Gree Ultra Heat GMV Multi VRF Heat Pump Series Service Manual

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Ultra Heat GMV Multi VRF

——Heat Pump Series

TECHNICAL SERVICE MANUAL (R410A)

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Summary of Contents for Gree Ultra Heat GMV Multi VRF Heat Pump Series

Page 1 Ultra Heat GMV Multi VRF ——Heat Pump Series TECHNICAL SERVICE MANUAL (R410A)
Page 2: Table Of Contents
CONTENTS CONTENTS ................................I PREFACE .................................. 1 CHAPTER 1 INTRODUCTION TO BASIC FEATURES OF UNITS ..............7 1 BASIC OPERATING PRINCIPLE ....................... 7 2 INTERNAL PIPING DESIGN OF THE UNITS ..................8 2.1 Piping Diagram of GMV-V72W/A-F(U) 、GMV-V96W/A-F(U) ..........8 2.2 Names and main functions of components ................
Page 3 2.1 Pipes ..............................50 2.2 Requirements on Installation ...................... 50 2.3 Other Requirements ........................51 2.4 Requirements on Installation of Drain Pipes for Different Types of IDUs ....... 52 2.5 Requirements on Independent Drainage for Each IDU ............53 2.6 Requirements on Centralized Drainage for IDUs ..............53 3 INSULATION SYSTEM ..........................
Page 4 2 ODU LEDS TABLE ........................... 104 PART 2 EXCEPTIONS AND TROUBLESHOOTING ................107 1 HOW TO LOCATE A FAULTY IDU PROMPTLY .................. 107 2 EXCEPTIONS ANALYZING AND TROUBLESHOOTING ..............108 2.1 Form Analyzing ..........................108 2.2 Flowchart Analyzing ........................110 PART 3 KEY PARTS MAINTENANCE .....................
Page 5 4.2 Communication Debug between Gateways and Air Conditioning Units ....... 223 4.3 Communication Debug between Gateways and Electric Meters ........224 4.4 Communication Debug between Gateways and Gree VRF Monitoring System ..226 5 TROUBLESHOOTING ..........................230 5.1 Hardware Faults ..........................230...
Page 6: Preface
Ultra Heat GMV VRF Technical Service Manual PREFACE AND SAFTY PRECAUTIONS PREFACE This manual specifies safe operation requirements for Ultra Heat GMV 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 7 Do not reconstruct to change the settings of the protection devices. If the pressure switch, thermal switch, or other protection device is shorted and operated forcibly, or parts other than those specified by GREE are used, fire or explosion may result. Ventilate before operating air conditioner when gas leaked out.
Page 8 Ultra Heat GMV VRF Technical Service Manual PREFACE AND SAFTY PRECAUTIONS If the air conditioner is installed in a small room, measures must be taken to prevent the refrigerant concentration from exceeding the safety limit when the refrigerant leaks. Consult the dealer regarding the appropriate measures to prevent the safety limit from being exceeded. Should the refrigerant leak and cause the safety limit to be exceeded, hazards due to lack of oxygen in the room could result.
Page 9 Ultra Heat GMV VRF Technical Service Manual PREFACE AND SAFTY PRECAUTIONS Installation Always check for gas (refrigerant) leakage after installation or repair of product. Low refrigerant levels may cause failure of product. Do not install the product where the noise or hot air from the outdoor unit could damage the neighborhoods.
Page 10 Ultra Heat GMV VRF Technical Service Manual PREFACE AND SAFTY PRECAUTIONS Inadequate connection and fastening may generate heat and cause a fire. Be sure the installation area does not deteriorate with age. If the base collapses, the air conditioner could fall with it, causing property damage, product failure, or personal injury.
Page 11 Ultra Heat GMV VRF Technical Service Manual UNIT INTRODUCTION CHAPTER 1 INTRODUCTION TO BASIC FEATURES OF UNITS...
Page 12: Chapter 1 Introduction To Basic Features Of Units
Ultra Heat GMV VRF Technical Service Manual UNIT INTRODUCTION CHAPTER 1 INTRODUCTION TO BASIC FEATURES OF UNITS 1 BASIC OPERATING PRINCIPLE The operating principle is as follows: When an indoor unit (IDU) is operating in cooling mode, the outdoor unit (ODU) can correspondingly enable the outdoor module based on the operating load requirement of the IDU.
Page 13: Internal Piping Design Of The Units
Ultra Heat GMV VRF Technical Service Manual UNIT INTRODUCTION 2 INTERNAL PIPING DESIGN OF THE UNITS 2.1 Piping Diagram of GMV-V72W/A-F(U) 、GMV-V96W/A-F(U) 2.2 Names and main functions of components Name Main Function Adjusts its own rotational speed based on the actual requirement of the Compressor system to implement capacity control.
Page 14 Ultra Heat GMV VRF Technical Service Manual UNIT INTRODUCTION Heat exchanger Used for outdoor heat exchange. Strengthens heat exchanging. Defrosting temperature sensor Used for defrosting detection. Electronic expansion valve for Controls refrigerant adjustment in heating mode. heating One-way valve Controls refrigerant flow direction. Unloading valve Opening if the pressure inside the liquid pipe /gas pipe is too high.
Page 15: Basic Parameters Of Odu
Ultra Heat GMV VRF Technical Service Manual UNIT INTRODUCTION 3 BASIC PARAMETERS OF ODU Outdoor Units_Heat Recovery Model GMV-V72W/A-F(U) GMV-V96W/A-F(U) Btu/h 72000 96000 Nominal Cooling Capacity 21.1 28.1 Btu/h 81000 108000 Nominal Heating Capacity 23.7 31.6 Performance Cooling Power Input 5.54 7.87 Heating Power Input...
Page 16: Electrical Parameters
Ultra Heat GMV VRF Technical Service Manual UNIT INTRODUCTION 1420×840×1775 1420×840×1775 Packaging Dimension 56×33×69-7/8 56×33×69-7/8 Net Weight lbs. Weight Gross Weight lbs. Maximum Quantity of Connected Indoor Unit unit High Pressure High pressure sensor, high pressure switch Protection Protection Devices Compressor/Fan Over-current protection, over-heat protection Inverter...
Page 17: Optional Accessories
Ultra Heat GMV VRF Technical Service Manual UNIT INTRODUCTION When conducting maintenance based on above circuit diagrams, units must be power-off. Please strictly following the circuit diagrams when reconnecting the wires, otherwise, electric shock may occur. 5 OPTIONAL ACCESSORIES Ultra Heat GMV series VRF units support the following optional accessories: Export Model Remark ML01R...
Page 18: Basic Requirement For Pipe Connection
Ultra Heat GMV VRF Technical Service Manual UNIT INTRODUCTION NOTICE! Contact local sales company for optional accessories. 6 BASIC REQUIREMENT FOR PIPE CONNECTION 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 and gas pipes.
Page 19: Precautions On Refrigerant Leakage
Ultra Heat GMV VRF Technical Service Manual UNIT INTRODUCTION 2. Each ODU system can be connected to multiple IDUs. Detailed information about the number of units to be connected and capacity ranges is shown in the following table: Capacity Range of Connected IDU (kBtu/h) Maximum Number of Model Connected IDUs (units)
Page 20 0.3kg /m³ (0.66lbs/m³ ) as the maximum supported refrigerant concentration. (4) If the maximum refrigerant concentration exceeds the allowed threshold, the refrigeration system must be redesigned. In this case, separate the refrigeration system into multiple small-capacity refrigeration systems, or contact local Gree sales company.
Page 21: Unit Operating Temperature
Ultra Heat GMV VRF Technical Service Manual UNIT INTRODUCTION If the above equation cannot be satisfied, then follow the following steps.  Selection of air conditioning system: select one of the next (1) Installation of effective opening part (2) Reconfirmation of Outdoor Unit capacity and piping length (3) Reduction of the amount of refrigerant (4) Installation of 2 or more security device (alarm for gas leakage) ...
Page 22 Ultra Heat GMV VRF Technical Service Manual INSTALLATION CHAPTER 2 INSTALLATION...
Page 23: Chapter 2 Installation
Ultra Heat GMV VRF Technical Service Manual INSTALLATION CHAPTER 2 INSTALLATION PART 1 ENGINEERING INSTALLATION PREPARATION 1 INSTALLATION SAFETY Personnel and property safety are highly concerned during the entire installation process. Installation implementation must abide by relevant national safety regulations to ensure personnel and property safety.
Page 24: Cooperation Between Different Professions
Ultra Heat GMV VRF Technical Service Manual INSTALLATION Insufficient refrigerant circulating in the system decreases the cooling performance of the air conditioner. Long-term operation under such The refrigerant pipe leaks. circumstance may cause an overheating compressor or even damage the compressor.
Page 25: Requirements For Cooperation With Decoration Engineering
Ultra Heat GMV VRF Technical Service Manual INSTALLATION on the roof from being damaged in later phase of installation. (3) At places on walls or floors where pipes need to go through, holes or casing should be preserved. If the pipe needs to go through a bearing beam, a steel casing must be prepared. 3.2 Requirements for Cooperation with Decoration Engineering The air conditioning installation should not damage the bearing structure or the decorative style.
Page 26 Ultra Heat GMV VRF Technical Service Manual INSTALLATION...
Page 27: Onsite Review Of Design Drawing
Ultra Heat GMV VRF Technical Service Manual INSTALLATION 4 ONSITE REVIEW OF DESIGN DRAWING Installation personnel must carefully read and understand the design scheme and drawings provided by engineering designers, and prepare detailed and feasible construction organization design after reviewing the onsite status. The following aspects of working drawing must be reviewed: (1) The loads of indoor and ODUs must match.
Page 28: Construction Organization Process
Ultra Heat GMV VRF Technical Service Manual INSTALLATION 5 CONSTRUCTION ORGANIZATION PROCESS Above process is a general operation process, which can be adjusted in practice according to local requirements.
Page 29: Part 2 Material Selections
Ultra Heat GMV VRF Technical Service Manual INSTALLATION PART 2 MATERIAL SELECTIONS 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 30: Power Cable
Ultra Heat GMV VRF Technical Service Manual INSTALLATION Total Length L(m) of Communication Cable Material Type Wire size Remarks between IDU Unit and IDU (ODU ) Unit m(feet) 1) If the wire diameter is enlarged to 2 ×AWG16, the total communication length can reach 1500m (4921- Light/Ordinary 1/4feet).
Page 31: Part 3 Installation Space Requirements
Ultra Heat GMV VRF Technical Service Manual INSTALLATION PART 3 INSTALLATION SPACE REQUIREMENTS 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 32 Ultra Heat GMV VRF Technical Service Manual INSTALLATION (2) When there is wall (or similar obstruction) above the unit, keep the distance between the unit top and the wall at least 3000mm (118-1/8inch) or above. When the unit is located in a totally open space with no obstructions in four directions, keep the distance between the unit top and wall at least 1500mm (59inch) or above (See Fig.1).
Page 33 Ultra Heat GMV VRF Technical Service Manual INSTALLATION (4) Anti-monsoon installation requirements for unit connecting exhaust duct: (5) Considering snow in outdoor unit installation (6) 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 34 Ultra Heat GMV VRF Technical Service Manual INSTALLATION drill, air screw driver and screwdriver. 3) Basic operation of connecting an ODU to static pressure ventilating duct Two methods are available to connect an ODU to static pressure ventilating duct. Method 1: Reserve the unit top case. Detailed operations are as follows: a).
Page 35 Ultra Heat GMV VRF Technical Service Manual INSTALLATION Step 5 Step 6 Method 2: Remove the unit top case. Detailed operations are as follows: a). Install the ODU (2) and steel-plate ventilating duct (1). Take out the grille from the top of the top case component.
Page 36 Ultra Heat GMV VRF Technical Service Manual INSTALLATION Step 3 Step 4 (1) When the effective area of air intake is less than 70% of the total air intake area of all ODUs, an induced draft fan is also required. The total air input of induced draft fan should be no less than 80% of the total supply air rate.
Page 37 Ultra Heat GMV VRF Technical Service Manual INSTALLATION ③ Do not touch heat exchanger fins with your bare hands. Otherwise you may get a cut in your hands. ④ Tear plastic packaging bag and scrap it so that children cannot play with it. Otherwise plastic packaging bag may suffocate children to death.
Page 38: Part 4 Requirements On Foundation Installation
Ultra Heat GMV VRF Technical Service Manual INSTALLATION 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. Requirements on the concrete foundation are as follows: ...
Page 39: Odu Fixing
Ultra Heat GMV VRF Technical Service Manual INSTALLATION (treatment of the liquid flowing out of the outdoor unit in operation), and the passages of the pipe and wiring, when making the ground support. ④ Do not use tube or pipe for liquid outlet in the Base pan. Use drainage instead for liquid outlet. The tube or pipe may freeze and the liquid may not be drained.
Page 40: Part 5 Piping Connection
Ultra Heat GMV VRF Technical Service Manual INSTALLATION PART 5 PIPING CONNECTION 1 SCHEMATIC DIAGRAM OF PIPING CONNECTION Module Gas pipe Liquid pipe Outdoor connection pipe Connection pipe between indoor branch and indoor units Indoor unit 1 Connection pipe between indoor branchs Branch between indoor units Connection pipe between indoor branch and indoor units Indoor...
Page 41 Ultra Heat GMV VRF Technical Service Manual INSTALLATION L10: Length from the first branch to the farthest IDU; L11: Length from the first branch to the nearest IDU; Equivalent length of branch of IDU is 0.5m (1-3/4feet). Allowable Value R410A Refrigerant System Fitting Pipe m(feet) ≤1000(3280-3/4)
Page 42: Fitting Pipe Between Odu And The First Manifold
Ultra Heat GMV VRF Technical Service Manual INSTALLATION Under the following conditions, the length can reach 90m (295-1/4feet). 1) Actual length of pipe in total: L1+L2×2+L3×2+L4×2+…+L9×2+a+b+…+i+j≤1000m (3280- 3/4feet). 2) Length between each IDU and its nearest branch a, b, c, d, e, f, g, h, i, j≤40m (131- 1/4feet). 3) Difference between the pipe length from the first branch of IDU to the farthest IDU and the pipe length from the first branch of IDU to the nearest IDU: L10-L11≤40m (131-1/4feet).
Page 43 Ultra Heat GMV VRF Technical Service Manual INSTALLATION (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: Pipe between outdoor unit and the first indoor branch Basic module Gas pipe mm(inch) Liquid pipe mm(inch)
Page 44 Ultra Heat GMV VRF Technical Service Manual INSTALLATION Φ28.6(1-1/8) Φ15.9(5/8) 144000＜X≤216000 Φ34.9(1-3/8) Φ15.9(5/8) 216000＜X≤240000 Φ34.9(1-3/8) Φ19.05(3/4) 240000＜X≤336000 Φ41.3(1-5/8) Φ19.05(3/4) 336000＜X (5) Piping between branch and indoor unit (―a, c, d‖) Size of connection pipe between indoor branch and indoor unit Rated capacity of indoor units: X ((Btu/h) Gas pipe mm(inch)
Page 45: Part 6 Pipe Installation And Insulation
Ultra Heat GMV VRF Technical Service Manual INSTALLATION 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 46: Processing To Refrigerant Pipes
Ultra Heat GMV VRF Technical Service Manual INSTALLATION  ① Always careful not to leak the refrigerant during welding. ② The refrigerant generates poisonous gas harmful to human body if combusted. ③ Do not perform welding in a closed space. ④...
Page 47: Installation Of Refrigerant Pipes
Ultra Heat GMV VRF Technical Service Manual INSTALLATION welding joint and the bending part should be less than 100 mm(3.94inch). 1.2.4 Pipe expanding Pipe expanding is used to provide a welding point for pipe connection. Requirements on pipe expanding are as follows: (1) All burrs and sundries inside the pipe must be cleared after cut-off.
Page 48 Ultra Heat GMV VRF Technical Service Manual INSTALLATION (3) Construction of steel casings Equip a steel casing for all pipes which are led through the wall or floor. Pipe welding joints cannot be placed inside the sleeve. The steel casing must be parallel with the bottom of the wall or floor but be 20 mm(0.8inch) or more above the bottom.
Page 49 Ultra Heat GMV VRF Technical Service Manual INSTALLATION 1.3.4 Pipe connection 1.3.4.1 Flaring connection The refrigerant pipes and IDUs are connected by using the flare opening. Therefore, the quality of flaring connection must be ensured. The flaring depth of the bell mouth cannot be smaller than the caliber.
Page 50 Ultra Heat GMV VRF Technical Service Manual INSTALLATION The nitrogen flow is above 4-6 L/min (pressure of 0.02 to 0.05 MPa) and must be regulated based on the pipe caliber.  During welding, nitrogen-filling protection must be conducted; otherwise, the remaining substance in pipeline will cause blockage or leakage to the system (e.g.
Page 51 Ultra Heat GMV VRF Technical Service Manual INSTALLATION installation: The direction can be upwards or downwards. Three ports must be on the same elevation without inclination. See (a). 2) T-type manifold must be installed horizontally with inclination. See (b). 3) The length of a straight pipe between two manifolds cannot be less than 500 mm（19.7inch）. 4) The length of a straight pipe before the main pipe port of the manifold cannot be less than 500 mm（19.7inch）and for FQ04 manifold, keep it at least 800mm (31-1/2inch).
Page 52 Ultra Heat GMV VRF Technical Service Manual INSTALLATION (5) Fixing of manifolds. There must be three fixing point for both horizontal and vertical installation of the Y-type manifold. Fixing point 1: 100 mm (3.94inch) on the main inlet manifold from the welding point. Fixing point 2: 200 mm (7.88inch) on the main branched pipe from the welding point.
Page 53 Then insert the copper pipe to proper depth. A concave bag for positioning is available to the manifold purchased from Gree.
Page 54 Ultra Heat GMV VRF Technical Service Manual INSTALLATION (9) Because the manifold structure is complex, perform with care to ensure tight insulation. 1.3.7 Pipe cleaning by nitrogen Before connecting the flare opening of the pipe to the IDU, connect the pressure regulator valve on the nitrogen cylinder to the liquid pipe in the outdoor pipe system.
Page 55: Pipe Installations For The Condensate Water System
Ultra Heat GMV VRF Technical Service Manual INSTALLATION 2 PIPE INSTALLATIONS FOR THE CONDENSATE WATER SYSTEM 2.1 Pipes All of the selected condensate pipes must be consistent with local laws and regulations. 2.2 Requirements on Installation (1) Determine the direction and elevation of a condensate water pipe before installing it. Avoid overlapping it with other pipes to ensure straight inclination.
Page 56: Other Requirements
Ultra Heat GMV VRF Technical Service Manual INSTALLATION (7) After pipes are connected, perform a test with some water and another test with full water in the pipe to check whether drainage is smooth and whether water leakage exists in the pipe system. (8) Equip a steel casing for all pipes which are led through the wall or floor.
Page 57: Requirements On Installation Of Drain Pipes For Different Types Of Idus
Ultra Heat GMV VRF Technical Service Manual INSTALLATION (5) During condensate water pipe installation, ensure a distance above 500mm (19.7inch) between the pipe and the electric box of the unit for maintenance. In a case when the space is not enough, the final piping way must be determined by the technical personnel.
Page 58: Requirements On Independent Drainage For Each Idu
Ultra Heat GMV VRF Technical Service Manual INSTALLATION (2) Drain Pipe Installation for IDU a. Use pipe clips instead of applying glue to connect the hoses provided upon delivery and plastic pipes on the device. Connect the other end of the joint to the elbow. The height from the suction inlet of the discharge pump is about 200mm (7.87 inch) to 500 mm (19.7 inch).
Page 59: Insulation For The Condensate Water Pipe System
Ultra Heat GMV VRF Technical Service Manual INSTALLATION 3.1.2 Thickness of the insulation layer Φ ≤ 12.7 Φ ≥ 15.9 External Diameter of the Pipe inch Φ ≥ 15 Φ ≥ 20 Thickness of the Insulation Layer inch 0.59 0.79 Usesunblock, anti-weathering, and non-cracking insulation materials for outdoor pipes.
Page 60 Ultra Heat GMV VRF Technical Service Manual INSTALLATION (4) Thickness of the Insulation Layer For the air supply and return air pipe laid in a room without an air conditioner, thickness of the rubber and plastic insulation layer is 35 mm (1.38inch). For the air supply and return air pipe laid in an air conditioning room, thickness of the rubber and plastic insulation layer is 20 mm (0.79inch).
Page 61: Part 7 Electric And Controller Installation
Ultra Heat GMV VRF Technical Service Manual INSTALLATION PART 7 ELECTRIC AND CONTROLLER INSTALLATION  ① Follow ordinance of your governmental organization for technical standard related to electrical equipment, wiring regulations and guidance of each electric power company. ② Make sure to use specified wires for connections so that no external force is imparted to terminal connections.
Page 62: Installation Of The Power Cable
Ultra Heat GMV VRF Technical Service Manual INSTALLATION Method 2: Use different types of cables. The diameter of the power cable is larger than that of the communication cable. Alternatively, adopt three cores or more for the power cable and two cores for the communication cable. Elaborate the method with the installation personnel on site no matter which method is adopted.
Page 63: Procedure For Installing The Power Cable
Ultra Heat GMV VRF Technical Service Manual INSTALLATION power of the IDU or ODU. NOTICE! Maximum number of IDU is based upon ODU capacity. For details, please refer to the introduction of units’ combination.  ① Indoor Unit ground Lines are required for preventing electrical shock accident during current leakage, Communication disorder by noise effect and motor current leakage (without connection to pipe).
Page 64 Ultra Heat GMV VRF Technical Service Manual INSTALLATION (1) Knock off the knockouts used for threading the external power cable, fit the threading rubber ring to the hole, and thread the power cable through the hole. Connect L1, L2, L3,of the power cable, and the grounding cable to L1, L2, L3, on the power terminal block and the grounding screw next to the terminal block respectively.
Page 65: Installation Of The Communication System
Ultra Heat GMV VRF Technical Service Manual INSTALLATION NOTICE! Provide a threading rubber ring when threading a strong power cable or a communication cable. 3 INSTALLATION OF THE COMMUNICATION SYSTEM The CAN communication network is adopted for Ultra Heat GMV VRF system. Manual DIP or identification on polarities of the communication power is not required for the IDU.
Page 66: Connection Of Communication Cable Terminals
Ultra Heat GMV VRF Technical Service Manual INSTALLATION 3.1 Connection of Communication Cable Terminals All connections for communication of Ultra Heat GMV 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 IDU of the bus shall be connected to a matching resistor (placed in the package of the ODU).
Page 67 Ultra Heat GMV VRF Technical Service Manual INSTALLATION Connection modes for the single-module system are shown in the following figures. Connection of communication for single-module system: Connection of communication for multi refrigeration systems: NOTICE! ① The communication cable and power cable must be laid separately to avoid interference. ②...
Page 68 Ultra Heat GMV VRF Technical Service Manual INSTALLATION One wired controller controlling one IDU Two wired controllers controlling one IDU One wired controller controlling multiple IDUs 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.
Page 69 Ultra Heat GMV VRF Technical Service Manual INSTALLATION (3) Users can press the ―ENTER/CANCEL‖ button to return to the previous level till parameter setting exits. The parameter setting list is shown below: Parameter Parameter Parameter Default Remark code name scope value Set up 01: master...
Page 70: Part 8 Vacuumization And Desiccation For The Refrigerant System
Ultra Heat GMV VRF Technical Service Manual INSTALLATION 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 affusing 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 71: Vacuumization And Desiccation For The System
Ultra Heat GMV VRF Technical Service Manual INSTALLATION wrapping at the welding or flaring opening joints of the IDU. The pressure must be increased simultaneously for pipes on outdoor sides and cannot be increased for pipes on one side.  Before performing the air-tightness test, do not conduct insulation or wrapping at the welding joints, Otherwise, leak source cannot be detected quickly.
Page 72 Ultra Heat GMV VRF Technical Service Manual INSTALLATION discharged. (5) After vacuumization, turn off the regulator valve and keep for 1 hour. Ensure that the pressure of the regulator valve does not increase. 2.2.2 Precautions (1) Before vacuum pumping, make sure that outdoor unit’s liquid valve and gas valve are completely closed.
Page 73: Part 9 Refrigerant Perfusion
Ultra Heat GMV VRF Technical Service Manual INSTALLATION PART 9 REFRIGERANT PERFUSION 1 CALCULATION METHOD FOR PERFUSING REFRIGERANT Outdoor unit has been charged refrigerant before delivery. If field-installed connecting pipeline is longer than 1m (39-3/8inch), please refer to the following table for charging amount of refrigerant.
Page 74: Method For Perfusing Refrigerant
Ultra Heat GMV VRF Technical Service Manual INSTALLATION  Refrigerant amount must be calculated and treated by strictly following the above methods. Otherwise, system will not work normally and compressor may even be damaged.  Rated capacity configuration ratio C of outdoor/indoor unit = Rated Cooling capacity sum of indoor units/Rated Cooling capacity sum of outdoor units ...
Page 75: Refrigerant Perfusion During Running
Ultra Heat GMV VRF Technical Service Manual INSTALLATION Step 5: Turn on the valve of the high pressure gauge (while keep the valve of the high pressure gauge turned off) and then perfuse refrigerant to the system. Record the change of weight of the refrigerant tank.
Page 76 Ultra Heat GMV VRF Technical Service Manual INSTALLATION Step 2: Turn on the valves for the liquid and gas pipes of each module completely. Step 3: Make the system to run in commissioning mode via the commissioning software or the main board of the ODU.
Page 77 Ultra Heat GMV VRF Technical Service Manual COMMISSIONING OPERATION CHAPTER 3 COMMISSIONING OPERATION...
Page 78: Chapter 3 Commissioning Operation
Ultra Heat GMV VRF Technical Service Manual COMMISSIONING OPERATION CHAPTER 3 COMMISSIONING OPERATION PART 1 SECURITY REQUIREMENTS 1 PRECAUTIONS FOR CONSTRUCTION  All commissioning and maintenance personnel must learn and strictly comply with construction security specifications. Security measures must be taken especially for outdoor operations. ...
Page 79: System Function Dip Switch Settings
Ultra Heat GMV VRF Technical Service Manual COMMISSIONING OPERATION 3.1 System Function DIP Switch Settings Factory Name Meaning Remark Switch Settings Outdoor silent Sets the noise grades of unit when This DIP switch is used to set noise mode setting necessary, especially for hospital.
Page 80 Ultra Heat GMV VRF Technical Service Manual COMMISSIONING OPERATION methods are as follows: Outdoor Silent Mode Setting DIP Switch (S1) DIP1 DIP2 Noise Range Standard mode Low noise mode medium noise mode superlow noise mode The default factory setting is ―00‖. On the DIP switch, ―ON‖...
Page 81 Ultra Heat GMV VRF Technical Service Manual COMMISSIONING OPERATION (1) The DIP switch must be set on the master unit. Otherwise, the setting is invalid. On the same refrigerating system, the centralized control address DIP switch (S3) on a non-master unit is invalid, and it is unnecessary to change the settings. (3) The centralized control address DIP switch (S3) on the master unit of a refrigerating system must be set to ―0000X‖, and this system is the master system.
Page 82: System Function Button Operations
Ultra Heat GMV VRF Technical Service Manual COMMISSIONING OPERATION Precautions: ① When the DIP switch setting is not covered in the above scope, a DIP switch setting exception fault may occur. ② A module must be set to master unit status, and only one module can be set to master unit status in each refrigerating system.
Page 83 Ultra Heat GMV VRF Technical Service Manual COMMISSIONING OPERATION 3.2.1 Introduction to function buttons  When function buttons are used to set functions for outdoor unit, the cover of electric box and panel must be assembled well. Setting can only be done through the maintenance window. Otherwise, electric shock may occur.
Page 84: Function Setting Operations
Ultra Heat GMV VRF Technical Service Manual COMMISSIONING OPERATION  If above function settings are incorrect, unit will run abnormal and compressor may even be damaged. 3.3 Function Setting Operations Step 1: Open the commissioning window of the master unit panel. Step 2: Power on the entire unit.
Page 85 Ultra Heat GMV VRF Technical Service Manual COMMISSIONING OPERATION For example, if A8 function is selected in step 5, then press "SW2 (+)" or "SW3 (-)" to set data (LED3). The master unit is displayed as follows: LED1 LED2 LED3 Function Code Display Mode Confirmation...
Page 86: Basic Operations For Engineering Commissioning
Ultra Heat GMV VRF Technical Service Manual COMMISSIONING OPERATION Middle pressure 0.01MPa If LED2 shows 2 and LED3 shows 80, it means high High pressure 0.01MPa pressure is 2.80MPa. Online ODU quantity Online IDU quantity NOTE: On the master unit, press "SW5" to return to the upper level if there are two levels of menu. And press "SW5"...
Page 87 Ultra Heat GMV VRF Technical Service Manual COMMISSIONING OPERATION LED1 LED2 LED3 Function Code Display Mode Confirmation Display Mode Current Data Display Mode Blinking Blinking For example, if A1 function is selected in step 5, then press "SW2 (+)" or "SW3 (-)" to set data (LED3).
Page 88: Part 2 Commissioning Process
Ultra Heat GMV VRF Technical Service Manual COMMISSIONING OPERATION PART 2 COMMISSIONING PROCESS NOTICE！ ① It is forbidden to directly connect the compressor with power supply and forcibly power it on during commissioning and maintenance. ② Engineering commissioning operations must be performed on the Ultra Heat GMV serial unit. Otherwise, the unit cannot properly run.
Page 89: Engineering Commissioning Procedures
(1) Make sure that the following tools or instruments are prepared before commissioning. (2) Make sure that the commissioning software is correct before commissioning. (3) The professional aftersales commissioning software provided by GREE should be used for commissioning of GREE VRF system.
Page 90 Ultra Heat GMV VRF Technical Service Manual COMMISSIONING OPERATION (2) Check system refrigerants before startup Before the system is started, connect the liquid-tube valve of ODU with a high pressure gauge and the gas-tube valve of ODU with a low pressure gauge, and then read their values. In this case, high pressure and low pressure of the system should be in balance status, and the difference between the saturation temperature corresponding to the balanced pressure value and the environment temperature (the higher in outdoor and indoor temperatures is taken as environment temperature) should not be...
Page 91 Ultra Heat GMV VRF Technical Service Manual COMMISSIONING OPERATION The air conditioning unit works at a current much larger than the rated current (the working current changes in a large scope in different conditions). The power grid provides unstable voltages and the line power factor decreases.
Page 92 Ultra Heat GMV VRF Technical Service Manual COMMISSIONING OPERATION code ‖U3‖ should disappear. 3.2.4 Communication system check (1) The following communication contents must be checked again before commissioning: (2) Communication cables cannot be laid out in the same trough as power cables. Communication cables should be independently laid out in hard fire-resistant PVC tubes.
Page 93: Commissioning Operation
Ultra Heat GMV VRF Technical Service Manual COMMISSIONING OPERATION Does the wall thickness of copper tubes meet design requirements? Are disperse pipes horizontal or vertical? Does the diameter of cables connected with IDUs and ODUs comply with unit design requirements? Do the circuit breaker and leakage switch comply with unit design requirements? Is the spacing between the power cable and the TV set larger than 1 m? Do communication cable materials comply with unit design requirements?
Page 94 Ultra Heat GMV VRF Technical Service Manual COMMISSIONING OPERATION Cooling mode when the outdoor environment temperature is higher than 20° C（68℉）. Heating mode when the outdoor environment temperature is lower than 20° C（68℉）. (3) Before starting commissioning, make sure again that stop valves of all basic modules of the ODU have been completely opened.
Page 95 Ultra Heat GMV VRF Technical Service Manual COMMISSIONING OPERATION The unit has been set in debugging operation status of charging refrigerant amount automatically. (Reserved function) Blink Ready for units to start debugging. 08_Confirm The unit start up by charging debugging refrigerant amount manually.
Page 96 Ultra Heat GMV VRF Technical Service Manual COMMISSIONING OPERATION If unit have some errors, progress 01 will show the following errors: —— Debugging Code Progress Code Status Code LED1 LED2 LED3 Meaning Progress Display Display Display Code Code Code status status status System doesn’t have master unit.
Page 97 Ultra Heat GMV VRF Technical Service Manual COMMISSIONING OPERATION —— Debugging code Progress code Status code Progress LED1 LED2 LED3 Code Display status Code Display status Code Display status Quantity of 03_Confirm the Light Light connected blink quantity of IDUs IDUs If the quantity displayed is the same with actual quantity, then press SW4 confirmation button on the master unit to confirm it.
Page 98 Ultra Heat GMV VRF Technical Service Manual COMMISSIONING OPERATION If the refrigerant quantity inside the system meets the requirement of operation startup, system will display as below and start next progress. —— Debugging code Progress code Status code LED1 LED2 LED3 progress Code...
Page 99 Ultra Heat GMV VRF Technical Service Manual COMMISSIONING OPERATION Code Display status code Display status Code Display status 08_Confirm Light Light Blink debugging startup If it’s confirmed, press SW4 confirmation button. And if AE has been chosen in step 12, unit will display as below and start next progress.
Page 100 3.3.2.2 Commissioning through Commissioning Software Step 1: Install commissioning software to the computer and connect monitoring communication cables (for details about the operation method, see the "GREE VRF Commissioning Software" section). Step 2: Completely cover the front panel of ODU.
Page 101 Ultra Heat GMV VRF Technical Service Manual COMMISSIONING OPERATION For the phase with "confirm" displayed, a manual confirmation is required for entering the next commissioning step. The number of commissioning units is displayed in "2 ODU Module quantity confirm" and "3 IDU quantity confirm"; the preheating period is displayed in ―5 Compressor preheat Confirm").
Page 102 Ultra Heat GMV VRF Technical Service Manual COMMISSIONING OPERATION If unit has some troubles, then commissioning is not passed on the phase and troubleshooting is required (after troubleshooting, the unit automatically enters the next step). For example the figure below in step 1 displays some malfunctions detected on this phase.
Page 103 Ultra Heat GMV VRF Technical Service Manual COMMISSIONING OPERATION Commissioning steps 11 is reserved. Steps 9 and 10 are parallel steps (one of the two steps will be selected according to the actual unit). At last, engineering commissioning is completed when " "...
Page 104 Ultra Heat GMV VRF Technical Service Manual COMMISSIONING OPERATION Note: During commissioning, users must listen to the operating sound of both outdoor and indoor fans and compressors to check for exceptions. 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 105 Ultra Heat GMV VRF Technical Service Manual MAINTENANCE CHAPTER 4 MAINTENANCE...
Page 106: Chapter 4 Maintenance
Ultra Heat GMV VRF Technical Service Manual MAINTENANCE CHAPTER 4 MAINTENANCE PART 1 FAILURE CODE TABLE 1 SYSTEM FAILURE CODE TABLE Content symbol Division symbol Abnormal Auxiliary Freeze Malfunction of Protection of Water-full power supply heating prevention indoor fan protection for wired protection protection...
Page 107 Ultra Heat GMV VRF Technical Service Manual MAINTENANCE Content symbol Division symbol For single For single control over control over Power supply Alarm due to No main IDU multiple units, multiple units, is insufficient bad air quality number of IDU IDU series is is inconsistent inconsistent...
Page 108 Ultra Heat GMV VRF Technical Service Manual MAINTENANCE Malfunction of Setting Malfunction of Malfunction of upper water Malfunction of capacity of Malfunction of inlet tube air outlet temperature backwater DIP switch indoor CO2 temperature temperature sensor of temperature code is sensor sensor of sensor...
Page 109: Odu Leds Table
Ultra Heat GMV VRF Technical Service Manual MAINTENANCE Outdoor ambient temperature is beyond normal range Malfunction of Malfunction of Malfunction of Malfunction of exit casing top inlet tube casing top tube temperature temperature temperature temperature sensor sensor of mode sensor of sensor of mode of compressor 1 exchanger...
Page 110 Ultra Heat GMV VRF Technical Service Manual MAINTENANCE Indoor unit 9 Malfunction of outdoor ambient temperature sensor High-pressure switch protection Drive charging circuit Indoor unit 10 Malfunction of outdoor defrosting temperature sensor malfunction of compressor Indoor unit 11 Malfunction of suction temperature sensor AC current protection Indoor unit 12 Malfunction of sub-cooler liquid tube temperature sensor...
Page 111 Ultra Heat GMV VRF Technical Service Manual MAINTENANCE Protection of fan AC current Phase-lacking of fan Protection of compressor AC current Phase-lacking of compressor Protection of PFC AC current Phase-lacking of PFC Phase-reversed of PFC...
Page 112: Part 2 Exceptions And Troubleshooting
Ultra Heat GMV VRF Technical Service Manual MAINTENANCE PART 2 EXCEPTIONS 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: C01 Indoor project number and fault enquiry NOTE1: If the enquired IDU is normal, no fault code will be displayed in the temperature area;...
Page 113: Exceptions Analyzing And Troubleshooting
Ultra Heat GMV VRF Technical Service Manual MAINTENANCE 3 seconds. NOTE2: Press the ―ON/OFF‖ button on the interface of IDU project number and fault enquiry to exist the parameter enquiry interface. 2 EXCEPTIONS ANALYZING AND TROUBLESHOOTING 2.1 Form Analyzing Fault Fault Possible reasons Solution...
Page 114 Ultra Heat GMV VRF Technical Service Manual MAINTENANCE ODUs are poorly connected. 4) The control board is faulty. 1) The S7 dial switch of the ODU is 1) Switch the S7 dial switch of an ODU to 00; not switched to 00. No master ODU 2) Replace the main board or switch an ODU's S7 2) The S7 dial switch of the ODU is...
Page 115: Flowchart Analyzing
Ultra Heat GMV VRF Technical Service Manual MAINTENANCE Compressor drive 1) The compressor drive board is current check circuit 1) Replace the compressor drive board. faulty. fault 1) Is the voltage of the input power Compressor drive cable of the whole system lower 1) Elevate the voltage of the input power cable to recharging circuit than 60 V;...
Page 116 Ultra Heat GMV VRF Technical Service Manual MAINTENANCE...
Page 117 Ultra Heat GMV VRF Technical Service Manual MAINTENANCE (2) System high pressure protection (E1)
Page 118 Ultra Heat GMV VRF Technical Service Manual MAINTENANCE (3) System low pressure protection (E3)
Page 119 Ultra Heat GMV VRF Technical Service Manual MAINTENANCE (4) System refrigerant lacking protection (U4)
Page 120 Ultra Heat GMV VRF Technical Service Manual MAINTENANCE (5) Indoor unit anti-freezing protection (L5) (6) Indoor unit water overflow protection (L3)
Page 121 Ultra Heat GMV VRF Technical Service Manual MAINTENANCE (7) Temperature sensor fault (8) Pressure sensor fault...
Page 122 Ultra Heat GMV VRF Technical Service Manual MAINTENANCE (9) Analyzing of drive control system faults When the unit fails and halts, first check the two-digit nixie tube of the main board and fault table to find out the specific fault. Then check and solve the fault according to the following methods. 1) Communication failure between the compressor's drive board and control board (outdoor fault...
Page 123 Ultra Heat GMV VRF Technical Service Manual MAINTENANCE 2) Faults in the current detection circuit drive of compressor (ODU fault PC) and out-of-step protection of compressor (ODU fault P9) 3) AC over-current protection (ODU fault P5) and IPM module over-current protection faults (ODU fault P6) Attachment: How to check whether the IPM module is damaged a.
Page 124 Ultra Heat GMV VRF Technical Service Manual MAINTENANCE b. Drive board method: Use the black probe of the multi-meter to touch the place marked by P in the follow picture and the red probe to touch places marked by U, V and W respectively and record readings of the multi-meter.
Page 125 Ultra Heat GMV VRF Technical Service Manual MAINTENANCE PFC board 4) Variable-frequency compressor drive board IPM over-temperature fault (ODU fault P8)
Page 126 Ultra Heat GMV VRF Technical Service Manual MAINTENANCE 5) Recharging circuit faulty of the variable-frequency compressor drive board (ODU fault PF) 6) High voltage protection for the DC bus of the variable-frequency compressor's drive board (ODU fault PH)
Page 127 Ultra Heat GMV VRF Technical Service Manual MAINTENANCE 7) Low voltage protection for the DC bus of the variable-frequency compressor's drive board (ODU fault PL)
Page 128: Part 3 Key Parts Maintenance
Ultra Heat GMV VRF Technical Service Manual MAINTENANCE PART 3 KEY PARTS MAINTENANCE 1 CAUTIONS ON CONTROLLER REPLACEMENT 1.1 Cautions on IDU AP1 Replacement Before replacing IDU AP1, determine the module is a master IDU or a slave IDU. For heat recovery VRF, there is no master IDU.
Page 129 Ultra Heat GMV VRF Technical Service Manual MAINTENANCE 1.1.3 Cautions on replacement of master IDU AP1 If the AP1 of the master IDU needs to be replaced, after the IDU is powered on, ―No master IDU (L7)‖ or ―Project number conflict (C5)‖ alarm may be reported. (1) Troubleshoot for ―no master IDU (L7)‖...
Page 130: Cautions On Wired Control Replacement
Ultra Heat GMV VRF Technical Service Manual MAINTENANCE TIP: If there are N units within the network, the units should be numbered from N+1. Special situation: In some cases, the created project number is identical to that of a unit within the network. In this case, you can use the ―one-key IDU project number reset‖...
Page 131: Compressor Replacement And Cautions
Ultra Heat GMV VRF Technical Service Manual MAINTENANCE After setting, the LCD displays the icon, as shown in the figure below. NOTE: All wired controls are set to master wired controls by default. (4) If the AP1 of the master IDU is replaced, Reset the master IDU through the wired control;...
Page 132 Ultra Heat GMV VRF Technical Service Manual MAINTENANCE NOTE: You can infer from the preceding figures the current of the compressors operating at other frequency bands. Step 2: Check whether the compressor sounds sharp or rubs. Compare the sound of the faulty compressor with that of normal ones.
Page 133 Ultra Heat GMV VRF Technical Service Manual MAINTENANCE Electric expansion valve Electric expansion valve of subcooler Description of electric expansion valve: (2) Four-way valve: While this valve is normally running, the four copper pipes connected to it will suffer different temperature. When a unit switches to act the valve, you will feel obvious vibration and hear sound.
Page 134 Ultra Heat GMV VRF Technical Service Manual MAINTENANCE 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 135: Compressor Replacement
Ultra Heat GMV VRF Technical Service Manual MAINTENANCE 2.1.2 Precondition: units cannot be normally started Step 1: Disconnect the power supply of the units and open the electric junction box of the compressor to see whether wiring of the compressor is intact. Step 2: Measure the resistance between two wiring terminals (U, V, W).
Page 136 Ultra Heat GMV VRF Technical Service Manual MAINTENANCE 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. The removed electric box must be protected for dustproof and waterproof purposes.
Page 137 Ultra Heat GMV VRF Technical Service Manual MAINTENANCE After the compressor and oil separator are removed, check oil quality. If oils are contaminated, replace the compressor, oil separator, and gas/liquid separator. If oil changes to black, check oils of other modular units. The check procedure is similar to the preceding. Note: Before replacing the faulty compressors, make sure to block their openings with tapes.
Page 138 Ultra Heat GMV VRF Technical Service Manual MAINTENANCE Use a glass container to hold the liquid. Check liquid impurities and colors and block the container for further factory inspection. Note: If the compressor needs replacement, the gas/liquid separator needs replacement as well, regardless whether the separator contains impurities or has faults or not.
Page 139 Ultra Heat GMV VRF Technical Service Manual MAINTENANCE Step 6: Clear pipeline system. Check pipelines for abnormalities. Charge nitrogen into the main pipeline and clear the pipeline system. (1) Clear oil balance pipe. (2) Clear oil return pipe. (3) Clear liquid pipe filters.
Page 140 Check the rubbers for oil separator, gas separator, and drying filter. If they are lost during transportation, cover the parts with tape to keep the compressor dry and airtight inside. Note: Compressor lubricant must be kept completely airtight. GREE compressors use special lubricant FV50S whose moisture absorption capability is high. Requirements on air-tightness of these compressors are higher.
Page 141 Ultra Heat GMV VRF Technical Service Manual MAINTENANCE well. This is to avoid abnormality from happening inside the gas/liquid separator, and affecting system safety and reliability. Put the gas/liquid separator on a chassis and connect the inlet pipe of the gas/liquid separator with the outlet pipe.
Page 142 Ultra Heat GMV VRF Technical Service Manual MAINTENANCE 1、Weld the inlet 1、Weld the inlet of compressor 1. of compressor 2. 2、 Weld the outlet of 2、 Weld the outlet of compressor 1. compressor 2. 3 、Weld the middle 3 、Weld the middle inlet of compressor 1.
Page 143 (6) After a required amount of lubricant is added, close the oil checking valve to ensure tightness. Note: Lubricant is of great importance to the normal running of compressors. You should follow Gree’s requirement to add qualified lubricant of the specified trademark and ensure properness of fill amount.
Page 144 Ultra Heat GMV VRF Technical Service Manual MAINTENANCE Step 13: Vacuum-pump. After lubricant is added, keep on extracting air through a vacuum pump till the internal pressure reaches the absolute pressure 0kgf/cm2 and the pressure gauge reads -1 kgf/cm2. This is to ensure that moistures inside the pipeline system are completely vaporized.
Page 145: Cautions On Compressor Drive Board And Pfc Board Replacement
Ultra Heat GMV VRF Technical Service Manual MAINTENANCE 3 CAUTIONS ON COMPRESSOR DRIVE BOARD AND PFC BOARD REPLACEMENT (1) Disconnect the power supply of the system. Set a multimeter to the AC voltage gear and measure voltage between two of the lines (L1, L2, L3, and N). The measuring result should be 0 V (sometimes, multimeters may be faulty and read false values).
Page 146 Ultra Heat GMV VRF Technical Service Manual MAINTENANCE Drive board (3) Disconnect all lines of the PFC board, including: communication line between the PFC and the drive; output 18 and 7.5 VDC connecting with compressor drive board; anode P; cathode N; output 450 VDC;...
Page 147 Ultra Heat GMV VRF Technical Service Manual MAINTENANCE PFC board Drive board (4) Loosen the screws on the compressor drive board and PFC board, as shown in the figure below:...
Page 148 Ultra Heat GMV VRF Technical Service Manual MAINTENANCE PFC board Drive board (5) Replace the compressor drive board and PFC board. Before the replacement, apply some silicone tape onto the IPM module.
Page 149 Ultra Heat GMV VRF Technical Service Manual MAINTENANCE (6) Install a new compressor drive, screw and wire it. PFC board...
Page 150: Assembling And Disassembling Key Parts Of Odus
Ultra Heat GMV VRF Technical Service Manual MAINTENANCE Drive board 4 ASSEMBLING AND DISASSEMBLING KEY PARTS OF ODUS Compressor Precondition: No refrigerant exists in the pipeline system and the power supply has been disconnected Step Diagram Operation Procedure ●Use a screwdriver to unscrew the upper and lower front panels.
Page 151 Ultra Heat GMV VRF Technical Service Manual MAINTENANCE ●Disconnect internal and external connecting lines of the electric box. 2. Remove the electric box. ●Protect the internal parts during the disassembly. ●Remove the sound-proof sponge from the compressor. 3. Disconnect the power ●Use a screwdriver to unscrew the power line.
Page 152 Ultra Heat GMV VRF Technical Service Manual MAINTENANCE ●Remove the compressor from the chassis. 6. Remove the compressor. ●Put the compressor in a proper position. ●Use a wrench to screw the nuts on the 7. Install a new compressor compressor. on the chassis.
Page 153 Ultra Heat GMV VRF Technical Service Manual MAINTENANCE ●Put the electric box back to original position 10. Fix and wire the electric and screw it. box. ●Connect all lines. ●Check various parts and connecting lines. 11. Check and then install ●If no problem is found, hook the front panels the front panels.
Page 154 Ultra Heat GMV VRF Technical Service Manual MAINTENANCE Use a screwdriver to unscrew accessories of the four-way valve. Remove the accessories. ●Heat the connecting pipes of the four-way valve by acetylene welding and then remove 3.Disassemble the four-way the pipes. valve.
Page 155 Ultra Heat GMV VRF Technical Service Manual MAINTENANCE ●Check various parts and connecting lines. 7. Check and install the ●If no problem is found, hook the front panels front panels. and tighten the screws. Electric expansion valve Precondition: No refrigerant exists in the pipeline system and the power supply has been disconnected Step Diagram Operation Procedure...
Page 156 Ultra Heat GMV VRF Technical Service Manual MAINTENANCE 4. Remove the electric ●Remove the electric expansion valve. expansion valve. ●Weld the connecting pipes with the electric expansion valve. ●Before welding, cover the valve with wet cloth. ●During welding, charge nitrogen into the pipes. 5.
Page 157 Ultra Heat GMV VRF Technical Service Manual MAINTENANCE Oil separator Precondition: No refrigerant exists in the pipeline system and the power supply has been disconnected. Step Diagram Operation Procedure ●Use a screwdriver to unscrew the upper and lower front panels. 1.
Page 158 Ultra Heat GMV VRF Technical Service Manual MAINTENANCE ●Weld the four pipe joints with the oil separator. During welding, charge nitrogen into the pipes. The pressure should be controlled within 5. Install a new oil 0.5± 0.1 kgf/cm (relative pressure). separator.
Page 159 Ultra Heat GMV VRF Technical Service Manual MAINTENANCE ●Disconnect internal and external connecting lines of the electric box. 2. Remove the electric box. ●Protect the internal parts during the disassembly. ●Heat the connecting pipes of the gas/liquid separator by acetylene welding and then 3.
Page 160 Ultra Heat GMV VRF Technical Service Manual MAINTENANCE ●Put the electric box back to original position 6. Fix and wire the electric and screw it. box. ●Connect all lines. ●Check various parts and connecting lines. 7. Check and install the front ●If no problem is found, hook the front panels panels.
Page 161 Ultra Heat GMV VRF Technical Service Manual MAINTENANCE ●Heat the connecting pipes of the heat exchanging board by acetylene welding and then remove the pipes. 3. Disassemble the heat Note: Avoid nearby parts from being burnt exchanging board. during welding. The joints of the board must be welded with copper plated steel.
Page 162: Unit Maintenance
(5) Turn the power switch on 8 hours beforehand to pre-heat the outdoor compressor crankcase before the unit is restarted after being in idle status for a long time. (6) Check ODU installation. If an abnormality is found, please contact GREE’s maintenance center. 5.4 Post-Season Maintenance (1) Disconnect the general power supply.
Page 163: Part 4 Appendixes
Ultra Heat GMV VRF Technical Service Manual MAINTENANCE PART 4 APPENDIXES 1 MINUTES ABOUT A DEBUG SOLUTION CONFIRMATION MEETING Confirming air conditioner debug solution to the *** project Theme: *** Time: *** Place: *** Participants: *** Contents: *** 2 VISUAL INSPECTION CHECKLIST OF THE DEBUG SYSTEM Visual inspection checklist of *** air conditioning equipment Item Problem...
Page 164: Debug Parameter Record List
Ultra Heat GMV VRF Technical Service Manual MAINTENANCE 3 DEBUG PARAMETER RECORD LIST Project Unit model name Debugged Date Total length of General IDU rated ODU rated capacity (kW) refrigerant pipes capacity (kW) Fill amount of Maximum fall of IDUs (m) refrigerant (kg) Debug state: Refrigerating...
Page 165: Common Parameter Lists
Ultra Heat GMV VRF Technical Service Manual MAINTENANCE 4 COMMON PARAMETER LISTS 4.1 R410A Refrigerant Pressure / Saturation Temperature List Corresponding Corresponding Corresponding Temperature Temperature Temperature saturation pressure saturation pressure saturation pressure ℉ ℉ ℉ ° C ° C ° C -45.4 1.54 22.34...
Page 166: Resistance / Temperature Lists Of Temperature Sensors
Ultra Heat GMV VRF Technical Service Manual MAINTENANCE 4.2 Resistance / Temperature Lists of Temperature Sensors 4.2.1 Voltage list of 15 kΩ temperature sensors (including ODU and IDU temperature sensors) Voltage Voltage Voltage kΩ kΩ kΩ ℉ ℉ ℉ ° C °...
Page 167 Ultra Heat GMV VRF Technical Service Manual MAINTENANCE 60.8 22.53 1.319 170.6 2.064 2.901 278.6 0.372 3.22 62.6 21.51 1.356 172.4 1.997 2.912 280.4 0.363 3.222 64.4 20.54 1.393 174.2 1.933 2.923 282.2 0.355 3.224 66.2 19.63 1.429 1.871 2.934 0.346 3.226 18.75...
Page 168 Ultra Heat GMV VRF Technical Service Manual MAINTENANCE 4.2.2 Voltage list of 20 kΩ pipeline temperature sensors (including temperature sensors for defroster, sub-cooler, gas/liquid separator, and IDU suction and discharge pipes) Voltage Voltage Voltage ℉ kΩ ℉ kΩ ℉ kΩ °...
Page 169 Ultra Heat GMV VRF Technical Service Manual MAINTENANCE 42.8 48.42 0.965 273.2 0.5351 3.214 3.481 2.811 44.6 46.11 0.998 0.5219 3.216 159.8 3.364 2.825 46.4 43.92 1.033 276.8 0.509 3.218 161.6 3.252 2.838 48.2 41.84 1.067 278.6 0.4966 3.22 163.4 3.144 2.852 39.87...
Page 170 Ultra Heat GMV VRF Technical Service Manual MAINTENANCE 4.2.3 Voltage list of 50 kΩ discharge temperature sensors (including discharge air temperature sensor) Voltage Voltage Voltage ℉ kΩ ℉ kΩ ℉ kΩ ° C ° C ° C 87.8 37.958 0.688 197.6 4.2044 2.323...
Page 171 Ultra Heat GMV VRF Technical Service Manual MAINTENANCE 44.6 113.37 0.267 264.2 1.522 2.864 154.4 9.1655 1.722 46.4 107.96 0.28 1.485 2.873 156.2 8.9542 1.741 48.2 102.85 0.292 267.8 1.449 2.882 8.5551 1.778 98.006 0.306 269.6 1.4141 2.891 159.8 5.9676 1.806 51.8 93.42...
Page 172: Voltage / Pressure Lists Of Pressure Sensors
Ultra Heat GMV VRF Technical Service Manual MAINTENANCE 4.3 Voltage / Pressure Lists of Pressure Sensors 4.3.1 High-pressure/ middle-pressure sensor (R410A) Temperature Absolute pressure Voltage Temperature Absolute pressure Voltage ℉ ℉ ° C ° C 25.5 0.102 60.8 1300 188.5 -38.2 26.7 0.111...
Page 173 Ultra Heat GMV VRF Technical Service Manual MAINTENANCE 26.6 105.9 0.693 127.4 3300 478.5 3.432 28.4 109.3 0.718 129.2 3374 489.2 3.511 30.2 0.745 3450 500.3 3.592 116.6 0.772 132.8 3528 511.6 3.675 33.8 120.4 0.799 134.6 3606 522.9 3.759 35.6 124.3 0.828...
Page 174 Ultra Heat GMV VRF Technical Service Manual MAINTENANCE 4.3.2 Low-pressure sensor (R410A) Temperature Absolute pressure Voltage Temperature Absolute pressure Voltage ℉ ℉ ° C ° C 0.369 72.8 1.301 -92.2 0.373 75.4 1.337 -90.4 0.377 10.4 1.373 -88.6 0.383 12.2 80.9 1.413 -86.8...
Page 175 Ultra Heat GMV VRF Technical Service Manual MAINTENANCE -25.6 36.3 0.797 75.2 1620 234.9 3.537 -23.8 37.8 0.819 1664 241.3 3.625 39.4 0.841 78.8 1708 247.7 3.713 -20.2 0.863 80.6 1754 254.3 3.805 -18.4 42.8 0.887 82.4 1801 261.1 3.899 -16.6 44.5 0.911...
Page 176: Exploded Views And Spare Part List
Ultra Heat GMV VRF Technical Service Manual MAINTENANCE 5 EXPLODED VIEWS AND SPARE PART LIST Exploded View of GMV-V72W/A-F(U)、GMV-V96W/A-F(U) Spare Part List of GMV-V72W/A-F(U)、GMV-V96W/A-F(U) 1) GMV-V96W/A-F(U) Name of Part Part Code Quantity Name of Part Part Code Quantity Pressure Protect Rear Grill 01574100002 4602000910...
Page 177 Ultra Heat GMV VRF Technical Service Manual MAINTENANCE 4-Way Valve 072007000003 Main Board 300027060034 One way Valve 07335210 Electric Box Assy 100002060349 Nozzle for Adding 06120012 Filter Board 300027000260 Freon Nozzle for Adding 061200101 Terminal Board 42018000558 Freon Fusible plug 06332200001 Insulation Gasket 70415001...
Page 178 Ultra Heat GMV VRF Technical Service Manual MAINTENANCE 2) GMV-V72W/A-F(U) Name of Part Part Code Quantity Name of Part Part Code Quantity Pressure Protect Rear Grill 01574100002 4602000910 Switch Pressure Protect Coping 01264100074 4602000911 Switch Diversion Circle 10474100002 Strainer 07415200002 Axial Flow Fan 10434100002 Electric Box Assy...
Page 179 Ultra Heat GMV VRF Technical Service Manual MAINTENANCE Magnet Coil Compressor and 09001000164 (electromagnetic 4304000460 Fittings valve) Magnet Coil One Way Valve 07136007 (electromagnetic 4304000457 valve) Magnet Coil One Way Valve 07130101 (electromagnetic 4304000456 valve) Magnet Coil Current Divider 07223439 (electromagnetic 4304000458 valve)
Page 180 Ultra Heat GMV VRF Technical Service Manual REMOTE CONTROL CHAPTER 5 REMOTE CONTROL...
Page 181: Chapter 5 Remote Control
IDUs and ODUs. 2.1 Composition of System Network From the network topology, it can be seen that Gree debugging network is composed of three parts: Control PC part in the monitor room, including Gree Debugger and USB Converter Driver installed in the PCs.
Page 182: Hardware
ME40-00/B 30118000001 into PC recognizable communication mode. VRF Debugger software (USB 362002060005 This disk contains the Gree Debugger. flash disk) A line connecting a PC with the USB data line 40020082 converter over the USB interface. This board serves to connect units with...
Page 183 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.
Page 184: Com Interface Board
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 185 Ultra Heat GMV VRF Technical Service Manual REMOTE CONTROL software package will be installed to the system without extra operation. If it is not the first time to install Gree Debugger, uninstall the old version before installing. 1) Enter installation guide and click acceptance agreement.
Page 186 Ultra Heat GMV VRF Technical Service Manual REMOTE CONTROL 2) Set software installation catalogue.
Page 187 Ultra Heat GMV VRF Technical Service Manual REMOTE CONTROL 3) Confirm installation. 4) Wait for the completion of installation progress. Prompting intercept information of safety software might pop up at this time, please set the installation procedure as ―released‖ to ensure normal operation of software installation.
Page 188: Software Startup And Shut Down
Ultra Heat GMV VRF Technical Service Manual REMOTE CONTROL 6) After installing the software successfully, click the shortcut of VRF Debugging Software.exe on desktop to enter main interface of debugging software. Notice: After installing the software, if you keep failing to open the above interface, please ask relevant staffs for help.
Page 189: Uninstall Vrf Debugging Software
Ultra Heat GMV VRF Technical Service Manual REMOTE CONTROL Operation for the application of VRF Debugging Software.exe can realize management for software operation status. Choose window for serial port: when serial port is selected, click serial port connection to open it for data connection.
Page 190 Ultra Heat GMV VRF Technical Service Manual REMOTE CONTROL 3) Enter VRF Debugging Software.exe directly and click ―delete‖. 4) Choose delete item 5) Wait for the completion of uninstall.
Page 191: Using Debugger
Ultra Heat GMV VRF Technical Service Manual REMOTE CONTROL 5 USING DEBUGGER 5.1 Manual for Initial Usage...
Page 192: User Log In And Registration
Ultra Heat GMV VRF Technical Service Manual REMOTE CONTROL Log in interface. Please register first if you have no account. After logging in, choose corresponding serial port and click the link to open serial port to accept and display data. Click the network tree on the left page to enter system statistic information page, thus judging the quantity of connected indoor and outdoor units.
Page 193: Main Interface
Ultra Heat GMV VRF Technical Service Manual REMOTE CONTROL 2) Wrong password. 5.3 Main Interface It displays equipment connection information after logging in. Serial port selection frame means choosing the corresponding serial port. Click serial port connection, open the selected COM port, and skip to basic user information interface in default.
Page 194: Debugging Function
Ultra Heat GMV VRF Technical Service Manual REMOTE CONTROL 5.4 Debugging Function 5.4.1 Basic information Click basic information to enter indoor and outdoor unit basic information of VRF unit to check data.
Page 195 Ultra Heat GMV VRF Technical Service Manual REMOTE CONTROL Main indoor unit: Main indoor unit is an indoor unit that decides the operation mode of all indoor units in indoor unit system. Operation mode of either indoor unit in the same indoor unit shall not be conflicting with that of main indoor unit.
Page 196 Ultra Heat GMV VRF Technical Service Manual REMOTE CONTROL 5.4.2 Error protection Click error protection selection to see indoor and outdoor error protection for VRF unit. 5.4.3 ON/OFF status Click ON/OFF status button to enter ON/OFF of VRF indoor and outdoor unit.
Page 197 Ultra Heat GMV VRF Technical Service Manual REMOTE CONTROL For heat recovery unit, long-distance energy conservation, system oil balance, engineering debugging entry mark and engineering debugging allowance setting status are reserved. 5.4.4 Indoor unit control The left page is selection method for the equipment. The user can use network tree to select realted equipment for controlling, choose the corresponding indoor unit and click it to open the indoor unit control interface.
Page 198 Ultra Heat GMV VRF Technical Service Manual REMOTE CONTROL For heat recovery unit, functions cannot be tested at present or not available include horizontal swing, setting engineering code excursion capacity, indoor unit electronic expansion valve, mode exchanger electronic expansion valve, heating energy efficiency upper limit temperature setting, quick heat energy efficiency temperature upper limit setting, mode exchanger low pressure by-pass valve, order indoor unit clearing engineering code, indoor unit of main mode, inverter electrical heating mark, forcible shutdown for auxiliary heating, eliminate cleaning mark for filter, mode exchanger heating valve,...
Page 199 Ultra Heat GMV VRF Technical Service Manual REMOTE CONTROL mode exchanger gas making bypass valve, mode exchanger low pressure valve, eliminate cleaning mark for filter control function etc. 5.4.5 Unit debugging For the first energization, conduct unit debugging status operation. Click start button, data of debugging status will be confirmed;...
Page 200 Ultra Heat GMV VRF Technical Service Manual REMOTE CONTROL Click debugging completed item twice to terminate unit debugging course and empty the information on debugging procedure. 4) Debugging procedure The debugging software is used to receive relevant information sent by master control. The debugging function is managed by master control program.
Page 201 Ultra Heat GMV VRF Technical Service Manual REMOTE CONTROL Debugging schedule 8: unit startup debugging confirmation; Click CONFIRM to confirm unit startup debugging. Debugging schedule 9: manual charging refrigeration operation phase; According to system ambient temperature, the unit will select manual refrigeration charging operation mode, usually it takes at least half an hour.
Page 202 Ultra Heat GMV VRF Technical Service Manual REMOTE CONTROL 5.4.7 Save path setting for historical data Set save path for historical data of debugging software and record the last path set. 5.4.8 Language switch Language switch function is available. When starting the software, the language will be selected according to language of this system.
Page 203: Data Function
Ultra Heat GMV VRF Technical Service Manual REMOTE CONTROL 5.5 Data Function 5.5.1 Indoor unit history Historical data shall be saved in .xls file under history according the form of local time. It is used to check historical status information of all or designated indoor units. Click HISTORICAL DATA, save all indoor and outdoor units data which the debugging software startup data is connected to current time.
Page 204 Ultra Heat GMV VRF Technical Service Manual REMOTE CONTROL 5.5.2 Outdoor unit history Historical data shall be saved in .xls file under history according the form of local time. It is used to check historical status information of all or designated outdoor units. Click HISTORICAL DATA, save all indoor and outdoor units data which the debugging software startup data is connected to current time.
Page 205: Part 2 Vrf Monitoring System
Ultra Heat GMV VRF Technical Service Manual REMOTE CONTROL PART 2 VRF MONITORING SYSTEM 1 OVERVIEW VRF Monitoring System is a solution for air conditioner automation centralized management based on local area network or internet, which decreases manpower input and saves unit management cost. The user can conduct management operations such as check operation status of air conditioner, unit ON/OFF, temperature setting etc.
Page 206 Ultra Heat GMV VRF Technical Service Manual REMOTE CONTROL...
Page 207 Ultra Heat GMV VRF Technical Service Manual REMOTE CONTROL Network 2 (All indoor units in one system share one electric meter and all outdoor units share one electric meter):...
Page 208 Ultra Heat GMV VRF Technical Service Manual REMOTE CONTROL Network 3 (IF you don’t choose billing function, electric meter cannot be connected and network is followed): L1: L1 as shown in the figure is the CAN1 bus, which is made up of indoor units and outdoor units in the system;...
Page 209: Hardware
Ultra Heat GMV VRF Technical Service Manual REMOTE CONTROL exceeds 100m, please use a repeater to enhance communication; all gateways must be connected to the LAN interface of router. L5: L5 as shown in the figure is the power line; power line shall be arranged strictly according to network 1 or network 2.
Page 210 Ultra Heat GMV VRF Technical Service Manual REMOTE CONTROL (2) Power Supply Interfaces The power input should be 100VAC-240VAC, 50/60Hz. Warning: Do not touch the power input when the gateway is energized. (3) Communication Interfaces ―RS485-3‖: RS485 communication interface; ―RS485-2‖: RS485 communication interface. ―RS485-1‖: RS485 communication interface;...
Page 211 Ultra Heat GMV VRF Technical Service Manual REMOTE CONTROL ―SD‖: SD card interface for program record and upgrade. ―USB‖: USB interface, connectable to USB storage device, USB wireless device, etc., so as to achieve multiple extension functions. ―MICRO‖: MICRO_USB interface, with the same functions as USB interface, adaptable for various USB interface models.
Page 212 Ultra Heat GMV VRF Technical Service Manual REMOTE CONTROL (7) Buttons ―INIT‖: ex-factory settings restore button; hold on pressing it for 10s or hold on pressing it until eight communication indicators light on, then the system will restore ex-factory settings. Restoring ex-factory settings will clear all device information saved in the system, including IDU name, group name, IDU consumed electricity amount, etc.
Page 213 Ultra Heat GMV VRF Technical Service Manual REMOTE CONTROL The Modbus gateway should be located inside the electric cabinet, hung up with the front side facing upwards. See the following figure for the required clearance (only for reference). In the figure, slim dotted line is the communication wire and bold dotted line is the heavy current wire.
Page 214 Ultra Heat GMV VRF Technical Service Manual REMOTE CONTROL (1) Communication system of gateway consists of: 1) Communication between gateway and air conditioner unit Type Length m(feet) Wire size Remarks 1. If the wire diameter is enlarged to 2×AWG16, the total communication line length can reach 800 m (2625 feet).
Page 215 Ultra Heat GMV VRF Technical Service Manual REMOTE CONTROL 1) Communication wire connection between gateway and air conditioning master ODU: Step 1: Confirm the master ODU connecting with each gateway, see ①; the setting way of master ODU can be seen in CHAPTER 3_3_3.1.3 Centralized Control Address DIP Switch (S3); the communication connecting way among air conditioning units and gateway must adopt series connection, see ②.
Page 216: Introduction Of Optoelectronic Isolated Repeater
Ultra Heat GMV VRF Technical Service Manual REMOTE CONTROL Step 2: Connect RS485 interface A and B of the electric meter to RS485-2 interface A2 and B2 of gateway, see ⑥. 3) Communication wire connection between gateway and VRF Monitoring System (PC): Step 1: Prepare a router with DHCP function;...
Page 217 Ultra Heat GMV VRF Technical Service Manual REMOTE CONTROL 2.3.2 Appearance NOTE: Actual product prevails. The picture is for reference only. 2.3.3 Interfaces and LEDs RS485 terminal Power LED Run LED Power line terminal RS485 terminal Interface Name Description Remark Accompanied power Power interface Input AC220V~50HZ;...
Page 218: Software
Ultra Heat GMV VRF Technical Service Manual REMOTE CONTROL R+ R- POWER Data 25mm 94mm R+ R- V+ V- E 72mm 88mm 2.3.5 Cautions on installation  It must be installed indoors. Avoid knock or exposure to sunshine or rain. It is suggested to place in the control room together with the computer.
Page 219: Software Setup And Uninstallation
Ultra Heat GMV VRF Technical Service Manual REMOTE CONTROL Part Name Min. Configuration Recommended Configuration IE 9+, Opera 40+, Firefox 40+, Safari 9+, Browser Chrome40+ Chrome40+ Memory 4 GB or larger 4 GB or larger It is suggested that every 100 sets of devices shall have Hardware 50 GB available 20GB or more space in the disk to ensure sufficient...
Page 220 Ultra Heat GMV VRF Technical Service Manual REMOTE CONTROL Step 4: Choose the file for installing the software. Step 5: Confirm installation. Step 6: Wait for the completion of installation progress. In this case, the security software may...
Page 221 Ultra Heat GMV VRF Technical Service Manual REMOTE CONTROL intercept message. Please set allowing the installation program, to ensure normal installation progress. Step 7: Software has been successfully installed. Step 8: When the software has been installed, land website. If the G module is connected directly to the computer using the network cable, IP address of PC shall be set to 192.168.0.x, with x>2.
Page 222 Ultra Heat GMV VRF Technical Service Manual REMOTE CONTROL 1) If the page indicates to input activation code, please provide the ID code in the page to the supplier to gain corresponding activation code to activate the software. (usually reinstalling the software in the computer can still use the original activation code to activate the software).
Page 223 Ultra Heat GMV VRF Technical Service Manual REMOTE CONTROL 1) Some safety software will intercept the above script, if you use safety software, please discharge the script for operation by yourself. 2) Implementation speed of software script will be affected by the performance of the installed machine at present, if it takes too long, please wait patiently.
Page 224 Ultra Heat GMV VRF Technical Service Manual REMOTE CONTROL Step 3: Enter VRF Monitor System Setup Wizard, Click Next. Step 4: Select Remove option. Step 5: Wait for the completion of uninstallation.
Page 225: Software Initial Usage And Unit Connection
Ultra Heat GMV VRF Technical Service Manual REMOTE CONTROL 3.4 Software Initial Usage and Unit Connection When visiting the software, home page will skip the log in page, input the user name and password to enter the system. NOTE: Official authorization of the software shall be obtained before using it. Please provide the Software ID presented on the page to the supplier to obtain official authorization.
Page 226 Ultra Heat GMV VRF Technical Service Manual REMOTE CONTROL 1) User login: input the default user name: admin, password: superuser, enter the system. 2) User registration: click ―New User Registration‖. User registration interface will pop up, and then input basic user registration information. Click ―New User Registration‖ button; if it is successful, then the new user login system is available.
Page 227 Ultra Heat GMV VRF Technical Service Manual REMOTE CONTROL 1) It is suggested to connect G-modules one by one to the network in order to distinguish them in the system. 2) Please make sure the wire connection of G module, computer, router, exchanger and other related devices is normal.
Page 228: Vrf Monitoring System Debug
If there are conflict IDU engineering numbers (C5), you are advised to manually set them using Gree Debugger or control panel, refer to part 1 engineering debugger_5 ―Using Debugger‖ in chapter 5 remote control. Manual setting is applicable to intra-ODU conflicts only, not affecting numbers of other IDUs.
Page 229: Communication Debug Between Gateways And Electric Meters
Ultra Heat GMV VRF Technical Service Manual REMOTE CONTROL 4.3 Communication Debug between Gateways and Electric Meters Step 1: Set electric meter address. Every electric meter uses different addresses. For Network 1 (The indoor units and outdoor units in one system share one electric meter), the electric meter address must be consistent with ODU CAN2 address, and for Network 2 (All indoor units in one system share one electric meter and all outdoor units share one electric meter), the electric meter address of ODU must be consistent with ODU CAN2 address and the five code of the IDU electric meter address codes is set ―1‖...
Page 230 Ultra Heat GMV VRF Technical Service Manual REMOTE CONTROL Address Setting DIP Switch DIPS Electric Address meter DIP of electric meter DIP of electric meter Step 2: Power off air conditioning units and gateways, electric meters, and then power them on. Step 3: View communication LEDs.
Page 231: Communication Debug Between Gateways And Gree Vrf Monitoring System
Ultra Heat GMV VRF Technical Service Manual REMOTE CONTROL communication lines and DIP settings. 4.4 Communication Debug between Gateways and Gree VRF Monitoring System After installing the software successfully, it is starting with the system by default. If the users need to start up or shut down the software by themselves, they can find the menu of this software in start menu of the system.
Page 232 Ultra Heat GMV VRF Technical Service Manual REMOTE CONTROL Step 4: Enter ―Expert‖ -> ―Project management‖. Click ―Generate Network Tree‖ to generate the tree structure of the connected device in the ―Net tree‖. When the device is severely replaced, go to ―System‖ -> ―Maintenance‖ and click ―Reset System‖. After that we can already use the system to control the machine.
Page 233 Ultra Heat GMV VRF Technical Service Manual REMOTE CONTROL ―Project tree‖ (If a node is selected in the project tree, the new node will be placed under the selected node by default). Fill in the node name and click ―Submit‖ to create a node. After creating a node, select an IDU in the left-hand ―Net tree‖...
Page 234 Ultra Heat GMV VRF Technical Service Manual REMOTE CONTROL Click on the panel to control the machine. Click on the device name to get more machine information and control functions. Step 7: Centralized control. Click "Monitor" -> "Centralized" to enter the centralized control page, select the device to be controlled on the left, select the control command on the right, and click "Send"...
Page 235: Troubleshooting
Ultra Heat GMV VRF Technical Service Manual REMOTE CONTROL 5 TROUBLESHOOTING 5.1 Hardware Faults Symptom Possible Cause Troubleshooting The communications lines are not twisted Replace the communication lines pairs. with twisted pairs. Gateway damages. Replace the damaged gateway. Communication lines interrupt. Weld the interrupted lines.
Page 236 Ultra Heat GMV VRF Technical Service Manual REMOTE CONTROL (with the G module or in the same network under the network card). Solution: Login to the software system into the "System" -> "Settings" in the "Default network adapter interface" Select the correct network card, modify the G module will be on line within 10 seconds. Possible cause: The software automatically adds the Windows Firewall release rule to failure (this problem occurs only in outdated Windwos XP systems, and other issues with this version of Windows have a very low...
Page 237 Ultra Heat GMV VRF Technical Service Manual REMOTE CONTROL 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 238 Ultra Heat GMV VRF Technical Service Manual REMOTE CONTROL ③If the following timeout information is displayed, network fails. Check network information. 5. The total number of online units or the total number of IDU of the G module does not match the installed quantity.
Page 240 Jf00303483...

This manual is also suitable for:

Ultra heat gmv-v72w/a-f Ultra heat gmv-v72w/a-fu Ultra heat gmv-v96w/a-f Ultra heat gmv-v96w/a-fu Cn851w2250 Cn851w2260

Gree Ultra Heat GMV Multi VRF Heat Pump Series Service Manual

Preface

Chapter 1 Introduction to Basic Features of Units

Basic Operating Principle

Internal Piping Design of the Units

Basic Parameters of Odu

Electrical Parameters

Optional Accessories

Basic Requirement for Pipe Connection

Precautions on Refrigerant Leakage

Unit Operating Temperature

Chapter 2 Installation

Part 1 Engineering Installation Preparation

Installation Safety

Importance of Installation Engineering

Cooperation between Different Professions

Onsite Review of Design Drawing

Construction Organization Process

Part 2 Material Selections

Requirement for Selecting Construction Materials

Requirement for Selecting Major Materials

Part 3 Installation Space Requirements

Place Selection for Installing Odu

Odu Dimensions and Installation Hole Size

Installation Space Requirement for Odu

Part 4 Requirements on Foundation Installation

Odu Foundation

Odu Fixing

Vibration Reductions for Odu

Part 5 Piping Connection

Schematic Diagram of Piping Connection

Schematic Diagram of Piping Sequence

Allowable Pipe Length and Drop Height Among Idu and Odu

Fitting Pipe between Odu and the First Manifold

Part 6 Pipe Installation and Insulation

Pipe Installation for the Cooling System

Pipe Installations for the Condensate Water System

Insulation System

Part 7 Electric and Controller Installation

Precaution

Installation of the Power Cable

Installation of the Communication System

Part 8 Vacuumization and Desiccation for the Refrigerant System

Air-Tightness Test

Vacuumization and Desiccation for the System

Part 9 Refrigerant Perfusion

Calculation Method for Perfusing Refrigerant

Method for Perfusing Refrigerant

Chapter 3 Commissioning Operation

Part 1 Security Requirements

Precautions for Construction

Precautions for the Use of Refrigerants

Function Settings of Odus

Part 2 Commissioning Process

Necessity of Vrf Engineering Commissioning

Required Files and Tools for Engineering Debugging

Engineering Commissioning Procedures

Chapter 4 Maintenance

Part 1 Failure Code Table

System Failure Code Table

Odu Leds Table

Part 2 Exceptions and Troubleshooting

How to Locate a Faulty Idu Promptly

Exceptions Analyzing and Troubleshooting

Part 3 Key Parts Maintenance

Cautions on Controller Replacement

Compressor Replacement and Cautions

Cautions on Compressor Drive Board and Pfc Board Replacement

Assembling and Disassembling Key Parts of Odus

Unit Maintenance

Part 4 Appendixes

Minutes about a Debug Solution Confirmation Meeting

Visual Inspection Checklist of the Debug System

Debug Parameter Record List

Common Parameter Lists

Exploded Views and Spare Part List

Chapter 5 Remote Control

Part 1 Engineering Debugger

Overview

System Networking