Gree GMV5 Series Service Manual
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Gree GMV5 Series Service Manual

Hr dc inverter vrf units
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Table of Contents

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See also: Service Manual , Owner's Manual
GMV5 HR DC INVERTER VRF UNITS
(GC201710-I)
Capacity: 22.4kW~180.0kW
Rated Frequency: 50Hz & 60Hz
Operation Range: Cooling: -5~52℃
Heating: -20~24℃

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Summary of Contents for Gree GMV5 Series

  • Page 1 GMV5 HR DC INVERTER VRF UNITS (GC201710-I) Capacity: 22.4kW~180.0kW Rated Frequency: 50Hz & 60Hz Operation Range: Cooling: -5~52℃ Heating: -20~24℃...

  • Page 2: Table Of Contents

    Contents PREFACE ..................................... 1 CHAPTER 1 INTRODUCTION TO BASIC FEATURES OF UNITS ..................2 ..............................2 ASIC PERATING RINCIPLE ..........................3 NTERNAL IPING ESIGN OF THE NITS ..............................7 ASIC ARAMETERS OF ..............................16 LECTRICAL ARAMETERS ........................20 ASIC EQUIREMENT FOR ONNECTION .........................

  • Page 3: Table Of Contents

    ............................ 92 RECAUTIONS FOR ONSTRUCTION ......................... 92 RECAUTIONS FOR THE SE OF EFRIGERANTS PART 2 INTRODUCTION TO UNIT FUNCTIONS ........................ 92 ............................92 UNCTION ETTINGS OF .......................... 98 YSTEM UNCTION UTTON PERATIONS PART 3 COMMISSIONING PROCESS ..........................114 VRF E ......................

  • Page 4: Preface

    GMV5 HR INVERTER VRF UNITS 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: P Rinciple

    GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL Chapter 1 Introduction to Basic Features of Units 1 Basic Operating Principle Outdoor unit of VRF unit can be connected through module combination in parallel, and indoor unit can also be connected by multiple units in parallel. The operating principle: Under different modes, the pipes of heat recovery VRF unit won’t change according to the change of mode exchanger.
  • Page 6 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 2 Internal Piping Design of the Units 2.1 Piping Diagram of GMV-Q224WM/E-X and GMV-Q280WM/E-X...
  • Page 7 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 2.2 Piping Diagram of GMV-Q335WM/E-X...
  • Page 8 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 2.3 Piping Diagram of GMV-Q400WM/E-X and GMV-Q450WM/E-X 2.4 Names and Main Functions of Components Name Main Function Adjusts its own rotational speed based on the actual Compressor requirement of the system to implement capacity control.
  • Page 9 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL Detects the high pressure value in the system in real time High-pressure sensor mode for compressor protection and other control functions. Detects system low pressure to avoid extra-low operating Low-pressure sensor pressure.
  • Page 10 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 3 Basic Parameters of Unit 3.1 Basic Parameters of ODU GMV-Q224W GMV-Q280WM/ GMV-Q335W GMV-Q400W GMV-Q450W － Model M/E-X M/E-X M/E-X M/E-X Cooling capacity 22.40 28.00 33.50 40.00 45.00 Heating capacity 25.00 31.50 37.50...
  • Page 11 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL GMV-Q504WM/ GMV-Q560WM/ GMV-Q615WM/ GMV-Q680WM/ GMV-Q730WM/ － Model GMV-Q224WM/ GMV-Q280WM/ GMV-Q280WM/ GMV-Q280WM/ GMV-Q280WM/ Combined module +GMV-Q280W +GMV-Q280W +GMV-Q335W +GMV-Q400W +GMV-Q450W M/E-X M/E-X M/E-X M/E-X M/E-X Cooling 50.40 56.00 61.50 68.00 73.00 capacity Heating capacity 56.50...
  • Page 12 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL GMV-Q785WM GMV-Q850WM GMV-Q900WM GMV-Q960WM/ GMV-Q1010W － Model /E-X /E-X /E-X M/E-X GMV-Q280WM/ GMV-Q280WM/ GMV-Q335WM GMV-Q400WM GMV-Q450WM /E-X /E-X /E-X +GMV-Q280W +GMV-Q280W Combined module +GMV-Q450W +GMV-Q450W +GMV-Q450W M/E-X M/E-X M/E-X M/E-X M/E-X +GMV-Q400W...
  • Page 13 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL GMV-Q1065W GMV-Q1130W GMV-Q1180W GMV-Q1235W GMV-Q1300W － Model M/E-X M/E-X M/E-X M/E-X M/E-X GMV-Q280WM/ GMV-Q280WM/ GMV-Q280WM/ GMV-Q335WM/ GMV-Q400WM/ +GMV-Q335W +GMV-Q400W +GMV-Q450W +GMV-Q450W +GMV-Q450W Combined module M/E-X M/E-X M/E-X M/E-X M/E-X +GMV-Q450W +GMV-Q450W +GMV-Q450W...
  • Page 14 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL GMV-Q1350W GMV-Q1410WM GMV-1460WM/ GMV-1515WM/ GMV-1580WM － Model M/E-X /E-X / E-X GMV-Q280WM/ GMV-Q280WM/ GMV-Q280WM/ GMV-Q280W GMV-Q450W M/ E-X M/E-X +GMV-Q280WM +GMV-Q280WM +GMV-Q335WM +GMV-Q400W +GMV-Q450W / E-X / E-X / E-X M/ E-X...
  • Page 15 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL － Model GMV-Q1630WM/E-X GMV-Q1685WM/E-X GMV-Q1750WM/E-X GMV-Q1800WM/E-X GMV-Q280WM/E-X GMV-Q335WM/E-X GMV-Q400WM/E-X GMV-Q450WM/E-X Combined +GMV-Q450WM/E-X +GMV-Q450WM/E-X +GMV-Q450WM/E-X +GMV-Q450WM/ E-X module +GMV-Q450WM/E-X +GMV-Q450WM/E-X +GMV-Q450WM/E-X +GMV-Q450WM/ E-X +GMV-Q450WM/E-X +GMV-Q450WM/E-X +GMV-Q450WM/E-X +GMV-Q450WM/ E-X Cooling 163.00 168.50 175.00 180.00...
  • Page 16 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 3.2 Basic Parameters for Mode exchanger The exchanger of heat recovery heat recovery mode is used for connecting outdoor unit and indoor unit, and providing high pressure, low pressure and medium pressure refrigerant provided by outdoor unit for cooling or heating mode and complete the refrigerant system circulation for the purpose of adjusting indoor temperature.
  • Page 17 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL One-to-two Mode Exchanger NCHS2C One-to-four mode exchanger NCHS4C One-to-eight mode exchanger NCHS8C...
  • Page 18 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL Model NCHS1C NCHS2C NCHS4C NCHS8C — Series Name GMV Heat Recovery Cooling and Heating Mode Exchanger Power Supply 220-240V ~ 50Hz/60Hz Rated Power Input 0.008 0.028 0.044 0.08 Maximum drive IDU NO.
  • Page 19 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 4 Electrical Parameters 4.1 Power Cable Wire Gauge and Circuit Breaker Selection Air switch Wire size of Wire size of Air switch Capacity for Mode Basic Mode power supply combined units Capacity (A) Combined units (mm²...
  • Page 20 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL Air switch Wire size of Wire size of Air switch Capacity for Mode Basic Mode power supply combined units Capacity (A) Combined units (mm² ) (mm² ) GMV-Q280WM/E-X + GMV-Q400WM/E-X 4.0 + 6.0 + 6.0 + 4.0×5 + 6.0×5 +...

  • Page 21: Circuit Diagram

    GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 4.2 Circuit Diagram 4.2.1 Circuit Diagram of ODU 4.2.1.1 Circuit diagram of GMV-Q224WM/E-X and GMV-Q280WM/E-X 4.2.1.2 Circuit diagram of GMV-Q335WM/E-X...
  • Page 22 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 4.2.1.3 Circuit diagram of GMV-Q400WM/E-X and GMV-Q450WM/E-X NOTE: This drawing is just for reference; please always refer to the electric wiring stuck to the unit for actual wiring.
  • Page 23 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 5 Basic Requirement for Pipe Connection 5.1 Outdoor units adopt the modular combination design of individual cooling system, that is, units are connected by using pipes in parallel during installation. The tubing system used among modules includes liquid pipes，high pressure gas pipe and low pressure gas pipe.
  • Page 24 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL Module1 Module2 Module3 Module4 Low pressure gas Pipe Liquid Pipe High pressure gas Pipe 5.2 Each ODU system can be connected to multiple IDUs. Detailed information about the number of units to be connected and capacity...
  • Page 25 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 6 Precautions on Refrigerant Leakage （1）Personnel related to air conditioning engineering design and installation operators must abide by the safety requirement for preventing refrigerant leakage specified in local laws and regulations. （2）Heat Recovery DC Inverter VRF units adopt the R410A refrigerant, which is nonflammable and nontoxic.

  • Page 26: Chapter 2 Installation

    GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL Chapter 2 Installation Part 1 Engineering Installation Preparation 1 Unit Operating Temperature Mode Outdoor temperature Cooling -5° C~52° C Heating -20° C~24° C -10℃～20℃ Heat recovery operation When the indoor units are all VRF fresh air indoor units, the unit operating temperature is as...
  • Page 27 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL Installation Problem Possible Consequence lubricating oil. The loss in pipe is considerable and the unit energy efficiency decreases, which are 7 Refrigerant pipe exceeds the limit. harmful for long-term running of the system.
  • Page 28 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 1.3 Cooperation between Different Professions A quality installation of air conditioning engineering depends on careful organization and close cooperation between different professions such as architecture, structure, electric, water supply and drainage, fire-fighting, and decoration. Pipes must be laid in places away from any automatic spray head for fire-fighting, and must be reasonably arranged to ensure that the pipes fit the electric, luminaries, and decoration.
  • Page 29 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL...
  • Page 30 GREE GMV5 HR INVERTER VRF UNITS 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.
  • Page 31 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 1.5 Construction Organization Process...

  • Page 32: M Aterials

    GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL Part 2 Material Selection 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 33 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL All relevant certificates and quality test reports are provided. Requirements for specifications and wall thickness Water supplying UPVC pipe: Φ32mm×2mm, Φ40mm×2mm, Φ50mm×2.5mm; HDG steel pipe: Φ25mm×3.25mm, Φ32mm×3.25mm, Φ40mm×3.5mm, Φ50mm×3.5mm. 2.3 Insulation material Rubber foam insulation material;...
  • Page 34 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL Selection of communication wire between indoor unit and wired controller Total length of communication wire Wire diameter Type of wire between indoor unit Material standard Remarks and wired controller: L(m) 1. Total length of communication wire cannot exceed 250m.

  • Page 35: I Nstalling Odu

    GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL Part 3 Installation Space Requirement 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 36 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 3 Installation Space Requirement for ODU 3.1 If all sides of the ODU (including the top) are surrounded by walls, process according to the following requirements for installation space: Installation space requirement for single-module unit...
  • Page 37 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL Installation space requirements for triple-module unit unit:mm Installation space requirement for quad-module unit unit:mm...
  • Page 38 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 3.2 In principle, if a crown wall (obstacles for keeping out the wind) exists over the machine, a distance of at least 3000 mm should be left between the top of the machine and the crown wall. If the front, rear, left and right sides of the machine are open spaces, the distance between the top of the machine and the crown wall should be at least 1500 mm, as shown in Fig.
  • Page 39 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL Anti-monsoon installation requirements for unit connecting exhaust duct: 3.4 Snow must be considered during ODU installation. 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 40 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL the steel-plate ventilating duct. The joint part must be tightly sealed with tin foil to avoid air leakage. Preparations for connecting an ODU to static pressure ventilating duct (1) The ODU is installed properly based on the unit installation requirement.
  • Page 41 GREE GMV5 HR INVERTER VRF UNITS 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 42 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL Step 1 Step 2 Step 3 Step 4 3.6 When the effective area of air intake is less than 70% of the total air intake area of all ODUs, an induced draft fan is also required. The total air input of induced draft fan should be no less than 80% of...

  • Page 43: M Ode Exchangers

    GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 4 Installation Space Requirement for Mode exchangers 4.1 Dimension of Outdoor Unit and Mounting Hole Position Unit outline dimension：  NCHS1C outline and installation dimension  NCHS2C outline and installation dimension ...
  • Page 44 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL  NCHS8C outline and installation dimension After the unit is installed, a service port should be reserved at the electric box side of unit for maintenance. The position of service port should be lower than the lower size of unit.
  • Page 45 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL Due to the structure of installation space, the mode exchangers need a service port. Please reserve another service port for mode exchangers.
  • Page 46 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 4.2 Hole-drilling for Bolt and Bolt Installation （1）Stick the installation template at the installation position flatly, drill 4 holes at the installation position basing on the installation template. As shown in Fig. a. Please refer to the diameter of expansion bolt for the diameter of hole with depth of 60-70mm.
  • Page 47 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 4.3 Install the mode exchanger temporarily Assemble suspension bolt on the expansion bolt, attach the hanger bracket to the suspension bolt. Be sure to fix it securely by using a nut and washer from upper and lower sides of the hanger bracket. The washer fixing plate will prevent the washer from falling.

  • Page 48: Installation Site

    GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL (4). The mode exchanger and its upstream branch pipe must be installed on the same horizontal plane (See schematics below). 4.5 Installation Site （1）Make sure the hanging parts can hold the weight of unit.
  • Page 49 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL NOTES! ① The installation of the unit must compyu with national and local safety regulations. ② Users can’t install the unit by theirselves, because the installation quality will affect the operation directionly. After purchasing the unit, please contact with dealer. The unit must be installed and debugged by professional installer.
  • Page 50 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL NOTES! During welding, wrap up the pipe with wet cloth (as shown in the above fig.). (2) Installation instruction for silencer while the left side of converter is connected to outdoor unit;...
  • Page 51 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL NOTES! During welding, wrap up the pipe with wet cloth (as shown in the above fig.).

  • Page 52: Part 4 Requirements On Foundation Installation

    GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL Part 4 Requirements on Foundation Installation 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.
  • Page 53 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL...

  • Page 54: Part 5 Piping Connection

    GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL Part 5 Piping Connection 1 Schematic Diagram of Piping Connection 2 Schematic Diagram of Piping Sequence GMV-Q224WM/E-X and GMV-Q280WM/E-X GMV-Q335WM/E-X , GMV-Q400WM/E-X and GMV-Q450WM/E-X...
  • Page 55 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 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...
  • Page 56 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL L11: Distance from the first branch to the nearest indoor unit; Equivalent length of one Y-type manifold pipe is 0.5m. Equivalent length of mode exchanger depends on the using situation, for example, when using one branch, the length is 1m, when using N branches, the length is N meters.

  • Page 57: M Odules

    GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL Φ38.1 Φ22.2 Φ31.8 GMV-Q730WM/E-X Φ38.1 Φ22.2 Φ31.8 GMV-Q785WM/E-X Φ38.1 Φ22.2 Φ31.8 GMV-Q850WM/E-X Φ38.1 Φ22.2 Φ31.8 GMV-Q900WM/E-X Φ38.1 Φ22.2 Φ31.8 GMV-Q960WM/E-X Φ41.3 Φ22.2 Φ34.9 GMV-Q1010WM/E-X Φ41.3 Φ22.2 Φ34.9 GMV-Q1065WM/E-X Φ41.3 Φ22.2 Φ34.9 GMV-Q1130WM/E-X Φ41.3...
  • Page 58 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL Notes: When the distance between outdoor units exceeds 2m, U-type oil trap should be added at low-pressure gas pipe. a+c≤10m, b+c≤10m, d≤10m. Pipe connection among ODUs must meet the following requirements:...
  • Page 59 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 5 Size requirement for branch pipe and piping (main pipe) 1. Connection sketch map of single-module system Connection sketch map of multi-module system...
  • Page 60 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 2. Select appropriate pipe between outdoor unit and the first indoor branch (“L”) as per the pipe size of outdoor unit. Pipe size of basic outdoor module is shown as follows: between outdoor unit and the first indoor branch...
  • Page 61 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 4. Size of connection pipe ”M4” between branches of each basic module Size of connection pipe between branches of each basic module is determined by the total rated capacity of upstream modules.
  • Page 62 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL Ф38.1 Ф19.05 Φ31.8 GMV-Q1180WM/E-X Ф38.1 Ф19.05 Φ31.8 GMV-Q1235WM/E-X Ф38.1 Ф19.05 Φ31.8 GMV-Q1300WM/E-X Ф38.1 Ф19.05 Φ31.8 GMV-Q1350WM/E-X Ф41.3 Ф19.05 Φ38.1 GMV-Q1410WM/E-X Ф41.3 Ф19.05 Φ38.1 GMV-Q1460WM/E-X Ф41.3 Ф19.05 Φ38.1 GMV-Q1515WM/E-X Ф41.3 Ф19.05 Φ38.1 GMV-Q1580WM/E-X Ф41.3...
  • Page 63 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 8. Piping size among downstream branches of heat pump mode exchanger ”a、h” Piping size among downstream branches of mode exchanger Total rated capacity of downstream indoor units: X (kW) Gas pipe (mm) Liquid pipe (mm) Φ9.52...
  • Page 64 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 6 Connecting method for indoor unit with capacity of over 14.2kW When connecting to the indoor unit with capacity of over 14.2kW, it is not allowed to connect with only one branch; it must use two branches controlled by the same mainboard for parallel connection.
  • Page 65 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL Part 6 Pipe Installation and Insulation 1 Pipe Installation for the Cooling System 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 66 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL After cutting the pipes, use a slicker to grater bur the pipes with the pipe opening inclining downward so that the copper scales do not fall into the pipe. Allowable deviation: Skewness of the cross section cannot exceed 1% of the copper pipe caliber.
  • Page 67 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL End faces of the copper pipe are smooth. Burrs and turnups inside the pipe opening must be cleared. Install flaring nuts in the pipe before pipe flaring. The flared opening must be concentric with the main pipe. No eccentricity is allowed.
  • Page 68 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL Use minimum number of braze welding junctions and elbows. Alignment and insulation after installation cannot affect the pipe location and elevation. There shall not be flat bending or corrugation on the pipe after piping.
  • Page 69 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL welding. The insertion depth cannot be smaller than that required by socket welding. 1.3.4.4 Flange Connection The pipes with large caliber and the devices are always connected by using a flange, which must be clean and intact.
  • Page 70 Then insert the copper pipe to proper depth. A concave bag for positioning is available to the manifold purchased from Gree. H. Because the manifold structure is complex, perform with care to ensure tight insulation.
  • Page 71 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL Perform an air-tightness test and a vacuum test to the entire refrigerant pipe system after the construction is finished. There must be a secure distance between pipes. Pipes in different types must be fixed separately.
  • Page 72 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL mode for 24 hours: (1) Power off all units. (2) Turn off the two stop valves of the liquid pipe. (3) Remove the drier filter. (4) Short connect with a copper pipe with the same caliber and vacuumize the pipe. (5) Turn on the...

  • Page 73: Part 7 Electric And Controller Installation

    GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL Part 7 Electric and Controller Installation 1 Precautions Both the power cable and communication cable must be connected properly. If the power cable is connected to the communication port, the main board will be burnt.
  • Page 74 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 20 cm. Otherwise, the communication of the unit will be affection. 2.2 Requirements on Power Cable Configuration Configure a circuit breaker to each unit for short circuit and overload protection. In addition, configure a general circuit breaker to both the indoor and ODUs to switch on or switch off the general power of the IDU or ODU.
  • Page 75 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL Note: The maximum number of connected IDUs (n) is determined based on the capacity of the ODU. For details, see the description on unit capacity configuration.
  • Page 76 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 2) External Connection for Modularly Connected Units Note: The maximum number of connected ODUs (N) and that of connected IDUs (n) are determined based on the combination form of ODUs. For details, see the description on unit capacity configuration.
  • Page 77 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL Fasten and fix the power cable with ties (support heads). Lay the power cable and communication cable for the ODU according to the marker of external connection circuit diagram. 3 Installation of the Communication System The CAN communication network is adopted for GMV5 VRF system.
  • Page 78 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 3.1 Connection of Communication Cable Terminals All connections for communication of GMV5 are fastened by screws. 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...
  • Page 79 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL...
  • Page 80 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL Communication cable connection for IDUs and ODUs...
  • Page 81 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 3.3 Connection Methods and Procedure of Communication System 3.3.1 Connection of communication between indoor and outdoor units Communication between indoor and outdoor units is connected via terminal D1/D2 on the terminal block XT2. Connection method for single-module and multi-module systems is shown below:...
  • Page 82 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL Connection of communication for multi-module system and multi-module exchangers system...
  • Page 83 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL Communication cable connection for the multi-module system Note: ① For modular outdoor units, if there are multiple outdoor modules, the master unit must be the first outdoor module on the communication wire and cannot be connected to indoor units. (The master unit is set by SA8 on the main board of outdoor unit.)
  • Page 84 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL ⑦ If there’re multiple indoor units at one branch of heat pump mode exchanger , the communication wires of indoor units should adopt series connection. Please note that operation mode for the indoor units at the same branch should be consistent under any circumstances.
  • Page 85 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL Two wired controllers controlling multiple IDUs When two wired controllers control multiple IDUs, the wired controllers can be connected to any IDU which is in the same series. Set of the two wired controller to the secondary wired controller. The number of IDUs controlled by the wired controller cannot exceed 16.
  • Page 86 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL SET CHECK AUTO TURBO ON OFF DAY HOUR FRESH SAVE CLEAN X-FAN DEFROST SHIELD GROUP MEMORY MASTER E-HEATER ENTER/ SLEEP MODE CANCEL TIMER FUNCTION SWING Note: ① All wired controllers are set to primary wired controllers upon delivery.
  • Page 87 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 3.3.4 Communication connection for units with central control Below is the connection of terminal G1 and G2 on terminal block XT2 of master unit of each multi VRF system. When installing long-distance monitor or centralized controller, indoor unit project code offset operatio n is required.

  • Page 88: Part 8: Vacuumization And Desiccation For The Refrigerant System

    GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL Part 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. 1 Air-tightness Test 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 89 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 1.4. Note: Before performing the air-tightness test, do not conduct insulation or wrapping at the welding joints. 2 Vacuumization and Desiccation for the System 1. Requirements on the Vacuum Pump The vacuum pump for different refrigerant systems cannot be the same.
  • Page 90 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL Fig. 2-1 Fig. 2-2 b. Turn off the valve before powering off the vacuum pump. c. Keep vacuuming for 2 hours. The vacuum meets the requirement if the pressure displayed by the vacuum gauge does not increase.

  • Page 91: Part 9: Refrigerant Perfusion

    GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL Part 9: Refrigerant Perfusion 1 Calculation Method for Perfusing Refrigerant Quantity of refrigerant perfused for the pipe (R) = Quantity of refrigerant perfused for the pipe (A) + ∑ Quantity of refrigerant perfused for each module (B) 1.
  • Page 92 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL Total refrigerant charging amount R=20+5.5=25.5kg. Example 2: Outdoor unit is a 45kW module and the indoor unit is a 45kW fresh air unit. The quantity (B) of refrigerant added to this module is 0kg.
  • Page 93 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 2 Method for Perfusing Refrigerant Refrigerant perfusion for the VRF system is classified into pre-perfusion and perfusion during running. 2.1. Refrigerant Pre-perfusion Step 1: Connect the high pressure gauge pipe to the detection opening of the liquid pipe, and the medium gauge pipe to the vacuum pump.
  • Page 94 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL If the pre-perfusion quantity (m) reaches the required total quantity for the system, turn off the valve of the refrigerant tank immediately to finish perfusing and proceed with step 11. Step 11: Remove the pressure gauge.

  • Page 95: Part 1 Security Requirements

    GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL Chapter 3 Commissioning Operation Part 1 Security Requirements 1 Precautions for Construction 1. All commissioning and maintenance personnel must learn and strictly comply with construction security specifications. Security measures must be taken especially for outdoor operations.
  • Page 96 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL Factory DIP Switch Name Meaning Remark Settings Defines the rated capacity Defined based The factory settings cannot be SA1_capacity Capacity DIP switch of the unit. on the model. changed. The address DIP switch is used...
  • Page 97 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL Address DIP1 DIP2 DIP3 DIP4 DIP5 × × × × × × × × × × × × × × × On the DIP switch, “ON” indicates “0” status and the opposite direction indicates "1” status. “...
  • Page 98 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL Precautions: A. When the DIP switch setting is not covered in the above scope, a DIP switch setting exception fault may occur. B. Only one compressor can be set to emergency mode on a module.
  • Page 99 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL emergency operation of the system. 1) Fan positions 2) When it is required to set the fan to emergency mode, set the DIP switch as follows: Fan Emergency Operation DIP Switch (SA5_FAN-E)
  • Page 100 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL Master unit Sub-module Upon factory departure, all modules are in “00” master unit status by default. When multiple modules are connected in parallel, only one module retains the master unit status and other modules are set to sub-module status.
  • Page 101 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 2 System Function Button Operations 2.1 Introduction to Function Buttons The main board AP1 of the ODU consists of eight function buttons: Function Button Name and Meaning Button Code Function Meaning Indicates the upward selection button.
  • Page 102 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 2.2 Introduction to Functions 2.2.1 List of functions Factory Settings Remark Function Function Name Function Meaning Code Code Meaning Fully or partially recovers refrigerants in a faulty module Refrigerant or IDU pipeline according to It can only ——...
  • Page 103 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL The refrigerant recovery volume of each basic module is as follows: Model of Basic Maximum Refrigerant Recovery Volume Module (kg) GMV-Q224WM/E-X GMV-Q280WM/E-X GMV-Q335WM/E-X GMV-Q400WM/E-X 13.5 GMV-Q450WM/E-X This function falls into two modes: faulty module refrigerant recovery and IDU pipeline refrigerant recovery.
  • Page 104 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL Mode 6 Mode 7 Low- and medium-noise Mode 8 mode Mode 9 superlow-noise mode Note: The highest daytime temperature is generally in 13:00-15:00. For the forcible silent mode, the system runs in low-noise mode no matter in the daytime or nighttime. The...
  • Page 105 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 2.2.3 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,...
  • Page 106 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL Blinking Blinking Blinking Blinking Blinking Blinking Blinking Blinking Blinking Blinking Blinking Blinking Blinking Blinking Blinking Blinking Blinking Blinking Blinking Blinking Blinking Blinking Step 3: Press "SW7" to confirm selecting the mode. The master unit is displayed as follows:...
  • Page 107 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL Blinking Blinking Step 3: Press "SW7" to confirm selecting the mode. The master unit is displayed as follows: LED1 LED2 LED3 Function Code Display Mode ODU Function Mode Code Display Mode ODU Function Mode Code Display Mode On the master unit, press "SW6"...
  • Page 108 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL Step 4: When the high-pressure value displayed on LED3 continually blinks (displayed as 0C if the high pressure is less than 0C), quickly close the air-tube stop valve of the emergency module and then press "SW7"...
  • Page 109 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL Step 1: Confirm entering the n3 forcible defrosting operation settings. The master unit is displayed as follows: LED1 LED2 LED3 Function Code Display Mode Current Progress/Mode Display Mode Current Status Display Mode...
  • Page 110 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 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)" or "SW2 (DOWN)" on the master unit. By default, the A7 outdoor silent mode is displayed for query.
  • Page 111 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL Code Code Current detection circuit failure of inverter High-pressure protection compressor driver Low-pressure protection Inverter compressor out-of-step protection Communication failure between the master Lack of refrigerant protection unit and inverter compressor driver...
  • Page 112 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL Function Code Display Mode Module Address Display Mode Current Status Display Mode Blinking Blinking Blinking Blinking Blinking Blinking Blinking Blinking Select a module for parameter query by pressing "SW1 (UP)" or "SW2 (DOWN)" and then press "SW7".
  • Page 113 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL This parameter is invalid for the GMV5 HR Current value of compressor 6 series. Reserved Module temperature of compressor 1 ° C Module temperature of compressor 2 ° C Module temperature of outdoor fan 1 °...
  • Page 114 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL Blinking Blinking Blinking Blinking Select a module for query by pressing "SW1 (▲)" or "SW2 (▼)" and then press "SW7". The display is as follows: LED1 LED2 LED3 Function Code Display Mode...
  • Page 115 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL Parameter Code Display Mode Parameter Code Display Mode Parameter Code Display Mode Blinking Blinking ↓ LED1 LED2 LED3 Parameter Code Display Mode Parameter Code Display Mode Parameter Code Display Mode ↓ LED1...
  • Page 116 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 2.4.2 Restoring Factory Settings Restoring Factory Prompt for Setting Method Remark Settings Successful Settings Press and hold "SW8" All factory settings of the ODU are Restoring setting All LEDs blink for on the master unit for...

  • Page 117: Part 3 Commissioning Process

    Only a qualified unit can be delivered for use. 2 Required Files and Tools for Engineering Commissioning 2.1 Required Tools for Engineering Commissioning of GREE VRF Inner hexagon spanner Digital thermometer Shifting spanner...
  • Page 118 Make sure that the following tools or instruments are prepared before commissioning. Make sure that the commissioning software is correct before commissioning. The professional aftersales commissioning software provided by GREE should be used for commissioning of GREE VRF system. Make sure that all required files and parameter records are prepared.
  • Page 119 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL value is 27° C. The difference between the outdoor environment temperature and either pressure value is less than 5° C. It indicates that the system standby pressure is normal. 3.2.4 Electrical System Check Check for high electromagnetic interference, dusts, and acidic or alkaline gas in the unit environment.
  • Page 120 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 380 V. If the measurement result does not match the above-mentioned normal value, check whether the external power cable is inversely connected between the N wire and one of L wires. b2. Observe the code displayed on the digital LED of the main board AP1. If the fault code “U3” is displayed, it indicates that the phase sequence of the external power cable connected with the air conditioning unit is incorrect.
  • Page 121 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 3.2.8 Spot Check Spot Check for Commissioning Spot Check Item Qualified Is the engineering design diagram complete? Does the construction comply with the design diagram? Is the rated capacity of the IDU/ODU of a single refrigerating system within 50%-135%?
  • Page 122 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 2) When unit commissioning is started, the system automatically selects an operation mode according to the environment temperature: Cooling mode when the outdoor environment temperature is higher than 20° C. Heating mode when the outdoor environment temperature is lower than 20° C.
  • Page 123 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL assignment There is not any master IDU, and a master IDU should be set through the Blinking commissioning software. If no master IDU is set within one minute, the system will automatically set one.
  • Page 124 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL than eight hours. The system detects that the compressor preheating period is more than eight hours and automatically enters the next step. The system detects insufficient refrigerants and stops to balance the 09_Pre-startu pressure lower than 0.3...
  • Page 125 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL manual commissioning operation perfusion (the system automatically selects the commissioning operation mode without needing manual settings). A fault occurs on the Corresponding heating-mode fault code commissioning operation. A fault occurs on other...
  • Page 126 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL Step 2: In power-off status of ODU, set the ODU to a corresponding static pressure mode according to static pressure design requirements for outdoor engineering. For details about the setting method, see the "Outdoor Fan Static Pressure Setting DIP Switch (SA6_ESP_S)"...
  • Page 127 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL enters the next step. According to the above fault symptoms, set the master unit again by referring to the setting method in the "Master Unit Setting DIP Switch (SA8_MASTER-S)" section. Then enter unit commissioning again.
  • Page 128 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL If an exception is detected, the unit retains the current status and waits for manual troubleshooting. Corresponding faults include: Commissioning Code Progress Code Status Code LED1 LED2 LED3 Meaning Progress Display Display...
  • Page 129 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL next commissioning step. Commissioning Code Progress Code Status Code LED1 LED2 LED3 Meaning Progress Code Display Status Code Display Status Code Display Status The system detects that no IDU component 07_Component detection for IDU...
  • Page 130 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL less than eight hours. Step 14: Unit commissioning step 09 is pre-startup refrigerant confirmation. If the refrigerant volume meets the system startup requirements, the main board is displayed as follows and the unit automatically enters the next commissioning step.
  • Page 131 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL Commissioning Code Progress Code Status Code Meanin LED1 LED2 LED3 Progress Display Display Display Status Status Status Outdoor unit valves 10_Pre-startup ODU valve status have detection been properly opened. Step 16: Unit commissioning step 11 is manually calculated refrigerant perfusion status.
  • Page 132 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL A fault occurs on the Correspondi cooling-mod ng fault code commissioni ng operation. A fault occurs on other modules during the cooling-mod commissioni ng operation. A fault occurs on ODU pipes. The system...
  • Page 133 Step 21: Deliver the unit for use and let users know the precautions. 3.3.3.2.2 Commissioning Through the Commissioning Software Step1: 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"...
  • Page 134 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL section). Step 2: Completely cover the front panel of ODU. Step 3: In power-off status of ODU, set the ODU to a corresponding static pressure mode according to static pressure design requirements for outdoor engineering. For details about the setting method, see the "Outdoor Fan Static Pressure Setting DIP Switch (SA6_ESP_S)"...
  • Page 135 GREE GMV5 HR INVERTER VRF UNITS 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.
  • Page 136 GREE GMV5 HR INVERTER VRF UNITS 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 137 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL Click " " to display relevant information detected on this phase, which provides references for troubleshooting. Click "Close" to close the information. During commissioning, click "Stop" to stop commissioning and then click "Start" to continue commissioning till commissioning ends.
  • Page 138 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL Commissioning steps 11, 13, and 14 are reserved. Steps 15, 16, and 17 are parallel steps (one of the three steps will be selected according to the actual unit). At last, When “Debugging complete”, the engineering debug is finished.
  • Page 139 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL Note: During commissioning, users must listen to the operating sound of outdoor and indoor fans and compressors to check for exceptions. 3.3.3.3 Operations after Commissioning Sort and save data. Make detailed records of exceptions and troubleshooting methods during commissioning for later maintenance and query.
  • Page 140 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 4 References for Proper Unit Operation Parameters Commissioning Item Parameter Name Unit Reference Value Outdoor environment ° C —— temperature ●When the system compressor is running, the normal discharge pipe or top temperature for cooling is 70-95°...
  • Page 141 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL inverter IPM module is lower than 80° C. The compressor highest temperature is not higher than 95° C. ●The normal bus line voltage is 1.414 times larger than the power voltage. For...

  • Page 142: Part 1 Failure Code Table

    GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL Chapter 4 Maintenance Part 1 Failure Code Table 1 System Failure Code Table Inquiry method of malfunction display: combine division number and content number to check the corresponding malfunction. Indoor: Error Code...
  • Page 143 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL Outdoor: Error Code Content Error Code Content Current sensor of compressor 1 is Malfunction of ODU abnormal Current sensor of compressor 2 is High-pressure protection abnormal Current sensor of compressor 3 is...
  • Page 144 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL High-pressure sensor and low-pressure Drive PFC protection of compressor sensor are connected reversely Over-current protection of inverter Malfunction of temperature sensor of compressor oil-return 2 Malfunction of temperature sensor of oil Drive IPM module protection of compressor...
  • Page 145 GREE GMV5 HR INVERTER VRF UNITS 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...
  • Page 146 GREE GMV5 HR INVERTER VRF UNITS 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...

  • Page 147: Part 2 Exception And Troubleshooting

    GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL Part 2 Exception and Troubleshooting 1 How to locate a faulty IDU promptly Use the IDU project number enquiry and faulty IDU locating function to locate a faulty IDU or wired controller's corresponding IDU as follows when multiple IDUs are running in one place:...
  • Page 148 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 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 149 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 1) Check if the cable connecting the fan's drive board and the compressor's drive board is loose. If yes, reconnect it; 1. The communication cable is not 2) Check if the cable connecting the fan's drive board Communication connected.
  • Page 150 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL When multiple systems are controlled in a centralized way, if two or more IDUs share the same project number, the engineer number conflict occurs. In that case, IDUs cannot be switched to varied modes or be turned on or off.
  • Page 151 GREE GMV5 HR INVERTER VRF UNITS 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 152 GREE GMV5 HR INVERTER VRF UNITS 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 153 GREE GMV5 HR INVERTER VRF UNITS 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 154 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL Flicker Flicker Flicker Flicker Flicker Flicker Flicker Flicker Flicker Flicker Flicker Flicker Flicker Flicker Flicker (2) Press SW2 (▼) on the controlling unit and select n5. Short press SW7 to show the following...
  • Page 155 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL over-temperature faulty; 2. Apply thermal gel evenly on the IPM module; protection 2. Thermal gel is not applied evenly 3. Screw the IPM module properly. on the IPM module; 3. The IPM module is not screwed properly.
  • Page 156 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 1. The drive board is damaged; 1. Replace the fan drive board; Variable frequency fan 2. The fan's UVW cable is not 2. Reconnect the fan's UVW cable; starting failure connected properly;...
  • Page 157 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL with the difference. The reference 3.2 The air difference is Replace and —— —— value). pipe is large or part of solder the blocked. the pipe is pipe. frosting. Touch the pipe along the 3.3.1 The...
  • Page 158 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL expansion electronic valve is reset. to the main valve is expansion If it is set, board. opened to valve of the it is normal. 1.2.2 The 100PLS, the subcooler is Otherwise, control wire...
  • Page 159 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL Check the necessary amount of refrigerant Incorrect 4. Too discharge Other quantity of —— —— —— much reasons refrigerant refrigerant unneeded is injected. refrigerant slowly via the stop valve of the fluid pipe.
  • Page 160 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 2.2.2 Pressure exception Possible reasons Faul Primary reason Secondary reason Tertiary reason Fault Solution Confirmatio Confirmation Descriptio Confirmatio code Description Description n method method n method 1. The stop valve of the...
  • Page 161 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL Stop the whole system. Test the system's balance pressure 20 minutes later and convert the 4.1 The pressure into the Replace the high corresponding high —— —— pressure saturation pressure sensor is temperature.
  • Page 162 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 6.1.1 The power cable Reconnect connecting Manual the motor the motor check with the and main power cable. board is loose. 6.1.2 The electric 6.1 The Connect or capacity is IDU's fan is...
  • Page 163 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 1.1 The outdoor It is a normal ambient phenomeno temperatur Measure the n caused by —— —— e in the outdoor ambient cooling temperature. protection mode is function. 1. The lower than ambient -10°...
  • Page 164 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL difference. The impurities. difference is large or part of the pipe is frosting. 3.1 The outdoor It is a 3. The ambient normal Measure the ambient temperatur phenomeno outdoor —— —— ——...
  • Page 165 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 6.2.1 The fan motor is not properly Manual Reconnect connected check it properly. with the control board of the motor. 6.2.2 The fan motor is not properly connected with the Manual Reconnect control board 6.2 The...
  • Page 166 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL ; B. when Touch the the IDU is pipe along working in the flowing the heating direction of mode and refrigerant to feel the electronic 2.2 The temperatur Replace —— —— expansion...
  • Page 167 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL lower than -7° C. 4.1 The air intake and return inlet of the ODU are too close to Re-design Check the —— —— each other, the airflow distance. affecting distribution. the heat exchange 4.
  • Page 168 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 2.2.4 Exception Analyzing and Troubleshooting 2.2.4.1 “A0” Unit debug status Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: This code is status code. When the engineering debugging is not completed, the unit will display this code, at this time, the unit cannot startup for operation.
  • Page 169 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 2.2.4.5 “A6” Cooling and heating function setting status Error display: ODU mainboard will display Error judgment condition and method: This code is status code, which means the system has entered into cooling and heating function setting status.
  • Page 170 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 2.2.4.9 “AC” Cooling status Error display: ODU mainboard will display Error judgment condition and method: This code is status code, which means the system has entered into cooling mode for operation. Possible reason：——...
  • Page 171 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL Error judgment condition and method: This code is status code, which means whether it is ready for the debug procedure or not or unit status can be started. Possible reason：—— Troubleshooting: status code, no troubleshooting.
  • Page 172 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL Error judgment condition and method: Sample the AD value of temperature sensor through temperature sensor detecting circuit and judge the range of AD value; if the sampled AD value exceeds upper limit and lower limit in 30 seconds continuously, report the error.
  • Page 173 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 2.2.4.19 “b3” Defrost temperature sensor 2 error Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: Sample the AD value of temperature sensor through temperature sensor detecting circuit and judge the range of AD value;...
  • Page 174 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 2.2.4.20 “b4” Malfunction of liquid temperature sensor of sub-cooler Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: Sample the AD value of temperature sensor through temperature sensor detecting circuit and judge the range of AD value;...
  • Page 175 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 2.2.4.21 “b5” Malfunction of gas temperature sensor of sub-cooler Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: Sample the AD value of temperature sensor through temperature sensor detecting circuit and judge the range of AD value;...
  • Page 176 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 2.2.4.22 “b6” Malfunction of inlet tube temperature sensor of vapor liquid separator Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: Sample the AD value of temperature sensor through temperature sensor detecting circuit and judge the range of AD value;...
  • Page 177 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 2.2.4.23 “b7” Malfunction of exit tube temperature sensor of vapor liquid separator Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: Sample the AD value of temperature sensor through temperature sensor detecting circuit and judge the range of AD value;...
  • Page 178 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 2.2.4.24 “b8” Malfunction of outdoor humidity sensor Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: Sample the AD value of temperature sensor through temperature sensor detecting circuit and judge the range of AD value;...
  • Page 179 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 2.2.4.25 “b9” Malfunction of gas temperature sensor of heat exchanger Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: Sample the AD value of temperature sensor through temperature sensor detecting circuit and judge the range of AD value;...
  • Page 180 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 2.2.4.26 “bA” Malfunction of oil-return temperature sensor Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: Sample the AD value of temperature sensor through temperature sensor detecting circuit and judge the range of AD value;...
  • Page 181 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 2.2.4.27 “C0” IDU and ODU, IDU wired controller communication error Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: If no communication between ODU and IDU or between IDU and wired controller in continuous 30s, report the error.
  • Page 182 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 2.2.4.28“C2” main control and inverter compressor drive communication error Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: If ODU hasn’t received inverter compressor drive board data in continuous 30s, report the error.
  • Page 183 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 2.2.4.29 “C3” main control and inverter fan drive communication error Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: If ODU hasn’t received inverter fan drive board data in continuous 30s, report the error.
  • Page 184 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL...
  • Page 185 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 2.2.4.30 “C4” IDU missing error Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: If ODU hasn’t received inverter fan drive board data in continuous 30s, report the error.
  • Page 186 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL You can reset the conflict IDU project codes through the following ways: Reset project codes through debugging software; Reset project codes through wired controller; Reset project codes through debugging remote controller; Reset this mainboard through the reset button on IDU mainboard and let the system reallocate the code.
  • Page 187 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL Troubleshooting: status code, no troubleshooting. 2.2.4.34 “C9” Emergency operation status of fan. Error display: ODU mainboard will display Error judgment condition and method: If any compressor in the module is set with emergency operation status, the mainboard will display “C8” to indicate that the system has entered compressor emergency operation status during operation Possible reason：——...
  • Page 188 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL Rearrange project design to increase IDU capacity or decrease ODU capacity. 2.2.4.38 “CC” No master controlling unit error Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: Mainboard detects the DIP switch (SA8) of master controlling unit to judge if it is master controlling unit.
  • Page 189 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL network ■Detecting circuit is abnormal Troubleshooting: 2.2.4.40 “CJ” System address code conflict Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: When multiple refrigerant system is connected through CAN2 network of unit mainboard, it is allowable to have only one master system in this network.
  • Page 190 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 2.2.4.41 “CP” Multiple master wired controller error Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: There are two or more wired controllers in one HBS network are set as the master wired controller.
  • Page 191 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 2.2.4.43 “d1” Indoor circuit board error Error display: IDU wired controller and IDU receive light board will display Error judgment condition and method: Check if the reading of address chip and memory chip of IDU mainboard is normal. If the data of address chip and memory chip cannot be read, it is abnormal Possible reason：...
  • Page 192 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 2.2.4.45 “d4” Inlet pipe temperature sensor error Error display: IDU wired controller and IDU receive light board will display Error judgment condition and method: Sample the AD value of temperature sensor through temperature sensor detecting circuit and judge the range of AD value.
  • Page 193 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 2.2.4.46 “d6” Outlet pipe temperature sensor error Error display: IDU wired controller and IDU receive light board will display Error judgment condition and method: Sample the AD value of temperature sensor through temperature sensor detecting circuit and judge the range of AD value.
  • Page 194 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 2.2.4.48 “d9” Jumper cap error Error display: IDU wired controller and IDU receive light board will display Error judgment condition and method: Possible reason： If jumper cap model doesn’t match with mainboard, report the error ■Jumper cap is not installed...
  • Page 195 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 2.2.4.49 “dA” IDU network address error Error display: IDU wired controller and IDU receive light board will display Error judgment condition and method: Through testing the IDU address chip and IP address, if address chip cannot be read, IDU IP is 0 or IP is in conflict, report the error.
  • Page 196 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 2.2.4.51 “dC” Capacity DIP switch setting error Error display: IDU wired controller and IDU receive light board will display Error judgment condition and method: If capacity DIP switch is set to the wrong position, report the error.
  • Page 197 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL ■Detecting circuit is abnormal Troubleshooting: 2.2.4.53 “db” Project debugging Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: This is a status code of project debugging, not a error code. When IDU or ODU displays this code, it means the unit is under debugging status and the IDU cannot be operated.
  • Page 198 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL ■System pipeline is blocked; Troubleshooting:...
  • Page 199 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 2.2.4.55 “E2” Compressor low discharge temperature protection Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: Test the compressor discharge temperature and high pressure value. If the difference between discharge temperature and high pressure value is lower than 10℃, the unit will stop for protection.
  • Page 200 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL...
  • Page 201 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 2.2.4.56 “E3” System low pressure protection Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: Test compressor suction pressure through low pressure sensor. When pressure value is lower than -41℃, the unit will stop for protection.
  • Page 202 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 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 203 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 2.2.4.57 “E4” Compressor high discharge temperature protection Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: Test the compressor discharge temperature through compressor discharge pipe and shell top temperature sensor.
  • Page 204 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL...
  • Page 205 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 2.2.4.58 “F0” ODU mainboard error Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: Check if the reading of address chip, memory chip and clock chip of ODU mainboard is normal. If the data of address chip, memory chip and clock chip cannot be read, it is abnormal.
  • Page 206 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL Troubleshooting: 2.2.4.60 “F3” Low pressure sensor error Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: Sample the AD value of low pressure sensor through sensor detecting circuit and judge the range of AD value;...
  • Page 207 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 2.2.4.61 “F5” Compressor 1 discharge temperature sensor error Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: Sample the AD value of high pressure sensor through sensor detecting circuit and judge the range of AD value;...
  • Page 208 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 2.2.4.62 “F6” Compressor 2 discharge temperature sensor error Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: Sample the AD value of high pressure sensor through sensor detecting circuit and judge the range of AD value;...
  • Page 209 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 2.2.4.63 “F7” Compressor 3 discharge temperature sensor error Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: Sample the AD value of high pressure sensor through sensor detecting circuit and judge the range of AD value;...
  • Page 210 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 2.2.4.64 “F8” Compressor 4 discharge temperature sensor error Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: Sample the AD value of high pressure sensor through sensor detecting circuit and judge the range of AD value;...
  • Page 211 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 2.2.4.65 “F9” Compressor 5 discharge temperature sensor error Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: Sample the AD value of high pressure sensor through sensor detecting circuit and judge the range of AD value;...
  • Page 212 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 2.2.4.66 “FA” Compressor 6 discharge temperature sensor error Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: Sample the AD value of high pressure sensor through sensor detecting circuit and judge the range of AD value;...
  • Page 213 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 2.2.4.67 “FH” Compressor 1 current sensor error Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: Sample the AD value of current sensor through detecting circuit and judge the range of AD value; if the sampled AD value exceeds upper limit and lower limit in 3 seconds continuously, report the error.
  • Page 214 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 2.2.4.68 “FC” Compressor 2 current sensor error Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: Sample the AD value of current sensor through detecting circuit and judge the range of AD value; if the sampled AD value exceeds upper limit and lower limit in 3 seconds continuously, report the error.
  • Page 215 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 2.2.4.69 “FL” Compressor 3 current sensor error Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: Sample the AD value of current sensor through detecting circuit and judge the range of AD value; if the sampled AD value exceeds upper limit and lower limit in 3 seconds continuously, report the error.
  • Page 216 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL...
  • Page 217 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 2.2.4.70 “FE” Compressor 4 current sensor error Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: Sample the AD value of current sensor through detecting circuit and judge the range of AD value; if the sampled AD value exceeds upper limit and lower limit in 3 seconds continuously, report the error.
  • Page 218 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL Troubleshooting: 2.2.4.72 “FJ” Compressor 6 current sensor error Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: Sample the AD value of current sensor through detecting circuit and judge the range of AD value; if the sampled AD value exceeds upper limit and lower limit in 3 seconds continuously, report the error.
  • Page 219 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL...
  • Page 220 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 2.2.4.73 “FU” Compressor 1 shell top temperature sensor error Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: Sample the AD value of temperature sensor through temperature sensor detecting circuit and judge the range of AD value.
  • Page 221 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL ■Detecting circuit is abnormal Troubleshooting: 2.2.4.75 “H0” Fan drive board error Error display: IDU wired controller will display Error judgment condition and method: Check the error code on IDU wired controller. If IDU wired controller displays H0, you should also check the error code on nixie tube of ODU main control board.
  • Page 222 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 2.2.4.76 “H1” Fan drive board operation error Error display: IDU wired controller will display Error judgment condition and method: Check the error code on IDU wired controller. If IDU wired controller displays H1, you should also check the error code on nixie tube of ODU main control board.
  • Page 223 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL board module reset protection Possible reason： ■Fan drive board is abnormal. Troubleshooting: 2.2.4.79 “H5” Inverter fan overcurrent protection Error display: ODU mainboard will display Error judgment condition and method: Check the error code on nixie tube of ODU main control board. If H5 is displayed, it indicates inverter fan overcurrent protection Possible reason：...
  • Page 224 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 2.2.4.80 “H6” Drive IPM module protection of fan Error display: ODU mainboard will display Error judgment condition and method: Check the error code on nixie tube of ODU main control board. If H6 is displayed, it indicates Drive IPM module protection of fan Possible reason：...
  • Page 225 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 2.4.4.81 “H7” Fan drive temperature sensor error Error display: ODU mainboard will display Error judgment condition and method: Check the error code on nixie tube of ODU main control board. If H7 is displayed, it indicates fan drive IPM module protection Possible reason：...
  • Page 226 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 2.2.4.82 “H8” Fan drive IPM high temperature protection Error display: ODU mainboard will display Error judgment condition and method: Check the error code on nixie tube of ODU main control board. If H8 is displayed, it indicates fan drive IPM high temperature protection Possible reason：...
  • Page 227 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 2.2.4.83 “H9” Desynchronizing protection of inverter compressor Error display: ODU mainboard will display Error judgment condition and method: Check the error code on nixie tube of ODU main control board. If H9 is displayed, it indicates Desynchronizing protection of inverter compressor Possible reason：...
  • Page 228 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 2.2.4.84 “HC” AC input voltage of drive of inverter fan Error display: ODU mainboard will display Error judgment condition and method: Check the error code on nixie tube of ODU main control board. If HC is displayed, it indicates AC input voltage of drive of inverter fan Possible reason：...
  • Page 229 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 2.2.4.85“HH” fan drive DC bus high voltage protection Error display: ODU mainboard will display Error judgment condition and method: Check the error code on nixie tube of ODU main control board. If HH is displayed, it indicates fan drive DC bus high voltage protection Possible reason：...
  • Page 230 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL ■Power supply voltage is lower than 320V; ■Fan drive board is abnormal. Troubleshooting: 2.2.4.87 “HJ” Failure startup of inverter fan Error display: ODU mainboard will display Error judgment condition and method: Check the error code on nixie tube of ODU main control board. If HJ is displayed, it indicates Failure startup of inverter fan Possible reason：...
  • Page 231 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 2.2.4.88 “J0” Other module protection Error display: ODU mainboard will display . IDU and IDU receive light board will not display. Error judgment condition and method: In multiple modules system, if any module causes system stoppage, the modules without errors will display this error to indicate other module has error, which causes unit stoppage.
  • Page 232 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 2.2.4.89 “J1” Compressor 1 overcurrent protection Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: Check the operation current of compressor through current sensor or circuit. When current exceeds the limit, the unit will stop for protection.
  • Page 233 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 2.2.4.90 “J2” Compressor 2 overcurrent protection Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: Check the operation current of compressor through current sensor or circuit. When current exceeds the limit, the unit will stop for protection.
  • Page 234 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 2.2.4.91 “J3” Compressor 3 overcurrent protection Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: Check the operation current of compressor through current sensor or circuit. When current exceeds the limit, the unit will stop for protection.
  • Page 235 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 2.2.4.92 “J4” Compressor 4 overcurrent protection Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: Check the operation current of compressor through current sensor or circuit. When current exceeds the limit, the unit will stop for protection.
  • Page 236 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 2.2.4.93 “J5” Compressor 5 overcurrent protection Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: Check the operation current of compressor through current sensor or circuit. When current exceeds the limit, the unit will stop for protection.
  • Page 237 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 2.2.4.94 “J6” Compressor 6 overcurrent protection Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: Check the operation current of compressor through current sensor or circuit. When current exceeds the limit, the unit will stop for protection.
  • Page 238 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 2.2.4.95 “J7” Gas-mixing protection of 4-way valve Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: Check the system high pressure and low pressure through pressure sensor.
  • Page 239 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL Troubleshooting: 2.2.4.96 “J8” System high pressure ratio protection Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: Check the system high pressure and low pressure through pressure sensor. When the ratio between system high pressure and low pressure is bigger than 8 after starting operation, the unit will stop for protection.
  • Page 240 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 2.2.4.97 “J9” System low pressure ratio protection Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: Check the system high pressure and low pressure through pressure sensor. When the ratio between system high pressure and low pressure is smaller than 1.8 after starting operation, the unit will stop for...
  • Page 241 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 2.2.4.98 “L1” Indoor fan protection Error display: IDU wired controller and IDU receive light board will display Error judgment condition and method: Check if the rotation speed of IDU is too slow, or it stops rotation, or protection signal of outdoor fan is transferred.
  • Page 242 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 2.2.4.99 “L3” Water full protection Error display: IDU wired controller and IDU receive light board will display Error judgment condition and method: Check the status of IDU float switch. When water level is too high, float switch is activated, so water full...
  • Page 243 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL Possible reason： ■IDU is installed improperly ■Drainage pump is broken ■Float switch operates abnormally ■IDU mainboard is abnormal Troubleshooting:...
  • Page 244 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 2.2.4.100 “L4” Power supply overcurrent protection Error display: IDU wired controller and IDU receive light board will display Error judgment condition and method: Check if the power supply current from IDU to wired controller is normal. If power supply current is too big, it is judged that the current is abnormal.
  • Page 245 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 2.2.4.102 “L7” No master IDU Error display: IDU wired controller and IDU receive light board will display Error judgment condition and method: No master IDU error will happen when there is no master IDU in the system Possible reason：...
  • Page 246 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 2.2.4.103 “L9” Group-controlled IDU quantity inconsistency Error display: IDU wired controller and IDU receive light board will display Error judgment condition and method: If the IDU quantity connected with wired controller exceeds 16 sets or actually connected IDU quantity is inconsistent with the set group-controlled IDU quantity.
  • Page 247 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL Troubleshooting: Make sure the IDUs connected with one wired controller belong to the same series. 2.2.4.105 “LC” Mismatch of IDU and ODU models Error display: IDU wired controller and IDU receive light board will display...
  • Page 248 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL Error judgment condition and method: This code is function setting status code, which indicates that the system has entered the limit setting status of max output capacity. “10” means max output capacity is 100%; “09” means max output capacity is 90%;...
  • Page 249 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL Error judgment condition and method: This code is the inquiry status code. In this case, online IDU quantity can be inquired. Possible reason：—— Troubleshooting: status code, no troubleshooting. 2.2.4.113 “nA” Heat pump unit...
  • Page 250 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 2.2.4.117 “nF” Fan only model status Error display: ODU mainboard will display Error judgment condition and method: This code is the fan only model status code, which indicates that the system has been set to fan only unit status.
  • Page 251 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL ■Inverter compressor overcurrent protection (P5 is displayed on the nixie tube of ODU main control board) ■Compressor drive IPM module protection (P6 is displayed on the nixie tube of ODU main control board) ■Compressor drive communication error (C2 is displayed on the nixie tube of ODU main control board)
  • Page 252 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 2.2.4.122 “P5” Inverter compressor overcurrent protection Error display: ODU mainboard will display Error judgment condition and method: Check the error code on nixie tube of ODU main control board. If P5 is displayed, it indicates inverter compressor overcurrent protection Possible reason：...
  • Page 253 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 2.2.4.123 “P6” Inverter compressor IPM protection Error display: ODU mainboard will display Error judgment condition and method: Check the error code on nixie tube of ODU main control board. If P6 is displayed, it indicates inverter compressor overcurrent protection Possible reason：...
  • Page 254 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL ■Connection sequence of compressor UVW wire is wrong; ■Compressor is broken; ■System is blocked; ■Compressor drive board IPM module is broken. Troubleshooting: 2.2.4.124 “P7” Compressor drive board temperature sensor error Error display: ODU mainboard will display...
  • Page 255 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL Check the error code on nixie tube of ODU main control board. If P7 is displayed, it indicates compressor drive board temperature sensor error Possible reason： ■Compressor drive board is abnormal Troubleshooting: 2.2.4.125 “P8”...
  • Page 256 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 2.2.4.126 “P9” Compressor drive board IPM high temperature protection Error display: ODU mainboard will display Error judgment condition and method: Check the error code on nixie tube of ODU main control board. If P8 is displayed, it indicates compressor drive board IPM high temperature protection occurs Possible reason：...
  • Page 257 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 2.2.4.127 “PC” Compressor drive current detecting circuit error Error display: ODU mainboard will display Error judgment condition and method: Check the error code on nixie tube of ODU main control board. If PC is displayed, it indicates compressor drive current detecting circuit error Possible reason：...
  • Page 258 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 2.2.4.129 “PL” Compressor drive DC bus low voltage protection Error display: ODU mainboard will display Error judgment condition and method: If the mainboard detects that input power cord voltage is lower than 320V, it will report low voltage protection.
  • Page 259 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL...
  • Page 260 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 2.2.4.131 “U0” Insufficient compressor preheating time Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: If it is detected that the oil temperature preheating time of compressor before startup doesn’t reach 8 hours, it will report this error.
  • Page 261 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL Possible reason： ■The power supply connected to the unit is incorrect, phase loss or reverse happens ■Detecting circuit is abnormal Troubleshooting: 2.2.4.134 “U4” Lack of refrigerant protection Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: Check the system high pressure and low pressure through pressure sensor.
  • Page 262 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL Error judgment condition and method: During commissioning, check if ODU cut-off valve is opened through detecting system parameter by pressure sensor. If the parameter is abnormal, it will indicate that confirming the open of cut-off valve and then press SW5 to enter the next step after confirming.
  • Page 263 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL parameter is abnormal, it will indicate this error. Possible reason： ■Electronic expansion valve doesn’t operate normally; ■ODU pipeline is blocked; Troubleshooting: 2.2.4.138 “UC” Setting of master IDU is done Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: This code is status code, not an error.
  • Page 264 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 2.2.4.140 “UE” auto charging of refrigerant is invalid Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: When outdoor ambient temperature exceeds the temperature range of auto charging of refrigerant (normal temperature range is 0~40℃), the unit will report this error.
  • Page 265 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL...

  • Page 266: Part 3 Key Parts Maintenance

    GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL Part 3 Key Parts Maintenance 1 Cautions on Controller AP1 Replacement 1.1 Cautions on ODU AP1 Replacement 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 267: C Autions

    GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL If the LEDs flash, the ODU and IDUs normally communicate; if the LEDs are steadily on, communication is faulty. Check communication lines connecting the ODU and IDUs. Note: After AP1 is replaced, you should power on the ODU and IDUs at the same time or power on the ODU first;...
  • Page 268 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL Evaporating Temp. (°C) The figure below shows current curves that change with evaporating temperature and condensing temperature while the compressors work at 90 Hz. Evaporating Temp. (°C) Note: You can infer from the preceding figures the current of the compressors operating at other frequency bands.
  • Page 269 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL Current curve Condensing temp. Evaporating temp. (° C) The figure below shows current curves that change with evaporating temperature and condensing temperature while the compressor works at 90 Hz. Current curve Evaporating temp. (° C) Note: You can infer from the preceding figures the current of the compressor operating at other frequency bands.
  • Page 270 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL Description of electric expansion valve: ②Four-way valve: While this valve is normally running, the four copper pipes connected to it will suffer different temperature. When a unit switches to act the valve, you will feel obvious vibration and hear sound.
  • Page 271 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL Labels on the 4-way valve and their meanings: D – connects to exhaust; E – connects to IDU evaporator; S – connects to intake of gas separator; C – connects to condenser. When the system is cooling, the pipe at side C works at high pressure high temperature, the pipes at sides E and S work at low pressure low temperature;...
  • Page 272 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 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. As shown in the figure below, put the black test probe to pad P (on the left of pad U (BL)) and the red test probe to pad U (BL) (make sure the moisture proof tape is removed).
  • Page 273 GREE GMV5 HR INVERTER VRF UNITS 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. If it is “0”...
  • Page 274 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL (make sure the moisture proof tape is removed). In normal cases, the multimeter should read 0.39± 0.3 V. If it is “0” or infinitely great, the IPM module is faulty. 7. As shown in the figure below, put the black test probe to pad W (RD) and the red test probe to pad NW (make sure the moisture proof tape is removed).
  • Page 275 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL Measure the resistance to earth of each wiring terminal. The value should be 10 MΩ. If not, the compressor has an internal fault. Step 3: Check the solenoid valves of the system, include electric expansion valves, oil return valves, and oil balance valves.
  • Page 276 For GMV5 series, only GMV-Q400WM/E-X and GMV-Q450WM/E-X units are configured with the left electric box, which contains mainly the drive of the compressor E405DHD-38D2YG. After the box is removed, take care with the removal of electric parts’ lines. DO NOT pull the lines with excessive force; or they may be broken.
  • Page 277 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL Refrigerant should be released from the high pressure side and low pressure side at the same time. Control the release speed. At the low pressure side, refrigerant is released through the low pressure check valve.
  • Page 278 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 1、Inlet of inverter compressor 2、Outlet of inverter compressor 3、Unscrew the compressor For GMV-Q400WM/E-X and GMV-Q450WM/E-X variable frequency units, their compressors are both inverter compressors, differing in models. The one close to the condenser is compressor 1 “E656DHD-65D2YG”...
  • Page 279 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL The check procedure is similar to the preceding. Note: Before replacing the faulty compressors, make sure to block their openings with tapes. They should be kept intact for further analysis. Step 5: Check system parts.
  • Page 280 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL After the gas separator is taken out, check whether it contains impurities. The check procedure is as follows: Use a glass container to hold the liquid. Check liquid impurities and colours and block the container for further factory inspection.
  • Page 281 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL ②Clear 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 thefilter.
  • Page 282 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL For other pipeline parts, clear them based on actual situation. If you do not replace the parts immediately, make sure to block the pipes with tapes, preventing air moistures and impurities from contaminating them.
  • Page 283 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL Note: Compressor lubricant must be kept completely airtight. Hitachi compressors use special lubricant FVC68D or FV68H whose moisture absorption capability is high. Requirements on air-tightness of these compressors are higher. 2. Prepare other materials.
  • Page 284 GREE GMV5 HR INVERTER VRF UNITS 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 proper position 4 、 screw the separator onto the chassis Step 9: Install a new oil separator.
  • Page 285 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 1、 Weld the inlet of inverter compressor 2、 Weld the outlet of inverter compressor 3 、 Screw the compressor For compressors of GMV-Q400WM/E-X and GMV-Q450WM/E-X units, make sure the new compressors are consistent with the faulty ones in model. If both compressors need replacement, make sure corresponding position and wiring are correct.
  • Page 286 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 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: Before installing new compressors, remove the sealing rubbers and weld the compressors with corresponding pipes.
  • Page 287 3.5 L new lubricant into the system (determined by referring to the accessory list). Specific procedure is as follows: 1) GMV5 series units use FVC68D lubricant. Make sure to confirm the trademark of the lubricant first. Lubricant of other trademarks is not allowed.
  • Page 288 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL requirement to add qualified lubricant of the specified trademark and ensure properness of fill amount. Step 13: Vacuum-pump. After lubricant is added, keep on extracting air through a vacuum pump till the internal pressure reaches...

  • Page 289: R Eplacement

    GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 3 Cautions on Compressor Drive Replacement 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 290 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL Communication line between master unit and the drive Communication line between compressor drive and fan drive Compressor drive output 18 VDC Connect to compressor U – blue V – yellow W – red Reactor’s wiring terminal is...
  • Page 291 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL Install a new compressor drive, screw and wire it. U – blue V – yellow W – red Connect to a reactor and do not distinguish by polarity...
  • Page 292 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 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 1.
  • Page 293 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL ● Remove the compressor from the 5. Remove the compressor. chassis. ● Put the compressor in a proper 6. Install a new compressor on the position. ● Use a wrench to screw the nuts on chassis.
  • Page 294 GREE GMV5 HR INVERTER VRF UNITS 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 1. Loosen the hooks at the bottom of the panels.
  • Page 295 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL ●Put the valve in a proper position. 5. Install a new four-way ● Weld the valve with the pipeline. valve. ●Before welding, cover the valve with wet cloth to avoid internal slide from being burnt and prevent water from flowing in the pipeline.
  • Page 296 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL ●Disconnect internal and external 2. Remove the electric box. connecting lines of the electric box. ●Protect the internal parts during the disassembly. ●Remove the coil from the electric 3. Disassemble the electric expansion expansion valve.
  • Page 297 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL ●Put the electric box back to original 6. Fix and wire the electric box. position and screw it. ● Connect all lines. ●Check various parts and connecting 7. Check and install the front panels.
  • Page 298 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL ● Use a screwdriver to unscrew the oil 3. Disassemble the oil separator. separator. ● Loosen the electric heating belt. ●Heat the four pipe joints of the oil separator by welding and remove the connecting pipes.
  • Page 299 GREE GMV5 HR INVERTER VRF UNITS 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 1. Loosen the hooks at the bottom of the panels.
  • Page 300 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL ●Put the electric box back to original 6. Fix and wire the electric box. position and screw it. ● Connect all lines. ●Check various parts and connecting 7. Check and install the front panels.
  • Page 301 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL ●Heat the connecting pipes of the 3. Disassemble the heat exchanging board. heat exchanging board by acetylene welding and then remove the pipes. Note: Avoid nearby parts from being burnt during welding. The joints of the board must be welded with copper plated steel.
  • Page 302 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL Assembly and Disassembly of Mode Exchanger Take the one-to-two mode exchanger as an example Step Diagram Operation Procedure ● Remove 6 screws used for fixing Remove the the cover plate, and then remove the cover plate cover plate.
  • Page 303 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL Remove the ● Remove screws used for fixing the coil of coil of solenoid valve, and then solenoid remove the coil of solenoid valve valve and and the coil of electronic expansion the coil of valve.
  • Page 304 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 5 Common Parameter Lists 5.1 R410a refrigerant pressure / saturation temperature list Corresponding Corresponding Temperature Corresponding saturation Temperature Temperature saturation pressure saturation pressure (° C) pressure (BAR) (° C) (° C) (BAR) (BAR) 1.54...
  • Page 305 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 63.46 0.631 1.544 2.992 60.23 0.658 1.497 3.001 57.18 0.686 1.451 3.009 54.31 0.714 1.408 3.017 51.59 0.743 1.363 3.025 49.02 0.773 1.322 3.033 46.8 0.801 1.282 3.04 44.31 0.835 1.244 3.047 42.14...
  • Page 306 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 3.333 0.254 3.245 3.217 2.717 0.248 3.246 3.105 2.734 0.243 3.247 2.998 2.75 0.237 3.249 2.898 2.766 0.232 3.25 2.797 2.781 0.227 3.251 2.702 2.796 0.222 3.252 2.611 2.811 0.217 3.253 5.2.2 Voltage list of 20 kΩ pipeline temperature sensors (including...
  • Page 307 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 30.04 1.319 0.9556 3.15 28.68 1.356 0.9295 3.153 27.39 1.393 0.9043 3.157 26.17 1.429 0.8799 3.161 25.01 1.466 0.8562 3.165 23.9 1.503 0.8333 3.168 22.85 1.54 0.8111 3.171 21.85 1.577 0.7895 3.175 20.9...
  • Page 308 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 660.93 0.049 9.8269 1.664 620.94 0.052 9.4896 1.693 583.72 0.056 9.1655 1.722 549.04 0.059 8.9542 1.741 516.71 0.063 8.5551 1.778 486.55 0.066 5.9676 1.806 458.4 0.07 7.9913 1.834 432.1 0.075 7.7257 1.862 407.51...
  • Page 309 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 30.787 0.809 1.5996 2.845 29.544 0.835 1.5602 2.855 28.359 0.86 1.522 2.864 27.227 0.886 1.485 2.873 26.147 0.913 1.449 2.882 25.114 0.94 1.4141 2.891 24.128 0.967 1.3803 23.186 0.994 1.3474 2.908 22.286 1.022...
  • Page 310 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 0.551 2876 2.98 0.573 2944 3.053 0.596 3013 3.126 0.619 3083 3.201 0.644 3154 3.277 0.668 3226 3.353 0.693 3300 3.432 0.718 3374 3.511 0.745 3450 3.592 0.772 3528 3.675 0.799 3606 3.759...
  • Page 311 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 0.665 1337 2.971 0.683 1375 3.047 0.701 1413 3.123 0.719 1453 3.203 0.737 1493 3.283 0.757 1535 3.367 0.777 1577 3.451 0.797 1620 3.537 0.819 1664 3.625 0.841 1708 3.713 0.863 1754 3.805...
  • Page 312 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 5.4 Exploded Views and Spaer Part List 5.41 Model: GMV-Q224WM/E-X, GMV-Q280WM/E-X Exploded View: 64 65 66 电器盒上层 电器盒下层...
  • Page 313 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL Parts List: GMV-Q224WM/E-X GMV-Q280WM/E-X CN851W1800 Name of part Product Code CN851W2270 Product Code Part code Quantity Part code Quantity Rear Grill 01574105 01574105 Coping 01264100030P 01264100030P Diversion Circle 10474100 10474100 Axial Flow Fan Sub-Assy...
  • Page 314 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL Magnet Coil 4304000409 4304000409 Magnet Coil 4304000439 4304000439 Magnet Coil 4304000411 4304000411 Magnet Coil 4304000436 4304000436 Electric Expand Valve Fitting 4304413204 4304413204 Electric Expand Valve 4304413206 4304413206 Fitting Pressure Sensor 32218000009 32218000009...
  • Page 315 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 5.42 Model: GMV-Q335WM/E-X Exploded View: 64 65 66 电器盒上层 电器盒下层 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39...
  • Page 316 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL Parts List: GMV-Q335WM/E-X Name of part Product Code CN851W2310 Part code Quantity Rear Grill 01574100002 Coping 01264100006P Diversion Circle 10474100002 Axial Flow Fan 10434100002 Fan Motor 15704124 Electromagnetic Valve 43000054 Strainer 07415200002...
  • Page 317 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL Magnet Coil 4304000409 Magnet Coil 4304000401 Magnet Coil 4304000439 Magnet Coil 4304000411 Magnet Coil 4304000436 Electric expand valve fitting 4304413203 Electric Expand Valve Fitting 4304413204 Pressure Sensor 32218000009 Electric Heater(Compressor) 7651540713 Pressure sensor...
  • Page 318 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 5.43 Model: GMV-Q400WM/E-X, GMV-Q450WM/E-X Exploded View: 77 78 79 80 81 82 72 73 74 电器盒上层 电器盒下层 左电器盒 右电器盒 24 25 26 27 28 30 31 32 33 41 42 43...
  • Page 319 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL Parts List: GMV-Q400WM/E-X GMV-Q450WM/E-X CN851W2300 CN851W2290 Name of part Product Code Product Code Part code Quantity Part code Quantity Rear Grill 01574100002 01574100002 Coping 01264100006P 01264100006P Diversion Circle 10474100002 10474100002 Axial Flow Fan...
  • Page 320 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL Compressor and Fittings 00204100008 00204100008 Top Cover (front) 01264100004P 01264100004P Handle 26904100016 26904100016 Front Panel (left) 01544100003P 01544100003P Front Panel (right) 01544100005P 01544100005P Sensor Sub-assy 39008000119G 39008000119G Magnet Coil 4304000414 4304000414 Magnet Coil...

  • Page 321: Part 1 Engineering Debugger

    At present, Gree Debugger can be used to comprehensively monitor and control Gree multi units. 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.
  • Page 322 Air conditioning unit part, mainly composed of air conditioning units, including ODUs, IDUs, and lines. If the lines are not long enough, the transfer board accompanied with Gree Debugger can help connect the lines together. In a single-system network, the exchangers can be connected to an IDU or an ODU. In a...
  • Page 323 Converts unit communication mode USB data converter ME40-00/B 30118000001 into PC recognizable communication mode This disk contains the Gree Debugger, monitor Debugger suite (disk) DE40-33/A(C) 36400000003 software, USB driver, and USB converter configuration software A line connecting a PC with the...
  • Page 324 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 software do not support this interface. RS485 interface: When air conditioners work in RS485 mode, they are connected to the converter over this RS485 interface.
  • Page 325 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 326 ODUs and gateways. 4.1.4 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. 4.2 How to Use Gree Debugger 4.2.1 Viewing Unit Parameters...
  • Page 327 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL Select a unit. If units you want to monitor have been connected and normally communicating, and COM interface and protocol are set, click “Connect” to access the parameter page. If not, follow the figure below to connect the...
  • Page 328 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL Set COM interface. Gree Debugger will automatically detect available serial ports of your PC. You can select one of them.
  • Page 329 Set protocol. This is to choose a communication mode of your air conditioning units. At present, CAN is the proper communication mode. 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 330 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL The following figure shows the compositions of the parameter page. You can click to hide...
  • Page 331 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 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 one module only (by default, two modules are displayed at the same time in the proportion of 3:1).
  • Page 332 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 333 GREE GMV5 HR INVERTER VRF UNITS 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 334 GMV5 HR INVERTER VRF UNITS SERVICE MANUAL The icon indicates that corresponding step failed and a fault exists. In this case, users need to rectify the fault first. After the issue is addressed, Gree Debugger automatically continues the debug procedure...
  • Page 335 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL if there is not an “OK” button available; otherwise, users should click “OK” to confirm. Click corresponding debug information will be shown, helping you analyze the fault. Click “Close” to close the information.
  • Page 336 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL Steps 11, 13, and 14 are reserved. Steps 15 to 17 are concurrent steps. That is, only one of them will be executed at one time. When “Debugging complete”, the engineering debug is finished.
  • Page 337 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 4.2.3 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...
  • Page 338 GREE GMV5 HR INVERTER VRF UNITS 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...
  • Page 339 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL check the IDUs. Parameter information of selected IDUs will be shown in the Settings area. Click “Set…” and in the displayed dialog box to select. After you click “Set”, the page will be updated to show the click selected value.
  • Page 340 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL Searching for database files To search for database files, click "Open Data Folder" to open the default folder that is saving database files.
  • Page 341 GREE GMV5 HR INVERTER VRF UNITS 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 342 GREE GMV5 HR INVERTER VRF UNITS 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...
  • Page 343 GMV5 HR INVERTER VRF UNITS SERVICE MANUAL Changing database saving path and rebuilding database “Change Database Saving Path” must be configured before Gree Debugger runs. Choose “Others” -> “Change Database Saving Path”. In the displayed dialog box, click “Browse” to select a path.
  • Page 344 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL During playback, drag the sliding block below to select the period of playback. The following operations can be carried out during playback: Click”Pause Playback”：Suspend the playback Click”Continue Playback”：Continue the interrupted playback Click”Stop Playback”：Stop the playback (exit from the playback function) “Start”...
  • Page 345 This is a simplified software debug procedure. For details, read the following section. 5.2 Troubleshooting 5.2.1 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 346: Part 2 Remote Control

    Server: A PC for installing Gree CAC Remote Monitoring System and providing remote monitoring and data collection services. 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 347 2.3 Network Topology of Gree CAC Remote Monitoring System Gree CAC Remote Monitoring System relies on Modbus gateways (model, for example, ME30-24/E4(M)) to communicate with software. The software, gateways, and air conditioning units are combined into a system network. See the following figure:...
  • Page 348 GREE GMV5 HR INVERTER VRF UNITS 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 Monitoring and Control System...
  • Page 349 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 350 2.4.2 Modbus Gateway 2.4.2.1 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 351 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 352 2.4.2.3 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. 1. Selection of Communication Lines...
  • Page 353 Note: 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 Gree Remote Monitoring System/BMS System...
  • Page 354 (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 web-based remote monitoring and control system, and then connect RS485-1 interface R+ and R- of this Modbus gateway...
  • Page 355 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 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 356 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL Address Code Address DIP 1 1 0 1 0 0 0 0 11 Address DIP The following figure shows how to set address 43. Address DIP (3) Function DIP Switch-CAN Bus Matched Resistance Setting...
  • Page 357 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL Master outdoor unit Matched resistance Master ODU Matched resistance (4) Function DIP Switch-RS485 Bus Matched Resistance Setting The seventh position of this function DIP switch is used to set the matched resistance for the RS485 bus...
  • Page 358 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 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). It flashes when the gateway receives data from the monitoring PC or BMS.
  • Page 359 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL DO1...DO5 Digital outputs: relay outputs, normally open contacts. Maximum allowable power: 250VAC,3A; 30VDC,3A E.g.: when DO 5 is input the binary signal “1”, its two contacts will be closed; when DO 5 is input the binary signal “0”, its two contacts will be opened.
  • Page 360 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 2.4.3 Introduction of Optoelectronic Isolated Converter...
  • Page 361 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 2.4.3.1 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 362 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 2.4.3.5 Cautions on Installation ① It must be installed indoors. Avoid knock or exposure to sunshine or rain. It is suggested to place it in the monitoring room together with the computer.
  • Page 363 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL Note: Actual product prevails. The picture is for reference only. 2.4.4.3 Interfaces and LEDs Interface Name Description Remark Accompanied power Power interface Input AC220V~50HZ; Output 12~30V DC 800mA supply of the repeater...
  • Page 364 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL the control room together with the computer. ② The manufacturer's original equipment must be used. Never use any other model or substitute product. ③ Independent power supply is required. Make sure to install adequate 220V AC socket for power...
  • Page 365 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 366 GREE GMV5 HR INVERTER VRF UNITS 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 367 GMV5 HR INVERTER VRF UNITS SERVICE MANUAL For details, read the following section. 2.5.3.1 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 the Setup Wizard will install Windows Installer 4.5 for you.
  • Page 368 GREE GMV5 HR INVERTER VRF UNITS 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 369 GREE GMV5 HR INVERTER VRF UNITS 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 370 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL...
  • Page 371 GREE GMV5 HR INVERTER VRF UNITS 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.
  • Page 372 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 373 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 11. In the displayed window, select “I Agree” and click “Next” to continue.
  • Page 374 GREE GMV5 HR INVERTER VRF UNITS 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 375 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 software, and you can continue to use it.
  • Page 376 1. Stop the “BAS Manager” service. 2. Choose “Start” -> “Settings” -> “Control Panel” and double click “Add or Remove Programs”. 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 377 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL...
  • Page 378 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 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 379 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 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...
  • Page 380 GREE GMV5 HR INVERTER VRF UNITS 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 381 GREE GMV5 HR INVERTER VRF UNITS 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.
  • Page 382 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL Note: 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”...
  • Page 383 The offset can be set on only the master ODU whose centralized control address is 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.
  • Page 384 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”. 2.7.4 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 385 “Open”. ②In the displayed “BAS Manager” window, click “Start” to enable BAS Manager. Method 2 Choose “Start” -> “All Programs” -> “Gree CAC Remote Monitoring System” -> “ServiceManager”. In the displayed “BAS Manager” window, click “Start” to enable BAS Manager.
  • Page 386 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL Step 3: Log in to Gree CAC Remote Monitoring System. Step 4: Enter the “Visual config” page and click “Automatic detect”.
  • Page 387 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL After detection, detected devices will be listed in the “Net tree”.
  • Page 388 GREE GMV5 HR INVERTER VRF UNITS 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”.
  • Page 389 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL Step 8: Add the devices selected from the “Net tree” into the “Project tree”. Click the rooms in the “Project tree” one after another. Double click a room. Click “Net tree” and select devices based on the air conditioner list. Drag the devices into the room.
  • Page 390 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL View the devices in the “Project tree”. Step 9: Save the project.
  • Page 391 GREE GMV5 HR INVERTER VRF UNITS 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 392 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 2.8 Troubleshooting 2.8.1 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.
  • Page 393 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL Possible cause: The database for the Remote Monitoring System on the server is not enabled. Solution: Check whether the database for the Remote Monitoring System in the server is enabled. Right click “My computer”...
  • Page 394 GREE GMV5 HR INVERTER VRF UNITS 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 395 GMV5 HR INVERTER VRF UNITS SERVICE MANUAL Method b Choose “Start” -> “All Programs” -> “Gree CAC Remote Monitoring System”-> “ServiceManager”. 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 bar...
  • Page 396 “Open”. ②In the displayed “BAS Manager” window, click “Start” to enable BAS Manager. Method b Choose “Start” -> “All Programs” -> “Gree CAC Remote Monitoring System” -> “ServiceManager”. In the displayed “BAS Manager” window, click “Start” to enable BAS Manager.
  • Page 397 GREE GMV5 HR INVERTER VRF UNITS 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: Possible causes: The server is not started.
  • Page 398 GREE GMV5 HR INVERTER VRF UNITS SERVICE MANUAL 1) Check whether the server is started. 2) Check the network line of the server and client for looseness or damage. 3) Check the network adapter of the server and client for looseness or damage; and check whether “Local connect”...
  • Page 399 GREE GMV5 HR INVERTER VRF UNITS 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”...
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