Gree GMV5 Series Service Manual
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Gree GMV5 Series Service Manual

Dc inverter vrf units for north america t1/r410a/60hz
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See also: Owner's Manual
GMV5 DC Inverter VRF Units SERVICE
MANUAL (For North America)
T1/R410A/60Hz
(GC201601-Π)

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Summary of Contents for Gree GMV5 Series

  • Page 1 GMV5 DC Inverter VRF Units SERVICE MANUAL (For North America) T1/R410A/60Hz (GC201601-Π)

  • Page 2: Table Of Contents

    Contents PREFACE ..........................1 SAFTY PRECAUTIONS ...................... 2 CHAPTER 1 INTRODUCTION TO BASIC FEATURES OF UNITS ........7 1 MODELS LIST ................................7 2 BASIC OPERATING PRINCIPLE .......................... 7 3 INTERNAL PIPING DESIGN OF THE UNITS ...................... 8 3.1 Piping Diagram of GMV-72WM/B-F(U) and GMV-96WM/B-F(U) ............8 3.2 Piping Diagram of GMV-120WM/B-F(U) .....................
  • Page 3 9.1 CALCULATION METHOD FOR PERFUSING REFRIGERANT ............89 9.2 METHOD FOR PERFUSING REFRIGERANT ..................91 CHAPTER 3 COMMISSIONING OPERATION ..............95 1 SECURITY REQUIREMENTS ..........................95 1.1PRECAUTIONS FOR CONSTRUCTION ..................... 95 1.2 PRECAUTIONS FOR THE USE OF REFRIGERANTS ................95 1.3 FUNCTION SETTINGS OF ODUS ......................

  • Page 4: Preface

    SERVICE MANUAL 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

    GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 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 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL • This could result in personal injury and product damage. Do not open the inlet grille of the product uring operation. (Do not touch the electrostatic filter, if the unit is so equipped.) •...
  • Page 8 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL ■Operation Do not use the air conditioner in specialenvironments. • Oil, steam, sulfuric smoke, etc. can significantly reduce the performance of the air conditioner or damage its parts. Do not block the inlet or outlet. •...
  • Page 9 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL outdoor units. Auto-addressing should also be done in case of changing the indoor unit PCB. Use a firm stool or ladder when cleaning or maintaining the air conditioner. • Be careful and avoid personal injury. Do not insert hands or other objects through the air inlet or outlet while the air conditioner is plugged in.

  • Page 10: Chapter 1 Introduction To Basic Features Of Units

    GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL CHAPTER 1 INTRODUCTION TO BASIC FEATURES OF UNITS 1 MODELS LIST Capacity Power Model Product Code Ref. Appearance Supply Cooling Heating (Btu/h) (Btu/h) CN851W1380 208/230V GMV-72WM/B-F(U) 72000 81000 R410a CN851W1381 3~60Hz CN851W1390 208/230V GMV-96WM/B-F(U) 96000 108000...

  • Page 11: Internal Piping Design Of The Units

    GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 3 INTERNAL PIPING DESIGN OF THE UNITS 3.1 Piping Diagram of GMV-72WM/B-F(U) and GMV-96WM/B-F(U)

  • Page 12: Piping Diagram Of Gmv-120Wm/B-F(U)

    GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 3.2 Piping Diagram of GMV-120WM/B-F(U)

  • Page 13: Names And Main Functions Of Components

    GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 3.3 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 Compressor heat tape compressor is in standby status, ensuring the reliability during compressor startup.
  • Page 14 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL Filter Prevents impurities from entering components and parts. Capillary tube Supports flow regulating and pressure reduction. Stop valve, closed when the unit is delivered from the factory and will Liquid valve be opened after installation. Stop valve, closed when the unit is delivered from the factory and will Gas valve be opened after installation.

  • Page 15: Basic Parameters Of Unit

    GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 4 BASIC PARAMETERS OF UNIT Outdoor Units_Heat Pump 6Ton 8Ton 10Ton Horse Power Model GMV-72WM/B-F(U) GMV-96WM/B-F(U) GMV-120WM/B-F(U) Module combination GMV-72WM/B-F(U) GMV-96WM/B-F(U) GMV-120WM/B-F(U) Power Supply 208/230V 3~60Hz 208/230V 3~60Hz 208/230V 3~60Hz Code CN851W1380 CN851W1390 CN851W1420 Type Inverter scroll type...
  • Page 16 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL Outdoor Units_Heat Pump 12Ton 14Ton 16Ton Horse Power Model GMV-144WM/B-F(U) GMV-168WM/B-F(U) GMV-192WM/B-F(U) GMV-72WM/B-F(U)+ GMV-72WM/B-F(U)+ GMV-96WM/B-F(U)+ Module combination GMV-72WM/B-F(U) GMV-96WM/B-F(U) GMV-96WM/B-F(U) Code Power Supply 208/230V 3~60Hz 208/230V 3~60Hz 208/230V 3~60Hz Type Inverter scroll type Inverter scroll type Inverter scroll type Number...
  • Page 17 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL Outdoor Units_Heat Pump 24Ton 26Ton 28Ton 30Ton Horse Power GMV-288WM/B-F GMV-312WM/B-F GMV-336WM/B-F GMV-360WM/B-F Model GMV-96WM/B-F( GMV-96WM/B-F( GMV-96WM/B-F( GMV-120WM/B-F (U)+ GMV-96WM/B-F( GMV-96WM/B-F( GMV-120WM/B-F GMV-120WM/B-F Module combination (U)+ (U)+ GMV-90WM/B-F( GMV-120WM/B-F GMV-120WM/B-F GMV-120WM/B-F Code Code Power Supply 208/230V 3~60Hz 208/230V 3~60Hz...

  • Page 18: Electrical Parameters

    GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 5 ELECTRICAL PARAMETERS Minimum Circuit Maximum Overcurrent Power Supply Fuse Capacity Ampacity 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/B-F(U) 208V/230V 3~ 60Hz GMV-168WM/B-F(U) 208V/230V 3~ 60Hz GMV-192WM/B-F(U) 208V/230V 3~ 60Hz GMV-216WM/B-F(U)

  • Page 19: Circuit Diagram

    GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 2. Circuit Diagram 2.1 Circuit Diagram of ODU 2.1.1 Circuit diagram of GMV-72WM/B-F(U) 2.1.2 Circuit diagram of GMV-96WM/B-F(U)
  • Page 20 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 2.1.3Circuit diagram of GMV-120WM/B-F(U) When conducting maintenance based on above circuit diagrams, units must be power-off. Please strictly following the circuit diagrams when reconnecting the wires, otherwise, electric shock may occur.

  • Page 21: Optional Accessories

    GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 6 OPTIONAL ACCESSORIES GMV5 series VRF units support the following optional accessories: Export Model Remark ML01/A Manifold For model selection, refer to Pipe Selection. FQ01A/A, FQ01B/A, FQ02/A, FQ03/A Remote-control Receiver Board JS03 Applicable for air-duct-type IDUs.
  • Page 22 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL  Functions of oil check valve: During after-sale maintenance, the oil check valve can be used to extract lubricating oil samples, which are further detected to analyze the oil quality in the system. The oil check valve can also serve as the inlet for lubricating oil charging.
  • Page 23 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 7.2 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: Capacity Range of Connected IDU Maximum Number of (kBtu/h) Model...

  • Page 24: Precautions On Refrigerant Leakage

    GMV5 series VRF units adopt the R410A refrigerant, which is nonflammable and nontoxic. However, the space for refrigerant leakage must be sufficient to ensure that the refrigerant concentration does not exceed that specified in the safety requirement;...
  • Page 25 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL refrigeration systems, or contact local Gree sales company. If the above equation can not be satisfied, then follow the following steps.  Selection of air conditioning system: select one of the next 1). Installation of effective opening part 2).

  • Page 26: Unit Operating Temperature

    GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 9 UNIT OPERATING TEMPERATURE Ambient temperature: -5ºC(23ºF)~52ºC(125.6ºF) Cooling Ambient temperature: -20ºC (-4ºF)~24ºC (75.2ºF) Heating In the case of a full fresh air conditioning IDU, the unit operating temperature is as follows: Ambient temperature: 16ºC(60.8ºF)~45ºC(113ºF) Cooling Ambient temperature: -7ºC (19.4ºF)~16ºC (60.8ºF) Heating...

  • Page 27: Chapter 2 Installation

    GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL CHAPTER 2 INSTALLATION...

  • Page 28: Chapter 2 Installation

    GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 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 29: Cooperation Between Different Professions

    GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL The ratio of slop for condensate water pipe is insufficient or the Reverse slop or inconsistent connection of condensate water pipe can condensate water pipe is hinder the smooth drainage and cause leakage of the IDU. incorrectly connected.
  • Page 30 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL (1) Drain pipes enjoy the highest priority. Air ducts and pressure pipes should leave places for gravity pipes. (2) Air ducts and small pipes should leave places for major pipes. 1.3.3 Requirements for cooperation with electric After the capacity of air conditioning unit is determined, check the following aspects with relevant electric design personnel: (1) Whether the electrical load is designed based on the requirement of the air conditioning unit;...
  • Page 31 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 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 Insulation Electric...

  • Page 32: Onsite Review Of Design Drawing

    GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 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. The following aspects of working drawing must be reviewed: （1）The loads of indoor and ODUs must match.

  • Page 33: Construction Organization Process

    GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 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 Drain pipe Power cable Power cable control cables Purging, pressure maintaining connection installation...

  • Page 34: Material Selection

    GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 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 35: Installation Space Requirement

    GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL Total Length L(m) of Communication Cable Material Type Wire size Remarks between IDU Unit and IDU (ODU ) Unit m(feet) 1. If the wire diameter is enlarged to 2 ×AWG16, the total communication length can reach 1500m(4921-1/4feet).

  • Page 36: Place Selection For Installing Odu

    GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 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. Therefore, the ODU with excellent capacity and low noise is preferred;...
  • Page 37 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL External and installation dimensions of GMV-96WM/B-F(U), and GMV-120WM/B-F(U):...

  • Page 38: Installation Space Requirement For Odu

    GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 3.3 INSTALLATION SPACE REQUIREMENT FOR ODU 3.3.1 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 (2) Installation space requirements for the dual-module unit...
  • Page 39 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL (3) Installation space requirements for triple-module unit 3.3.2 When there is wall (or similar obstruction) above the unit, keep the distance between the unit top and the wall at least 3000mm(118-1/8inch) 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 (59inch) or above (See Fig.1).
  • Page 40 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL Installation space requirements of multiple outdoor units To ensure smooth ventilation, an open space must be ensured above the unit top, and there is no barrier against wind. If there is an open space at the front side and left side (or right side) of the outdoor unit, the units should be installed towards the same direction or reverse direction.
  • Page 41 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 3.3.4 Considering snow in outdoor unit installation 3.3.5 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 42 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 3) Based on the unit dimensions and the size of steel-plate ventilating duct, prepare materials such as canvas casing, tin foil, steel bar and tapping screw, as well as tools such as hand -operated electric drill, air screw driver and screwdriver.
  • Page 43 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL Step 3 Step 4 Step 5 Step 6 Method 2: Remove the unit top case. Detailed operations are as follows: 1) Install the ODU (2) and steel-plate ventilating duct (1). Take out the grille from the top of the top case component.
  • Page 44 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL NOTE: Remove the grille on the top case when connecting an ODU to static pressure ventilating duct; otherwise, the air volume, especially the unit operating performance will be affected. For method 2, since drills are required on the top case, the powder coated protective layer on the top case will be damaged.
  • Page 45 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 3.3.7 Lifting method When carrying the suspended, unit pass the ropes under the unit and use the two suspension points each at the front and rear. Always lift the unit with ropes attached at four points so that impact is not applied to the unit. Be very careful while carrying the product.

  • Page 46: Requirements On Foundation Installation

    GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 4 REQUIREMENTS ON FOUNDATION INSTALLATION 4.1 ODU FOUNDATION The concrete foundation of the ODU must be strong enough. Ensure that the drainage is smooth and that the ground drainage or floor drainage is not affected. Requirements on the concrete foundation are as follows: （1）The concrete foundation must be flat and have enough rigidity and strength to undertake the unit‘s weight during running.

  • Page 47: Odu Fixing

    GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL passages of the pipe and wiring, when making the ground support.  Do not use tube or pipe for liquid outlet in the Base pan. Use drainage instead for liquid outlet.The tube or pipe may freeze and the liquid may not be drained. ...

  • Page 48: Piping Connection

    GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 5 PIPING CONNECTION 5.1 Schematic Diagram of Piping Connection...

  • Page 49: Schematic Diagram Of Piping Sequence

    GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 5.2 Schematic Diagram of Piping Sequence GMV-72WM/B-F(U) GMV-96WM/B-F(U) and GMV-120WM/B-F(U)

  • Page 50: Allowable Pipe Length And Drop Height Among Indoor And Outdoor Units

    GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 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). L10: Length from the first branch to the farthest IDU;...
  • Page 51 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL Equivalent length from the first branch to the ≤40(131-1/4) L6+L7+L8+L9+j furthest piping (1) Height difference ≤90(295-1/4) —— Outdoor unit at upper(2) between outdoor unit ≤90(295-1/4) —— Outdoor unit at lower(2) and indoor unit ≤30(98-2/4) ——...

  • Page 52: Connection Pipe Among Outdoor Modules

    GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 4 Connection Pipe among Outdoor Modules NOTE: When the distance between outdoor units exceeds 2m(6-5/9feet), U-type oil trap should be added at low-pressure gas pipe. A+B≤10m (32-3/4feet).
  • Page 53 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL The pipeline between outdoor units should be installed as follows:...

  • Page 54: Fitting Pipe Between Outdoor Unit And The First Manifold

    GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 5.5 Fitting pipe between Outdoor Unit and the First Manifold 5.5.1For single module system, pipe size (between outdoor unit and the first manifold) is determined by that of outdoor unit. 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)
  • Page 55 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL Φ22.2(7/8) Φ9.52(3/8) GMV-96WM/B-F(U) Φ28.6(1-1/8) Φ12.7(1/2) GMV-120WM/B-F(U) Select the branch of outdoor module: Module‘s capacity (C) Model Select the branch of outdoor 144≤C ML01/A module  Branch of outdoor module must be a Y-type manifold. Never use tee T-type 3-way connector, otherwise, compressor may be damaged.
  • Page 56 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL Single module unit 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) Φ22.2(7/8) Φ9.52(3/8) GMV-96WM/B-F(U) Φ28.6(1-1/8) Φ12.7(1/2) GMV-120WM/B-F(U) For multiple modules, the piping from ODU to the first branch of IDU is based on the total rated capacity of outdoor modules.
  • Page 57 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL Ф41.3(1-5/8) Ф19.05(3/4) GMV-336WM/B-F(U) Ф41.3(1-5/8) Ф19.05(3/4) GMV-360WM/B-F(U) 5.5.5 Manifold at indoor unit side Manifold at indoor unit side can be selected as per total capacity of downstream indoor unit(s). Refer to the following table. Total capacity of downstream R410A Refrigerant System Model...
  • Page 58 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 5.5.6 Fitting pipe between manifolds Pipe size (between two manifolds at indoor unit side) is based on the total capacity of upstream indoor unit(s). Dimension of the pipe of indoor branch Total capacity of downstream indoor unit(s) C(Btu/h) Gas Pipe mm(inch) Liquid Pipe mm(inch)
  • Page 59 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 5.5.7 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(inch) Liquid Pipe mm(inch) Φ9.52(3/8) Φ6.35(1/4)

  • Page 60: Pipe Installation And Insulation

    GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 6 PIPE INSTALLATION AND INSULATION 6.1 PIPE INSTALLATION FOR THE COOLING SYSTEM 6.1.1 Precautions on Pipe Direction Design Refrigerant pipe layout must be designed in accordance with the following principles: （1） 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 beam as possible.
  • Page 61 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL  Always careful not to leak the refrigerant during welding.  The refrigerant generates poisonous gas harmful to human body if combusted.  Do not perform welding in a closed space.  Be sure to close the cap of the service port to prevent gas leakage after the work. ...
  • Page 62 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL During bending, there must be no corrugation or deformation inside the pipe. The welding point of the pipe should not be at the bending part. The distance between the nozzle welding joint and the bending part should be less than 100 mm(3.94inch). 6.1.2.4 Pipe Expanding Pipe expanding is used to provide a welding point for pipe connection.
  • Page 63 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL Ensure sufficient rigidity for the devices. Take anticorrosive measures for exposed part of built-in fittings. If the foundation must be waterproof, takes waterproof measures. (3) Construction of steel casings Equip a steel casing for all pipes which are led through the wall or floor. Pipe welding joints cannot be placed inside the sleeve.
  • Page 64 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL Distance between Horizontal 1000(39-3/8) 1500(59) 2000(78-3/4) Pipes mm(inch) Distance between Vertical 1500(59) 2000(78-3/4) 2500(98-1/2) Pipes mm(inch) The pipe led through a wall or beam must be fixed by a support, hanger, or bracket on both ends at the position 300 mm (11-7/8inch) away from the hole.
  • Page 65 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL finished. Equip a pressure regulator valve to the nitrogen cylinder. The nitrogen flow is above 4-6 L/min (pressure of 0.02 to 0.05 Mpa) and must be regulated based on the pipe caliber.  During welding, nitrogen-filling protection must be conducted;...
  • Page 66 Then insert the copper pipe to proper depth. A concave bag for positioning is available to the manifold purchased from Gree.
  • Page 67 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL (8) Because the manifold structure is complex, perform with care to ensure tight insulation. 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.

  • Page 68: Pipe Installation For The Condensate Water System

    GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL • When installing and moving the air conditioner to another site, be sure to make recharge refrigerant after perfect evacuation. If a different refrigerant or air is mixed with the original refrigerant, the refrigerant cycle may malfunction and the unit may be damaged.
  • Page 69 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL as shown in the following figures. (5) The condensate water pipe cannot be tied with the refrigerant pipe. (6) A ventilation hole must be provided on the top of the drain pipe to ensure smoother discharge of condensate water.
  • Page 70 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL Install drain trap connectors as shown in the following figure. Install a drain trap connector for each unit. The drain trap connector shall be installed in a way that facilitates trap cleaning. (5) During condensate water pipe installation, ensure a distance above 500mm (19.7inch ) between the pipe and the electric box of the unit for maintenance.
  • Page 71 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 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 72 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL c. The drain pump shall be fixed securely. Otherwise, abnormal noises will be generated. 5. Requirements on Independent Drainage for Each IDU Requirements on independent drainage design for each IDU are as follows: (1) There must be a proper inclination for the drain pipe.

  • Page 73: Insulation System

    GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 6.3 INSULATION SYSTEM 6.3.1 Insulation for the Refrigerant Pipe System 6.3.1.1 Insulation Materials Use closed-cell foam insulation materials with flame retardant grade of B1. The heat conductivity is not greater than 0.035 w/(m· k) when the average temperature is 0° C. 6.3.1.2 Thickness of the Insulation Layer ≤...
  • Page 74 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 6.3.2 Insulation for the Condensate Water Pipe System 6.3.2.1 Thickness of the Insulation Layer Thickness of the insulation layer for the condensate water pipe must be greater than 10 mm (0.39inch). 6.3.2.2 Bond the insulation material joints with special glue and then wrap them with plastic adhesive. The width of the adhesive must be greater than 50mm (1.97inch) to prevent dewing.

  • Page 75: Electric And Controller Installation

    GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 7 ELECTRIC AND CONTROLLER INSTALLATION  Follow ordinance of your governmental organization for technical standard related to electrical equipment, wiring regulations and guidance of each electric power company.  Make sure to use specified wires for connections so that no external force is imparted to terminal connections.
  • Page 76 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL Method 2: Use different types of cables. The diameter of the power cable is larger than that of the communication cable. Alternatively, adopt three cores or more for the power cable and two cores for the communication cable. Elaborate the method with the installation personnel on site no matter which method is adopted.

  • Page 77: Installation Of The Power Cable

    GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 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 78 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL  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).  Don't install an individual switch or electrical outlet to disconnect each of indoor unit separately from the power supply.
  • Page 79 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL (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 80 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL based on the combination form of ODUs. For details, see the description on unit capacity configuration. 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.

  • Page 81: Installation Of The Communication System

    GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL NOTICE! Provide a threading rubber ring when threading a strong power cable or a communication cable. 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.
  • Page 82 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 7.3.1 Connection of Communication Cable Terminals All connections for communication of GMV5 are fastened by screws. 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 83 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 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 84 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL Communication cable connection for the multi-module system:...
  • Page 85 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 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.) ②...
  • Page 86 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 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 87 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL select code 02. And then press ―ENTER/CANCEL‖ to finish setting. Press ―ENTER/CANCEL‖ to return to the previous display until you exit from the setup of parameter values. Below are user‘s parameter settings: Parameter Parameter Default Parameter scope...
  • Page 88 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL Model of Remote Connection Wire Main Board Interface of Indoor Unit Type Receiving LED Panel Type Corresponding Indoor Unit Dsp1 (interconnected to the 8-core Inter-board connecting interface) Air duct-type indoor unit JS05 line (17 cores) Dsp2 (interconnected to the 9-core interface) IDU type...

  • Page 89: Vacuumization And Desiccation For The Refrigerant System

    GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 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

    GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 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. 8.2 VACUUMIZATION AND DESICCATION FOR THE SYSTEM 8.2.1 Requirements on the Vacuum Pump The vacuum pump for different refrigerant systems cannot be the same.
  • Page 91 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL the regulator valve does not increase. 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.

  • Page 92: Refrigerant Perfusion

    GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 9 REFRIGERANT PERFUSION 9.1 CALCULATION METHOD FOR PERFUSING REFRIGERANT Outdoor unit has been charged refrigerant before delivery. Charge additional refrigerant for field-installed connecting pipe. If the pipeline is longer than 1m(39-3/8inch), please refer to the following table for charging amount of refrigerant. (Liquid pipe prevails) How much additional refrigerant should be charged Total refrigerant charging amount R= Pipeline charging amount A + ∑charging amount B of every...
  • Page 93 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL So, Σ Refrigerant charging amount B of every module=4.0+4.0+4.0=12kg (8.8+8.8+8.8 =26.4pounds). Suppose the Pipeline charging amount A=Σ Liquid pipe length × refrigerant charging amount of every 1m (or 1inch) liquid pipe=25kg (55.1 pounds) Total refrigerant charging amount R=25+12=37kg (55.1+26.4=81.5pounds).

  • Page 94: Method For Perfusing Refrigerant

    GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 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 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 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 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 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 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL CHAPTER 3 COMMISSIONING OPERATION...

  • Page 98: Chapter 3 Commissioning Operation

    GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL CHAPTER 3 COMMISSIONING OPERATION 1 SECURITY REQUIREMENTS 1.1PRECAUTIONS FOR CONSTRUCTION  All commissioning and maintenance personnel must learn and strictly comply with construction security specifications. Security measures must be taken especially for outdoor operations. ...
  • Page 99 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 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 Centralized addresses of different centralized control is required.
  • Page 100 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 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. Otherwise, the system may work abnormally or even the compressor may be damaged.
  • Page 101 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL (SA3_COMP-E) is used for aftersales emergency settings when an exception occurs on a compressor. It can shield the operation of the abnormal compressor in a short time and guarantee the emergency operation of other compressors. When it is required to shield the operation of 2#-6# compressors upon failure, set the DIP switch according to the following methods: Compressor Emergency Operation DIP Switch (SA3_COMP-E)
  • Page 102 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL ⑤ The system cannot continually run for more than 24 hours in compressor emergency operation status. Once 24 hours are exceeded, the entire unit will be forcibly stopped and the limited operation code ―Ad‖ is displayed on the IDU. ⑥...
  • Page 103 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 1.3.1.5 Fan Emergency Operation DIP Switch (SA5_FAN-E) The fan emergency operation DIP switch (SA5_FAN-E) is used for aftersales emergency settings when an exception occurs on a dual-module fan. It can shield the operation of a fan in a short time and guarantee the emergency operation of the system.
  • Page 104 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 1.3.1.6 Outdoor Fan Static Pressure Setting DIP Switch (SA6_ESP_S) The outdoor fan static pressure setting DIP switch (SA6_ESP_S) is used in special scenarios such as the unit installation equipment room. In scenarios where air ducts are required to be connected, zero static pressure (0 Pa), low static pressure (30 Pa), medium static pressure (50 Pa), and high static pressure (82 Pa) can be set according to the design of air ducts.
  • Page 105 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 1.3.1.9 DIP Switch Example (1) Explanation of DIP switch positions On the DIP switch, ―ON‖ indicates ―0‖ status and the opposite direction indicates "1‖ status. The position of white lever indicates the position to be set to. (2) Example The following takes master unit settings as an example.
  • Page 106 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 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 107 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 1.3.2.2 Introduction to Functions (1) List of functions Factory Settings Function Function Function Meaning Remark Code Name Code Meaning Fully or partially recovers refrigerants in a faulty Refrigerant module or IDU pipeline according to the system It can only ——...
  • Page 108 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL (2) Description of Functions 1) A2 Refrigerant recovery operation This function partially recovers refrigerants in a faulty module or IDU pipeline during unit maintenance. The refrigerant recovery volume of each basic module is as follows: Model of Basic Module Maximum Refrigerant Recovery Volume GMV-72WM/B-F(U)
  • Page 109 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL Starting the Silent Mode X Hours Stopping the Nighttime Silent Mode Silent Mode after the Daytime Temperature Noise Degree after Continual Operations for Y Hours Reaches the Highest Mode 1 Mode 2 Mode 3 Low-noise Mode 4 mode...
  • Page 110 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL The highest capacity output limitation is set when users require forcibly limiting the system power consumption. The setting scope is as follows: Code Highest Output Capacity 100% (factory settings) Note: The cooling or heating effect may fall off after the capacity limitation is set. 8) n5 Indoor unit project number offset This function sets the IDU project number when multiple refrigerating systems are controlled in a centralized manner (by using a remote monitor or centralized controller), avoiding the same project...
  • Page 111 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 1.3.3 Function Setting Operations Step 1: Open the commissioning window of the master unit panel. Step 2: Power on the entire unit. Step 3: Press "SW3" on the master unit to enter the to-be-selected status of function settings. By default, the master unit is displayed as follows: LED1 LED2...
  • Page 112 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 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 LED3 Function Code Display Mode Silent Mode Code Display Mode...
  • Page 113 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL as follows: 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)". LED1 LED2 LED3...
  • Page 114 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL Function Display Refrigerant Recovery Display Display Current Status Code Mode Code Mode Mode [Module low-pressure Ps] 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 115 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL Blinking Blinking Enter the to-be-confirmed status of system vacuuming mode settings. 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...
  • Page 116 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL When the unit reaches defrosting quit conditions, the system automatically quits and restores the normal operation control. (7) n4 Highest capacity output limitation settings Step 1: Confirm entering the n4 highest capacity output limitation settings. The master unit is displayed as follows: LED1 LED2...
  • Page 117 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 1.3.4 Function Query Operations Step 1: Open the commissioning window of the master unit panel. Step 2: Power on the entire unit. Step 3: Press "SW4" on the master unit to enter the query status. Step 4: Select a function to be queried by pressing "SW1 (UP)"...
  • Page 118 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL Step 7: If the n6 fault query is selected, the display is as follows. Enter the to-be-confirmed status of fault query. LED1 LED2 LED3 Function Code Display Mode Current Progress/Mode Display Mode Current Status Display Mode Blinking Blinking...
  • Page 119 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL The display is as follows: LED1 LED2 LED3 Function Display Fault Display Mode Current Status Display Mode Code Mode Sequence Displayed alternately Displayed alternately Historical fault/module address Displayed alternately Displayed alternately Displayed alternately "01-05"...
  • Page 120 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL This parameter is invalid for the Discharge temperature of compressor 3 ° C GMV5 series. This parameter is invalid for the Discharge temperature of compressor 4 ° C GMV5 series. This parameter is invalid for the Discharge temperature of compressor 5 °...
  • Page 121 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL to-be-confirmed status of ODU bar code query. LED1 LED2 LED3 Function Code Display Mode Current Progress/Mode Display Mode Current Status Display Mode Blinking Blinking Blinking Press "SW7" on the master unit to enter the next-level menu selection. The display is as follows: LED1 LED2 LED3...
  • Page 122 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL LED1 LED2 LED3 Parameter Code Display Mode Parameter Code Display Mode Parameter Code Display Mode On/Off ↓ LED1 LED2 LED3 Parameter Code Display Mode Parameter Code Display Mode Parameter Code Display Mode Blinking Blinking ↓...
  • Page 123 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 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. In this mode, the system does not detect the Press "SW4"...

  • Page 124: Commissioning Process

    Only a qualified unit can be delivered for use. 2.2 REQUIRED FILES AND TOOLS FOR ENGINEERING COMMISSIONING 2.2.1 Required Tools for Engineering Commissioning of GREE VRF Inner hexagon spanner Digital thermometer...

  • Page 125: 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 126 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL Does the stop valve of outdoor unit reach the maximum opening degree? leakage? 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 127 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 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 128 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL Remarks: 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 129 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL Do main boards correctly communicate with each other between outdoor unit modules? Are DIP switches of the master outdoor unit correctly set? Does the master outdoor unit correctly communicate with the indoor unit? Are indoor units correctly connected with each other? Does the indoor unit correctly communicate with the wired controller?
  • Page 130 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL Do communication cable materials comply with unit design requirements? Are all communication cables of IDUs and ODUs serially connected? Is the last-communicating IDU installed with a communication-matched resistance? What is the load of the selected IDU model? Is the foundation of ODU firm? Do shock absorption and water drainage comply with requirements? Are basic modules installed on the same horizontal line? Does the drainage pipe of IDU retain a 1/100 ratio of slope?
  • Page 131 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 2.3.3 Commissioning Operation 2.3.3.1 Precautions (1) Before starting commissioning, make sure that the unit compressor has been preheated for more than eight hours and check whether preheating is normal by touching. Commissioning can be started only when preheating is normal.
  • Page 132 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL (5) Before commissioning, make sure that appending refrigerants to pipes has finished completely or for more than 70%. (6) The following table describes progress display of each phase during commissioning: Progress Description for Commissioning Phases ——...
  • Page 133 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL The system detects communication failure between master unit and inverter fan driver. The rated capacity ratio is over-high between IDUs and ODUs. The rated capacity ratio is over-low between IDUs and ODUs. The system completes detection and automatically enters the next step.
  • Page 134 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL —— —— —— —— —— —— No meaning. —— —— —— —— —— —— No meaning. The system is in cooling-mode commissioning operation (the system automatically selects the commissioning operation mode without needing manual settings). Corres A fault occurs on the pondin...
  • Page 135 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL the main board of ODU. The other is to perform commissioning on a PC through professional software. Parameters of the ODU and IDU can be simultaneously displayed and historical data can be stored and queried with the second method.
  • Page 136 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL Commissioning Progress Code Status Code Code Progress LED1 LED2 LED3 Meaning Display Display Display Code Code Code Status Status Status The system does not set any master unit, and a master unit should be set. The system sets more than two master 01_Master units, and a master unit should be set...
  • Page 137 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL  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 138 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL Commissioning Code Progress Code Status Code LED1 LED2 LED3 Progress Display Code Display Status Code Display Status Code Status 04_Indoor unit quantity confirmation  It is very important to correctly confirm the number of IDUs. If the confirmed quantity is inconsistent with the actual quantity, the system may improperly run.
  • Page 139 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL If no exception is detected, the main board is displayed as follows and the unit automatically enters the next commissioning step. Commissioning Code Progress Code Status Code LED1 LED2 LED3 Meaning Progress Display Display Display Code...
  • Page 140 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL Commissioning Progress Code Status Code Code Progress LED1 LED2 LED3 Meaning Display Display Display Code Code Code Status Status Status XXXX/Corre The system detects 07_Component sponding component failure of detection for IDU fault code IDU.
  • Page 141 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL follows and the unit automatically enters the next commissioning step. Commissioning Code Progress Code Status Code LED1 LED2 LED3 Progress Meaning Display Display Display Code Code Code Status Status Status The system detects that 09_Pre-startup refrigerants are normal and refrigerant...
  • Page 142 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL detection opened. Step 15: Unit commissioning step 11 is manually calculated refrigerant perfusion status. Without operations, the system gives a function prompt and automatically enters the next step. Step 16: Unit commissioning step 12 is unit commissioning startup confirmation. To avoid enabling the unit before all preparations are completed, it is required to confirm again whether to enable the unit.
  • Page 143 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL The fault code "U8" is displayed after three seconds. For example, if a U8 fault occurs on IDU 100, LED3 will circularly display "01", "00" (two seconds later), and "U8" (two seconds later). B.
  • Page 144 (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). Step 2: Completely cover the front panel of ODU.
  • Page 145 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL Click "Start" to enter the commissioning function and the software automatically performs commissioning. " " indicates that commissioning is being performed on the phase and " " indicates that commissioning is passed on the phase.
  • Page 146 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 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 147 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL " " 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).
  • Page 148 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL Before 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 149 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL Completion". Note: During commissioning, users must listen to the operating sound of outdoor and indoor fans and compressors to check for exceptions. 2.3.3.4 Operations after Commissioning Sort and save data. Make detailed records of exceptions and troubleshooting methods during commissioning for later maintenance and query.

  • Page 150: References For Proper Unit Operation Parameters

    GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 2.4 REFERENCES FOR PROPER UNIT OPERATION PARAMETERS Commissioning Item Parameter Name Unit Reference Value Outdoor —— ° C/℉ 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 151 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL paramete quantity, without communication failure. ●The drainage effect of IDU is smooth and thorough, and no adverse-slope water storage exists in condensing Drainage —— — drainage pipes. The ODU can implement drainage system completely from the drainage pipe, without drops from the unit foundation.
  • Page 152 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL CHAPTER 4 MAINTENANCE...

  • Page 153: Chapter 4 Maintenance

    GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL CHAPTER 4 MAINTENANCE 1 FAILURE CODE TABLE 1.1 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 sensor Malfunction of entry-tube temperature...
  • Page 154 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 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 abnormal Current sensor of compressor 4 is Low-pressure protection...
  • Page 155 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL Malfunction of inlet tube temperature Oil-return pipe is leaking sensor of condenser malfunction of driving board of Malfunction of outlet tube temperature compressor sensor of condenser Driving board of compressor operates High-pressure sensor and low-pressure abnormally sensor are connected reversely Voltage protection of driving board power...
  • Page 156 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL Malfunction of jumper cap AC input voltage of drive of inverter fan Web address of IDU is abnormal...
  • Page 157 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 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 Emergency status of compressor Refrigerant-lacking protection Emergency status of fan...
  • Page 158 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 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 Heat pump function setting code of IDU...

  • Page 159: Exception And Troubleshooting

    GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 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: C01 Indoor project number and fault enquiry...

  • Page 160: Exception Analyzing And Troubleshooting

    GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 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 161 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 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 2) Check if the cable connecting the control board Communication not connected.
  • Page 162 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL modes or be turned on or off. The whole device cannot be started before the conflict is solved. The commissioning software will show the following page: Figure 1 (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.
  • Page 163 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL Figure 2 If project commissioning is finished and the IDU where the conflict occurs needs to be set separately. Click Project Number Conflict, as shown in Figure 3. The pop-up box comprises two parts: conflicting IDU box, showing the IDU's project number, system number and time;...
  • Page 164 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL Figure 4 If the conflict is solved, the system will return to the normal status and IDUs can be operated, as shown in Figure 5:...
  • Page 165 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL Figure 5 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 166 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL Figure 7 If the conflict is solved, the system will return to the normal status and IDUs can be operated as shown in Figure 5. ①Manual setting on the communicator and remote controller: When the project number conflict occurs, you can use the communicator or remote controller to revise project numbers and solve the conflict.
  • Page 167 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL IDU project numbers in all systems will automatically deviate. The conflict will be solved in about 1 minute and the system will work properly. The automatic deviation function only works when it is enabled on the controlling unit in the system, of which the centralized control address is 00000.
  • Page 168 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL connected properly; 2. Reconnect the compressor's UVW 3. The compressor is damaged. cable; 3. Replace the compressor. 1. Check the power supply of the control board. Replace the control 1. The control board is powered off; board if it works properly;...
  • Page 169 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 2.2.1.2 System faults (1) System exhaust temperature exception Possible reasons Faul Primary reason Secondary reason Tertiary reason Fault Solution Descriptio Confirmatio Descriptio Confirmatio Descriptio Confirmatio code n method n method n method 1. The stop valve of Fully the ODU is...
  • Page 170 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL Possible reasons Primary reason Secondary reason Tertiary reason Fault Solution Confirmat Descripti Confirmation Confirmatio Descripti Description method n method method Touch the pipe along the flowing 3.1 The fluid Replace and —— —— direction of pipe is solder the pipe.
  • Page 171 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL Possible reasons Faul Primary reason Secondary reason Tertiary reason Fault Solution Confirmation Confirmatio Descriptio Confirmatio Description Description method n method n method Stop the whole system. Test the system's balance pressure 20 minutes later and convert the pressure Discharge...
  • Page 172 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL Possible reasons Primary reason Secondary reason Tertiary reason Fault Fault Solution code Confirmation Confirmation Confirmation Description Description Description method method method When the 1.2.1 The Connect system is control working in the wire of the electronic heating mode electronic...
  • Page 173 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL Possible reasons Primary reason Secondary reason Tertiary reason Confi Fault Solution rmati Descripti Confirmation Descriptio Confirmation Description method method meth When the system 2.1.1 The Reset the is working IDU. Listen control wire of Connect the Manu 2.1 The...
  • Page 174 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL (2) Pressure exception Possible reasons Fault Primary reason Secondary reason Tertiary reason Fault Solution code Confirmation Confirmation Confirmation Description Description Description method method method 1. The stop valve of the Fully ODU is not Manual open ——...
  • Page 175 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL Possible reasons Primary reason Secondary reason Tertiary reason Confir Fault Solution Desc Confirm mation riptio ation Description Confirmation method Description metho method It is a 3.1 In the normal cooling mode, phenomen the outdoor Measure outdoor ——...
  • Page 176 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL switch. Possible reasons Primary reason Secondary reason Tertiary reason Confir Confir Confir Fault Solution Descri mation mation mation Description Description ption metho metho metho 6.1.1 The power cable Reconnect the Manua connecting the motor and motor with the l check main board is loose.
  • Page 177 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL Possible reasons Primary reason Secondary reason Tertiary reason Confir Fault Solution Confirm mation Description Description Confirmation method Description ation metho method 1. The stop valve of the Fully open Manual —— —— —— ——...
  • Page 178 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL Possible reasons Primary reason Secondary reason Tertiary reason Confi Confir Fault Solution rmati Descr mation Descrip Confirmation method Description iption metho tion meth Connect the stop valves of 4.2 The the module high- and high low-pressure gas pipes to pressur...
  • Page 179 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL (3) Poor cooling/heating performance Possible reasons Primary reason Secondary reason Tertiary reason Feedback Exception Solution Confirm from user Descriptio Descripti Confirmation Descripti Confirmati ation method on method method 1. The stop valve of the Fully open ODU is Manual...
  • Page 180 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL Possible reasons Primary reason Secondary reason Tertiary reason Feedback Exception Solution Confirm from user Descripti Confirmati Descripti Confirmati Description ation on method on method method 3.2 The outdoor Measur ambient e the It is a temperature outdoor normal...
  • Page 181 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 2.2.2 Flowchart Analyzing (1) High exhaust temperature protection (E4) When the system shows high exhaust temperature protection for compressor, the IDU will show high exhaust temperature fault E4, while the IDU will show the specific faulty compressor. For example, when high exhaust temperature protection is enabled on compressor 2# of module 3# of the ODU, IDUs will show E4 and the module will show E6, indicating that high exhaust temperature protection is enabled on compressor 2#.
  • Page 182 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL (2) Low exhaust temperature protection (E2) E2 low discharge temperature protection Does the electronic expansion valve Check the electronic work properly when the indoor unit is expansion valve. started or halted? Is the signal cable well Re-connect the connected to the main board signal cable.
  • Page 183 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL E1 system high pressure protection Is the reading on the Replace the main board of Check the high-pressure external pressure gauge the outdoor unit higher than 4.2 MPa? switch Replace the pressure sensor Check the high-pressure Replace the main board of the outdoor unit...
  • Page 184 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL (4) System low pressure protection (E3) 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 185 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL (5) System refrigerant lacking protection (U4) Refrigerant lacking protection (U4) Test the system's high pressure 30 minutes after the whole machine is halted Transfer the tested high pressure into the corresponding saturation temperature Is the saturation temperature corresponding to the high pressure five or Is the system injected with...
  • Page 186 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL (6) System high pressure ratio protection (J8) System high pressure ratio protection Restart the system and test the pressure at the valve of the high pressure and low pressure pipe. Compare the tested value with that tested by software The high pressure...
  • Page 187 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL (7) System low pressure ratio protection (J9) System low pressure ratio protection Restart the system and test the pressure at the valve of the high pressure and low pressure pipe. Compare the tested valve with that tested by the software The high pressure...
  • Page 188 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL (8) Indoor unit anti-freezing protection (L5) Indoor unit's E2 anti-freezing protection Is the indoor temperature Normal protection lower than 23 Celsius degrees? Is the indoor unit's Check the motor motor working properly? Check the electronic Is the indoor unit's electronic expansion valve working expansion valve...
  • Page 189 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL (10) Temperature sensor fault The temperature sensor fails Is the temperature sensor's Reconnect it or replace terminal the terminal. properly connected to the main board? Unplug the temperature sensor. Is Replace the resistance normal when the sensor temperature sensor.
  • Page 190 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL (12) Analyzing of drive control system faults When the unit fails and halts, first check the two-digit nixie tube of the control board and fault table to find out the specific fault. Then check and solve the fault according to the following methods. 1) Communication failure between the compressor's drive board and control board (outdoor fault If the LED of the control board is off, Check if the control board and...
  • Page 191 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 2) Faults in the IPM temperature sensor of the variable-frequency compressor's drive board (IDU fault P7), current detection circuit (ODU fault PC), drive module reset protection (ODU fault P3) and out-of-step protection (ODU fault P9) P3, P7, P9 or PC Check if the fault is solved after turning on the system for three...
  • Page 192 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL Attachment: How to check whether the IPM module is damaged a. Preparation: Find a digital multi-meter and switch it to the diode. Remove U, V and W cables of the compressor from the drive board two minutes after the system is powered off. Make sure that it is tested at least two minutes after the system is powered off.
  • Page 193 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 4) Variable-frequency compressor drive board IPM over-temperature fault (ODU fault P8) Check if the fault occurs Replace the compressor's when the system is drive board. powered on. Check if the IPM module is Screw the IPM module screwed well and thermal gel is properly and apply thermal gel...
  • Page 194 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 6) High voltage protection for the DC bus of the variable-frequency compressor's drive board (ODU fault PH) Lower the voltage of Check if the voltage of the the input power cable whole system's input power to 380 V.
  • Page 195 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 8) Variable-frequency compressor starting failure (ODU fault PJ) Restart the system five minutes after shutting down it to see if the failure is solved. Reconnect the Check if the compressor's compressor's UVW UVW cable is connected cable.
  • Page 196 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL (13) Analyzing of faults in the variable-frequency fan drive's control system 1) Communication failure between the fan's drive board and control board (outdoor fault C3) Replace the control board if its Check if the control board LED is off;...
  • Page 197 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 3) Variable-frequency fan over-current protection and IPM module protection faults (ODU fault H5 and H6) H5 or H6 Check if the IPM module is Replace the fan's drive damaged according to the board method mentioned in Attachment 4.3.
  • Page 198 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 4) Variable-frequency fan drive board IPM over-temperature fault (outdoor fault H8) Check if the fault occurs Replace the fan's drive after the system is board. power on. Screw the IPM module properly and apply thermal Check if the IPM module is gel on its surface.
  • Page 199 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 5) High voltage protection for the DC bus of the variable-frequency fan's drive board (ODU fault HH) Lower the voltage to 380 V. Check if the voltage of the whole system's input power cable exceeds 410V The fan's drive board is faulty and needs to be...
  • Page 200 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 7) Variable-frequency fan starting failure (ODU fault HJ) Reconnect it Check if the fan's UVW properly. cable is connected properly. Replace the fan's drive board to see if the fault is solved. The fan is faulty and needs to be replaced.

  • Page 201: Key Parts Maintenance

    GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 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 202 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL After AP1 DIP setting and all wiring, power on the master ODU AP1 and check whether D3 and D4 LEDs are flashing. See the figure below: Inter-system IDU and ODU Main Power Running Reserved communication communication...
  • Page 203 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL Capacity DIP: S1 (Capacity) Jumper cap: U22 (Jump) Overflow detect terminal: CN35(WATER-DTCT) Fan overload detect terminal: CN36(OVC-FAN) CN35 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 204 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 3.1.2.3 Cautions on Replacement of Master IDU AP1 If the AP1 of the master IDU needs to be replaced, after the IDU is powered on, ―No master IDU (L7)‖ or ―Project number conflict (C5)‖ alarm may be reported. (1) Troubleshoot for ―no master IDU (L7)‖...
  • Page 205 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL In some cases, the created project number is identical to that of a unit within the network. In this case, you can use the ―one-key IDU project number reset‖ function. However, this function will cause the project number of the entire system to be re-distributed;...
  • Page 206 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 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, Reset the master IDU through the wired control;...

  • Page 207: Compressor Replacement And Cautions

    GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 3.2 COMPRESSOR REPLACEMENT AND CAUTIONS 3.2.1 Determining Compressor Fault 3.2.1.1 Precondition: Units can be normally started. Step 1: If units can be normally started, start the units so as to measure line current of the faulty compressor. Use a pressure gauge to measure pressure of various valves and connect the gauge to a PC for viewing test data.
  • Page 208 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL NOTE: You can infer from the preceding figures the current of the compressors operating at other frequency bands. (2) For inverter compressor E405DHD-38A2YG: The figure below shows current curves that change with evaporating temperature and condensing temperature while the compressor works at 30 Hz.
  • Page 209 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL NOTE: You can infer from the preceding figures the current of the compressor operating at other frequency bands. Step 2: Check whether the compressor sounds sharp or rubs. Compare the sound of the faulty compressor with that of normal ones.
  • Page 210 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL Description of electric expansion valve: Touch the upper part of an electric expansion valve and you will feel its vibration while units are being powered on Make sure the coil is fixed and firm 2) Four-way valve: While this valve is normally running, the four copper pipes connected to it will suffer different temperature.
  • Page 211 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL Here is the position of a 4-way valve within a unit. DO NOT touch it. The exhaust pipe it connects with transmits high-temperature refrigerant which may scald you D – Connects to exhaust. Watch out for scald! Labels on the 4-way valve and their meanings: D –...
  • Page 212 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL Oil balance Solenoid valve 2 valve Oil balance valve 1 Step 4: Test the compressor drive, namely the IPM module, to see whether it is normal. 1) Disconnect the power supply. Five minutes later, remove the line of the faulty compressor. 2) Set a multimeter to gear diode.
  • Page 213 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 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). In normal cases, the multimeter should read 0.39±0.3 V.
  • Page 214 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 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). In normal cases, the multimeter should read 0.39±0.3 V.
  • Page 215 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 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. Step 2: Measure resistance between two wiring terminals (U, V, W).
  • Page 216 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 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. Open the oil checking valve.
  • Page 217 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 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 218 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 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. 2.
  • Page 219 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 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 follows: NOTE: While drawing liquid out from the gas...
  • Page 220 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 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 221 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL system. 1) Clear the balance pipes. 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.
  • Page 222 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 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 223 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 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 224 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL The sealing rubbers for various parts must be intact NOTE: Compressor lubricant must be kept completely airtight. Hitachi compressors use special lubricant FVC68D or FV-68H whose moisture absorption capability is high. Requirements on air-tightness of these compressors are higher.
  • Page 225 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 2. Connect the inlet pipe of the separator with the outlet pipe 3. Weld the pipes together 1. Put the gas/liquid separator on a 4. Screw the proper position separator onto the chassis Step 9: Install a new oil balancer.
  • Page 226 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 2. Weld the connecting pipes of the oil separator 1. Put the oil separator on a proper position 4. Weld the oil return components 3. Screw the oil separator Step 11: Install a new compressor. If it is a inverter compressor that needs replacement 1.
  • Page 227 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL wiring are correct. You are advised to replace them one after another. NOTE: Keep wiring identical to factory installation. Control varies with compressors. Wrong wiring or inverse connection of the compressors may cause damage to units. Cautions on replacement of compressors: 1) Before installing new compressors, remove the sealing rubbers and weld the compressors with corresponding pipes.
  • Page 228 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 229 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 230 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL Open all valves in order that the vacuum pump extracts air through all the valves Oil checking valve If the maintenance work involves multiple parts, extract air of the balance pipe independently Low pressure check valve Liquid Balance...
  • Page 231 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 2） If the refrigerant is proved satisfactory, fill refrigerant of the combined amount of the rated amount (specified on the nameplate) and the calculated refrigerant loss amount. For a multi-modular unit system, if only the refrigerant of an ODU is drawn out, add 80% refrigerant of the rated fill amount (specified on the nameplate of the ODU) and start the system for a debugging test.

  • Page 232: Cautions On Compressor Drive Replacement

    GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 3.3 CAUTIONS ON COMPRESSOR DRIVE REPLACEMENT (1) Disconnect the power supply of the system. Set a multimeter to the AC voltage gear and measure voltage between two of the lines (L1, L2, L3, and N). The measuring result should be 0 V (sometimes, multimeters may be faulty and read false values).
  • Page 233 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL (3) Disconnect all lines of the compressor drive, including: compressor line; communication line between the master unit and the drive; communication line between the compressor drive and fan drive; compressor drive output 18 VDC; bridge rectifier output P; bridge rectifier output N; compressor drive output 540 VDC;...
  • Page 234 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL (5) Replace the compressor drive. Before the replacement, apply some silicone tape onto the IPM module.
  • Page 235 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL (6) Install a new compressor drive, screw and wire it.

  • Page 236: Assembling And Disassembling Key Parts Of Odus

    GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 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 237 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL ● Remove the compressor from the 5. Remove the compressor. chassis. ● Put the compressor in a proper position. 6. Install a new ● Use a wrench to screw the nuts on compressor on the the compressor.
  • Page 238 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 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 panels. 1. Loosen the hooks at ●...
  • Page 239 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL ●Put the valve in a proper position. ● Weld the valve with the pipeline. ●Before welding, cover the valve with wet cloth to avoid internal slide 5. Install a new from being burnt and prevent water four-way valve.
  • Page 240 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 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 panels. 1. Loosen the hooks at ●...
  • Page 241 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL ● Weld the connecting pipes with the electric expansion valve. ● Before welding, cover the valve with wet cloth. ●During welding, charge nitrogen 5. Install a new electric into the pipes. The pressure should expansion valve.
  • Page 242 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 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 panels. 1. Loosen the hooks at ●...
  • Page 243 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL ●Weld the four pipe joints with the oil separator. During welding, charge nitrogen into the pipes. The pressure should be controlled within 0.5± 0.1 kgf/cm2 5. Install a new oil (relative pressure). separator. Note: Avoid nearby parts from being burnt during welding.
  • Page 244 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 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 panels. 1. Loosen the hooks at ●...
  • Page 245 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL ●Put the gas/liquid separator based on the position of the suction and discharge pipes and weld the pipes with the gas/liquid separator. ●During welding, charge nitrogen 5. Install a new into the pipes. The pressure should gas/liquid separator.
  • Page 246 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 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 panels. 1. Loosen the hooks at ●...
  • Page 247 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL ●Screw the support of the heat exchanging board and fix the board onto the chassis. ●Put the heat exchanging board based on the position of the suction and discharge pipes and weld the 5.

  • Page 248: Unit Maintenance

    (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 249: Appendixes

    GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 4 APPENDIXES 4.1 MINUTES ABOUT A DEBUG SOLUTION CONFIRMATION MEETING Confirming air conditioner debug solution to the *** project Theme: *** Time: *** Place: *** Participants: *** Contents: *** 4.2 VISUAL INSPECTION CHECKLIST OF THE DEBUG SYSTEM Visual inspection checklist of *** air conditioning equipment Item Problem...

  • Page 250: Debug Parameter Record List

    GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 4.3 DEBUG PARAMETER RECORD LIST Project name Unit model Debugged by Date ODU rated capacity General IDU rated Total length of refrigerant (kW) capacity (kW) pipes (m) Maximum fall of IDUs Fill amount of refrigerant (kg) Debug state: Refrigerating Heating...

  • Page 251: Common Parameter Lists

    GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 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 22.34...
  • Page 252 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL -0.4 128.6 0.345 163.4 2.358 2.852 121.6 0.362 165.2 2.28 2.865 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...
  • Page 253 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 84.2 12.6 1.793 0.577 3.178 12.07 1.829 249.8 0.561 3.181 87.8 11.57 1.863 251.6 0.547 3.184 89.6 11.09 1.897 253.4 0.532 3.187 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...
  • Page 254 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 361.8 0.173 150.8 3.998 2.75 -20.2 339.8 0.183 152.6 3.861 2.766 -18.4 319.2 0.195 154.4 3.729 2.781 -16.6 0.206 156.2 3.603 2.796 -14.8 282.2 0.218 3.481 2.811 265.5 0.231 159.8 3.364 2.825 -11.2 249.9 0.245 161.6...
  • Page 255 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 62.6 28.68 1.356 235.4 0.9295 3.153 64.4 27.39 1.393 237.2 0.9043 3.157 66.2 26.17 1.429 0.8799 3.161 25.01 1.466 240.8 0.8562 3.165 69.8 23.9 1.503 242.6 0.8333 3.168 71.6 22.85 1.54 244.4 0.8111 3.171 73.4 21.85...
  • Page 256 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 147.2 4.289 2.717 0.2891 3.253 4.14 2.734 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 ℉...
  • Page 257 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 46.4 107.96 0.28 210.2 3.4128 2.46 48.2 102.85 0.292 3.3147 2.478 98.006 0.306 213.8 3.22 2.496 51.8 93.42 0.319 215.6 3.1285 2.514 53.6 89.075 0.333 217.4 3.0401 2.531 55.4 84.956 0.348 219.2 2.9547 2.547 57.2 81.052...
  • Page 258 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 14.618 1.34 294.8 1.0197 2.995 132.8 14.085 1.37 296.6 0.9971 3.001 134.6 13.575 298.4 0.9752 3.007 136.4 13.086 1.429 300.2 0.9538 3.013 138.2 12.617 1.459 0.9331 3.018 12.368 1.475 4.4.3 Voltage / pressure lists of pressure sensors 4.4.3.1 High-pressure sensor (R410a) Temperature Absolute pressure...
  • Page 259 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 21.2 95.8 0.619 3083 3.201 99.2 0.644 123.8 3154 457.3 3.277 24.8 102.5 0.668 125.6 3226 467.8 3.353 26.6 105.9 0.693 127.4 3300 478.5 3.432 28.4 109.3 0.718 129.2 3374 489.2 3.511 30.2 0.745 3450 500.3...
  • Page 260 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 15.8 0.515 42.8 140.5 2.235 -56.2 16.7 0.527 44.6 144.9 2.295 -54.4 17.5 0.539 46.4 1030 149.4 2.357 -52.6 18.4 0.551 48.2 1061 153.8 2.419 -50.8 19.3 0.563 1096 158.9 2.489 20.3 0.577 51.8 1125 163.1...

  • Page 261: Exploded Views And Spare Part List

    GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 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 10338702 Fan Motor 15704119...
  • Page 262 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL Throttle Assy 05374100006 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 4304413204 Plate-type Heat Exchanger 00904100005...
  • Page 263 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL Main Board 30223000005 AC Contactor 44010265 Terminal Board 42018000026 Modle GMV-96WM/B-F(U) Product Code CN851W1390, CN851W1391 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...
  • Page 264 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL Cut off Valve 07130239 Throttle Assy 05374100017 Electric Expansion Valve Sub-Assy 43044100162 Electric expand valve fitting 4304413203 Electronic Expansion Valve 07334390 Discharge Charge Valve 07334100002 One way Valve 04324001 Electric expand valve fitting 4304413204 Electronic Expansion Valve 07334412...
  • Page 265 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL Reactor 43138000049 Rectifier 46018000014 Main Board 30228000031 Main Board 30223000047 Radiator 4901800000201 Radiator 49018000001 Terminal Board 42018000558 Main Board 30223000005 AC Contactor 44010265 Terminal Board 42018000026 Modle GMV-120WM/B-F(U) Product Code CN851W1420, CN851W1421 Name of part Part code Quantity Rear Grill...
  • Page 266 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL Motor for Axial Fan Assy 15404100056 Axial Flow Fan Blade 10434100002 Fan Motor 15704119 Gas By-pass Sub- Assy 04634100012 Magnet Coil 4304410018906 Filter 07415200002 Electromagnetic Valve 43000054 Cover Plate 01264100005P Rear Grill 01574100001 Condenser Assy 0112410009001 Low Pressure Survey Valve Sub-Assy...
  • Page 267 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL Pressure Sensor 32218000008 Suction Pipe Sub-Assy 04574100114 Oil Separator 07424100023 Pressure Switch 4602000911 Pressure Switch 4602000912 Exhaust Trunk Sub-Assy '04534100012 Check Valve 07333700032 Gas By-pass Sub- Assy 04514100036 Magnet Coil (electromagnetic valve) 4304410018907 4-Way Valve Assy 04044100060 Filter...

  • Page 268: Remote Control

    GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL CHAPTER 5 REMOTE CONTROL...
  • Page 269 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL Contents CHAPTER 5 REMOTE CONTROL.................. 267 PART 1 ENGINEERING DEBUGGER 267 PART 2 REMOTE CONTROL 303 I. MODBUS GATEWAY REMOTE MONITORING SYSTE ................303 II. BACnet GATEWAY REMOTE MONITORING SYSTE ................370...

  • Page 270: Chapter 5 Remote Control

    So long as users have a PC, they can monitor and control air conditioning units through the software. Gree Debugger is an effective intelligent management tool for air conditioning systems and also a tool for engineering setup and after-sale debugging. With Gree Debugger, users can debug air conditioners...

  • Page 271: System Networking

    ODU only. 1.2.1 Composition of System Network From the network topology, it can be seen that Gree debugging network is composed of three parts: Control PC part in the monitor room, including Gree Debugger and USB Converter Driver installed in the PCs.

  • Page 272: Hardware

    Converts unit communication mode USB data converter ME40-00/B 30118000001 into PC recognizable communication mode This disk contains the Gree Debugger, Debugger suite (disk) DE40-33/A(C) 36400000003 monitor software, USB driver, and USB converter configuration software A line connecting a PC with the...
  • Page 273 CAN interface. This interface is not distinguished by polarity. Thus, the two contacts C1 and C2 can be used interchangeably. HBS interface: When air conditioners work in HBS mode, they are connected to the converter over this HBS interface. This interface is not distinguished by polarity. At present, Gree Debugger and monitor...
  • Page 274 1.3.4.2 Connecting Line Gree Debugger is accompanied with two lines: 1 m and 5.5 m. They are completely the same except the length. The line is connecting to the COM interface of an air conditioning unit at one end and to the CAN interface of a converter at the other end, as shown in the following figure.

  • Page 275: Software Setup

    If it is running automatically, the following page will appear. If not, double click the ―Launcher.exe‖ file to display the page. If it is the first time to use Gree Debugger, the following software needs to be installed: .Net Framework 4.0, USB Converter Driver, Access Driver (required for versions earlier than Office 2007), and Gree Debugger.

  • Page 276: Installation Procedure

    Install .Net Framework 4.0 Install Gree Debugger Install USB Converter Driver Install Gree USB data converter configuration software This is a simplified software setup procedure. For details, read the following section. 1.4.3 Installation Procedure 1.4.3.1 Installing .Net Framework 4.0 If your PC has been installed with .Net Framework 4.0 or later version, skip this step. Otherwise,...
  • Page 277 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL Loading file. Check ―I have read and accept the license terms‖ and click ―Install‖.
  • Page 278 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL Installing.
  • Page 279 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL Click ―Finish‖.
  • Page 280 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 1.4.3.2 Installing Access Driver Before the Gree Debugger can run, install the Access Driver (required for versions earlier than Office 2007). Click ―Install Access Driver‖. Click ―Next‖.
  • Page 281 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL Check ―I accept the terms in the License Agreement‖ and click ―Next‖.
  • Page 282 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL Click ―Browse‖ to select a path. If you want to use the default path, click ―Install‖. Installing.
  • Page 283 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL Click ―OK‖. 1.4.3.3 Installing Gree Debugger Before installing Gree Debugger, make sure your PC has been installed with .Net Framework 4.0 or later version. Click ―Install Gree Debugger‖.
  • Page 284 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL Click ―Next‖. Click ―Browse‖ to select a path. If you want to use the default path, click ―Next‖.
  • Page 285 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL Click ―Next‖. Installing.
  • Page 286 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL Click ―Close‖.

  • Page 287: Using Debugger

    ODUs and gateways. 1.5.1.4 Other Functions Gree Debugger also instructs users to connect units, and allows users to capture screens, open database files, rebuild database, and modify database file saving path. 1.5.2 How to Use Gree Debugger 1.5.2.1 Viewing Unit Parameters...
  • Page 288 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL Select a language. Select a unit.
  • Page 289 ―Connect‖ to access the parameter page. If not, follow the figure below to connect the units. Set COM interface. Gree Debugger will automatically detect available serial ports of your PC. You can select one of them.
  • Page 290 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL Set protocol. This is to choose a communication mode of your air conditioning units. At present, CAN is the proper communication mode.
  • Page 291 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL Click ―Connect‖. If units can be in normal communication with the PC, Gree Debugger will switch over to the parameter page. Otherwise, Gree Debugger shows it is being connecting.
  • Page 292 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL The following figure shows the compositions of the parameter page. You can click hide the unit information area and system information area. Within the IDU information area and fault information area, you can drag. Within the outdoor module information area, you can choose to show...
  • Page 293 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL one module only (by default, two modules are displayed at the same time in the proportion of 3:1). The menu bar can also be hidden by clicking . In the status bar, current sampling time and total sampling time are shown.
  • Page 294 Note that the debug function can be used for single-system network only. Click ―Start‖ to enable Gree Debugger and units automatically debug. indicates a currently debugging step and indicates a successfully debugged step.
  • Page 295 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL Steps that have the ―OK‖ button available enable users to continue further debug. Click corresponding debug information will be shown, enabling you to determine whether to continue debug. Click ―Close‖ to close the information. For step 3 ―Confirm ODU Basic Module NO.‖ and step 4 ―Confirm IDU NO.‖, quantity of units debugged will be shown;...
  • Page 296 In this case, users need to rectify the fault first. After the issue is addressed, Gree Debugger automatically continues the debug procedure if there is not an ―OK‖ button available; otherwise, users should click ―OK‖ to confirm. Click and corresponding debug information will be shown, helping you analyze the fault.
  • Page 297 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL (valve exception alarm), click ―Skip‖ to skip this step. For other fault causes, this button is greyed out. Steps 11, 13, and 14 are reserved. Steps 13 to 16 are concurrent steps. That is, only one of them will be executed at one time.
  • Page 298 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 1.5.2.3 Controlling Units In the menu bar, choose ―Setting‖ -> ―Parameter Settings‖. Shortcut menus ―Gateway Settings‖, ―IDU Settings‖, ―System Settings‖, ―Project Number Conflict‖, and ―System Historical Info‖ are available. Select one of them to set. Note that if project number of an IDU conflicts, other options will be greyed out. In this case, you need to set the ―Project Number Conflict‖...
  • Page 299 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL If you select ―IDU Settings‖, the following dialog box will appear. Check desired IDUs from the IDU Selection area. You can also click ―Select All‖ or ―Select Inverted‖ to check the IDUs. Parameter information of selected IDUs will be shown in the Settings area. Click ―Set…‖...
  • Page 300 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 1.5.2.4 Other Functions Capturing screen To capture a screen, click ―Capture Screen‖ in the menu bar. If you want to open the screen, click ―Open‖. Searching for database files To search for database files, click "Open Data Folder" to open the default folder that is saving database files.
  • Page 301 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL Changing pressure value Choose ―Others‖ -> ―Display Settings‖. In the displayed dialog box, you can set ―High Low Pressure Value‖ and ―Refrigerant Type‖. If you set ―High Low Pressure Value‖ to ―Temperature‖, the pressure parameter is changed to temperature;...
  • Page 302 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL Saving multi-system data Choose ―Others‖ -> ―Database Save Settings‖. For a multi-system network, you need to specify a system to save unit data. Since data volume of a multi-system network is large, you can select only a suite of system data to save.
  • Page 303 Debugger runs. Choose ―Others‖ -> ―Change Database Saving Path‖. In the displayed dialog box, click ―Browse‖ to select a path. Choose ―Others‖ -> ―Rebuild Database‖ to rebuild database. If Gree Debugger has run, you can stop the software and return to the connection page to operate.
  • Page 304 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL...

  • Page 305: Software Debug

    This is a simplified software debug procedure. For details, read the following section. 1.6.2 Troubleshooting 1.6.2.1 Installation A fault occurs during Gree Debugger setup. After you click ―Install Gree Debugger‖ to run, the following prompt is displayed. Cause: The .Net Framework 4.0 is not installed. Troubleshooting:...

  • Page 306: Remote Control

    Client: A PC for users to access server resources. Through the browser installed on this PC, users can access Gree CAC Remote Monitoring System of the server to perform unit control, data display, and management functions.
  • Page 307 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL Either Gree Web-based Remote Monitoring and Control System or BMS Internet Gree Web-based Remote Monitoring and Control System (server side) Other device Lighting Fire Vent Lift Electricity Gree Web-based Remote RS232-RS485 Monitoring and Control System...
  • Page 308 Composition of the System Network The network is composed of three parts: Gree CAC Remote Monitoring System of the monitor network, including an RS232-485 Optoelectronic Isolated Converter. Modbus gateways: They serve to bridge air conditioning unit network with the monitor network and transmit data between the networks.
  • Page 309 2.1.4.2 Modbus Gateway (1)Functions GREE Modbus gateways for the central air conditioning system are used to bridge the internal network of the air conditioning system (CANbus) and the monitoring network (Modbus). It will provide the Gree web-based remote monitoring and control system/BMS communication interfaces and is enabled to take the real-time monitoring and the long-distance control to the air conditioning system.
  • Page 310 CAN Interface: It is connected to the air conditioning system through twisted pairs so as to get through the communication between the Modbus gateway and the air conditioning system. RS485-1 Interface: It is connected to Gree Web-based Remote Monitoring and Control System/BMS through twisted pairs so as to get through the communication between the Modbus gateway and the Gree Web-based Remote Monitoring and Control System/BMS.
  • Page 311 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 98.5mm Running Alarm Power Address Function 296mm Gateway 177mm 56mm Length x Width x Height: 296 x 177 x 56 (mm) /11-5/8 x 7 x 2-1/4(inch) The Modbus gateway should be located inside the electric cabinet, hung up with the front side facing upwards and fixed with four bolts.
  • Page 312 (3) Communication System Installation The Modbus gateway works to get through the communication 1) Between the Modbus gateway and the Gree Web-based Remote Monitoring and Control System/BMS. 2) Between the Modbus gateway and the air conditioning system.
  • Page 313 (2) Connection of Communication Lines Precaution! Only serial connection is allowed for all communication lines of the Modbus gateway. The star connection is prohibited. 1) Communication lines between the Modbus gateway and the Gree Web-based remote monitoring and control system/BMS...
  • Page 314 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL Gree Remote Monitoring System/BMS System Gree Remote Monitoring System/BMS System 2) Communication lines between the Modbus gateway and the air conditioning system …… …… …… ODU system 1 ODU system 2 ODU system 1...

  • Page 315: Control System

    ODU system 2 ODU system n (3) Connection Steps 1) Connection between the Modbus gateway and the Gree web-based remote monitoring and control system Step 1: confirm the first Modbus gateway (Modbus gateway 1) to be connected to the Gree...
  • Page 316 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL web-based remote monitoring and control system, and then connect RS485-1 interface R+ and R- of this Modbus gateway to the optoelectric converter interface R+ and R- or BMS through communication lines. (see ①) Step 2: connect RS485-1 interface R+ and R- of Modbus gateway 1 to the second Modbus gateway (Modbus gateway 2) RS485-1 interface R+ and R- through communication lines.
  • Page 317 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL Projecting lever 2) Address DIP Switch——Modbus Gateway Address Setting The address DIP switch is intended to set the address of the Modbus gateway. Precaution! Before using this gateway, configure an address DIP switch first. This address must be unique in the same bus network;...
  • Page 318 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL When the Modbus gateway is located at either end of the CAN2 bus, it shall be coupled with a matched resistance and the eighth position should be set to ―0‖. When the Modbus gateway is located at neither end of the CAN2 bus, no matched resistance is required the eighth position should be set to ―1‖.
  • Page 319 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL In application of the Modbus gateway, an upper unit as the terminal unit is usually coupled with a RS485 matched resistance, so this gateway is factory defaulted to be without a matched resistance. When the Modbus gateway is required to be set with a matched resistance, the seventh position of this DIP switch should be set as shown in the figure above to ―0‖...
  • Page 320 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL (2) Indicating LED Running Alarm Power It flashes when the gateway receives data from the target equipment (like, the air conditioning system). It flashes when data is communicated to the target equipment (like, the air conditioning system).
  • Page 321 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL (3) Digital Inputs and Outputs This gateway supports five DIs (digital inputs) and five DOs (digital outputs). There is another reserved digital output DO 6. DI1...DI5 Digital inputs: binary (0/1) digital signals, applicable to passive inputs. DI 1: it is defined for the fire alarm input.
  • Page 322 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL Power supply...
  • Page 323 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL (5) Communication Debug...
  • Page 324 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL...
  • Page 325 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 2.1.4.3 Introduction of Optoelectronic Isolated Converter (1)Function Introduction The optoelectronic isolated converter is designed to convert the RS232 signal from the computer serial port into RS485 signal. It is only used when the user's BMS system uses RS232 communication mode.
  • Page 326 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL Interface Name Description Remark Accompanied power supply of Input AC220V~50HZ; Output 12~30V DC 800mA Power interface the converter Line A of RS485 connected to R+ on 485 terminal, and Communication Line B connected to R-. RS232 port connected to See related instructions interface RS232 on computer...
  • Page 327 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 2) The general optoelectronic isolated repeater at present can support 32 nodes and ensure completeness of their communication signals. When the communication nodes in the network exceed 32, the communication signal will become incomplete. To ensure reliable transmission and completeness of the signals, we require that repeater must be used when the number of nodes in the network exceeds A maximum of 30 Modbus gateways are supported between two repeaters.
  • Page 328 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL RS485 terminal Power LED Run LED Power line terminal RS485 terminal Interface Name Description Remark Accompanied power Power interface Input AC220V~50HZ; Output 12~30V DC 800mA supply of the repeater Line A of RS485 connected to R+ on 485 terminal, Communication interface See related instructions and Line B connected to R-.
  • Page 329 Windows Server 2003 versions, Windows 7 NOTE: Gree CAC Remote Monitoring System supports Windows Server 2003 SP2 or later versions and Windows 7. Windows Server 2003 SP2 is recommended because the server can better provide users with services in Windows Server 2003 SP2 system.
  • Page 330 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL This is a simplified software installation procedure. In practice, the software has realized ―one-click setup‖. You only need to select a proper OS for installation. See the following page:...
  • Page 331 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL For details, read the following section. (1) Installing Gree CAC Remote Monitoring System 1. Double click BASGuide.exe and the Setup Wizard is enabled. Follow the steps to install the software. 2. If the PC is not installed with Windows Installer 4.5, click ―Accept‖ in the displayed window and...
  • Page 332 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 3. If the PC is not installed with Microsoft.NET Framework 4, click ―Accept‖ in the displayed window and the Setup Wizard will install Microsoft.NET Framework 4 for you.
  • Page 333 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 4. If the PC is not installed with Microsoft SQL Server 2008 R2 Express, click ―Accept‖ in the displayed window and the Setup Wizard will install Microsoft SQL Server 2008 R2 Express for you.
  • Page 334 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 5. If the PC is not installed with Windows Image Component, click ―Accept‖ in the displayed window and the Setup Wizard will install Windows Image Component for you.
  • Page 335 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 6. Click ―Next‖ in the displayed window and select ―I Agree‖ on the ―License Agreement‖ page. Click ―Next‖ to install Windows Image Component.
  • Page 336 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL...
  • Page 337 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 7. After Windows Imaging Component is installed, the Wizard begins installing Windows Installer 4.5. A system restart window will be displayed after Windows Installer 4.5 is installed. Restart the system so as to continue. 8.
  • Page 338 11. While IIS or MSMQ is being installed, do not close the following window. It will automatically close after installation is finished. 12. When all components are prepared, the Setup Wizard instructs you to install Gree CAC Remote Monitoring System. Click ―Next‖.
  • Page 339 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 11. In the displayed window, select ―I Agree‖ and click ―Next‖ to continue.
  • Page 340 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 12. Select a path for installing the software. The default path is recommended. Continue to click ―Next‖. 13. When installation succeeds, ―BAS Manager‖ service is displayed. This service is an accompanied service. Do not click ―Stop‖.
  • Page 341 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 14. Several seconds later, the software SN window will appear. Click ―OK‖ to complete installation. NOTE: Send your software SN to a dealer of Gree. If you do not activate the software, it can be...
  • Page 342 30 days. Use the activation code the dealer sends to you to activate your software, and you can continue to use it. (2) Registration Software activation procedure is as follows: Choose ―Start‖ -> ―All Programs‖ -> ―Gree CAC Remote Monitoring System‖ -> ―Activate Software‖ and enter the correct activation code.
  • Page 343 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 2.1.5.4 Uninstallation Software uninstallation procedure is as follows: 1. Stop the ―BAS Manager‖ service. 2. Choose ―Start‖ -> ―Settings‖ -> ―Control Panel‖ and double click ―Add or Remove Programs‖.
  • Page 344 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 3. In the ―Add or Remove Programs‖ window, select ―Gree CAC Web-based Remote Monitoring and Control System‖ and click ―Delete‖ to delete the software.
  • Page 345 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 2.1.6 Software Debug This part describes how to debug the software after it is successfully installed and the client can communicate with the server (LAN-based access). For detailed software debug procedure, please refer to the Help of the software.
  • Page 346 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL b. Right click ―Local Connect‖ and choose ―Local Connect Properties‖. c. In the ―Local Connect Properties‖ window, select ―Internet (TCP/IP)‖ and click ―Properties‖. The ―Internet (TCP/IP) Properties‖ window appears. The ―IP Address (I)‖ is the IP address of the server PC.
  • Page 347 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL The following figure shows that the IP address of the PC is 172.16.63.245.
  • Page 348 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 2. Logging in to Gree CAC Remote Monitoring System via a browser a. Open a browser (for example, IE) on a PC and enter the IP address of the server. NOTE: Make sure the PC and the server PC are in the same LAN and can communicate with each other.
  • Page 349 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL client PC or the server PC does not connect to the LAN, causing both to fail to communicate. Troubleshooting procedure is as follows: 1. Check network lines of the server and client and make sure they connect to the LAN; 2.
  • Page 350 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL NOTE: ① The preceding figure is the page showed for initial server access. Software visualization requires Microsoft Silverlight to support. Therefore, a Microsoft Silverlight installation wizard will be prompted. Click ―Click now to install‖ to install the plugin. ②...
  • Page 351 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL...
  • Page 352 NOTE: If the quantity of conflict IDU numbers is not large, you are advised to manually set them using Gree Debugger, control panel, or remote control. Manual setting is applicable to intra-ODU conflicts only, not affecting numbers of other IDUs. If the quantity is large, automatic offset is...
  • Page 353 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL setting is applicable to initial installation and debug. 2.1.7.2 Communication Debug Between Modbus Gateways and Air Conditioning Units Step 1: Set matched resistance of CAN2 bus. CAN2 bus CAN2 bus …… …… ODU system 1 ODU system 2 ODU system 16 ODU system 1...
  • Page 354 According to the number range of IDUs to be processed by Modbus gateways, the first IDU should be numbered 1 or 129. For details, refer to section 1.4.2.4 ―Hardware Debug‖. 2.1.7.4 Communication Debug Between Modbus Gateways and Gree Remote Monitoring System After Gree Remote Monitoring system is installed, perform the following steps: Step 1: Configure Modbus serial port.
  • Page 355 ②In the displayed ―BAS Manager‖ window, click ―Start‖ to enable BAS Manager. Method 2 Choose ―Start‖ -> ―All Programs‖ -> ―Gree CAC Remote Monitoring System‖ -> ―Service Manager‖. In the displayed ―BAS Manager‖ window, click ―Start‖ to enable BAS Manager.
  • Page 356 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL Step 3: Log in to Gree CAC Remote Monitoring System. Step 4: Enter the ―Visual config‖ page and click ―Automatic detect‖.
  • Page 357 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL After detection, detected devices will be listed in the ―Net tree‖.
  • Page 358 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL Step 5: Complete an air conditioner list. Based on this list, users can check air conditioners of each building, storey, or apartment. Step 6: Create a visualization project. Enter the ―Visual config‖ page and create a project in the ―Project tree‖. Step 7: Define devices.
  • Page 359 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL selected devices. Step 8: Add the devices selected from the ―Net tree‖ into the ―Project tree‖. Click the rooms in the ―Project tree‖ one after another.
  • Page 360 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL Double click a room. Click ―Net tree‖ and select devices based on the air conditioner list. Drag the devices into the room. View the devices in the ―Project tree‖.
  • Page 361 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL Step 9: Save the project.
  • Page 362 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL Step 10: Enter the ―Visual navigation‖ page and you can monitor the air conditioners of the created project. Note: The devices also can be monitored in the ―Net tree‖ and ―Intelligent steward‖.
  • Page 363 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 2.1.8 Troubleshooting 2.1.8.1 Hardware Faults Hardware faults Symptom Possible Cause Troubleshooting The communications lines are Replace the communication not twisted pairs. lines with twisted pairs. Gateway damages. Replace the damaged gateway. Communication lines interrupt. Weld the interrupted lines.
  • Page 364 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL Possible cause: The database for the Remote Monitoring System on the server is not enabled. Solution: (1) Check whether the database for the Remote Monitoring System in the server is enabled. Right click ―My computer‖ and choose ―Manage‖ from the shortcut menu, and choose ―Services and Applications‖...
  • Page 365 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL following figure: Possible cause: Communication between the server and gateway fails. Solution: (1) Check whether a hardware fault exists. Check gateway running. For details, refer to section 7.1 "Hardware Faults". (2) If there is not hardware fault or the fault is addressed, restart BAS Service. There are two methods to restart BAS Service.
  • Page 366 SERVICE MANUAL Method b. Choose ―Start‖ -> ―All Programs‖ -> ―Gree CAC Remote Monitoring System‖-> ―Service Manager‖. In the displayed ―BAS Manager‖ window, click ―Start‖ to enable BAS Manager. 3. During remote monitoring, services are stopped abnormally. The BAS Manager icon in the status...
  • Page 367 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL Possible cause: Communication between the server and gateway fails. Solution: (1) Check whether a hardware fault exists. Check gateway running. For details, refer to section 7.1 "Hardware Faults". (2) If there is not hardware fault or the fault is addressed, restart BAS Service. There are two methods to restart BAS Service.
  • Page 368 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL Choose ―Start‖ -> ―All Programs‖ -> ―Gree CAC Remote Monitoring System‖ -> ―Service Manager‖. In the displayed ―BAS Manager‖ window, click ―Start‖ to enable BAS Manager. 4. After the server IP address is entered through IE on the client, "Internet Explorer cannot display...
  • Page 369 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL Possible causes: The server is not started. Network line of the server or the client is not properly connected. Server or client network is faulty, causing server access to fail. The IIS manager in the server abnormally disables the website. Solution: (1) Check whether the server is started.
  • Page 370 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL ②In the displayed ―cmd.exe‖ window, enter the IP address of the PC to be pinged through, for example ―Ping 192.168.0.122‖, if the following information is shown, the system can be used. ③If the following timeout information is displayed, network fails. Check network information.
  • Page 371 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL (5) If network is available but the client still cannot access the server website, you need to open the IIS manager. ①Choose ―Start‖ -> ―All Programs‖ -> ―Manage Tools‖ -> ―IIS Manager‖, as shown in the following figure: ②In the displayed ―IIS Manager‖...
  • Page 372 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL...

  • Page 373: Bacnet Gateway Remote Monitoring Syste

    Client: A PC for users to access server resources. Through the browser installed on this PC, users can access Gree CAC Remote Monitoring System of the server to perform unit control, data display, and management functions.
  • Page 374 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL In the network above, L3 is the line for RJ45 and L2 is the twisted pair line. Note: the total length of L2 can not exceed 500 m and a matched resistance shall be added at both ends.
  • Page 375 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL Default Router: 192.168.1.1. (2)Parts and Assembly See figures below for the real parts and final assembly of the BACnet gateway kit MG30-24/D2(B). Parts Name PCD3.M6340 PCD7.R-SD1024 PCD3.B100 PCD3.R600 Communication interface board ZTS6LA Battery Module PCD7.R560 (3)Parts Assembly The figure below shows assembly position of various parts of the BACnet gateway kits...
  • Page 376 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL The figure below shows final assembly of various parts of the BACnet gateway kits MG30-24/D2(B):...
  • Page 377 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 2.2.4.2 Interfaces and Indicating LEDs (1)Interfaces Interfaces as shown in the figure below are available. (2)Power Interfaces Power supply is input through the wiring terminals. Power Supply: 24VDC -20/+25% incl. 5% ripples as per EN/IEC 61131-2, 175mA/4.2W normal, 500mA/12W maximum. (3)Communication Interface Board...
  • Page 378 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL Description. Printed Mark Terminal Description 1/2: without the As shown in the figure above, when the switch is set to the end ―ON‖, it matched resistance indicates the matched resistance is S1(1) DIP switch added;...
  • Page 379 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL ○LED OFF ●LED ON ●/○LED flash CPU type PCD3.M6430 battery module Batt Halt Error Color Green Yellow ○ ● ○ ○ ○ ●/○ ○ ○ Run cond. ○ ● ○ ● Run with error ○...
  • Page 380 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL Start Self-diagnosis for approx. 1 sec. after switching on or after a Restart Normal processing of the user program after Start. Where a programming unit is connected via a PCD8.K11x in PGU mode (e.g.
  • Page 381 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL (4)I/O Module Indicating LED As shown in the figure above, E0, E1, E/A2, E/A3 indicating LEDs are marks for four inputs and E/A4, E/A5, A6, A7 indicating LEDs are marks for four outputs. Among them, when any one is the high-level input/output, the corresponding LED will light on.
  • Page 382 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 2. Installation in the Electric Control Cabinet The PCD3 CPUs and the module holders can be snapped onto the 35mm top-hat rail according to DIN EN60715 TH35 (formerly DIN EN50022). (Remember: the PCD2 needs two hop-hat rails). Mounting the PCD3 on the top-hat rail: (1) Press the bottom of the housing onto the mounting surface.
  • Page 383 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL The minimal required installation space is as shown in the figure below. 4. BACnet Gateway Topology As shown in the topological diagram below, the whole system consists of the internal network of the air conditioning units and BACnet/IP network.
  • Page 384 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL BMS system Gree Web-based Gree Web-based Remote Monitoring and Remote Monitoring and Control System (client) Control System (client) Router Gree Web-based Remote Monitoring and Control System (server side) BACnet gateway 1 BACnet gateway n...
  • Page 385 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL In the network above, L3 is the line for RJ45; L2 and L1 are the twisted pair line. NOTE: the total length of L2 cannot exceed 500m and a matched resistance shall be added at both ends.
  • Page 386 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL (3)Connection Between the BACnet Gateway and the PC There are two methods to connect BACnet gateways and PCs. 1. Cross Connection 2. Parallel Connection...
  • Page 387 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL (4) Connection Between the BACnet Gateway and Air Conditioners Twist pair, with the polarity the same as that of the master ODU (address DIP setting is 0).
  • Page 388 Windows 7 2003 SP NOTE: Gree CAC Remote Monitoring System supports Windows Server 2003 SP2 or later versions and Windows 7. Windows Server 2003 SP2 is recommended because the server can better provide users with services in Windows Server 2003 SP2 system.
  • Page 389 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL This is a simplified software installation procedure. In practice, the software has realized ―one-click setup‖. You only need to select a proper OS for installation. See the following page:...
  • Page 390 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL For details, read the following section. (1) Installing Gree CAC Remote Monitoring System 1. Double click BASGuide.exe and the Setup Wizard is enabled. Follow the steps to install the software: 2. If the PC is not installed with Windows Installer 4.5, click ―Accept‖ in the displayed window and...
  • Page 391 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 3. If the PC is not installed with Microsoft.NET Framework 4, click ―Accept‖ in the displayed window and the Setup Wizard will install Microsoft.NET Framework 4 for you.
  • Page 392 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 4. If the PC is not installed with Microsoft SQL Server 2008 R2 Express, click ―Accept‖ in the displayed window and the Setup Wizard will install Microsoft SQL Server 2008 R2 Express for you.
  • Page 393 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 5. If the PC is not installed with Windows Image Component, click ―Accept‖ in the displayed window and the Setup Wizard will install Windows Image Component for you.
  • Page 394 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 6. Click ―Next‖ in the displayed window and select ―I Agree‖ on the ―License Agreement‖ page. Click ―Next‖ to install Windows Image Component.
  • Page 395 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL...
  • Page 396 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 7. After Windows Imaging Component is installed, the Wizard begins installing Windows Installer 4.5. A system restart window will be displayed after Windows Installer 4.5 is installed. Restart the system so as to continue. 8.
  • Page 397 11. While IIS or MSMQ is being installed, do not close the following window. It will automatically close after installation is finished. 12. When all components are prepared, the Setup Wizard instructs you to install Gree CAC Remote Monitoring System. Click ―Next‖.
  • Page 398 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 11. In the displayed window, select ―I Agree‖ and click ―Next‖ to continue.
  • Page 399 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 12. Select a path for installing the software. The default path is recommended. Continue to click ―Next‖. 13. When installation succeeds, ―BAS Manager‖ service is displayed. This service is an accompanied service. Do not click ―Stop‖.
  • Page 400 14. Several seconds later, the software SN window will appear. Click ―OK‖ to complete installation. NOTE: Send your software SN to a dealer of Gree. If you do not activate the software, it can be used for a trial period of 30 days. Use the activation code the dealer sends to you to activate your...
  • Page 401 (2) Registration Software activation procedure is as follows: Choose ―Start‖ -> ―All Programs‖ -> ―Gree CAC Remote Monitoring System‖ -> ―Activate Software‖ and enter the correct activation code. 2.2.5.4 Uninstallation Software uninstallation procedure is as follows: 1.
  • Page 402 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 3. In the ―Add or Remove Programs‖ window, select ―Gree CAC Web-based Remote Monitoring and Control System‖ and click ―Delete‖ to delete the software.
  • Page 403 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 2.2.6. Software Debug This part describes how to debug the software after it is successfully installed and the client can communicate with the server (LAN-based access). For detailed software debug procedure, please refer to the Help of the software.
  • Page 404 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL b. Right click ―Local Connect‖ and choose ―Local Connect Properties‖. c. In the ―Local Connect Properties‖ window, select ―Internet (TCP/IP)‖ and click ―Properties‖. The ―Internet (TCP/IP) Properties‖ window appears. The ―IP Address (I)‖ is the IP address of the server PC. The following figure shows that the IP address of the PC is 172.16.63.245.
  • Page 405 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 2. Logging in to Gree CAC Remote Monitoring System via a browser a. Open a browser (for example, IE) on a PC and enter the IP address of the server.
  • Page 406 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL NOTE: Make sure the PC and the server PC are in the same LAN and can communicate with each other. b. Enter the IP address in the address bar and click ―To‖ to switch over to the system login page, as shown in the following figure: NOTE: If your browser is set to English, the login page will be English as well.
  • Page 407 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL If the following page appears, the client PC cannot connect to the server. Possible cause is that the client PC or the server PC does not connect to the LAN, causing both to fail to communicate. Troubleshooting procedure is as follows: (1) Check network lines of the server and client and make sure they connect to the LAN;...
  • Page 408 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL (2) Ping the IP address of the server on the client (for detailed operation, refer to the maintenance chapter). If Ping succeeds, they can normally communicate; otherwise, the software cannot be used. c. Enter the default username and password of the Administrator and click ―Login‖. If the following system homepage appears, system debug succeeds and the software can be used.
  • Page 409 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL Troubleshooting procedure is as follows: 1. Check network lines of the server and client and make sure they connect to the LAN; 2. Ping the IP address of the server on the client (for detailed operation, refer to the maintenance chapter).
  • Page 410 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL The preceding figure is the page showed for initial server access. Software visualization requires Microsoft Silverlight to support. Therefore, a Microsoft Silverlight installation wizard will be prompted. Click ―Click now to install‖ to install the plugin. After Microsoft Silverlight is installed, the page is automatically refreshed, as shown in the following page:...
  • Page 411 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL...
  • Page 412 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 2.2.7. Troubleshooting 2.2.7.1 Hardware Faults Symptom Possible Cause Troubleshooting Communication lines of units are not twisted pairs (except for lines Replace the communication connecting BACnet gateways and PCs, lines with twisted pairs. other communication lines must be twisted pairs).
  • Page 413 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 2.2.7.2 Software Faults Software Abnormalities 1. Though the username and password entered are correct, the system prompts ―Please contact the administrator‖, as shown in the following figure: Possible cause: The database for the Remote Monitoring System on the server is not enabled. Solution: (1) Check whether the database for the Remote Monitoring System in the server is enabled.
  • Page 414 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 2. During self-check, ―BAS system service has been stopped‖ is prompted, as shown in the following figure: Possible cause: Communication between the server and gateway fails. Solution: (1) Check whether a hardware fault exists. Check gateway running. For details, refer to section 7.1 ―Hardware Faults‖.
  • Page 415 ―Open‖. ②In the displayed ―BAS Manager‖ window, click ―Start‖ to enable BAS Manager. Method b Choose ―Start‖ -> ―All Programs‖ -> ―Gree CAC Remote Monitoring System‖-> ―Service Manager‖. In the displayed ―BAS Manager‖ window, click ―Start‖ to enable BAS Manager.
  • Page 416 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 3. During remote monitoring, services are stopped abnormally. The BAS Manager icon in the status bar at the lower right corner on the desktop becomes red. Possible cause: Communication between the server and gateway fails. Solution: (1) Check whether a hardware fault exists.
  • Page 417 SERVICE MANUAL ②In the displayed ―BAS Manager‖ window, click ―Start‖ to enable BAS Manager. Method b Choose ―Start‖ -> ―All Programs‖ -> ―Gree CAC Remote Monitoring System‖-> ―Service Manager‖. In the displayed ―BAS Manager‖ window, click ―Start‖ to enable BAS Manager.
  • Page 418 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL 4. After the server IP address is entered through IE on the client, "Internet Explorer cannot display the webpage" is prompted, as shown in the following figure:...
  • Page 419 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL Possible causes: The server is not started. Network line of the server or the client is not properly connected. Server or client network is faulty, causing server access to fail. The IIS manager in the server abnormally disables the website. Solution: (1) Check whether the server is started.
  • Page 420 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL ③If the following timeout information is displayed, network fails. Check network information. (5) If network is available but the client still cannot access the server website, you need to open the IIS manager. ①Choose ―Start‖...
  • Page 421 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL ②In the displayed ―IIS Manager‖ window, open the navigation tree in the left, choose ―Website‖ -> ―Default website‖, and right click it to choose ―Start‖ to enable the website. 5. No unit information is found after self detection. Possible causes: BAS Service is abnormally disabled.
  • Page 422 ―Open‖. ②In the displayed ―BAS Manager‖ window, click ―Start‖ to enable BAS Manager. Method b Choose ―Start‖ -> ―All Programs‖ -> ―Gree CAC Remote Monitoring System‖-> ―Service Manager‖. In the displayed ―BAS Manager‖ window, click ―Start‖ to enable BAS Manager.
  • Page 423 GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL (2) Ping the BACnet gateway on the server. If the server is successfully pinged through, communication between the gateway and units may fail. Refer to section 7.1 ―Hardware Faults‖ to address the problem.
  • Page 424 JF00302443...

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