there is no master IDU in the system Possible reason：...
Page 246 GREE GMV5 DC Inverter VRF Units Troubleshooting: 2.3.4.103 “L9” Group-controlled IDU quantity inconsistency Error display: IDU wired controller and IDU receive light board will display Error judgment condition and method: If the IDU quantity connected with wired controller exceeds 16 sets or actually connected IDU quantity is inconsistent with the set group-controlled IDU quantity.
Page 247 GREE GMV5 DC Inverter VRF Units Make sure the IDUs connected with one wired controller belong to the same series. 2.3.4.105 “LC” Mismatch of IDU and ODU models Error display: IDU wired controller and IDU receive light board will display...
Page 248 GREE GMV5 DC Inverter VRF Units Error judgment condition and method: This code is function setting status code, which indicates that the system has entered the limit setting status of max output capacity. “10” means max output capacity is 100%; “09” means max output capacity is 90%;...
Page 249 GREE GMV5 DC Inverter VRF Units 2.3.4.112 “n9” Online IDU quantity inquiry status Error display: ODU mainboard will display Error judgment condition and method: This code is the inquiry status code. In this case, online IDU quantity can be inquired.
Page 250 GREE GMV5 DC Inverter VRF Units Possible reason：—— Troubleshooting: status code, no troubleshooting. 2.3.4.117 “nF” Fan only model status Error display: ODU mainboard will display Error judgment condition and method: This code is the fan only model status code, which indicates that the system has been set to fan only unit status.
Page 251 GREE GMV5 DC Inverter VRF Units Error judgment condition and method: Check error code through IDU wired controller. If IDU wired controller displays P1, please also check the error code displayed on the nixie tube of ODU main control board. Detailed error of compressor drive board can be judged according to the error code on main control board.
Page 252 GREE GMV5 DC Inverter VRF Units Troubleshooting: 2.3.4.122 “P5” Inverter compressor overcurrent protection Error display: ODU mainboard will display Error judgment condition and method: Check the error code on nixie tube of ODU main control board. If P5 is displayed, it indicates inverter compressor overcurrent protection Possible reason：...
Page 253 GREE GMV5 DC Inverter VRF Units Troubleshooting: 2.3.4.123 “P6” Inverter compressor IPM protection Error display: ODU mainboard will display Error judgment condition and method: Check the error code on nixie tube of ODU main control board. If P6 is displayed, it indicates inverter compressor overcurrent protection Possible reason：...
Page 254 GREE GMV5 DC Inverter VRF Units ■Poor contact of compressor UVW wire; ■Connection sequence of compressor UVW wire is wrong; ■Compressor is broken; ■System is blocked; ■Compressor drive board IPM module is broken. Troubleshooting:...
Page 255 GREE GMV5 DC Inverter VRF Units 2.3.4.124 “P7” Compressor drive board temperature sensor error Error display: ODU mainboard will display Error judgment condition and method: Check the error code on nixie tube of ODU main control board. If P7 is displayed, it indicates compressor drive board temperature sensor error Possible reason：...
Page 256 GREE GMV5 DC Inverter VRF Units 2.3.4.126 “P9” Desynchronizing protection of inverter compressor. Error display: ODU mainboard will display Error judgment condition and method: Check the error code on nixie tube of ODU main control board. If P9 is displayed, it indicates Desynchronizing protection of inverter compressor.
Page 257 GREE GMV5 DC Inverter VRF Units Troubleshooting:...
Page 258 GREE GMV5 DC Inverter VRF Units 2.3.4.127 “PC” Compressor drive current detecting circuit error Error display: ODU mainboard will display Error judgment condition and method: Check the error code on nixie tube of ODU main control board. If PC is displayed, it indicates compressor drive current detecting circuit error Possible reason：...
Page 259 GREE GMV5 DC Inverter VRF Units 2.3.4.129 “PL” Compressor drive DC bus low voltage protection Error display: ODU mainboard will display Error judgment condition and method: If the mainboard detects that input power cord voltage is lower than 320V, it will report low voltage protection.
Page 260 GREE GMV5 DC Inverter VRF Units Troubleshooting:...
Page 261 GREE GMV5 DC Inverter VRF Units 2.3.4.131 “U0” Insufficient compressor preheating time Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: If it is detected that the oil temperature preheating time of compressor before startup doesn’t reach 8 hours, it will report this error.
Page 262 GREE GMV5 DC Inverter VRF Units causes phase loss or reverse), it will report this error Possible reason： ■The power supply connected to the unit is incorrect, phase loss or reverse happens ■Detecting circuit is abnormal Troubleshooting: 2.3.4.134 “U4” Lack of refrigerant protection...
Page 263 GREE GMV5 DC Inverter VRF Units Error judgment condition and method: During commissioning, check if ODU cut-off valve is opened through detecting system parameter by pressure sensor. If the parameter is abnormal, it will indicate that confirming the open of cut-off valve and then press SW5 to enter the next step after confirming.
Page 264 GREE GMV5 DC Inverter VRF Units parameter is abnormal, it will indicate this error. Possible reason： ■Electronic expansion valve doesn’t operate normally; ■ODU pipeline is blocked; Troubleshooting: 2.3.4.138 “UC” Setting of master IDU is done Error display: ODU mainboard, IDU wired controller and IDU receive light board will...
Page 265 GREE GMV5 DC Inverter VRF Units 2.3.4.140 “UE” auto charging of refrigerant is invalid Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: When outdoor ambient temperature exceeds the temperature range of auto charging of refrigerant (normal temperature range is 0~40℃), the unit will report this error.
Page 266 GREE GMV5 DC Inverter VRF Units Troubleshooting:...
Page 267: Key Parts Maintenance
GREE GMV5 DC Inverter VRF Units 3 KEY PARTS MAINTENANCE 3.1 CAUTIONS ON CONTROLLER AP1 REPLACEMENT 3.1.1 Cautions on ODU AP1 Replacement 3.1.1.1 Distinguishing Master Module from Slave Module Before replacing ODU AP1, determine the module is a master ODU or a slave ODU. They can be distinguished based on: (1) “Master module DIP state (SA8_MASTER-S)”...
Page 268 GREE GMV5 DC Inverter VRF Units Inter-system IDU and ODU Main Power Running Reserved communication communication system If the LEDs flash, the ODU and IDUs normally communicate; if the LEDs are steadily on, communication is faulty. Check communication lines connecting the ODU and IDUs.
Page 269 GREE GMV5 DC Inverter VRF Units Fan overload detect terminal: CN36 (OVC-FAN) CN36 3.1.2.2. Restoring AP1 Engineering Parameters to Factory Settings (This Step Is Not Required for Original Packaged Parts) After wiring, whatever the AP1 is a master IDU AP1 or a slave IDU AP1, the new AP1 must be restored to factory settings.
Page 270 GREE GMV5 DC Inverter VRF Units (1) Troubleshoot for “no master IDU (L7)” fault Method 1: If the IDU is configured with wired control, stop the IDU (except for lock mode) and press and hold the “MODE” button for 5 seconds to enter setting mode. After setting, the “Master” icon will be highlighted and the wired control buzzer will beep once.
Page 271 GREE GMV5 DC Inverter VRF Units Methods to use the “one-key IDU project number reset” function: Method 1: If the IDU is configured with wired control, set P45 to reset IDU project number through one key function. Method 2: If the IDU is configured with lamp board, use the special control YV1L1 to set P45 and reset IDU project number through one key function.
Page 272: Compressor Replacement And Cautions
GREE GMV5 DC Inverter VRF Units After setting, the LCD displays the icon, as shown in the figure below. NOTE: All wired controls are set to master wired controls by default. (4) If the AP1 of the master IDU is replaced.
Page 273 GREE GMV5 DC Inverter VRF Units The figure below shows current curves that change with evaporating temperature and condensing temperature while the compressors work at 60 Hz. The figure below shows current curves that change with evaporating temperature and condensing temperature while the compressors work at 90 Hz.
Page 274 GREE GMV5 DC Inverter VRF Units The figure below shows current curves that change with evaporating temperature and condensing temperature while the compressor works at 60 Hz. The figure below shows current curves that change with evaporating temperature and condensing temperature while the compressor works at 90 Hz.
Page 275 GREE GMV5 DC Inverter VRF Units tubes to check whether there is oil flowing. Check method for each part: 1) Electric expansion valve: This valve will reset for each power-on or power-off action. Touch the valve and you will feel its vibration during the reset action. A crack sound will be heard as well.
Page 276 GREE GMV5 DC Inverter VRF Units 2) Four-way valve: While this valve is normally running, the four copper pipes connected to it will suffer different temperature. When a unit switches to act the valve, you will feel obvious vibration and hear sound.
Page 277 GREE GMV5 DC Inverter VRF Units 3) Oil balance solenoid valve: This valve can be operated based on its state that is shown through the monitoring software and actual situation. When this valve is opened, the coil will be heated and lubricant at both sides of the valve flows.
Page 278 GREE GMV5 DC Inverter VRF Units (YE) (make sure the moisture proof tape is removed). In normal cases, the multimeter should read 0.39±0.3 V. If it is “0” or infinitely great, the IPM module is faulty. 4) As shown in the figure below, put the black test probe to pad P and the red test probe to pad W (RD) (make sure the moisture proof tape is removed).
Page 279 GREE GMV5 DC Inverter VRF Units 0.39±0.3 V. If it is “0” or infinitely great, the IPM module is faulty. 7) As shown in the figure below, put the black test probe to pad W (RD) and the red test probe to pad NW (make sure the moisture proof tape is removed).
Page 280 GREE GMV5 DC Inverter VRF Units 3.2.1.2 Precondition: Units cannot be normally started Step 1: Disconnect the power supply of the units and open the electric junction box of the compressor to see whether wiring of the compressor is intact.
Page 281 GREE GMV5 DC Inverter VRF Units Step3: Check oil quality. Oil checking valve When system’s internal pressure drops to 0.01Mpa (1.45psi),get some oil through the oil checking valve. Connect a rubber hose to the oil checking valve at one end and a glass container at the other end.
Page 282 GREE GMV5 D.C INVERTER MULTI VRF At the high pressure side, refrigerant is released through the high pressure sensor. Oil checking valve Refrigerant should be released from the high pressure side and low pressure side at the same time. Control the release speed.
Page 283 GREE GMV5 D.C INVERTER MULTI VRF 2. Weld the inlet and outlet pipes of the oil separator 1. Weld the oil return pipe and oil balance oil pipe of the separator 3. Unscrew the oil separator 2) Check oil balancer.
Page 284 GREE GMV5 D.C INVERTER MULTI VRF 3) Check gas/liquid separator. 1. Weld the inlet and outlet pipes of the gas separator 3. Remove the 2. Unscrew the gas/liquid separator gas separator After the gas separator is taken out, check whether it contains impurities. The check procedure is as...
Page 285 GREE GMV5 D.C INVERTER MULTI VRF 4) Check oil return pipes. Remove oil return pipes and balance pipes, and check oil volume and impurity. Remove oil return pipes Remove balance pipes NOTE: Before replacing the faulty parts, make sure to block their openings with tapes. They should be kept intact for further analysis.
Page 286 GREE GMV5 D.C INVERTER MULTI VRF Components of oil balance valve 1: 2. Remove the oil 3. Remove the large balance filter to see filter to see whether whether it is blocked. If it is blocked. If yes, yes, replace the filter replace the filter 4.
Page 287 GREE GMV5 D.C INVERTER MULTI VRF 2) Clear oil return pipes. 2. Blow nitrogen into the oil return pipes and capillary tubes to clean them 1. Remove the oil return filter to see whether it is blocked. If yes, replace the filter 3) Clear liquid pipe filters.
Page 288 GREE GMV5 D.C INVERTER MULTI VRF Step 7: Preparations. 1) Prepare new parts. In the course of moving compressors, do not lay them down or put them upside down. The tilt angle should be less than 30° . Make sure oil will not overflow from the oil balance opening. The inlet and outlet should be blocked.
Page 289 GREE GMV5 D.C INVERTER MULTI VRF lubricant FVC68D or FV-68H whose moisture absorption capability is high. Requirements on air-tightness of these compressors are higher. 2) Prepare other materials. a. Prepare nitrogen. Prepare enough nitrogen. They will be used during welding. Nitrogen pressure should be 2.0 MPa (290psi) at least.
Page 290 GREE GMV5 D.C INVERTER MULTI VRF Step 9: Install a new oil balancer. The original oil balancer, if is found to have no impurities or other objects, can be used further more. This part serves as a container and it does not have complex structure. However, if it contains impurities or other objects, replace it.
Page 291 GREE GMV5 D.C INVERTER MULTI VRF Step 11: Install a new compressor. If it is a inverter compressor that needs replacement 1. Weld the inlet of the inverter compressor 2. Weld the outlet of the inverter compressor 3. Screw the...
Page 292 Specific procedure is as follows: 1) GMV5 series units use FVC68D or FV-68H lubricant. Make sure to confirm the trademark of the lubricant first. Lubricant of other trademarks is not allowed.
Page 293 NOTE: Lubricant is of great importance to the normal running of compressors. You should follow Gree’s requirement to add qualified lubricant of the specified trademark and ensure properness of fill amount. Step 14: Vacuum-pump. After lubricant is added, keep on extracting air through a vacuum pump till the internal pressure reaches the absolute pressure 0 kgf/cm2 (0psi)and the pressure gauge reads -1 kgf/cm2 (-145psi).
Page 294 GREE GMV5 D.C INVERTER MULTI VRF pressure gauge reads -1 kgf/cm2 (-145psi), keep on the extraction action for 0.5~1.0 hour more. Finally, turn off the rotary switch of the gauge and close the pump. One hour later, if the pressure remains the same, fill refrigerant.
Page 295: Cautions On Compressor Drive Replacement
GREE GMV5 D.C INVERTER MULTI VRF Start the units and set them to run in refrigerating full-start, refrigerating single-start, heating full-start, and heating single-start modes respectively. Duration for each running mode should be 30 minutes at least. After the debug, analyze data and adjust the unit system, to ensure indexes of the entire system.
Page 296 GREE GMV5 D.C INVERTER MULTI VRF fan drive; compressor drive output 18 VDC; bridge rectifier output P; bridge rectifier output N; compressor drive output 540 VDC; reactor’s wiring terminal; bridge rectifier input AC inlead; compressor drive’s mains terminal. See the figure below:...
Page 297 GREE GMV5 D.C INVERTER MULTI VRF (4) Loosen the screws on the compressor drive, as shown in the figure below:...
Page 298 GREE GMV5 D.C INVERTER MULTI VRF (5) Replace the compressor drive. Before the replacement, apply some silicone tape onto the IPM module. (6) Install a new compressor drive, screw and wire it.
Page 299: Assembling And Disassembling Key Parts Of Odus
GREE GMV5 D.C INVERTER MULTI VRF 3.4 ASSEMBLING AND DISASSEMBLING KEY PARTS OF ODUS Compressor Precondition: No refrigerant exists in the pipeline system and the power supply has been disconnected. Step Diagram Operation Procedure ●Use a screwdriver to unscrew the upper and lower front panels.
Page 300 GREE GMV5 D.C INVERTER MULTI VRF Compressor Precondition: No refrigerant exists in the pipeline system and the power supply has been disconnected. Step Diagram Operation Procedure ●Remove the compressor from the 5. Remove the compressor. chassis. ●Put the compressor in a proper position.
Page 301 GREE GMV5 D.C INVERTER MULTI VRF Four-way valve Precondition: No refrigerant exists in the pipeline system and the power supply has been disconnected. Step Diagram Operation Procedure ● Remove the upper and lower front 1. Loosen the hooks at panels.
Page 302 GREE GMV5 D.C INVERTER MULTI VRF Four-way valve Precondition: No refrigerant exists in the pipeline system and the power supply has been disconnected. Step Diagram Operation Procedure ●Put the valve in a proper position. ● Weld the valve with the pipeline.
Page 303 GREE GMV5 D.C INVERTER MULTI VRF Electric expansion valve Precondition: No refrigerant exists in the pipeline system and the power supply has been disconnected. Step Diagram Operation Procedure ● Remove the upper and lower front 1. Loosen the hooks at panels.
Page 304 GREE GMV5 D.C INVERTER MULTI VRF Electric expansion valve Precondition: No refrigerant exists in the pipeline system and the power supply has been disconnected. Step Diagram Operation Procedure ● Weld the connecting pipes with the electric expansion valve. ● Before welding, cover the valve with wet cloth.
Page 305 GREE GMV5 D.C INVERTER MULTI VRF Oil separator Precondition: No refrigerant exists in the pipeline system and the power supply has been disconnected. Step Diagram Operation Procedure ● Remove the upper and lower front 1. Loosen the hooks at panels.
Page 306 GREE GMV5 D.C INVERTER MULTI VRF Oil separator Precondition: No refrigerant exists in the pipeline system and the power supply has been disconnected. Step Diagram Operation Procedure ●Weld the four pipe joints with the oil separator. During welding, charge nitrogen into the pipes.
Page 307 GREE GMV5 D.C INVERTER MULTI VRF Gas/liquid separator Precondition: No refrigerant exists in the pipeline system and the power supply has been disconnected. Step Diagram Operation Procedure ● Remove the upper and lower front 1. Loosen the hooks at panels.
Page 308 GREE GMV5 D.C INVERTER MULTI VRF Gas/liquid separator Precondition: No refrigerant exists in the pipeline system and the power supply has been disconnected. Step Diagram Operation Procedure ●Put the gas/liquid separator based on the position of the suction and discharge pipes and weld the pipes with the gas/liquid separator.
Page 309 GREE GMV5 D.C INVERTER MULTI VRF Heat exchanging board Precondition: No refrigerant exists in the pipeline system and the power supply has been disconnected. Step Diagram Operation Procedure ● Remove the upper and lower front 1. Loosen the hooks at panels.
Page 310: Unit Maintenance
GREE GMV5 D.C INVERTER MULTI VRF Heat exchanging board Precondition: No refrigerant exists in the pipeline system and the power supply has been disconnected. Step Diagram Operation Procedure ●Screw the support of the heat exchanging board and fix the board onto the chassis.
Page 311: Appendixes
(5) Turn the power switch on 8 hours beforehand to pre-heat the outdoor compressor crankcase before the unit is restarted after being in idle status for a long time. (6) Check ODU installation. If an abnormality is found, contact GREE’s special maintenance center. 3.5.4 Post-Season Maintenance (1) Disconnect the general power supply.
Page 312: Debug Parameter Record List
GREE GMV5 D.C INVERTER MULTI VRF Visual inspection checklist of *** air conditioning equipment Item Problem Checked by Check time Air circuit breaker Materials of communication lines Communication system Connection of communication lines 4.3 DEBUG PARAMETER RECORD LIST Project name...
Page 313: Common Parameter Lists
GREE GMV5 D.C INVERTER MULTI VRF 4.4 COMMON PARAMETER LISTS 4.4.1 R410A refrigerant pressure / saturation temperature list Corresponding Corresponding Corresponding Temperature Temperature Temperature saturation pressure saturation pressure saturation pressure ℉ ℉ ℉ ° C ° C ° C -45.4 1.54...
Page 314 GREE GMV5 D.C INVERTER MULTI VRF Temperature Resistance Voltage Temperature Resistance Voltage 0.381 2.205 2.877 108.7 168.8 2.133 2.889 102.9 0.42 170.6 2.064 2.901 97.4 0.44 172.4 1.997 2.912 10.4 92.22 0.462 174.2 1.933 2.923 12.2 87.35 0.484 1.871 2.934 82.75...
Page 315 GREE GMV5 D.C INVERTER MULTI VRF Temperature Resistance Voltage Temperature Resistance Voltage 91.4 10.63 1.931 255.2 0.519 3.19 93.2 10.2 1.964 0.505 3.192 9.779 1.998 258.8 0.492 3.195 96.8 9.382 2.03 260.6 0.48 3.198 98.6 9.003 2.062 262.4 0.467 100.4 8.642...
Page 316 GREE GMV5 D.C INVERTER MULTI VRF Temperature Resistance Voltage Temperature Resistance Voltage -9.4 235.3 0.259 163.4 3.144 2.852 -7.6 221.6 0.273 165.2 3.04 2.865 -5.8 208.9 0.288 2.94 2.877 196.9 0.304 168.8 2.844 2.889 -2.2 181.4 0.328 170.6 2.752 2.901 -0.4...
Page 317 GREE GMV5 D.C INVERTER MULTI VRF Temperature Resistance Voltage Temperature Resistance Voltage 78.8 19.14 1.686 251.6 0.7289 3.184 80.6 18.32 1.722 253.4 0.7099 3.187 82.4 17.55 1.758 255.2 0.6915 3.19 84.2 16.8 1.793 0.6736 3.192 16.1 1.828 258.8 0.6563 3.195 87.8...
Page 318 GREE GMV5 D.C INVERTER MULTI VRF 4.2.2.3 Voltage list of 50 kΩ discharge temperature sensors (including top temperature sensor, and discharge air temperature sensor) Temperature Resistance Voltage Temperature Resistance Voltage ℉ ℉ kΩ kΩ ° C ° C 911.56 0.036 141.8...
Page 319 GREE GMV5 D.C INVERTER MULTI VRF Temperature Resistance Voltage Temperature Resistance Voltage 77.349 0.378 222.8 2.7922 2.58 60.8 73.896 0.393 224.6 2.715 2.595 62.6 70.503 0.41 226.4 2.6404 2.611 64.4 67.338 0.427 228.2 2.5682 2.626 66.2 64.333 0.444 2.4983 2.64 61.478...
Page 320 GREE GMV5 D.C INVERTER MULTI VRF 4.4.3 Voltage / pressure lists of pressure sensors 4.4.3.1 High-pressure sensor (R410A) Temperature Absolute pressure Voltage Temperature Absolute pressure Voltage ℉ ℉ ° C ° C 25.5 0.102 60.8 1300 188.5 -38.2 26.7 0.111 62.6...
Page 321 GREE GMV5 D.C INVERTER MULTI VRF Temperature Absolute pressure Voltage Temperature Absolute pressure Voltage 136.3 0.917 141.8 3932 570.1 4.106 42.8 140.5 0.947 143.6 4017 582.5 4.197 44.6 144.9 0.979 145.4 4103 594.9 4.288 46.4 1030 149.4 1.012 147.2 4190 607.6...
Page 322 GREE GMV5 D.C INVERTER MULTI VRF Temperature Absolute pressure Voltage Temperature Absolute pressure Voltage -32.8 30.6 0.719 1453 210.7 3.203 31.9 0.737 69.8 1493 216.5 3.283 -29.2 33.4 0.757 71.6 1535 222.6 3.367 -27.4 34.8 0.777 73.4 1577 228.7 3.451 -25.6...
Page 323: Exploded Views And Spare Part List
GREE GMV5 D.C INVERTER MULTI VRF 4.5 EXPLODED VIEWS AND SPARE PART LIST Modle GMV-72WM/B-F (U) Product Code CN851W1380, CN851W1381 Name of part Part code Quantity Rear Grill 01574105 Top Cover 01264100030P Diversion Circle 10474100 Fan motor Sub-Assy 15404100057 Axial Flow Fan Sub-Assy...
Page 324 GREE GMV5 D.C INVERTER MULTI VRF Name of part Part code Quantity Dry Filter Sub-Assy 07314100001 Gas Tube Filter 072190511 Dry Filter 07218769 Cut-off Valve 3/8 07334100011 Electronic Expansion Valve Coil 4304413206 Electronic Expansion Valve 07334390 Discharge Valve 07334100002 Electronic Expansion Valve Coil...
Page 325 GREE GMV5 D.C INVERTER MULTI VRF Modle GMV-72WM/B-U (U) Name of part Part code Quantity Rear Grill '01574105 Top Cover '01264100030P Diversion Circle '10474100 Fan motor Sub-Assy '15404605 Axial Flow Fan Sub-Assy '10338702 Fan Motor '15704124 Motor Support Sub-Assy '01804771P...
Page 326 GREE GMV5 D.C INVERTER MULTI VRF Name of part Part code Quantity 4-Way Valve Sub-Assy '04044100063 8Cut-off Valve 7/8 '07334100012 Filter '07218603 Magnet Coil '4300040095 4-way Valve '43000339 One way Valve '07335210 Nozzle for Adding Freon '06120012 Filter Board 30228000015...
Page 327 GREE GMV5 D.C INVERTER MULTI VRF Name of part Part code Quantity Rear Grill 01574100002 Top Cover 01264100006P Diversion Circle 10474100002 Motor for Axial Fan Assy 15404100056 Axial Flow Fan 10434100002 Fan Motor 15704119 Gas By-pass sub- assy 04634100012 Magnet Coil...
Page 328 GREE GMV5 D.C INVERTER MULTI VRF Name of part Part code Quantity 4-Way Valve Sub-Assy 04044100055 Filter 07218603 Magnet Coil 4304410018903 4-way Valve 43000339 One way Valve 07335210 Nozzle for Adding Freon 06120012 Electric Box Assy 01394100447 Filter Board 30228000032...
Page 329 GREE GMV5 D.C INVERTER MULTI VRF Name of part Part code Quantity Base Frame Assy '01284100122 Cut off Valve '07334100011 Liquid Valve Sub-Assy '07304100002 Valve '07304100007 Cut off Valve '07334100014 Gas Hose Sub-Assy '04574100027 Compressor '00204100016 Electric Heater(Compressor) '7651540713 Oil Equalizing Pipe Sub-Assy...
Page 330 GREE GMV5 D.C INVERTER MULTI VRF Modle GMV-120WM/B-F (U) Product Code CN851W1420, CN851W1421 Name of part Part code Quantity Rear Grill 01574100002 Top Cover 01264100006P Diversion Circle 10474100002 Motor for Axial Fan Assy 15404100056 Axial Flow Fan Blade 10434100002 Fan Motor...
Page 331 GREE GMV5 D.C INVERTER MULTI VRF Name of part Part code Quantity Check Valve 04324001 Electronic Expansion Valve 07334412 Bidirectional Filter 07210044 Plate-type Heat Exchanger Sub-Assy 00904100007 Dry Filter Sub-Assy 07314100002 Gas Tube Filter 072190511 Dry Filter 07218769 Left Side Plate...
Page 332 GREE GMV5 D.C INVERTER MULTI VRF Name of part Part code Quantity Electric Box Assy 01394100432 Filter Board 30228000032 Rectifier 46018000014 Main Board 30228000031 Radiator 4901800000201 Reactor 43138000049 Main Board 30223000047 Radiator 49018000001 Terminal Board 42018000558 Main Board 30223000005 AC Contactor...
Page 333 GREE GMV5 D.C INVERTER MULTI VRF Name of part Part code Quantity Electromagnetic Valve 43044100144 Inhalation Tube Sub-assy '04574100114 Cut off Valve '07130239 Low Pressure Survey Valve Sub-assy '07334100010 Chassis Sub-assy '01194100106P Base Frame Sub-Assy '01284100122 Oil Separator 0742418601 Electrical Heater(Compressor)
Page 334 GREE GMV5 D.C INVERTER MULTI VRF Modle GMV-144WM/B1-F (U) Product Code CN851W2000 Name of part Part code Quantity Rear Grill 01574100002 Top Cover 01264100006P Diversion Circle 10474100002 Motor for Axial Fan Assy 15404100056 Axial Flow Fan Blade 10434100002 Fan Motor...
Page 335 GREE GMV5 D.C INVERTER MULTI VRF Name of part Part code Quantity Check Valve 04324001 Electronic Expansion Valve 43044100172 Bidirectional Filter 07210044 Plate-type Heat Exchanger Sub-Assy 00904100007 Dry Filter Sub-Assy 07314100002 Gas Tube Filter 072190511 Dry Filter 07218769 Left Side Plate...
Page 336 GREE GMV5 D.C INVERTER MULTI VRF Name of part Part code Quantity Electric Box Assy 01394100432 Filter Board 30228000032 Rectifier 46018000014 Main Board 30228000031 Radiator 4901800000201 Reactor 43138000049 Main Board 30223000047 Radiator 49018000001 Terminal Board 42018000558 Main Board 30223000005 AC Contactor...
Page 337 GREE GMV5 D.C INVERTER MULTI VRF Name of part Part code Quantity One way Valve 07335210 4-way Valve 43000412 Filter 07218603 Electromagnetic Valve 43000054 Electromagnetic Valve 43000072 Strainer 07415200002 Upper Cover Plate (back) 01264100005P Rear Grill 016001500381 Condenser Assy 01100250016201...
Page 338 GREE GMV5 D.C INVERTER MULTI VRF Name of part Part code Quantity Main Board 30223000041 Terminal Board 42018000026 Terminal Board 42018000577 AC Contactor 44010265 Main Board 300027000130 Radiator 49018000088 Radiator 4901800008001 Electric Box Assy 100002002650...
Page 339 JF00302443...

This manual is also suitable for:

Gmv-72wm/b-f(u)Gmv-96wm/b-f(u)Gmv-120wm/b-f(u)Gmv-144wm/b1-f(u)Gmv-168wm/b1-f(u)Gmv-72wm/b-u(u) ... Show all

Gree GMV5 Service Manual

Quick Links

Need help?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for Gree GMV5

Summary of Contents for Gree GMV5

This manual is also suitable for:

Table of Contents