Page 1 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL T1/R410A /50-60Hz І (GC201508 -...
Page 2: Table Of Contents
Contents PREFACE ..................................1 CHAPTER 1 INTRODUCTION TO BASIC FEATURES OF UNITS..............1 I. B ............................ 1 ASIC PERATING RINCIPLE II. I ........................2 NTERNAL IPING ESIGN OF THE NITS III. B ........................... 6 ASIC ARAMETERS OF ............................9 IV. E LECTRICAL ARAMETERS ............................
Page 3 PART 9: REFRIGERANT PERFUSION..........................75 I. C ..................75 ALCULATION ETHOD FOR ERFUSING EFRIGERANT II. M ....................... 76 ETHOD FOR ERFUSING EFRIGERANT CHAPTER 3 COMMISSIONING OPERATION ..................... 78 PART 1 SECURITY REQUIREMENTS ..........................78 I. P ......................... 78 RECAUTIONS FOR ONSTRUCTION II.
Page 4: Preface
GMV5 DC 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: Internal Piping Design Of The Units
GMV5 DC INVERTER VRF UNITS SERVICE MANUAL II. Internal Piping Design of the Units 1. Piping Diagram of GMV-224WM/B-X, GMV-280WM/B-X, and GMV-335WM/B-X...
Page 6 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL 2. Piping Diagram of GMV-400WM/B-X and GMV-450WM/B-X...
Page 7 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL 3. Piping Diagram of GMV-504WM/B-X, GMV-560WM/B-X and GMV-615WM/B-X 4. Names and Main Functions of Components Name Main Function Adjusts its own rotational speed based on the actual requirement Compressor of the system to implement capacity control. Maintains a proper oil temperature in the compressor when the Compressor heat tape compressor is in standby status, ensuring the reliability during...
Page 8 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL Equalizes the oil for all modules in the case of excess oil in the Oil equalizing device current module when multiple modules are arranged in parallel, thus ensuring the system reliability. Maintains a proper oil temperature in the compressor when the Heat tape of oil equalizing compressor is in standby status, ensuring the reliability of device...
Page 9: Basic Parameters Of Unit
GMV5 DC INVERTER VRF UNITS SERVICE MANUAL III. Basic Parameters of Unit 1. Basic Parameters of ODU GMV-22 GMV-28 GMV-33 GMV-40 GMV-45 GMV-50 GMV-56 GMV-61 Model 4WM/B- 0WM/B- 5WM/B- 0WM/B- 0WM/B- 4WM/B- 0WM/B- 5WM/B- CN851 CN851 CN851 CN851 CN851 CN851 CN851 CN851 Product Code...
Page 10 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL GMV-1130 GMV-1180 GMV-1235 GMV-1300 GMV-1350 GMV-1410 GMV-1460 Model WM/B-X WM/B-X WM/B-X WM/B-X WM/B-X WM/B-X WM/B-X Refrigeration Capacity HP GMV-280W GMV-280W GMV-335W GMV-280W GMV-504W GMV-560W GMV-615W M/B-X + M/B-X + M/B-X + M/B-X + M/B-X + M/B-X + M/B-X +...
Page 11 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL GMV-1845W GMV-1908W GMV-1962W GMV-2016W GMV-2072W GMV-2128W Model M/B-X M/B-X M/B-X M/B-X M/B-X M/B-X Refrigeration Capacity GMV-280WM/ GMV-280WM/ GMV-280WM/ GMV-280WM/ GMV-280WM/ GMV-615WM/ B-X+ B-X+ B-X+ B-X+ B-X+ GMV-450WM/ GMV-504WM/ GMV-560WM/ GMV-560WM/ GMV-615WM/ +GMV-615WM — Combination Mode /B-X +GMV-560WM...
Page 12: Electrical Parameters
GMV5 DC INVERTER VRF UNITS SERVICE MANUAL IV. Electrical Parameters 1. Power Cable Wire Gauge and Circuit Breaker Selection Circuit Circuit breaker Wire size of breaker capacity for Wire size of combined Model Basic models power supply capacity combined units uni (mm 2.5×5 GMV-224WM/B-X...
Page 13 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL Circuit Circuit breaker Wire size of breaker capacity for Wire size of combined Model Basic models power supply capacity combined units uni (mm 2.5×5+10×5+10× GMV-2072WM/B-X 280+ 560+615+615 25+63+63+63 2.5+10+10+10 5+10×5 2.5×5+10×5+10× GMV-2128WM/B-X 280+615+615+615 25+63+63+63 2.5+10+10+10 5+10×5...
Page 14 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL Electrical Parameters of High-static-pressure Air-duct-type Air Conditioner Circuit Breaker Capacity Minimum Sectional Area Model Power Supply (mm² ) of Grounding Wire GMV-ND56PHS/A-T 220-240V~50Hz/208-230V~60Hz GMV-ND63PHS/A-T 220-240V~50Hz/208-230V~60Hz GMV-ND71PHS/A-T 220-240V~50Hz/208-230V~60Hz GMV-ND80PHS/A-T 220-240V~50Hz/208-230V~60Hz GMV-ND90PHS/A-T 220-240V~50Hz/208-230V~60Hz GMV-ND100PHS/A-T 220-240V~50Hz/208-230V~60Hz GMV-ND112PHS/A-T 220-240V~50Hz/208-230V~60Hz GMV-ND125PHS/A-T...
Page 15 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL maximum unit power (maximum current). （2）. The power cable specifications in the table are obtained under the condition that the multi-copper core cable (such as YJV copper-core XLPE insulated power cable ) is laid in the wire trough in an exposed manner (the ambient temperature is 40℃...
Page 16 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL 2.1.2 Circuit diagram of GMV-335WM/B-X 2.1.3 Circuit diagram of GMV-400WM/B-X and GMV-450WM/B-X...
Page 17: Optional Accessories
GMV5 DC INVERTER VRF UNITS SERVICE MANUAL 2.1.4 Circuit diagram of GMV-504WM/B-X、GMV-560WM/B-X and GMV-615WM/B-X V. Optional Accessories GMV5 series VRF units support the following optional accessories: Export Model Remark ML01/A Manifold For model selection, refer to Pipe Selection. FQ01A/A, FQ01B/A, FQ02/A,...
Page 18: Basic Requirement For Pipe Connection
GMV5 DC INVERTER VRF UNITS SERVICE MANUAL VI. 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 air pipes, liquid pipes and oil equalizing pipes.
Page 19 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL Note: (1) Functions of oil check valve: During after-sale maintenance, the oil check valve can be used to extract lubricating oil samples, which are further detected to analyze the oil quality in the system. The oil check valve can also serve as the inlet for lubricating oil charging.
Page 20 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL 20.0 54.0 GMV-400WM/B-X 22.5 60.8 GMV-450WM/B-X 25.2 68.0 GMV-504WM/B-X 28.0 75.6 GMV-560WM/B-X 30.8 83.0 GMV-615WM/B-X 34.0 91.8 GMV-680WM/B-X 36.5 98.6 GMV-730WM/B-X 39.3 106.0 GMV-785WM/B-X 42.5 114.8 GMV-850WM/B-X 45.0 121.5 GMV-900WM/B-X 48.0 129.6 GMV-960WM/B-X 50.5 136.4 GMV-1010WM/B-X...
Page 21: Precautions On Refrigerant Leakage
GMV5 series VRF units adopt the R410A refrigerant, which is nonflammable and nontoxic. However, the space for refrigerant leakage must be sufficient to ensure that the refrigerant concentration does not exceed that specified in the safety requirement;...
Page 22: Unit Operating Temperature
GMV5 DC INVERTER VRF UNITS SERVICE MANUAL VIII. Unit Operating Temperature Cooling -5° C ~5 2° C Heating -20° C ~24° C In the case of a full fresh air conditioning IDU, the unit operating temperature is as follows: Cooling 16°...
Page 23 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL Indoor unit model Outdoor unit model GMV-NX280P/A(X3.0)-M GMV-280WM/B-X GMV-NX450P/A(X4.0)-M GMV-450WM/B-X Conenction diagram...
Page 24: Chapter 2 Installation
GMV5 DC INVERTER VRF UNITS SERVICE MANUAL Chapter 2 Installation Part 1 Engineering Installation Preparation I. 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 25 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL The system cannot correctly control the flow allocation; the Incorrect amount of refrigerant is compressor may be operating under over-heating environment or filled. running when the refrigerant flows back to the compressor.. Insufficient refrigerant circulating in the system decreases the cooling performance of the air conditioner.
Page 26: Cooperation Between Different Professions
GMV5 DC INVERTER VRF UNITS SERVICE MANUAL III. 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 27 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL...
Page 28: Onsite Review Of Design Drawing
GMV5 DC INVERTER VRF UNITS SERVICE MANUAL IV. 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.
Page 29: Construction Organization Process
GMV5 DC INVERTER VRF UNITS SERVICE MANUAL V. Construction Organization Process...
Page 30: Part 2 Material Selection
GMV5 DC INVERTER VRF UNITS SERVICE MANUAL Part 2 Material Selection I. 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 31 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL pipe, PP-C pipe, and HDG steel pipe. 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. 3.
Page 32: Part 3 Installation Space Requirement
GMV5 DC INVERTER VRF UNITS SERVICE MANUAL Part 3 Installation Space Requirement I. 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 33 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL Outline and Physical Dimention of GMV-335WM/B-X、 GMV-400WM/B-X and GMV-450WM/B-X unit.
Page 34 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL Outline and Physical Dimention of GMV-504WM/B-X、 GMV-560WM/B-X and GMV-615WM/B-X unit.
Page 35: Installation Space Requirement For Odu
GMV5 DC INVERTER VRF UNITS SERVICE MANUAL III. Installation Space Requirement for ODU 1. If all sides of the ODU (including the top) are surrounded by walls, process according to the following requirements for installation space: Installation space requirement for single-module unit Electric box pipes go out of the electric box from this side...
Page 36 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL Installation space requirements for triple-module unit Electric box pipes go out of the electric box from this side Figure 5 Installation space requirement for quad-module unit...
Page 37 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL Electric box pipes go out of the electric box from this side Figure 6 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 Figure 7.
Page 38 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL...
Page 39 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL 3. Monsoons must be considered during ODU installation. Incorrect Correct Monsoon direction Monsoon direction One side (rear side) of Protective cover Fresh-air suction inlet Return air(rear side) Return air(rear side) The defrosting time is prolonged in this case Return air(rear side) 4.
Page 40 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL 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 41 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL Step 1 Step 2 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 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL unit. (2) Use a steel bar to press tightly the canvas casing (4) around the top case of the unit. Use a hand-operated electric drill to drill holes and fasten the canvas casing onto the unit through steel bar by using tapping screws.
Page 43: Part 4 Requirements On Foundation Installation
GMV5 DC INVERTER VRF UNITS SERVICE MANUAL Part 4 Requirements on Foundation Installation I. 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: A.
Page 44: Odu Fixing
GMV5 DC INVERTER VRF UNITS SERVICE MANUAL II. ODU Fixing Fix the ODU to the foundation with four M12 bolts securely to reduce vibration and noise. III. Vibration Reduction for ODU The ODU must be fixed securely. Apply a thick rubber sheet or corrugated damping rubber pad with thickness of 200 mm or more and width of 100 mm or more between the ODU and the foundation, as shown in the following figures.
Page 45: Part 5 Piping Connection
GMV5 DC INVERTER VRF UNITS SERVICE MANUAL Part 5 Piping Connection Ⅰ. Schematic Diagram of Piping Connection...
Page 46: Ⅱ. Schematic Diagram Of Piping Sequence
GMV5 DC INVERTER VRF UNITS SERVICE MANUAL Ⅱ. Schematic Diagram of Piping Sequence GMV-224WM/B-X and GMV-280WM/B-X GMV-335WM/B-X , GMV-400WM/B-X and GMV-450WM/B-X...
Page 47 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL GMV-504WM/B-X , GMV-560WM/B-X and GMV-615WM/B-X...
Page 48: Ⅲ. Allowable Pipe Length And Drop Height Among Indoor And Outdoor Units
GMV5 DC INVERTER VRF UNITS SERVICE MANUAL Ⅲ. Allowable pipe length and drop height among indoor and outdoor units Y type branch joint is adopted to connected indoor and outdoor units. Connecting method is shown in the figure below Remark Equivalent length of one Y-type manifold is about 0.5m. L10: Length from the first branch to the farthest IDU;...
Page 49 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL ≤40 Equivalent length from the first branch to the furthest piping (1) L6+L7+L8+L9+j ≤90 —— Outdoor unit at upper(4) Height difference between outdoor ≤90 —— unit and indoor unit Outdoor unit at lower(4) ≤30 ——...
Page 50: Ⅳ. Connection Pipe Among Outdoor Modules
GMV5 DC INVERTER VRF UNITS SERVICE MANUAL Φ25.4 Φ44.5 GMV-1460WM/B-X Φ25.4 Φ44.5 GMV-1515WM/B-X Φ25.4 Φ44.5 GMV-1580WM/B-X Φ25.4 Φ44.5 GMV-1630WM/B-X Φ25.4 Φ44.5 GMV-1685WM/B-X Φ25.4 Φ44.5 GMV-1750WM/B-X Φ25.4 Φ44.5 GMV-1800WM/B-X Φ44.5 Φ25.4 GMV-1845WM/B-X Φ51.4 Φ25.4 GMV-1908WM/B-X Φ25.4 Φ51.4 GMV-1962WM/B-X Φ25.4 Φ51.4 GMV-2016WM/B-X Φ51.4 Φ25.4 GMV-2072WM/B-X...
Page 51 GMV5 DC 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+B≤10m. Pipe connection among ODUs must meet the following requirements: Module pipe interface Inter-module pipeline Piping between modules is under the module pipe Piping between modules is at the same level connector and increases upwards with an angle...
Page 52: Ⅴ. Fitting Pipe Between Outdoor Unit And The First Manifold
GMV5 DC INVERTER VRF UNITS SERVICE MANUAL Ⅴ. Fitting pipe between Outdoor Unit and the First Manifold (1). For single module system, pipe size (between outdoor unit and the first manifold)is determined by that of outdoor unit. Pipe size of basic outdoor module is shown as follows: Pipe between ODU and the first branch of IDU Basic Module Gas Pipe(mm)
Page 53 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL Pipe between module and branch of ODU Basic Module Gas Pipe(mm) Liquid Pipe(mm) Φ19.05 Φ9.52 GMV-224WM/B-X Φ22.2 Φ9.52 GMV-280WM/B-X Φ25.4 Φ12.7 GMV-335WM/B-X Φ25.4 Φ12.7 GMV-400WM/B-X Φ28.6 Φ12.7 GMV-450WM/B-X Φ28.6 Φ15.9 GMV-504WM/B-X Φ28.6 Φ15.9 GMV-560WM/B-X Φ28.6 Φ15.9...
Page 54 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL Pipe between ODU and the first branch of IDU Basic Module(single module) Gas Pipe(mm) Liquid Pipe(mm) Φ19.05 Φ9.52 GMV-224WM/B-X Φ22.2 Φ9.52 GMV-280WM/B-X Φ25.4 Φ12.7 GMV-335WM/B-X Φ25.4 Φ12.7 GMV-400WM/B-X Φ28.6 Φ12.7 GMV-450WM/B-X Φ28.6 Φ15.9 GMV-504WM/B-X Φ28.6 Φ15.9...
Page 55 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL Ф31.8 Ф19.05 GMV-850WM/B-X Ф31.8 Ф19.05 GMV-900WM/B-X Ф31.8 Ф19.05 GMV-960WM/B-X Ф38.1 Ф19.05 GMV-1010WM/B-X Ф38.1 Ф19.05 GMV-1065WM/B-X Ф38.1 Ф19.05 GMV-1130WM/B-X Ф38.1 Ф19.05 GMV-1180WM/B-X Ф38.1 Ф19.05 GMV-1235WM/B-X Ф38.1 Ф19.05 GMV-1300WM/B-X Ф38.1 Ф19.05 GMV-1350WM/B-X Ф44.5 Ф22.2 GMV-1410WM/B-X Ф44.5 Ф22.2 GMV-1460WM/B-X...
Page 56 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL Total capacity of downstream indoor unit(s) C R410A Refrigerant System Model (kW) C≤20.0 FQ01A/A 20.0 ＜C≤30.0 FQ01B/A Y-type Manifold 30.0＜C≤70.0 FQ02/A 70.0＜C≤135.0 FQ03/A 135.0＜C FQ04/A (6). Fitting pipe between manifolds Pipe size (between two manifolds at indoor unit side) is based on the total capacity of upstream indoor unit(s).
Page 57 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL Pipe between indoor branch and IDU Rated capacity of indoor unit C(kW) Gas Pipe(mm) Liquid Pipe(mm) Φ9.52 Φ6.35 C≤2.8 Φ12.7 Φ6.35 2.8＜C≤5.0 Φ15.9 Φ9.52 5.0＜C≤14.0 Φ19.05 Φ9.52 14.0＜C≤16.0 Φ22.2 Φ9.52 16.0＜C≤28.0...
Page 58: Part 6 Pipe Installation And Insulation
GMV5 DC INVERTER VRF UNITS SERVICE MANUAL Part 6 Pipe Installation and Insulation I. Pipe Installation for the Cooling System 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 59 GMV5 DC 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. If the copper pipe is not used immediately after cut-off, cover it with a sealing cap or adhesive tape.
Page 60 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL The flared opening must be concentric with the main pipe. No eccentricity is allowed. Put the pipe into the root of the pipe expander. Longitudinal cracks cannot be generated. 3. Installation of Refrigerant Pipes 3.1 Operation Sequence The sequence for installing the refrigerant pipe is as follows: Preparing and installing the support, hanger, and bracket –...
Page 61 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL The minimum distance between supports, hangers, and brackets is listed in the table below: External Diameter of the ф≤16 40>ф≥19.05 ф≥40 Pipe (mm) Distance between Horizontal Pipes (mm) 1000 1500 2000 Distance between Vertical Pipes (mm) 1500 2000...
Page 62 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL Equip a pressure regulator valve to the nitrogen cylinder. The nitrogen flow is above 4-6 L/min (pressure of 0.02 to 0.05 MPa) and must be regulated based on the pipe caliber. 3.6 Requirements on Manifold Installation Manifolds are used to divert refrigerant.
Page 63 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 64 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL There must be a secure distance between pipes. Pipes in different types must be fixed separately. 3.8 During refrigerant pipe installation, ensure a distance above 500 mm 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 65: Pipe Installation For The Condensate Water System
GMV5 DC INVERTER VRF UNITS SERVICE MANUAL Stop valve equipped to the outdoor unit for the gas pipe Stop valve equipped to the outdoor unit for the liquid pipe Gas pipe filter Added stop valve for the gas pipe Drier filter for the liquid pipe Added stop valve for the liquid pipe II.
Page 66 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL 2.7 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. 2.8 Equip a steel casing for all pipes which are led through the wall or floor.
Page 67: Insulation System
GMV5 DC INVERTER VRF UNITS SERVICE MANUAL Connector Indoor unit Indoor unit Connector 3.5 During condensate water pipe installation, ensure a distance above 500 mm 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 68 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL 1.3 Procedure of Insulation a. Select insulation materials based on design requirements. b. Wear the insulation sleeve before connecting refrigerant pipes. Users cannot cut the insulation material apart and then wrap up with ties after connecting the pipes by welding. c.
Page 69: Part 7 Electric And Controller Installation
GMV5 DC INVERTER VRF UNITS SERVICE MANUAL Part 7 Electric and Controller Installation I. 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. The power cable and communication cable can be identified in the following ways: Method 1: Use sheaths in different colours.
Page 70 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL 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 71 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL Power cable Power Power terminal block XT1 Power terminal block XT1 Power terminal block XT1 Communication Communication Communication Communication cable terminal block XT2 terminal block XT2 terminal block XT2 Outdoor unit 1 Indoor unit n Indoor unit 2 (master module) Power...
Page 72 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL Use ties (support heads) to fix the communication cable. Use ties (support heads) to fix the Lead the Lead the external power cable. communication power cable cable through through the the hole. hole. Lead the power cable through the hole.
Page 73: Installation Of The Communication System
GMV5 DC INVERTER VRF UNITS SERVICE MANUAL III. Installation of the Communication System The CAN communication network is adopted for GMV5 VRF system. Manual DIP or identification on polarities of the communication power is not required for the IDU. Only the function DIP needs to be set for the ODU.
Page 74 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL Figure 4 Communication cable connection for IDUs and ODUs 3. Communication Cable Connection Method and Procedure A. Communication cable connection between the IDUs and ODUs The communication cable between the IDUs and ODUs is connected via interface D1/D2 on the terminal block XT2.
Page 75 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL Figure 5 Communication cable connection for the single-module system Figure 6 Communication cable connection for the multi-module system Note: a) If there are multiple modules for the modular ODU, the master unit must be the first ODU module on the communication cable and cannot be connected to the IDU.
Page 76: Part 8: Vacuumization And Desiccation For The Refrigerant System
GMV5 DC INVERTER VRF UNITS SERVICE MANUAL d) The communication cable must be long enough to avoid joints. e) Indoor units must be connected in series. The last IDU shall be connected to a matching resistor (placed in the package of the ODU). Part 8: Vacuumization and Desiccation for the Refrigerant System Works for the refrigerant system include cleaning and desiccating the pipes, performing an air-tightness...
Page 77: Vacuumization And Desiccation For The System
GMV5 DC INVERTER VRF UNITS SERVICE MANUAL II. Vacuumization and Desiccation for the System 1. Requirements on the Vacuum Pump The vacuum pump for different refrigerant systems cannot be the same. The ultimate vacuum degree of the vacuum pump should reach -0.1 MPa. The air discharge capacity of the vacuum pump must be greater than 4 L/S.
Page 78: Part 9: Refrigerant Perfusion
GMV5 DC INVERTER VRF UNITS SERVICE MANUAL Part 9: Refrigerant Perfusion I. 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 79: Method For Perfusing Refrigerant
GMV5 DC INVERTER VRF UNITS SERVICE MANUAL (X4.0)-M. The quantity of perfused refrigerant for this module is 0 kg. Therefore, ∑ Quantity of refrigerant perfused for each module (B) = 0 kg Assume that the quantity of refrigerant perfused for the pipe (A) = ∑ Length of the liquid pipe x Quantity of refrigerant perfused for the liquid pipe per meter = 5kg Total quantity of refrigerant perfused for the system (R) = 5+0= 5 kg II.
Page 80 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL m=(m1-m2)+(m3-m4)+…+(mn-1-mn) Quantity of refrigerant to be perfused during running m`=M-m M is the required total quantity 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.
Page 81: Chapter 3 Commissioning Operation
GMV5 DC INVERTER VRF UNITS SERVICE MANUAL Chapter 3 Commissioning Operation Part 1 Security Requirements I. 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. 2.
Page 82 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL only when it is set on the master unit. 2#-6# compressor It is better not to use the emergency Provides aftersales emergency emergency function. Replace operation settings for 2#-6# the compressor at the first time SA3_COMP-E DIP switch compressors.
Page 83 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL non-master unit is invalid, and it is unnecessary to change the settings. 3) The centralized control address DIP switch (SA2_Addr-CC) on the master unit of a refrigerating system must be set to ―00000‖, and this system is the master system. 4) The centralized control address DIP switch (SA2_Addr-CC) on the master unit of other refrigerating systems must be set as follows: Address...
Page 84 GMV5 DC 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. C.
Page 85 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL Once 48 hours are exceeded, the entire unit will be forcibly stopped and the limited operation code ―Ad‖ is displayed on the IDU. I. 1#-6# compressors are defined from right to left facing the front of the unit. 5.
Page 86: (Ii) System Function Button Operations
GMV5 DC INVERTER VRF UNITS SERVICE MANUAL 8. Master Unit Setting DIP Switch (SA8_MASTER-S) The master unit setting DIP switch (SA8_MASTER-S) defines module management of a system. A master unit must be set, and only one master unit can be set in each refrigerating system (in power-off status).
Page 87 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL Function Button Name and Meaning Button Code Function Meaning Indicates the upward selection button. DOWN Indicates the downward selection button. FUNCTION Indicates the function button, used for function settings. CHECK Indicates the query button, used for function query. SKIP Indicates the skip button.
Page 88 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL 2. Introduction to Functions 2.1 List of functions Factory Settings Remark Function Code Function Name Function Meaning Code Meaning Fully or partially recovers refrigerants in a faulty module or IDU pipeline according to the system pressure after Refrigerant automatic startup during...
Page 89 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL Model of Basic Module Maximum Refrigerant Recovery Volume (kg) GMV-224WM/B-X GMV-280WM/B-X GMV-335WM/B-X GMV-400WM/B-X 13.5 GMV-450WM/B-X This function falls into two modes: faulty module refrigerant recovery and IDU pipeline refrigerant recovery. Refrigerant Recovery Refrigerant Recovery Remark Mode Code Mode Name...
Page 90 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL 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 forcible silent mode falls in three categories: Code Silent Mode Noise Degree...
Page 91 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL LED1 LED2 LED3 Function Code Display Mode Current Progress Display Mode Current Status Display Mode Blinking Blinking Blinking Users can select corresponding functions by pressing "SW1 (UP)" or "SW2 (DOWN)" on the master unit, including: LED1 LED2...
Page 92 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL 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: LED1 LED2 LED3 Silent Function Display...
Page 93 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL LED1 LED2 LED3 Function Display ODU Function Mode Display ODU Function Mode Display Code Mode Code Mode Code Mode On the master unit, press "SW6" to return to the upper level (press "SW6" in setting status to return to the upper level;...
Page 94 GMV5 DC 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 95 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL after settings are completed to restore the normal operating status of the unit.)  n3 Forcible defrosting operation settings Step 1: Confirm entering the n3 forcible defrosting operation settings. The master unit is displayed as follows: LED1 LED2...
Page 96 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL follows: LED1 LED2 LED3 Function Code Display Mode Current Progress/Mode Display Mode Current Status Display Mode Blinking Blinking Step 2: Press "SW7" to send the project number offset command. The master module is displayed as follows: LED1 LED2...
Page 97 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL If no quit button operations are performed on the master unit for 30 minutes, the function setting automatically quits and the unit restores the current status. Step 6: If the n9 IDU address query is selected, the display is as follows: LED1 LED2 LED3...
Page 98 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL protection for inverter compressor protection driver Inverter compressor driver IPM Communication failure between the module protection master unit and inverter outdoor fan driver Inverter compressor startup failure Over-high temperature protection for inverter outdoor fan driver module Inverter compressor phase lack Temperature sensor failure of inverter protection...
Page 99 ° C Discharge temperature of compressor ° C Discharge temperature of compressor This parameter is invalid for the ° C GMV5 series. Discharge temperature of compressor This parameter is invalid for the ° C GMV5 series. Discharge temperature of compressor This parameter is invalid for the °...
Page 100 This parameter is invalid for the Inlet-tube temperature of condenser ° C GMV5 series. Note: If a parameter value is negative, LED3 circularly displays the negative code "nE‖ and the numeric value every one second. For example, for -30C, LED3 alternately displays ―nE‖ for one second and then ―30‖...
Page 101 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL ↓ LED1 LED2 LED3 Parameter Code Display Mode Parameter Code Display Mode Parameter Code Display Mode ↓ LED1 LED2 LED3 Parameter Code Display Mode Parameter Code Display Mode Parameter Code Display Mode ↓ LED1 LED2 LED3...
Page 102 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL 4.1 Basic Operations Basic Operations Operation Method Remark Starting Press and hold "SW7" on the engineering master unit for more than five —— commissioning seconds. In this mode, the system does not Press "SW4" and "SW5" detect the communication status Selecting simultaneously in any...
Page 103: Part 3 Commissioning Process
Only a qualified unit can be delivered for use. II. Required Files and Tools for Engineering Commissioning 1. Required Tools for Engineering Commissioning of GREE VRF Inner hexagon spanner Digital thermometer Shifting spanner...
Page 104 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 105 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL 2.4 Electrical System Check Check for high electromagnetic interference, dusts, and acidic or alkaline gas in the unit environment. a. The air conditioning unit can neither share the same power supply system with the equipment containing variable-frequency drives, nor reside near the equipment generating high electromagnetic interference.
Page 106 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL b. Phase sequence check: b1. After powering on the unit, measure the grounded voltage value of N-bit on the power patch panel and the voltage value between every two of L1, L2, and L3 bits. In general, the voltage between N-bit and L1/L2/L3-bit should approach 220 V and the voltage between every two of L1, L2, and L3 bits should approach 380 V.
Page 107 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL 10 Is the total length of pipes less than 1000 m? Is the spacing between the ODU and the first disperse pipe larger than 90 m? If yes, is the corresponding pipe diameter increased? Is the spacing between the IDU and the nearest disperse pipe larger than 10 m? If yes, is the corresponding pipe diameter increased? 13 Does the wall thickness of copper tubes meet design requirements?
Page 108 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL Has the compressor been preheated for more than eight hours? 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°...
Page 109 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL 6) The following table describes progress display of each phase during commissioning: Progress Description for Commissioning Phases Commissioning —— Code Progress Code Status Code LED1 LED2 LED3 Progress Display Display Display Code Status Code Status Code...
Page 110 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL IDUs and ODUs. The system completes detection and automatically enters the next step. The system detects 06_Internal Corresponding component failure of component fault code ODU. detection for The system detects that basic no ODU component fails modules and automatically enters the next step.
Page 111 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL refrigerant perfusion commissioning operation status. —— —— —— —— —— —— No meaning. —— —— —— —— —— —— No meaning. The system is in cooling-mode commissioning operation (the system automatically selects the commissioning operation mode without needing manual settings).
Page 112 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL seconds later), and "U8" (two seconds later). The unit has completed 17_Commiss commissioning and in ioning standby status. LED1 completion displays the module status address; LED2 and 01-04 LED3 display "OF". Note: In commissioning status, press and hold "SW3" and "SW4" simultaneously for more than five seconds to enter the no-wired-controller commissioning mode.
Page 113 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL Step 6: Find the module with its address being ―01‖, which is the master unit. On the master unit, press and hold "SW7" for more than five seconds to enter unit commissioning. Step 7: Wait for the unit to automatically operate commissioning steps 01 and 02. Exception 1: If the master unit is incorrectly set in step 01, the following faults are displayed in step 01: Commissioning Code...
Page 114 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL If the displayed quantity is inconsistent with the number of actually connected modules, check whether communication cables are correctly connected between modules in power-off status. Then perform commissioning again. Note: It is very important to correctly confirm the number of ODUs. If the confirmed quantity is inconsistent with the actual quantity, the system may improperly run.
Page 115 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL ODUs. The rated capacity ratio is over-low between indoor and ODUs. For details about the above troubleshooting method, refer to the "Troubleshooting Method" part. Step 10: Unit commissioning step 06 is component detection for ODU. If no exception is detected, the main board is displayed as follows and the unit automatically enters the next commissioning step.
Page 116 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL displayed as follows and the unit automatically enters the next step. Commissioning Code Progress Code Status Code LED1 LED2 LED3 Progress Display Display Display Code Status Code Status Code Status Meaning The system detects that the compressor 08_Compresso preheating period is...
Page 117 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL detection If the master unit is displayed as follows, it is required to check again whether the ODU valves are completely opened. Commissioning Code Progress Code Status Code LED1 LED2 LED3 Progress Display Display Display Code...
Page 118 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL Commissioning Code Progress Code Status Code LED1 LED2 LED3 Progress Display Display Display Code Status Code Status Code Status Meaning The system is in cooling-mode commissioning operation (the system automatically selects the commissioning operation mode without needing manual settings).
Page 119 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL The system detects pipe failure of IDU. "XXXX" indicates the project number of the faulty IDU. The fault code "U8" is displayed after three seconds. For example, if a U8 fault occurs on IDU 100, LED3 will circularly display "01", "00"...
Page 120 3.2.2 Commissioning Through the Commissioning Software Step 1: Install commissioning software to the computer and connect monitoring communication cables (for details about the operation method, see the "GREE Central Air Conditioning Commissioning Software" section). Step 2: Completely cover the front panel of ODU.
Page 121 GMV5 DC 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. Click "Close" to close the information (the number of commissioning units is displayed in "3 Confirm ODU Basic Module NO."...
Page 122 GMV5 DC 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 123 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL Commissioning steps 11, 13, and 14 are reserved. Steps 13, 14, 15, and 16 are parallel steps (one of the four steps will be selected according to the actual unit). At last, engineering commissioning is completed when " "...
Page 124 GMV5 DC 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. 3.4 Operations after Commissioning Sort and save data. Make detailed records of exceptions and troubleshooting methods during commissioning for later maintenance and query.
Page 125: References For Proper Unit Operation Parameters
GMV5 DC INVERTER VRF UNITS SERVICE MANUAL IV. References for Proper Unit Operation Parameters Parameter Unit Commissioning Item Name 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 126 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL system high-pressure value is -15 to 5° C . ●During the cooling operation, the heating electronic expansion Opening valves always remain at 480 degree of PLS. ●During the heating operation, heating electronic the adjustable electronic expansion expansion valves change valves...
Page 127 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL indoor and 2000 PLS or between 0 and electronic 480 PLS. expansion valves ●The commissioning software shows that the number of — Communica IDUs/ODUs is consistent with the tion actual engineering quantity, parameter Communication data without communication failure.
Page 128: Chapter 4 Maintenance
GMV5 DC INVERTER VRF UNITS SERVICE MANUAL Chapter 4 Maintenance Part 1 Failure Code Table System Failure Code Table GREE VRF Display Code (1) Content symbol F J P U b d n y Distinctive symbol Indoor GREE VRF Display Code (2)
Page 129 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL GREE VRF Display Code (3) Content symbol E F J P U b d n y Distinctiv e symbol Outd GREE VRF Display Code (4) Content symbol U b d n y Distinctiv...
Page 130 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL Outd GREE VRF Display Code (5) Content symbol d n y Distinctive symbol Commis sioning...
Page 131 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL GREE VRF Display Code (6) Content symbol Distinctiv e symbol Statu For example, when E4 is displayed on the ODU, find line E and column 4 in the above tables. The fault is shown in the intersection of the line and column: High exhaust temperature protection.
Page 132: Part 2 Exception And Troubleshooting
GMV5 DC INVERTER VRF UNITS SERVICE MANUAL Part 2 Exception and Troubleshooting Exception Analyzing and Troubleshooting (1) Form analyzing 1. Control Fault Fault Possible reasons Solution code 1. The clock chip on the main board Faults in the ODU's is damaged. main board (such as 1.
Page 133 GMV5 DC 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 134 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL Figure 1 2) Solution of project number conflict: 1. Manual setting on the commissioning software: Use the commissioning software to set IDUs' project numbers separately in every system or reset projects numbers in multiple systems. Choose Setting ->...
Page 135 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL box, showing the IDU project number setting and setting button. Figure 3 Choose one IDU in the conflicting IDU box shown in Figure 3 and click Set in the setting box. Choose a value in the pop-up box shown in Figure 4 and click Set. Figure 4 If the conflict is solved, the system will return to the normal status and IDUs can be operated, as shown in Figure 5:...
Page 136 GMV5 DC 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 137 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL When the project number conflict occurs, you can use the communicator or remote controller to revise project numbers and solve the conflict. See the manual of the communicator or remote controller for the method. ③Setting of auto project number deviation on ODU's main board (recommended) You can set auto IDU project number deviation via the ODU's main board as follows: (1) After the whole system is commissioned, short press SW3 on the controlling unit and the...
Page 138 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL 1. Check the power supply of the control 1. The control board is powered off; board. Replace the control board if it 2. The compressor drive board is works properly; Communication powered off; 2.
Page 139 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL main control board off; works properly; and variable communication cable 2. Check the power supply of the drive frequency fan drive between the control board and fan board. Replace the drive board if it drive board is not connected;...
Page 140 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL Possible reasons Fault Primary reason Secondary reason Tertiary reason Fault Solution code Descriptio Confirmatio Descriptio Confirmati Descripti Confirmati n method on method on method 1. The stop valve of the Fully open Manual ——...
Page 141 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL pressure is temperatur too low (compared difference. with the 3.2 The Replace —— —— reference air pipe is difference and solder value). blocked. is large or the pipe. part of the pipe is frosting.
Page 142 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL larger than 5° C , it is exceptional. Replace Exhaust temperatur —— —— —— temperatu e sensor or re sensor main failure board. 7. The ambient temperatu It is a outdoor Measure normal exceeds ambient phenomen...
Page 143 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL Replace temperature 1.3.2 The the body of is smaller body of —— than 10° C the valve electronic is faulty. expansion valve. 2.1.1 The control Connect wire of When the electronic system is Reset the electronic expansion...
Page 144 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL Check the necessary amount of refrigerant Incorrect discharge 4. Too quantity of Other —— —— —— much refrigerant reasons unneeded refrigerant refrigerant injected. slowly via the stop valve of the fluid pipe.
Page 145 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL 2.2 Pressure exception Possible reasons Primary reason Secondary reason Tertiary reason Confirmat Confirmat Descripti Descripti Confirmation Descripti Fault method method method Solution 1. The stop valve of the ODU is not fully opened Fully open Manual the stop...
Page 146 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL 3.1 In the cooling It is a mode, normal phenome outdoor temperat Measure the caused by ure is outdoor over ambient protection —— —— 50° C temperature. function. 3.2 In the heating mode, actual It is a ambient...
Page 147 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL Connect the stop valve of the module fluid pipe and air pipe to the high and low pressure gauges and transform the readings into correspondin temperatures 4.2 The . Compare high them to the pressure high- and and low...
Page 148 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL does not board is work in loose. heating mode. 6.1.2 electric capacity is not Connect connect or replace ed or is damage Manual electric check capacity. 6.1.3 motor is damage Other Replace reasons the motor.
Page 149 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL 6.2.4 main board of the fan's motor is damage Other Replace reasons the motor. Check the necessary amount of refrigerant discharge unneeded Incorrect refrigerant quantity slowly via 7. Too the stop much refrigeran valve of refrigeran Other...
Page 150 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL opened required. Touch the 2.1.1 The Replace pipe along block is the flowing caused by solder direction of solder. the pipe. refrigerant to 2.1. The feel the system temperature difference. 2.1.2 The Cut off Replace pipeline pipeline is...
Page 151 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL later and convert the pressure into the correspondi saturation temperature. Compare it with the outdoor ambient temperature. If the difference is larger than 5° C , it is exceptional. Connect the stop valves of the module high- and...
Page 152 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL damaged. 6.1.3 The Replace motor is Other damaged. reasons motor. 6.2.1 The fan motor is not properly connected with the control Reconne board of Manual ct it the motor. check properly. 6.2.2 The fan motor is not properly...
Page 153 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL Possible reasons Primary reason Secondary reason Tertiary reason Confirm Confirm Confirm Feedback Descript ation Descripti ation Descrip ation from user Exception method method tion method Solution 1. The stop A. When valve of the IDU is Fully working in...
Page 154 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL refrigera nt to feel temperat differenc 2.4.2 e. The differenc pipeline e is large or part of blocked Replace the pipe impuriti solder frosting. the pipe. 3.1.1 system 3.1 The —— worked It is a ambient for less normal...
Page 155 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL 3.4 The outdoor ambient temperat ure in —— —— Measure heating mode is outdoor It is a lower ambient normal than temperat phenome -7° C ure. non. 4.1 The intake return inlet of the ODU are too close to...
Page 156 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL low-press ure air pipe.
Page 157 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL (2) Flowchart analyzing 1. High exhaust temperature protection (E4) When the system shows high exhaust temperature protection for compressor, the IDU will show high exhaust temperature fault E4, while the IDU will show the specific faulty compressor. For example, when high exhaust temperature protection is enabled on compressor 2# of module 3# of the ODU, IDUs will show E4 and the module will show E6, indicating that high exhaust temperature protection is enabled on compressor 2#.
Page 158 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL 2. Low exhaust temperature protection (E2)
Page 159 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL 3. System high pressure protection (E1) 4. System low pressure protection (E3)
Page 160 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL...
Page 161 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL 5. System refrigerant lacking protection (U4)
Page 162 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL 6. System high pressure ratio protection (J8)
Page 163 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL 7. System low pressure ratio protection (J9)
Page 164 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL 8. Indoor unit anti-freezing protection (L5) 9. Indoor unit water overflow protection (L3) 10. Temperature sensor fault...
Page 165 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL 11. Pressure sensor fault...
Page 166 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL 12. Analyzing of drive control system faults When the unit fails and halts, first check the two-digit nixie tube of the control board and fault table to find out the specific fault. Then check and solve the fault according to the following methods. (1) Communication failure between the compressor's drive board and control board (outdoor fault C2) If the LED of the control board is off, replace the control board;...
Page 167 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL (2) Faults in the IPM temperature sensor of the variable-frequency compressor's drive board (IDU fault P7), current detection circuit (ODU fault PC), drive module reset protection (ODU fault P3) and out-of-step protection (ODU fault P9) P3, P7, P9 or PC Check if the fault is solved after turning on the system...
Page 168 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL Attachment: How to check whether the IPM module is damaged 1. Preparation: Find a digital multi-meter and switch it to the diode. Remove U, V and W cables of the compressor from the drive board two minutes after the system is powered off. Make sure that it is tested at least two minutes after the system is powered off.
Page 169 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL (5) Recharging circuit faulty of the variable-frequency compressor drive board (ODU fault PF) Elevate the voltage of the input power cable Check if the voltage of the to 380V. whole system's input power cable reaches 280V.
Page 170 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL (7) Low voltage protection for the DC bus of the variable-frequency compressor's drive board (ODU fault Elevate the voltage of the input power cable Check if the voltage of the to 380 V. whole system's input power cable is lower than 320V.
Page 171 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL 13. Analyzing of faults in the variable-frequency fan drive's control system (1) Communication failure between the fan's drive board and control board (outdoor fault C3) Replace the control board if its LED is off; replace the drive board if its LED is off.
Page 172 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL (3) Variable-frequency fan over-current protection and IPM module protection faults (ODU fault H5 and H5 or H6 Check if the IPM module is Replace the fan's drive board damaged according to the method mentioned in Attachment 4.3.
Page 173 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL (4) Variable-frequency fan drive board IPM over-temperature fault (outdoor fault H8) Check if the fault occurs Replace the fan's drive after the system is board. power on. Screw the IPM module properly and apply thermal Check if the IPM module is gel on its surface.
Page 174 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL (6) Low voltage protection for the DC bus of the variable-frequency fan's drive board (ODU fault HL) Elevate the voltage to Check if the voltage of the 380V. input power cable is lower than 320V Check if the terminal CN503 and CN504...
Page 175: Part 3 Key Parts Maintenance
GMV5 DC INVERTER VRF UNITS SERVICE MANUAL Part 3 Key Parts Maintenance I. Cautions on Controller AP1 Replacement 1. Cautions on ODU AP1 Replacement 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 176 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL 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; otherwise, ―CC does not have module‖ will be prompted and a ―C0 fault‖ alarm will be reported by the IDUs.
Page 177 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL 2.3 Cautions on Replacement of Master IDU AP1 If the AP1 of the master IDU needs to be replaced, after the IDU is powered on, ―No master IDU (L7)‖ or ―Project number conflict (C5)‖ alarm may be reported. ①Troubleshoot for ―no master IDU (L7)‖...
Page 178 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL Number Auto If this fault occurs, the number of the new AP1 is identical to that of a unit within the network. Manually change it to the original number of the faulty AP1 or a unique number. There are three methods to change project number: Method 1: If the IDU is configured with wired control, set P42 to a new project number.
Page 179 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL 2.4 Cautions on Replacement of Slave IDU AP1 If the AP1 of a slave IDU needs to be replaced, after it is powered on, ―Project number conflict (C5)‖ alarm may be reported. Refer to section 2.3 ―Cautions on Replacement of Master IDU AP1‖...
Page 180: Compressor Replacement And Cautions
GMV5 DC INVERTER VRF UNITS SERVICE MANUAL 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; otherwise, the LCD displays L7 (no master IDU). There are two methods to set the IDU: ①In shut mode, press and hold the ―MODE‖...
Page 181 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL Evaporating Temp. (°C) Note: You can infer from the preceding figures the current of the compressors operating at other frequency bands. ②For inverter compressor E405DHD-38D2YG: The figure below shows current curves that change with evaporating temperature and condensing temperature while the compressor works at 30 Hz.
Page 182 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL Current curve Evaporating temp. (°C) Note: You can infer from the preceding figures the current of the compressor operating at other frequency bands. Step 2: Check whether the compressor sounds sharp or rubs. Compare the sound of the faulty compressor with that of normal ones.
Page 183 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL Touch the upper part of an electric expansion valve and you will feel its vibration while units are being powered on Make sure the coil is fixed and firm ②Four-way valve: While this valve is normally running, the four copper pipes connected to it will suffer different temperature.
Page 184 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL D – Connects to exhaust. Watch out for scald! 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 185 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL 3. As shown in the figure below, put the black test probe to pad P and the red test probe to pad V (YE) (make sure the moisture proof tape is removed). In normal cases, the multimeter should read 0.39± 0.3 V. If it is ―0‖...
Page 186 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL 6. As shown in the figure below, put the black test probe to pad V (YE) and the red test probe to pad NV (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 187 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL 7. As shown in the figure below, put the black test probe to pad W (RD) and the red test probe to pad NW (make sure the moisture proof tape is removed). In normal cases, the multimeter should read 0.39± 0.3 V. If it is ―0‖...
Page 188 For GMV5 series, only GMV-400WM/B and GMV-450WM/B 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...
Page 189 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL Step 3: Check oil quality. Oil checking valve Before releasing the refrigerant, get some freezing oil through the oil checking valve. Connect a rubber hose to the oil checking valve at one end and a glass container at the other end. Open the oil checking valve.
Page 190 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL At the high pressure side, refrigerant is released through the high pressure sensor. Oil checking valve Refrigerant should be released from the high pressure side and low pressure side at the same time. Control the release speed.
Page 191 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL 1. Inlet of inverter compressor 2. Outlet of inverter compressor 3. Unscrew the compressor...
Page 192 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL For GMV-400WM/B-X and GMV-450WM/B-X variable frequency units, their compressors are both inverter compressors, differing in models. The one close to the condenser is compressor 1 ―E655DHD-65D2YG‖ and the other close to the liquid separator head is compressor 2 ―E405DHD-38D2YG‖.
Page 193 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL 2. Weld the inlet and outlet pipes of the oil separator 1. Weld the oil return pipe and oil balance oil pipe of the separator 3. Unscrew the oil separator 2. Check oil balancer. 2.
Page 194 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL 3. Check gas/liquid separator. 1. Weld the inlet and outlet pipes of the gas separator 3. Remove the 2. Unscrew the gas/liquid separator gas separator After the gas separator is taken out, check whether it contains impurities. The check procedure is as follows: Note: While drawing liquid out from the gas separator,...
Page 195 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL 4. Check oil return pipes. Remove oil return pipes and balance pipes, and check oil volume and impurity. Remove oil return pipes Remove balance pipes ※ Note: Before replacing the faulty parts, make sure to block their openings with tapes. They should be kept intact for further analysis.
Page 196 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL 3. Remove the large 2. Remove the oil filter to see whether balance filter to see it is blocked. If yes, whether it is blocked. If replace the filter yes, replace the filter 4.
Page 197 GMV5 DC 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 the filter ③Clear liquid pipe filters.
Page 198 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL should be blocked. If the sealing rubber is not available, cover them with tape to prevent direct contact of oil and air. The rubbers used for blocking the inlet and outlet of compressors must be intact The cover of the electric box...
Page 199 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL The sealing rubbers for various parts must be intact Note: Compressor lubricant must be kept completely airtight. Hitachi compressors use special lubricant FVC68D whose moisture absorption capability is high. Requirements on air-tightness of these compressors are higher. 2.
Page 200 GMV5 DC 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 4. Screw the proper position separator onto the chassis Step 9: Install a new oil balancer.
Page 201 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL 2. Weld the connecting pipes of the 1. Put the oil oil separator separator on a proper position 4. Weld the oil return 3. Screw the components oil separator Step 11: Install a new compressor.
Page 202 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL 2. If it is a inverter compressor that needs replacement, 1. Weld the inlet of the inverter compressor 2. Weld the outlet of the inverter compressor 3. Screw the compressor For compressors of GMV-400WM/B-X and GMV-450WM/B-X units, make sure the new compressors are consistent with the faulty ones in model.
Page 203 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 204 Note: Lubricant is of great importance to the normal running of compressors. You should follow Gree’s requirement to add qualified lubricant of the specified trademark and ensure properness of fill amount. Step 14: Vacuum-pump. After lubricant is added, keep on extracting air through a vacuum pump till the internal pressure reaches...
Page 205 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL Open all valves in order that the vacuum pump extracts air through all the valves Oil checking valve If the maintenance work involves multiple parts, extract air of the balance pipe independently Low pressure check valve Gas pipe Liquid...
Page 206: Cautions On Compressor Drive Replacement
GMV5 DC INVERTER VRF UNITS SERVICE MANUAL 2. If the refrigerant is proved satisfactory, fill refrigerant of the combined amount of the rated amount (specified on the nameplate) and the calculated refrigerant loss amount. For a multi-modular unit system, if only the refrigerant of an ODU is drawn out, add 80% refrigerant of the rated fill amount (specified on the nameplate of the ODU) and start the system for a debugging test.
Page 207 GMV5 DC 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 not distinguished by polarity Connect to...
Page 208 GMV5 DC 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 209: Assembling And Disassembling Key Parts Of Odus
GMV5 DC INVERTER VRF UNITS SERVICE MANUAL IV. 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 1.
Page 210 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL ● Remove the compressor from 5. Remove the compressor. the chassis. ● Put the compressor in a proper 6. Install a new compressor on the position. ● Use a wrench to screw the nuts chassis.
Page 211 GMV5 DC 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 1. Loosen the hooks at the bottom of the front panels.
Page 212 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL ●Put the valve in a proper 5. Install a new four-way valve. position. ● Weld the valve with the pipeline. ●Before welding, cover the valve with wet cloth to avoid internal slide from being burnt and prevent water from flowing in the pipeline.
Page 213 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL Electric expansion valve Precondition: No refrigerant exists in the pipeline system and the power supply has been disconnected. Step Diagram Operation Procedure ● Remove the upper and lower 1. Loosen the hooks at the bottom of the front panels.
Page 214 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL ● Weld the connecting pipes with 5. Install a new electric expansion the electric expansion valve. ● Before welding, cover the valve valve. with wet cloth. ●During welding, charge nitrogen into the pipes. The pressure should be controlled within 0.5±...
Page 215 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL ● Remove the upper and lower 1. Loosen the hooks at the bottom of the front panels. ● Loosen the hooks at the electric box and the screws. bottom of the electric box. ●...
Page 216 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL ●Weld the four pipe joints with 5. Install a new oil separator. the oil separator. During welding, charge nitrogen into the pipes. The pressure should be controlled within 0.5± 0.1 kgf/cm2 (relative pressure). Note: Avoid nearby parts from being burnt during welding.
Page 217 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL ●Disconnect internal and 2. Remove the electric box. external connecting lines of the electric box. ●Protect the internal parts during the disassembly. ●Heat the connecting pipes of 3. Disassemble the gas/liquid separator. the gas/liquid separator by acetylene welding and then remove the pipes.
Page 218 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL ●Put the electric box back to 6. Fix and wire the electric box. original position and screw it. ● Connect all lines. ●Check various parts and 7. Check and install the front panels. connecting lines.
Page 219 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL ●Disconnect internal and 2. Remove the electric box. external connecting lines of the electric box. ●Protect the internal parts during the disassembly. ●Heat the connecting pipes of 3. Disassemble the heat exchanging the heat exchanging board by board.
Page 220 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL ●Put the electric box back to 6. Fix and wire the electric box. original position and screw it. ● Connect all lines. ●Check various parts and 7. Check and install the front panels. connecting lines.
Page 221: Exploded Views And Part List
GMV5 DC INVERTER VRF UNITS SERVICE MANUAL V. EXPLODED VIEWS AND PART LIST 1. Model: GMV-224WM/B-X, GMV-280WM/B-X Exploded View:...
Page 222 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL Parts List: GMV-224WM/B-X GMV-280WM/B-X Name of part Product Code CN851W1280 Product Code CN851W1290 Part code Quantity Part code Quantity Rear Grill 01574105 01574105 Top Cover 01264230 01264230 Diversion Circle 10474100 10474100 Fan motor Sub-Assy 15404605 15404605 Axial Flow Fan Sub-Assy...
Page 223 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL Oil Equalizing Pipe Sub-Assy 04224100148 04224100148 Oil Separator 07424100023 07424100023 Pressure Switch 4602000911 4602000911 Discharge Tube Sub-assy 04534100050 04534100050 Front Panel 01544627P 01544627P Handle 26904100016 26904100016 Front Panel 01544620P 01544620P Temperature Sensor 39008000006G 39008000006G Sub-Assy Pressure Sensor...
Page 224 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL 2. Model: GMV-335WM/B-X Exploded View:...
Page 225 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL Parts List: GMV-335WM/B-X Name of part Product Code CN851W1300 Part code Quantity Rear Grill 01574100002 Top Cover 01264100006P Diversion Circle 10474100002 Motor for Axial Fan Assy 15404100018 Axial Flow Fan 10434100002 Fan Motor 15704124 Gas By-pass sub- assy 04634100012...
Page 226 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL Magnet Coil 4304000440 Oil Equalizing Pipe Sub-Assy 04224100059 Magnet Coil 4304000423 Left Front Panel 01544100003P Right Front Panel 01544100005P Handle 26904100016 Front Top Cover 01264100004P Sensor Sub-assy 39004100008G Pressure Sensor 32218000009 Pressure Sensor 32218000008 Discharge Tube Sub-assy 04534100052...
Page 227 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL 3. Model: GMV-400WM/B-X，GMV-450WM/B-X Exploded View:...
Page 228 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL Parts List: GMV-400WM/B-X GMV-450WM/B-X Name of part Product Code CN851W1310 Product Code CN851W1320 Part code Quantity Part code Quantity Rear Grill 01574100002 01574100002 Top Cover 01264100006P 01264100006P Diversion Circle 10474100002 10474100002 Motor for Axial Fan 15404100018 15404100018 Assy...
Page 229 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL Sub-Assy 2 Compressor and 00204116 00204116 Fittings Electric 7651540714 7651540714 Heater(Compressor) Compressor 00204100002 00204100002 Electric 7651540713 7651540713 Heater(Compressor) Front Panel (Left) 01544100003P 01544100003P Front Panel (Right) 01544100005P 01544100005P Handle 26904100016 26904100016 Cover Plate 01264100004P 01264100004P Sensor Sub-Assy...
Page 230 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL GMV-504WM/B-X, GMV-560WM/B-X, GMV-615WM/B-X 4. Model: Exploded View:...
Page 231 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL Parts List: GMV-504WM/B-X GMV-560WM/B-X GMV-615WM/B-X CN851W16 CN851W16 CN851W16 Name of part Product Code Product Code Product Code Part code Quantity Part code Quantity Part code Quantity Rear Grill 01574100002 01574100002 01574100002 01264100006 Coping 01264100006P 01264100006P Diversion Circle...
Page 232 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL 01264100004 Top Cover (front) 01264100004P 01264100004P 01206250004 012062500040 012062500040 Left Front Panel Handle 26904100016 26904100016 26904100016 Electric expand 4304413203 4304413203 4304413203 valve fitting Electric Expand 4304413204 4304413204 4304413204 Valve Fitting Magnet Coil 4304000414 4304000414 4304000414 Magnet Coil...
Page 233: Ⅵ. Common Parameter Lists
GMV5 DC INVERTER VRF UNITS SERVICE MANUAL Ⅵ. Common Parameter Lists 1. R410a refrigerant pressure / saturation temperature list Corresponding Corresponding Corresponding Temperature Temperature Temperature saturation pressure saturation pressure saturation pressure (° C ) (° C ) (° C ) (BAR) (BAR) (BAR)
Page 234 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL 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 0.866 1.207 3.054 40.09 0.899 1.171 3.061...
Page 235 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL 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 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) Resistance (kΩ) Resistance (kΩ)
Page 236 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL 21.85 1.577 0.7895 3.175 20.9 1.614 0.7687 3.178 1.65 0.7485 3.181 19.14 1.686 0.7289 3.184 18.32 1.722 0.7099 3.187 17.55 1.758 0.6915 3.19 16.8 1.793 0.6736 3.192 16.1 1.828 0.6563 3.195 15.43 1.863 0.6395 3.198 14.79...
Page 237 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL 323.94 0.099 6.542 1.995 306.23 0.104 6.3315 2.021 289.61 0.11 6.1288 2.046 274.02 0.116 5.9336 2.071 259.37 0.123 5.7457 2.096 245.61 0.129 5.5647 2.12 232.67 0.136 5.3903 2.144 220.5 0.143 5.2223 2.168 209.05 0.151 5.0605 2.191...
Page 238 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL 15.173 1.311 1.0429 2.988 14.618 1.34 1.0197 2.995 14.085 1.37 0.9971 3.001 13.575 0.9752 3.007 13.086 1.429 0.9538 3.013 12.617 1.459 0.9331 3.018 12.368 1.475 3. Voltage / pressure lists of pressure sensors 3.1 High-pressure sensor (R410a) Temperature (°...
Page 239 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL 1159 1.15 4548 4.763 1193 1.186 4639 4.86 1228 1.224 4731 4.958 1263 1.261 4893 5.13 3.2 Low-pressure sensor (R410a) Absolute pressure Voltage Absolute pressure Voltage Temperature Temperature (° C ) (kPa) (° C ) (kPa) 0.369 1.301...
Page 240: Chapter 5 Remote Control
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 241 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...
Page 242 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL...
Page 243 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 244 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 245 ―Launcher.exe‖ file to display the page. If it is the first time to use Gree Debugger, the following software needs to be installed: .Net Framework 4.0, USB Converter Driver, Access Driver (required for versions earlier than Office 2007), and Gree Debugger.
Page 246 Install .Net Framework 4.0 Install Gree Debugger Install USB Converter Driver Install Gree USB data converter configuration software This is a simplified software setup procedure. For details, read the following section. 4.3 Installation Procedure 4.3.1 Installing .Net Framework 4.0 If your PC has been installed with .Net Framework 4.0 or later version, skip this step. Otherwise, click ―Install .Net Framework 4.0‖.
Page 247 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL Check ―I have read and accept the license terms‖ and click ―Install‖. Installing.
Page 248 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL Click ―Finish‖.
Page 249 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL 4.3.2 Installing Access Driver Before the Gree Debugger can run, install the Access Driver (required for versions earlier than Office 2007). Click ―Install Access Driver‖. Click ―Next‖.
Page 250 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL Check ―I accept the terms in the License Agreement‖ and click ―Next‖.
Page 251 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL Click ―Browse‖ to select a path. If you want to use the default path, click ―Install‖. Installing.
Page 252 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL Click ―OK‖. 4.3.3 Installing Gree Debugger Before installing Gree Debugger, make sure your PC has been installed with .Net Framework 4.0 or later version. Click ―Install Gree Debugger‖.
Page 253 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL Click ―Next‖. Click ―Browse‖ to select a path. If you want to use the default path, click ―Next‖.
Page 254 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL Click ―Next‖. Installing.
Page 255 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL Click ―Close‖.
Page 256 ODUs and gateways. 5.1.4 Other Functions Gree Debugger also instructs users to connect units, and allows users to capture screens, open database files, rebuild database, and modify database file saving path. 5.2 How to Use Gree Debugger 5.2.1 Viewing Unit Parameters...
Page 257 GMV5 DC 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 units.
Page 258 GMV5 DC 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 259 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 260 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL The following figure shows the compositions of the parameter page. You can click to hide the unit information area and system information area. Within the IDU information area and fault information area, you can drag. Within the outdoor module information area, you can choose to show one module only (by default, two modules are displayed at the same time in the proportion of 3:1).
Page 261 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL menu bar can also be hidden by clicking . In the status bar, current sampling time and total sampling time are shown. Menu bar Title bar Fault information System information Outdoor module information Unit information IDU information Status bar...
Page 262 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL Click ―Start‖ to enable Gree Debugger and units automatically debug. indicates a currently debugging step and indicates a successfully debugged step. Steps that have the ―OK‖ button available enable users to continue further debug. Click...
Page 263 In this case, users need to rectify the fault first. After the issue is addressed, Gree Debugger automatically continues the debug procedure if there is not an ―OK‖ button available; otherwise, users should click ―OK‖ to confirm. Click and corresponding debug information will be shown, helping you analyze the fault.
Page 264 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL During debugging, if you click ―Stop‖, the debug is interrupted. Click ―Start‖ to continue debug. When debug goes on to step 10 ―ODU Valves Check Before Startup‖, ―Back‖ and ―Skip‖ are available. If this step fails, you can go back to step 9.
Page 265 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL Steps 11, 13, and 14 are reserved. Steps 13 to 16 are concurrent steps. That is, only one of them will be executed at one time. When ―Project Debug Completion‖ is checked green, the engineering debug is finished. 5.2.3 Controlling Units In the menu bar, choose ―Setting‖...
Page 266 GMV5 DC 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 check the IDUs. Parameter information of selected IDUs will be shown in the Settings area. Click ―Set…‖ in the displayed dialog box to select.
Page 267 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL 5.2.4 Other Functions Capturing screen To capture a screen, click ―Capture Screen‖ in the menu bar. If you want to open the screen, click ―Open‖.
Page 268 GMV5 DC 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 269 GMV5 DC 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 270 GMV5 DC 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 data to save.
Page 271 Choose ―Others‖ -> ―Change Database Saving Path‖. In the displayed dialog box, click ―Browse‖ to select a path. Choose ―Others‖ -> ―Rebuild Database‖ to rebuild database. If Gree Debugger has run, you can stop the software and return to the connection page to operate.
Page 272 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL...
Page 273: Part 2 Remote Control
Install .Net Framework 4.0 first and then install Gree Debugger. Part 2 Remote Control Gree CAC Remote Monitoring System is an Internet- or LAN-based remote automation and centralized management system, a smart energy management system, and an all-round solution to air conditioning systems, providing remote control, fault alarm, visualized management and other functions, enabling users to manage air conditioning units in a real time, safe, and effective way.
Page 274 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. 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.
Page 275 GMV5 DC 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 276 1.4.2 Modbus Gateway 1.4.2.1 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 277 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL Running Alarm Power Address Function Gateway...
Page 278 CAN Interface: It is connected to the air conditioning system through twisted pairs so as to get through the communication between the Modbus gateway and the air conditioning system. RS485-1 Interface: It is connected to Gree Web-based Remote Monitoring and Control System/BMS through twisted pairs so as to get through the communication between the Modbus gateway and the Gree Web-based Remote Monitoring and Control System/BMS.
Page 279 Modbus gateway is recommended to install near air conditioning units so as to shorten their communication distance. The maximum allowable communication distance of them is 500 m. For the communication distance between Modbus gateway and Gree CAC Remote Monitoring System/BMS system, we can use optoelectronic isolated repeaters for expansion.
Page 280 2. Connection of Communication Lines Precaution Only serial connection is allowed for all communication lines of the Modbus gateway. The star connection is prohibited. (1) Communication lines between the Modbus gateway and the Gree Web-based remote monitoring and control system/BMS...
Page 281 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL Gree Remote Monitoring System/BMS System Gree Remote Monitoring System/BMS System …… (2) Communication lines between the Modbus gateway and the air conditioning system …… …… ODU system 1 ODU system 2 ODU system n...
Page 282 (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 to the optoelectric converter interface R+ and R- or BMS through communication lines.
Page 283 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL 1.4.2.4 Hardware Debug 1. DIP Switch Note The DIP switches shall be set prior to operation of the gateway. This Modbus gateway includes two kinds of DIP switches, address DIP switch and function DIP switch. Address Function (1) Structural Drawing of the DIP Switches...
Page 284 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL Address Code Address DIP 1 1 0 1 0 1 0 0 43 Address DIP (3) Function DIP Switch-CAN Bus Matched Resistance Setting Precaution The master ODU of air conditioning system or the gateway located at either end of the CAN2 bus (see the topological drawing) should include a matched resistance;...
Page 285 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL The RS485 bus should be terminated with a matched resistance to avoid signal reflex along the transmission line. In application of the Modbus gateway, an upper unit as the terminal unit is usually coupled with a RS485 matched resistance, so this gateway is factory defaulted to be without a matched resistance.
Page 286 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL POWER It lights on when the Modbus gateway is powered normally. It flashes when the Modbus gateway is in normal operation. ALARM It is reserved. 3. Digital Inputs and Outputs This gateway supports five DIs (digital inputs) and five DOs (digital outputs). There is another reserved digital output DO 6.
Page 287 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL 1.4.2.5 Communication Debug...
Page 288 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL 1.4.3 Introduction of Optoelectronic Isolated Converter 1.4.3.1. 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. 1.4.3.2.
Page 289 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL 1.4.3.3 Interfaces and LEDs RS485 cable connector R+ R- Power LED POWER Data receiving Data transmitting V+ V- E RS232 Power cable DB9 Female Head Connect the PC COM connector SN Interface Name Description Remark Power interface...
Page 290 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL A maximum of 30 Modbus gateways are supported between two repeaters. The total length of communication lines used between two repeaters cannot exceed 800 m. 1.4.4.2 Appearance Note: Actual product prevails. The picture is for reference only.
Page 291 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL 1.4.4.3 Interfaces and LEDs RS485 terminal Power LED Run LED Power line terminal RS485 terminal SN Interface Name Description Remark Power interface Input AC220V~50HZ; Output 12~30V DC 800mA Accompanied power supply of the repeater Communication interface Line A of RS485 connected to R+ on 485 terminal, See related instructions...
Page 292 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 293 GMV5 DC 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 294 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL For details, read the following section. 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 295 GMV5 DC 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. 5.
Page 296 GMV5 DC 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 297 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL...
Page 298 GMV5 DC 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. 8.
Page 299 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 300 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL 11. In the displayed window, select ―I Agree‖ and click ―Next‖ to continue.
Page 301 GMV5 DC 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 302 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 303 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL Choose ―Start‖ -> ―All Programs‖ -> ―Gree CAC Remote Monitoring System‖ -> ―Activate Software‖ and enter the correct activation code. 5.4 Uninstallation Software uninstallation procedure is as follows: 1. Stop the ―BAS Manager‖ service.
Page 304 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL...
Page 305 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL 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 306 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL b. Right click ―Local Connect‖ and choose ―Local Connect Properties‖. c. In the ―Local Connect Properties‖ window, select ―Internet (TCP/IP)‖ and click ―Properties‖. The ―Internet (TCP/IP) Properties‖ window appears. The ―IP Address (I)‖ is the IP address of the server PC. The following figure shows that the IP address of the PC is 172.16.63.245.
Page 307 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL...
Page 308 GMV5 DC 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 309 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL Troubleshooting procedure is as follows: 1. Check network lines of the server and client and make sure they connect to the LAN; 2. Ping the IP address of the server on the client (for detailed operation, refer to the maintenance chapter).
Page 310 GMV5 DC 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‖ to install the plugin. After Microsoft Silverlight is installed, the page is automatically refreshed, as shown in the following page: 7.
Page 311 Note: If the quantity of conflict IDU numbers is not large, you are advised to manually set them using Gree Debugger, control panel, or remote control. Manual setting is applicable to intra-ODU conflicts only, not affecting numbers of other IDUs. If the quantity is large, automatic offset is recommended, which is easy to realize.
Page 312 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‖. 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 313 ―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 314 GMV5 DC 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 315 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL After detection, detected devices will be listed in the ―Net tree‖.
Page 316 GMV5 DC 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‖. Step 7: Define devices.
Page 317 GMV5 DC 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.
Page 318 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL Double click a room. Click ―Net tree‖ and select devices based on the air conditioner list. Drag the devices into the room. View the devices in the ―Project tree‖.
Page 319 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL Step 9: Save the project. Step 10: Enter the ―Visual navigation‖ page and you can monitor the air conditioners of the created...
Page 320 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL project. Note: The devices also can be monitored in the ―Net tree‖ and ―Intelligent steward‖.
Page 321 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL 8. Troubleshooting 8.1 Hardware Faults Table 6. Hardware faults Symptom Possible Cause Troubleshooting The communications lines Replace the communication are not twisted pairs. lines with twisted pairs. Replace the damaged Gateway damages. gateway. Communication lines Weld the interrupted lines.
Page 322 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL Possible cause: The database for the Remote Monitoring System on the server is not enabled. Solution: (1) Check whether the database for the Remote Monitoring System in the server is enabled. Right click ―My computer‖...
Page 323 GMV5 DC 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 324 GMV5 DC 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 325 ―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 326 GMV5 DC 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. Network line of the server or the client is not properly connected.
Page 327 GMV5 DC 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 328 GMV5 DC 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‖...
Page 329 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 330 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL 3. BACnet Gateway Topology As shown in the topological diagram below, the whole system consists of the internal network of the air conditioning unit and BACnet/IP network through which the communication data can be exchanged. In the network above, L3 is the line for RJ45 and L2 is the twisted pair line.
Page 331 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL 4.1.1 BACnet Gateway TCP/IP (Default) IP Address: 192.168.1.150; Subnet Mask: 255.255.255.0; Default Router: 192.168.1.1. 4.1.2 Parts and Assembly See figures below for the real parts and final assembly of the BACnet gateway kit MG30-24/D2(B). Parts Name PCD3.M6340 PCD7.R-SD1024...
Page 332 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL 4.1.3 Parts Assembly The figure below shows assembly position of various parts of the BACnet gateway kits MG30-24/D2(B): The figure below shows final assembly of various parts of the BACnet gateway kits MG30-24/D2(B):...
Page 333 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL 4.2 Interfaces and Indicating LEDs 4.2.1 Interfaces Interfaces as shown in the figure below are available. 4.2.2 Power Interfaces Power supply is input through the wiring terminals. Power Supply: 24VDC -20/+25% incl. 5% ripples as per EN/IEC 61131-2, 175mA/4.2W normal, 500mA/12W maximum.
Page 334 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL Description Printed Mark Terminal Description 1/2: without the As shown in the figure above, matched when the switch is set to the end ―ON‖, it indicates the resistance S1(1) matched resistance is added; DIP switch S1(2) when the switch is set to the...
Page 335 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL ○LED OFF ●LED ON ●/○LED flash CPU type PCD3.M6430 battery module Batt Halt Error Color Green Yellow ○ ● ○ ○ ○ ●/○ ○ ○ Run cond. ○ ● ○ ● Run with error ○...
Page 336 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL Start Self-diagnosis for approx. 1 sec. after switching on or after a Restart Normal processing of the user program after Start. Where a programming unit is connected via a PCD8.K11x in PGU mode (e.g.
Page 337 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL The memory module has 5 indicating LEDs: Meaning User User LED, set by the user program with the base address of the module (SET = off; RES = on) Diag Flashes when there is an error message Write Prot Active when a "write-protected"...
Page 338 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL The PCD3 CPUs and the module holders can be snapped onto the 35mm top-hat rail according to DIN EN60715 TH35 (formerly DIN EN50022). (Remember: the PCD2 needs two hop-hat rails). Mounting the PCD3 on the top-hat rail: (1) Press the bottom of the housing onto the mounting surface.
Page 339 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL 4. BACnet Gateway Topology As shown in the topological diagram below, the whole system consists of the internal network of the air conditioning units and BACnet/IP network. Through BACnet gateways, communication data can be exchanged.
Page 340 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL BMS system Gree Web-based Gree Web-based Remote Monitoring and Remote Monitoring and Control System (client) Control System (client) Router Gree Web-based Remote Monitoring and Control System (server side) BACnet gateway 1 BACnet gateway n...
Page 341 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL In the network above, L3 is the line for RJ45; L2 and L1 are the twisted pair line. Notes: the total length of L2 cannot exceed 500m and a matched resistance shall be added at both ends.
Page 342 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL 4.4.3 Connection Between the BACnet Gateway and the PC There are two methods to connect BACnet gateways and PCs. 1. Cross Connection...
Page 343 Twist pair, with the polarity the same as that of the master ODU (address DIP setting is 0). 5. Software 5.1 List of Parts Part Quantity Supply Purpose Range Disk Used for installing Gree CAC Remote Monitoring System on a server PC Installation guide Providing instruction on the installation of Gree CAC Remote Monitoring System...
Page 344 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 345 You only need to select a proper OS for installation. See the following page: For details, read the following section. 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:...
Page 346 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL 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. 3. If the PC is not installed with Microsoft.NET Framework 4, click ―Accept‖ in the displayed window and the Setup Wizard will install Microsoft.NET Framework 4 for you.
Page 347 GMV5 DC 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. 5.
Page 348 GMV5 DC 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 349 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL...
Page 350 GMV5 DC 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. 8.
Page 351 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 352 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL 11. In the displayed window, select ―I Agree‖ and click ―Next‖ to continue.
Page 353 GMV5 DC 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 354 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 355 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL Choose ―Start‖ -> ―All Programs‖ -> ―Gree CAC Remote Monitoring System‖ -> ―Activate Software‖ and enter the correct activation code.
Page 356 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 357 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL 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 358 GMV5 DC 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 figure shows that the IP address of the PC is 172.16.63.245.
Page 359 GMV5 DC 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 360 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL Note: If your browser is set to English, the login page will be English as well. 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 361 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL c. Enter the default username and password of the Administrator and click ―Login‖. If the following system homepage appears, system debug succeeds and the software can be used. Default username of the Administrator: admin; password: basstart Note This debug method is for the Administrator only.
Page 362 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL Troubleshooting procedure is as follows: 1. Check network lines of the server and client and make sure they connect to the LAN; 2. Ping the IP address of the server on the client (for detailed operation, refer to the maintenance chapter).
Page 363 GMV5 DC 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‖ to install the plugin. After Microsoft Silverlight is installed, the page is automatically refreshed, as shown in the following page:...
Page 364 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL 7. Troubleshooting 7.1 Hardware Faults Symptom Possible Cause Troubleshooting Communication lines of units are not twisted pairs (except for lines Replace the communication connecting BACnet gateways lines with twisted pairs. and PCs, other communication lines must be twisted pairs).
Page 365 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL connect the communication interfaces. ODUs, after being replaced with chips or reset with DIP, are not Re-power on the ODUs. re-powered on. Refer to the network topology in the BACnet Matched resistance is not Technical Manual to configured.
Page 366 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL 7.2 Software Faults 7.2.1 Software Abnormalities 1. Though the username and password entered are correct, the system prompts ―Please contact the administrator‖, as shown in the following figure: Possible cause: The database for the Remote Monitoring System on the server is not enabled. Solution: (1) Check whether the database for the Remote Monitoring System in the server is enabled.
Page 367 GMV5 DC 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 368 GMV5 DC 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 369 ①Right click the BAS Manager icon in the status bar at the lower right corner on the desktop and choose ―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 370 GMV5 DC 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. Network line of the server or the client is not properly connected.
Page 371 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL The IIS manager in the server abnormally disables the website. Solution: (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 372 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL ① If the following timeout information is displayed, network fails. Check network information. (5) If network is available but the client still cannot access the server website, you need to open the IIS manager.
Page 373 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL 5. No unit information is found after self detection. Possible causes: BAS Service is abnormally disabled. Communication between the server and BACnet gateway fails. Communication between the BACnet gateway and units fails. Solution: (1) Check whether BAS Service is disabled.
Page 374 GMV5 DC 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. (2) Ping the BACnet gateway on the server. If the server is successfully pinged through, communication...
Page 375 GMV5 DC INVERTER VRF UNITS SERVICE MANUAL JF00302751...

This manual is also suitable for:

Gmv-224wm/b-x Gmv-280wm/b-x Gmv-450wm/b-x Gmv-504wm/b-x Gmv-335wm/b-x Gmv-560wm/b-x ... Show all

Gree GMV5 Series Service Manual

Chapter 1 Introduction to Basic Features of Units

Chapter 2 Installation

Chapter 3 Commissioning Operation

Chapter 4 Maintenance

Chapter 5 Remote Control

Quick Links

Related Manuals for Gree GMV5 Series

Summary of Contents for Gree GMV5 Series

This manual is also suitable for:

Table of Contents