Gree GMV-PD100W/NAB-K Service Manual
  1. Manuals
  2. Brands
  3. Gree Manuals
  4. Air Conditioner
  5. GMV-PD100W/NAB-K
  6. Service manual

Gree GMV-PD100W/NAB-K Service Manual

Dc inverter multi vrf
Hide thumbs
Table of Contents

Advertisement

Quick Links

CENTRAL AIR CONDITIONERS
DC INVERTER MULTI VRF
SERVICE MANUAL
T1/R410A/50Hz
(GC201112)

Advertisement

Table of Contents
loading

Related Manuals for Gree GMV-PD100W/NAB-K

Summary of Contents for Gree GMV-PD100W/NAB-K

  • Page 1 CENTRAL AIR CONDITIONERS DC INVERTER MULTI VRF SERVICE MANUAL T1/R410A/50Hz (GC201112)

  • Page 2: Table Of Contents

    CONTENTS PRODUCT ..................... 2 1 MODELS LIST ......................2 2 NOMENCLATURE ....................2 3 FUNCTION ....................... 3 4 PRODUCT DATA ...................... 4 4.1 Product Data ..........................4 4.2 Operation Range...........................6 5 PIPING DIAGRAM ....................6 5.1 Heat Pump ...........................6 CONTROL ..................... 8 1 OPERATION FLOWCHART ..................
  • Page 3 9.2 Working Process of Gate Control ....................55 9.3 Detection Control Board Interface Sketch is shown in Fig.2: ............56 9.4 Products Parameters .........................56 9.5 Installation of Detection Control Board ..................56 INSTALLATION ................... 59 1 PRECAUTIONS FOR INSTALLATION ..............59 1.1 Precautions for installation ......................59 1.2 Key Points of Installation......................60 2 FLOW CHART OF INSTALLATION .................
  • Page 4 1.1 List of Error Display on Wired Controller..................96 1.2 Display Code on Digital Tube of Outdoor Mainboard..............97 2 FLOW CHART OF TROUBLESHOOTING ............. 98 2.1 High-pressure Protection ......................98 2.2 Low-pressure Protection ......................99 2.3 Exhaust Temperature Protection ....................100 2.4 Compressor overcurrent protection...................101 2.5 Communication error.........................103 2.6 Water-full protection ........................104 2.7 Error with room sensor, tube-inlet, tube middle and tube-exit sensor;...
  • Page 5 DC Inverter Multi VRF Service Manual PRODUCT...

  • Page 6: Product

    CN850W0140 54592 60051 3N~,50Hz 2 NOMENCLATURE Description Options Code for type GMV=Gree Multi Variable Code for weather Default:T1 T2:T2 weather T3:T3 weather L: Cooling Only Code for model Default: Heat pump Units Series Pd: DC inverter VRF 120 represents 12kW Nominal cooling capacity Btu/h=kW×3412...

  • Page 7: Function

    DC Inverter Multi VRF Service Manual 3 FUNCTION Auto Restart Fan Operation Mode LCD Remote Controller (Option) Auto Swing Function Ceiling Soiling Prevention Comfortable Program Dry Air Conditioning High Fan Speed Mode High Ceiling Application Two Select Thermo Sensor Hot Start Timer Selector Fresh Return air inlet Directly from The Unit Drain Pump...

  • Page 8: Product Data

    DC Inverter Multi VRF Service Manual 4 PRODUCT DATA 4.1 Product Data Model GMV-Pd100W/NaB-K GMV-Pd120W/NaB-K GMV-Pd140W/NaB-K GMV-Pd160W/NaB-K Product Code CN850W0072 CN850W0012 CN850W0022 CN850W0032 Cooling kBtu/h Capacity 15.4 17.6 Heating kBtu/h Sound Pressure Level dB(A) Refrigerant R410A R410A R410A R410A Refrigerant Filling Amount...
  • Page 9 DC Inverter Multi VRF Service Manual Model GMV-Pd140W/NaB-M GMV-Pd160W/NaB-M Product Code CN850W0150 CN850W0140 Cooling kBtu/h Capacity 15.4 17.6 Heating kBtu/h Sound Pressure Level dB(A) Refrigerant R410A R410A Refrigerant Filling Amount Power Supply V/Hz/Ph 380-415/50/3 380-415/50/3 Cooling Power input Heating Cooling Current Heating Circuit breaker...

  • Page 10: Operation Range

    DC Inverter Multi VRF Service Manual 4.2 Operation Range Model Range of outdoor temperature ( ) Cooling 10 (50 )~48 (118.4 ) Heating -20 (-4 )~27 (8 ) 5 PIPING DIAGRAM 5.1 Heat Pump Electronic expansion valve Filter Filter Heat exchanger with axial flow fan 1- way valve Receiver...
  • Page 11 DC Inverter Multi VRF Service Manual CONTROL...

  • Page 12: Control

    DC Inverter Multi VRF Service Manual CONTROL 1 OPERATION FLOWCHART Conne cting To Power Suppl y Initialization Of Bectroni c Expansion Valve Volume:Air Supply Direction Start Indicating Light Is ON Start Indicating Ligh t OFF Stop Start/Stop Display The Last Setting s Of Air Start Start Display:Flickering Is The Protecting...
  • Page 13 DC Inverter Multi VRF Service Manual Cooling Operation Cooling Operation There Is Not Guide Louv er There Is Guide Louv ers Swing Fan Moto r :Operation In The Process Of Preventing Restart Operation? (3 Minut es) Temperature Adjustment? Fan Motor : Stop Electronic Expansion Electronic Expansion Valve : Close...
  • Page 14 DC Inverter Multi VRF Service Manual Heating Operation Heating Operation There Is Not Guide Louv er There Is Guide Louv ers Swing In The Operation Of Defrosting ? In The Process Of Preventing Restart Operation? (3 Minut es) Temperature Adjustment ? In The Process Of Fan Motor : Stop Fan Motor : Stop...

  • Page 15: Main Logic

    DC Inverter Multi VRF Service Manual 2 MAIN LOGIC 2.1 Control Function of Outdoor Unit 1) Compressor Capacity Output The compressor capacity output is calculated according to the required indoor load, which is related to the following factors: whether the indoor unit is started, the set temperature, the indoor ambient temperature, the outdoor ambient temperature, etc.
  • Page 16 DC Inverter Multi VRF Service Manual 60Hz/3min 75Hz/5min 90Hz/ 5min Target frequency Stop of frequency initialization Conversion controller If it is in heating position, cut off the power of 4-way valve for cooling. 4-way valve 480 Step ODU EXV Initializat XX IDU EXV 0 Step Step...
  • Page 17 DC Inverter Multi VRF Service Manual Absolute pressure P 30 P 42 P 49 P 49 value for discharge( ) Shutdown the Turn down one grade (not Turn up Cooling Remain fan forcibly including stopping windshield ) one grade For ultra-high fan speed, you couldn’t turn up the grade anymore; Heating Mode: The fan should run at high fan speed for 35s before the compressor is started, meanwhile, it is not allowed to turn up to ultra-high fan speed within the earlier 3 minutes after the compressor started, but it could...
  • Page 18 DC Inverter Multi VRF Service Manual Timing diagram of the defrosting process Defrosting Process Sequence Chart Heating time marker Defrosting sign Defrosting time marker 70HZ 60HZ Compressor 60HZ 50HZ frequency 40HZ 40HZ 4-way valve High fan speed Outdoor fan 580P Electronic 300P expansion valve...

  • Page 19: Wiredless Remote Controller

    DC Inverter Multi VRF Service Manual 3 WIREDLESS REMOTE CONTROLLER This service manual contain two wireless remote controllers Y512 and YB1FA. Y512 is applicable to all standing type. 3.1 Wiredless Remote Controller Y512 Operation procedure Normal procedure 1) Press the ON/OFF button after the unit is energized, then the unit starts operating. 2) Press MODE button to choose the desired operation mode.

  • Page 20: Wireless Remote Controller Yb1Fa (Optional)

    DC Inverter Multi VRF Service Manual 3.2 Wireless Remote Controller YB1FA (optional) Operation Mode Display (AUTO,COOL,DRY,FAN,HEAT) Sleep Mode Display Temperature Type Display...

  • Page 21: Wired Remote Controller

    DC Inverter Multi VRF Service Manual 4 WIRED REMOTE CONTROLLER 4.1 Wired Controller Z60351F,Z60151F,Z63351F,Z63151F 4.1.1 Operation View ROOM TEMP SET TEMP SWING SLEEP MELT Fig.4.1.1.1 Wired Controller Z60351F,Z60151F Various Components of Wired Remote Controller Operating mode display (Cool, Dry, Fan, Heat) On/Off button Sleep mode display Timer button...
  • Page 22 DC Inverter Multi VRF Service Manual ROOM TEMP SET TEMP SWING SWING MELT Fig4.1.2.2 Wired Controller Z63351F,Z63151F Every part of wired remote controller Operating mode display (Cool, Dry, Fan, Heat) On/Off button Sleep mode display Timer button Environmental temp.display / Malfunction display Swing button Fan control display (automatic, high, media, low) Swing display...

  • Page 23: Wired Controller Xk02

    DC Inverter Multi VRF Service Manual 4.1.3 Installation Fig.4.1.3 Name Casing base, installed into the wall Controller Soleplate Screw M4X25 Controller Panel Notice for installation under the guidance of Fig.4.1.3 Cut off power supply before install the electrical components, it is forbidden to carry out the installation with power on;...
  • Page 24 DC Inverter Multi VRF Service Manual Denotation Name Function Swing Swing function Sleep Sleep states (3 types: sleep 1,sleep2 and sleep 3) Running mode Running modes of the indoor unit (Cooling, Dry, Fan and Heating) Cooling Cooling mode Dry mode Fan mode Heating Heating mode...
  • Page 25 DC Inverter Multi VRF Service Manual Enter/cancel Mode FunctionT imer On/Off Fig.4.2.1.2 Button(s) Function(s) 1. Function selection and cancellation; Enter/cancel 2. Press it for 5s to examine the outdoor ambient temperature. 1.Running temperature setting of the indoor unit, range : 16~30 2.Timer setting, range:0.5-24hr 3.Switchover between quiet/auto quiet or among sleep1/ sleep2 / sleep 3 Setting of the high/middle/low/auto fan speed...
  • Page 26 DC Inverter Multi VRF Service Manual 4.2.2 Dimension Fig.4.2.2 4.2.3 Installation of Wired Controller Fig.4.2.3 Socket housing Name Base plate of controller Screw M4X25 Control Panel Screw ST2.2X6.5 installed in wall Notice for installation under the guidance of Fig.4.2.3 Cut off power supply before install the electrical components, it is forbidden to carry out the installation with power on;...

  • Page 27: Regional Controller

    DC Inverter Multi VRF Service Manual 5 REGIONAL CONTROLLER 5.1 Function Region monitoring control and region wired control are the two main control functions for region controller. Region monitoring controller can monitor or control 16 indoor units of a group for inquiry and single or centralized control.

  • Page 28: Operation View

    DC Inverter Multi VRF Service Manual 5.2 Operation View SINGLE FUNC INQUIRY CENTER MODE ROOM TEMP ERROR SHEILD SPEED FORCE AUTO MELT LOCK SWING TIMER SWING ON OFF TIMER ON/OFF Fig.5.2 Instruction to functions of buttons (Table 5.2) Name Function FUNC A.

  • Page 29: Display View

    DC Inverter Multi VRF Service Manual 5.3 Display View SINGLE FUNC INQUIRY CENTER MODE ROOM TEMP ERROR SHEILD SPEED FORCE AUTO MELT LOCK SWING TIMER SWING ON OFF TIMER ON/OFF Fig.5.3 Display name Instruction to display Inquiry state, “INQUIRY” is displayed. Control mode Single control state,”SINGLE”...

  • Page 30: Connection Between Controller And Unit

    DC Inverter Multi VRF Service Manual Region monitoring controller A: Inquiry state: “LOCK” is displayed when selected indoor unit is locked. Lock B: Control state: “LOCK” is displayed during setting or giving the lock order. Region wired controller: “LOCK” is displayed when selected unit is locked in long-distance monitoring.

  • Page 31: Smart Zone Controller

    DC Inverter Multi VRF Service Manual Note: During following connection of wirings, pay special attention to them to avoid malfunction to units for electromagnetic interference. 1 ) Keep the signal lines or wirings (communication) of region controller or wired controller at least 20 cm from the power cords or connecting lines between indoors and outdoors to prevent abnormal communication.

  • Page 32: Display View

    DC Inverter Multi VRF Service Manual It is used to set the timing or on/off time of the selected indoor Timer/Time unit as well as to set the clock of the system. It is used for the switchover between unit 2 and unit 10; 2/10 Under the timing or clock setting status, it indicates Tuesday.

  • Page 33: Network Topological Diagram

    DC Inverter Multi VRF Service Manual 6.4 Network Topological Diagram 6.4.1 Network of Simple Centralized Controller: Max.16 Max.16 Max.16 VRF System VRF System VRF System Port 1 (VRF) Port 2 (VRF) Port 3 (VRF) Smart Zone Controller Max.16 Indoor Units Fig.

  • Page 34: Installation And Debugging

    DC Inverter Multi VRF Service Manual 6.5 Installation and Debugging 6.5.1 Installation 5.5.1.1 Installation Dimension Diagram Fig.6.5.1 Installation Dimensions Diagram 6.5.1.2 Interfaces See Fig.6.5.2 for the interfaces of the display board and see Fig.6.5.3 for the interfaces of the power supply module.
  • Page 35 Preparation and connection of the communication line for the duct type unit 1 ) The communication line for the duct type unit is the two-core line provided by Gree (one end is the two- core head and the other end is the crystal head, code: 40113325) 2 ) Where there are N sets of duct type units, then N+1 communication lines are needed.
  • Page 36 DC Inverter Multi VRF Service Manual Fig.6.5.5 Concealed Cable Installation 2 (up-down wiring) Fig. 6.5.6 Installation Diagram...
  • Page 37 DC Inverter Multi VRF Service Manual Serial No. Description Wall Power Supply Box (86) Bottom Base(including power supply module board) Screw Top Cover(including the display board) After the installation, it is necessary to make the debugging to guarantee the normal communication. 6.5.2 Debugging and Viewing the Port No.

  • Page 38: Attachment

    DC Inverter Multi VRF Service Manual Fig.6.5.8 Label of the Smart Zone Controller 6.6 Attachment Error code list: Errors code list of Multi VRF Indoor Units Code Description High pressure protection of the compressor Anti-freezing protection of the indoor unit Low pressure protection of the compressor Discharge temperature protection of the compressor Over-current protection, overload protection of compressor, drive error...

  • Page 39: Centralized Controller

    DC Inverter Multi VRF Service Manual 7 CENTRALIZED CONTROLLER 7.1 Central Control ZJ7011 7.1.1 Function Main characteristics of Centralized Controller: A set of Centralized Controller can control 64 communication modules and can connect to as much as control On/Off, Mode, Temperature setting and Timer On/Off of indoor unit etc. It can realize the central, single or select control to all indoor units.
  • Page 40 DC Inverter Multi VRF Service Manual This central control has Sequence On function, that enable conduction to sequence ALL ON control to communication modular in interval of 2 seconds, communication modular controls Sequence On of indoor units (to lower impact to power network). This central control has Sequence Off function, that enable conduction of sequence ALL OFF control to communication modular in interval of 2 seconds, communication module...
  • Page 41 DC Inverter Multi VRF Service Manual 7.1.3 Display View AUTO COOL DRY FAN HEAT AUTO LOW MID HIGH INDOOR UNIT ERROR PAGE SET TEMP. ROOM TEMP. ERR CODE CHECK TEST DOOR MONITORING SWING SLEEP MELT MAIN TIMER ON OFF DETECTING CENTER ADDRESS CTRL MODE...

  • Page 42: Centralized Controller Ce51-24/E(M)

    DC Inverter Multi VRF Service Manual 7.2 Centralized Controller CE51-24/E(M) 7.2.1 Function Used in multi-VRF system, a set of centralized controller can connect with 64 communication modules to control 1024 sets of indoor units. Through it, indoor unit’s ON/OFF, operation mode, set temperature, fan speed, swing state etc.
  • Page 43 DC Inverter Multi VRF Service Manual Description Function ALL ON Start up all indoor units ALL OFF Stop all indoor units BACK Back to the previous menu of current display. GROUP Press this button in query state to query and set group information TIME SET Set system clock CENTER CONTROL...
  • Page 44 DC Inverter Multi VRF Service Manual Description Instruction to Displaying Contents “GROUP” displayed during group control operation or grouping indoor units CENTER/GROUP “CENTER” displayed during center control ,center shield or center timer operation. REGION NO. Online or selected region No. displayed(Note 1) INDOOR UNIT NO.
  • Page 45 DC Inverter Multi VRF Service Manual (2) Make 4 pieces of wooden or plastic chucks Wooden chucks or plastic chucks Wall Fig.7.2.4.2 To be installed in the control cabinet: Fig.7.2.4.3 2) Install the electric box cover on the wall or in the control cabinet. Wire hole Wire hole Fig.6.2.4.4...
  • Page 46 DC Inverter Multi VRF Service Manual Communication joint Power wiring terminal LNNC Fig.7.2.4.5 upper cabinet and lower cabinet Lower cabinet Upper cabinet Buckle Fig.7.2.4.6 Screw hole Fig.7.2.4.7 6) Re-assemble the upper cabinet and debugging can begin after this.
  • Page 47 2 ) The communication wire of communication modules or centralized controller shall be equipped according to the distance in the project. 3 ) Gree provides a piece of 2-core communication wire of 1m (the user shall extend the wire according to actual condition).
  • Page 48 DC Inverter Multi VRF Service Manual Fig.7.2.6.2 Connection Manner of Crystal Connector, Communication Line and Magnetic Ring Fig.7.2.6.3 Connection Location of Crystal Connector, Communication Line and Magnetic Ring After completion of installing centralized controller and matched communication modules, the technician shall set address and perform debugging of the communication modules to ensure normal communication.
  • Page 49 DC Inverter Multi VRF Service Manual 2) DIP1 setting The 8-bit DIP switch in the communication module is for Modbus equipment address setting. It is integrated by SA2 and SA3 on PCB, but marked by DIP1. Dialing to ON means 0, and dialing to number end means 1.
  • Page 50 DC Inverter Multi VRF Service Manual Installation Table Table 3 Installation Table Region No. Indoor unit no. Present indoor unit no. Indoor unit location 08-03 No.3 indoor unit in Room B Floor A Note: 1 ) Region no. indicates online region no.1-64, displayed by the centralized controller. 2 ) Indoor unit no.
  • Page 51 DC Inverter Multi VRF Service Manual DIP table of communication module DIP table of communication module Address Address DIP1 DIP1 value value...

  • Page 52: Monitoring Software

    DC Inverter Multi VRF Service Manual 8 MONITORING SOFTWARE 8.1 Function As the development and improvement of manufacturing technology and in order to solve the problems of easy and reliable to operate must be provided to the users for daily management and maintenance. So this long-distance monitoring system combining electronic communication and computer technologies is developed to collect the running state of the units and to monitor and control the units from a long distance.
  • Page 53 DC Inverter Multi VRF Service Manual The communication cable and heavy-current wire should be separated and the distance between them can not be below 15cm Line A and line B of Bus 485 should respectively correspond with line A and line B. Crystal head(crystal head buckle is downwards) 8.2.2 Wiring Diagram Description of above communication cables...

  • Page 54: Hardware

    DC Inverter Multi VRF Service Manual 8.3 Hardware 8.3.1 Introduction to Main Devices 8.3.1.1 R232-R485 Optoelectronic Isolated Converter (standard parts) 1) Function Introduction: R232-R485 optoelectronic Isolated converter is used to convert the signal 232 of PC COM and signal of bus 485.
  • Page 55 DC Inverter Multi VRF Service Manual 4) Installation Criteria: It must be installed indoors to avoid knock, insolation or rainwater and is better to be put in the monitoring room. This device must be the original one in the factory. Never self-buy the models for replacement. 220-V AC socket must be installed for independent power supply.
  • Page 56 DC Inverter Multi VRF Service Manual 4) Installation Criteria: It must be installed indoors to avoid knock, insolation or rainwater and is better to be put in centralized control cabinet This device must be the original one in the factory. Never self-buy the models for replacement. 220-V AC socket must be installed for independent power supply.
  • Page 57 DC Inverter Multi VRF Service Manual 3) Installation Dimension: Description Distance to top side(mm) Diameter(mm) Hanging Hole 4) Use Instruction to Communication Module The Sketch Map of COM, as shown below: With PC or other With air conditioner communication modules Power RS232 COM1...
  • Page 58 DC Inverter Multi VRF Service Manual 2) Dimension: The following dimension is for reference. The cabinet is designed according to 10 communication modules into. If more modules are needed, the cabinet should be designed once again. The internal structure should accord to actual state.

  • Page 59: Detection Control Board

    9 DETECTION CONTROL BOARD 9.1 Gate-control Function This detection control board is only suitable for Gree multi-variable (GMV) indoor unit with gate-control function. The AC will run after plugging in gate-control card and stop running after plugging out the card. Upon plugging out the card to stop the unit, the running states of the unit will be memorized.

  • Page 60: Detection Control Board Interface Sketch Is Shown In Fig.2

    DC Inverter Multi VRF Service Manual 9.3 Detection Control Board Interface Sketch is shown in Fig.2: Fig2: Detection Control Board Interface Sketch The gate-control function can be realized after the detective interface of detection control board connects with interface of gate-control card and signal interface of it connects with the mainboard. 9.4 Products Parameters Model: MK03 gate controller Working Voltage: AC 220-240V, 50HZ or DC +5V-+24V...
  • Page 61 DC Inverter Multi VRF Service Manual Fig.3 is about installation process of detection control board. The following items should be attended. 1. Installation must be performed by professionals. Either 220-240V or DC 5-24V is ok. 2. Cut off the power of heavy current wire covered in the mounting hole in the wall before installation. Never perform the installation with electricity.
  • Page 62 DC Inverter Multi VRF Service Manual INSTALLATION...

  • Page 63: Installation

    DC Inverter Multi VRF Service Manual INSTALLATION 1 PRECAUTIONS FOR INSTALLATION 1.1 Precautions for installation Before installation, please ensure if the installing site, power ratings, possible operating range (pipe distance, height difference between indoor and outdoor unit, power voltage) and installing space are correct and suitable.

  • Page 64: Key Points Of Installation

    DC Inverter Multi VRF Service Manual To ensure correct drainage of water, the drainage hose shall be installed according to the installation instructions. Also the heat insulation shall be provided to avoid condensing.Improper installation of the pipe might result in water leakage and lead to possible wetting of the articles in the room. 1.2 Key Points of Installation Installation Procedures Description and Acceptance Criteria...
  • Page 65 DC Inverter Multi VRF Service Manual Select the installing position correctly. Build the foundation according to the anchor bolt position and the dimension of outdoor unit; Installation of outdoor unit Build the damping device properly. Avoid sharp knock when handling the outdoor unit. The inclination angle shall not be higher than 15°...

  • Page 66: Flow Chart Of Installation

    DC Inverter Multi VRF Service Manual 2 FLOW CHART OF INSTALLATION Purchase material Install Install Install outdoor unit outdoor fan connecting pipe Weld Connect Install remote Connect Connect Install Install power cord monitoring control communication cable power cord drain pipe air duct Purge and leak test under pressure...

  • Page 67: Installation Of Outdoor Unit

    DC Inverter Multi VRF Service Manual 3 INSTALLATION OF OUTDOOR UNIT 3.1 Cautions for installation of side discharge outdoor unit To ensure good operation of the air conditioner, the selection of installing position must be in accordance with the following principles: and that enough space shall be maintained around the machine for repair.

  • Page 68: Dimensions Data

    DC Inverter Multi VRF Service Manual 3.3 Dimensions Data Appearance of GMV(L)-Pd100W/NaB-K,GMV(L)- Pd 120W/NaB-K,GMV(L)- Pd 140W/NaB-K,GMV(L)- Pd 160W/NaB-K,GMV- Pd 140W/NaB-M,GMV- Pd 160W/NaB-M 3.4 Installation space requirements 2000...

  • Page 69: Installation Requirements Of Refrigerant Piping

    4.3 Size of Connection Pipe 4.3.1 The size of the pipe (main pipe) from the outdoor unit to the 1st manifold is same as the size of outdoor pipe. Size of Outdoor Pipe Model GMV-Pd140W/NaB-K GMV-Pd160W/NaB-K GMV-Pd100W/NaB-K GMV-Pd120W/NaB-K Item GMV-Pd140W/NaB-M GMV-Pd160W/NaB-M Liquid pipe Connection...

  • Page 70: Installation Of Refrigerant Piping

    DC Inverter Multi VRF Service Manual 4.3.3 The size of the pipe (indoor pipe) between manifold and indoor unit is same as the size of indoor pipe pipe from the 1st branch to this indoor unit shall be increased by one level). Capacity of Indoor Unit Air pipe Liquid pipe...

  • Page 71: Three Principles Of Refrigerant Piping Installation

    DC Inverter Multi VRF Service Manual 5.2 Three Principles of Refrigerant Piping Installation Observe the three principles of refrigerant piping: Key Factors Measures to Avoid Failure Invasion of outside water Fabrication of Vacuuming and Example: Rainwater, engineering water Purge drying Invasion of indoor condensate Expel with nitrogen 0.05~0.3Mpa Formation of oxides inside...

  • Page 72: Management And Machining Of Refrigerant Piping

    DC Inverter Multi VRF Service Manual 5.4.2 Fixing of vertical pipe 5.4.3 Fixing of other points Measures shall be taken to prevent the extension or shrinkage of pipes from causing excessive loads to some positions, machine joint and waterproof points. Generally, such positions refer to the branch pipe joint, pipe ends, four sides of indoor unit and wall-cross hole.
  • Page 73 DC Inverter Multi VRF Service Manual 5.5.3 Measuring (To reduce the resistance and length of copper pipe), the dimension of main refrigerant pipe shall be so taken that the bends shall be minimized, the radius of bend section shall be increased and the upstream and downstream section shall be reduced.
  • Page 74 DC Inverter Multi VRF Service Manual Too much eliminated The contact face becomes small Flared nut 5.5.5 Pipe bending Work Methods 2) Machining with spring pipe bender …….. Bend by inserting the spring into copper pipe or sheathing 4) Machining with electric pipe bender (hydraulic)……Suitable for mass machining of fine and coarse Advantage Decrease the weld joint, thus reduce the possibility of leakage and oxidization.
  • Page 75 DC Inverter Multi VRF Service Manual Steel pipe Jacketed bender Inner side wrinkled and deformed Bent, with fissure occurring on this side Section The copper pipe might be deformed even if it is not bent Correct section Bend section 5.5.6 Flaring pipe.

  • Page 76: Installation Of Refrigerant Piping

    DC Inverter Multi VRF Service Manual 5.6 Installation of Refrigerant Piping 5.6.1 Precautions on piping works At the site of transport, storage and construction, the two ends of copper pipes shall be sealed with plastic sealing caps. Before welding, copper pipes must be cleaned (washing the inner side of pipe with alcohol) to ensure no dust and no water in pipeline Nitrogen-filled welding shall be used for the welding of copper pipes.
  • Page 77 If the pipe size selected on site is different from the size of branch connector, please use the pipe cutter to cut from the middle of different connection pipes and remove the burrs. Then, insert the copper pipe to appropriate depth. The branch pipes from Gree are all provided with positioning mark. Branch pipe...

  • Page 78: Welding Of Copper Pipe

    DC Inverter Multi VRF Service Manual The copper pipe shall not be inserted into the branch pipe too deep. Branch pipe Copper pipe Correct connection Wrong connection 5.7 Welding of Copper Pipe 5.7.1 Braze welding Materials for braze welding There are two kinds of braze welding, soft braze welding and hard braze welding. Hard braze welding is required in this case.
  • Page 79 DC Inverter Multi VRF Service Manual Weld the pipe approx. 1m before and behind the reflared position, and wrap with thernal insulation materials. Then, weld on higher position. Approx. 1m Approx. 1m Drainage pipe Difficult to weld at this position 5.7.4 Operation order Basic procedures for welding: Assemble copper pipes...
  • Page 80 DC Inverter Multi VRF Service Manual Ungrease……………………If any oil stain is existent, acetone or spirit solvent shall be used for ungrease treatment. At the same time, compressed air at 0.8MPa (gauge pressure) shall be used for cleaning The cleaning shall be repeated not less than 3 times, until there is no dirt discharged. b.
  • Page 81 DC Inverter Multi VRF Service Manual Welding seam should have smooth surface. Fillet should be even and full with natural arc transition. Braze welding connector should be free from defects such as over-burning, welding blockage, crack, rough surface of welding seam and burning through. Welding seam should be free from defects such as pore, slag inclusion, Weld spot 5.7.5 Others When braze welding is to be performed underneath, a simple support shall be built, such as two ladders.

  • Page 82: Cleaning Of Refrigerant Piping

    DC Inverter Multi VRF Service Manual Cooling o avoid getting a burn in following processes, common wet cloth (humidity content is low, meaning that there shall not be water drips when welded part is cooled; and because shrinkage factor of copper is different from that of welding material, too quick cooling that would cause cracking of braze welding shall be avoided) can be used for cooling welded parts.

  • Page 83: Pressure Maintaining And Leak Hunting

    DC Inverter Multi VRF Service Manual h. Repeat the above procedures on indoor unit B i. After cleaning of liquid pipe, gas pipe shall be cleaned in the same way. 5.9 Pressure Maintaining and Leak Hunting 5.9.1 Pressure maintaining of refrigerant piping After refrigerant piping of a system is welded, outdoor unit side.

  • Page 84: Heat Preservation Of Refrigerant Piping

    DC Inverter Multi VRF Service Manual 5.9.2 Pressure maintaining and leak hunting of the system(with refrigerant piping in connection with indoor unit and outdoor unit) When refrigerant piping is to be installed, pressure maintaining and leak hunting is required for the piping. After refrigerant piping is in connection with indoor unit and outdoor unit, pressure maintaining and leak hunting is also required.

  • Page 85: Vacuum Pumping

    DC Inverter Multi VRF Service Manual pipes shall be sealed with self-adhesive sticker. Wrap the thermal insulation pipes with tapes, thus to extend their ageing time 5.10.2 Cautions: The thermal insulation materials shall be able to withstand the pipe temperature. For heat pump unit, it is required to withstand a temperature not lower than 70 on liquid pipe side and not lower than 120 on gas pipe side.

  • Page 86: Refrigerant Charge

    DC Inverter Multi VRF Service Manual 5.11.3 Vacuum pumping The steps are as follows: a. Expel the nitrogen after leakage detection; Connect the pressure gauge to Freon nozzle on outdoor liquid valve and gas valve, and connect a vacuum pump. Then, establish vacuum simultaneously from high pressure side and low pressure side. Pressure gauge connector valve Connector on gas side Connector on liquid side...

  • Page 87: Installation Of Condensate Pipe

    DC Inverter Multi VRF Service Manual 5.12.2 Steps of refrigerant charge are as follows: a. The connecting hose of refrigerant cylinder shall be connected to the connector of the pressure gauge. The valve VH shall be opened to discharge air in the hose. Then, the high pressure end of the pressure gauge Pressure gauge connector valve Refrigerant cylinder Gas liquid...
  • Page 88 DC Inverter Multi VRF Service Manual 6.2.3 Distance between hanger frames: Outer diameter of water pipe (mm) Spacing between horizontal pipes (mm) 1000 1500 Spacing between standpipes (mm) 1500 2000 Each standpipe shall have two hanger frames at least. (1cm/1m) Over 1/100 6.2.5 When connecting the 3-way section of condensate pipe, the 2-way straight section on 3-way pipe shall be on the same gradient.
  • Page 89 DC Inverter Multi VRF Service Manual Gradient over 1/100 use glue water, thus to ensure easy repair. 6.2.14 Installation requirements for auxiliary drainage pipe Pipe clamp Drainage PVC pipe Unit drainage pipe Drainage hose The auxiliary drainage pipe must be thermally insulated: Thermal insulation of condensate pipe Pipe cover...
  • Page 90 DC Inverter Multi VRF Service Manual outdoor air. Therefore, U-type water trap shall be designed on the drainage side of each indoor unit. Indoor unit. Install water trap as shown below; Install one water trap for each unit. Installation of water trap shall consider easy cleaning in the future. Joint Indoor Indoor...

  • Page 91: Test For Condensate Pipe

    DC Inverter Multi VRF Service Manual NO3: Connection of horizontal pipe Connection of horizontal pipe Drainage pipe is requisite for air conditioner unit. During cooling, the moisture in the air will condense on the surface of evaporator. Such condensing water must be drained out of the unit. Meanwhile, the drainage pipe has an important role to determine if the air conditioner can plays its full functions.

  • Page 92: Electrical Installation

    DC Inverter Multi VRF Service Manual 7 ELECTRICAL INSTALLATION 7.1 Precautions for Electrical Installation Carry out installation according to national cabling rules. Rated supply voltage and special circuit for air conditioner must be used. Do not pull the power cables with force. All the electric installations must be carried out by specialist technicians in accordance with the local laws, rules and these instructions.

  • Page 93: Wiring Sketch Map

    Connection Schematics for Indoor / Outdoor Power Cords and Communication Line 7.4 Dial-up Gree DC Multi VRF unit is provided with three dial-up, i.e. function dial-up, address dial-up and capacity dial-up. ou may adjust the function dial-up to set the control, mode and functions of the unit; adjust the address dial-up to set the matching relation between indoor unit and wired controller;...
  • Page 94 DC Inverter Multi VRF Service Manual Functional description of function dial-up: DIP swicth 1 (S/R): Setting of memory mode, including the standby mode and restoration mode. The standby mode refers to that the previous parameters will be kept but the unit will not run automatically after the power supply is resumed.
  • Page 95 DC Inverter Multi VRF Service Manual Address code S1 Functional dial switch S7 Capacity code Mainboard of 5-bit functional dial-up Functional dial Address code S1 switch S7...
  • Page 96 DC Inverter Multi VRF Service Manual Mainboard of 4-bit functional dial-up 7.4.2 Address code Address dial-up must be set for the multi indoor units; otherwise the abnormal communication will be caused to the unit. The address code has 4-bit dial-up in total. The highest address is 16 and the lowest address is 1.
  • Page 97 DC Inverter Multi VRF Service Manual dial switch are dialed to the opposite end of “ON”, and the pin 4 is dialed to “ON”. Address 8, dial-up value 0111 Address 8, dial-up value 1010 7.4.3 Capacity Code On the mainboard of indoor unit, two 4-bit DIP switches are used to distribute the address and capacity of indoor units.
  • Page 98 DC Inverter Multi VRF Service Manual...
  • Page 99 DC Inverter Multi VRF Service Manual MAINTENANCE...

  • Page 100: Maintenance

    DC Inverter Multi VRF Service Manual MAINTENANCE 1 List of Unit Errors 1.1 List of Error Display on Wired Controller Error Error Source of Notes on Control Code Description Error Signal Compressor The high pressure protection value is 4.2MPa. When it is detected three times High-pressure high-pressure successively that a compressor is under high pressure, this compressor will be...

  • Page 101: Display Code On Digital Tube Of Outdoor Mainboard

    DC Inverter Multi VRF Service Manual Test for 30 seconds successively to check if the temperature sensor is disconnected. If yes, alarm will be sent; otherwise no processing will be made. If the controller of outdoor unit detects failure of outdoor sensor under open circuit, short circuit Outdoor ambient Outdoor and excess of test value, the outdoor unit will execute the following default...

  • Page 102: Flow Chart Of Troubleshooting

    DC Inverter Multi VRF Service Manual 2 FLOW CHART OF TROUBLESHOOTING 2.1 High-pressure Protection High-pressure protection Use pressure gauge to Replace the mainboard Measure if the pressure switch measure if the pressure is is normal of outdoor unit really high? Refer to the Instruction Check if the operation mode of Replace the pressure switch...

  • Page 103: Low-Pressure Protection

    DC Inverter Multi VRF Service Manual 2.2 Low-pressure Protection Low-pressure protection Use pressure gauge Refer to low pressure sensor to measure if the pressure error is really low? Add refrigerant according to the nominal refrigerant volume Check if the refrigerant on nameplate and the calculated charge volume in the system is too low? Check if the operation...

  • Page 104: Exhaust Temperature Protection

    DC Inverter Multi VRF Service Manual 2.3 Exhaust Temperature Protection Exhaust Temperature Protection Measure if the Measure if the exhaust temperature of compressor resistance of temperature sensor is correct? When the exhaust temperature of compressor is Replace the corresponding Replace the mainboard of outdoor unit higher than 107 , check if the corresponding exhaust temperature sensor liquid bypass plug is connected...

  • Page 105: Compressor Overcurrent Protection

    DC Inverter Multi VRF Service Manual 2.4 Compressor overcurrent protection Abnormal overcurrent error If the Adjust the compressor wiring compressor wiring is correct If the current value is higher than Replace the overcurrent protector the preset value of protector If the high voltage of unit Refer to high voltage protection is normal...
  • Page 106 DC Inverter Multi VRF Service Manual Overcurrent occurs in operation, i.e. the indicator will display the current protection just after startup. Inspect match of indoor unit Adjust the indoor Within 135% unit to suitable capacity Inspect charging volume? Adjust it to be within Over charge the permitted range Voltage of DC...

  • Page 107: Communication Error

    DC Inverter Multi VRF Service Manual 2.5 Communication error Communication error Check if the Check the orientation communication line of indoor of plug and socket unit is connected Measure if the Replace communication line is through? the communication line Check if the Check the orientation communication line of indoor and of plug and socket...

  • Page 108: Water-Full Protection

    DC Inverter Multi VRF Service Manual 2.6 Water-full protection Fault display If the voltage Check if of liquid level switch terminal Replace the mainboard of indoor unit the water overflows? is correct? Check the liquid level switch If the voltage If the drainage Replace the mainboard of indoor unit of drainage pump terminal...

  • Page 109: No Energization To The Unit And Mainboard

    DC Inverter Multi VRF Service Manual 2.8 No energization to the unit and mainboard Deenergizing of unit and mainboard Is power Is power supply of wiring supply of wiring board board normal? L and N 220V? Is air switch turned ON Turn air switch to ON Is input of filter board energizing? Air switch is damaged or loose...

  • Page 110: Pfc Protection

    DC Inverter Multi VRF Service Manual 2.9 PFC Protection E5 is displayed on the wired controller Monitoring Nixie tube of display mainboar d PFC abnormal Hc is displayed Inspect the mainboar d 1 min af ter power off or the buss voltage is below 36V Is it wet,dirty or short-circuit?

  • Page 111: Ipm Protecion

    DC Inverter Multi VRF Service Manual 2.10 IPM Protecion E5 is displayed on the wired controller Monitoring Nixie tube of display mainboard Display H5 IPM protection Inspect the mainboard 1 min after power off or the buss voltage is below 36V Is it wet,dirty or short-circuit? Dry, and clean it or...

  • Page 112: Trip

    DC Inverter Multi VRF Service Manual 2.11 Trip Trip Is leak switch trip open? Does switch capacity meet the requirements? Mount the electric switch Does it trip according to the capacity upon energization? requirements. Leakage current is large. The system is abnormal Check the leakage spot Check the compressor wiring and winding for...

  • Page 113: Superheat Protection Of Radiator

    DC Inverter Multi VRF Service Manual 2.12 Superheat Protection of Radiator E5 is displayed on the wired controller Monitoring Nixie tube of display mainboar d Superheat protection P8 is displayed of radiator If short circuit happens to air outtake and air return Is radiating of outdoor of outdoor unit, the unit in good state?

  • Page 114: Dc Overvoltage Protection

    DC Inverter Multi VRF Service Manual 2.13 DC Overvoltage Protection E5 is displayed on the wired controller Monitoring Nixie tube of display mainboard Overvoltage PH is displayed protection of DC bus Is input voltage within the running range (185~264VAC) Does it occur during running of compressor? How many...

  • Page 115: Power Distribution

    (The thick lien represents power line while thin line represents the control line.) 3.2 Introduction of Major Electrical Elements Name Photo Function Introduction Filter board It used for GMV-Pd100W/NaB-K, GMV-Pd120W/NaB-K, GMV-Pd140W/NaB-K, GMV-Pd160W/NaB-K, Main functions: 1) Filter the power interference and ensure the anti-interference ability of the unit under poor quality of power supply;...
  • Page 116 DC Inverter Multi VRF Service Manual Air switch It used for For connecting and disconnecting GMV-Pd100W/NaB-K, the circuit of main loop, provided with GMV-Pd120W/NaB-K, overcurrent and short-circuit protection. GMV-Pd140W/NaB-K, GMV-Pd160W/NaB-K, IPM module It used for GMV-Pd100W/NaB-K, GMV-Pd120W/NaB-K, The IPM module integrates 3 pairs of...

  • Page 117: Wiring Diadram

    DC Inverter Multi VRF Service Manual 3.3 Wiring diadram NOTE: This drawing is just for reference; please always refer to the electric wiring stuck to the unit for actual wiring. GMV-Pd100W/NaB-K,GMV-Pd120W/NaB-K,GMV-Pd140W/NaB-K GMV-Pd160W/NaB-K...
  • Page 118 DC Inverter Multi VRF Service Manual GMV-Pd140W/NaB-M, GMV-Pd160W/NaB-M,...

  • Page 119: Disassembly And Assembly Procedure Of Main Parts

    DC Inverter Multi VRF Service Manual 4 DISASSEMBLY AND ASSEMBLY PROCEDURE OF MAIN PARTS Disassembly and Assembly of the Front Panel Remark: Be sure to cut off the power supply before disassembling the panel. Procedures Diagrams Operating Instructions 1. Disassemble the cover plate.
  • Page 120 DC Inverter Multi VRF Service Manual Disassembly and Assembly of Motor and Fan Blades Remark: Be sure to cut off power supply before disassembling motor and fan blades Procedures Dirgrams Operating Introductions 1. Disassemble the front grille front grille by using a screwdriver; 2) Remove the grille.
  • Page 121 DC Inverter Multi VRF Service Manual 5. Assemble the new motor. screws tightly by using a spanner; 2) Connect the power cord to the motor. 6. Assemble the Assemble the disassembled main whole unit. parts as per the reverse disassembly order mentioned above.
  • Page 122 DC Inverter Multi VRF Service Manual Removal and Installation of Compressor Remark: Before removing the compressor, make sure that there is no refrigerant inside the pipe system and that the power has been cut off. Step Illustration Handling Instruction 1. Remove the power cord Mark the power cable colors and corresponding...
  • Page 123 DC Inverter Multi VRF Service Manual 5. Fix the new compressor to chassis onto the base seat. Use spanner to remove the 6. Connect the suction and exhaust pipe of compressor of compressor and connect to system pipeline it to the compressor Replace and lock Note: During welding, take care not the compressor.
  • Page 124 DC Inverter Multi VRF Service Manual Disassembly and Assembly of 4-way valve Remark: Before removing the compressor, make sure that there is no refrigerant inside the pipe system and that the power has been cut off. Step Illustration Handling Instruction 1.Remove the Magnet Coil of 4-way valve.
  • Page 125 DC Inverter Multi VRF Service Manual Removal and Installation of electronic expansion valve Remark: Before removing the compressor, make sure that there is no refrigerant inside the pipe system and that the power has been cut off. Step Illustration Handling Instruction 1 .
  • Page 126 DC Inverter Multi VRF Service Manual Removal and Installation of Oil Separator Remark: Before removing the compressor, make sure that there is no refrigerant inside the pipe system and that the power has been cut off. Step Illustration Handling Instruction 1.
  • Page 127 DC Inverter Multi VRF Service Manual 5. Weld the oil separator to the connection pipe separator sub-assembly. Note: During welding, take care not Weld the three joints...

  • Page 128: Exploded Views And Part List

    DC Inverter Multi VRF Service Manual 5 EXPLODED VIEWS AND PART LIST GMV-Pd100W/NaB-K,GMV-Pd120W/NaB-K,GMV-Pd140W/NaB-K,GMV-Pd160W/NaB-K GMV-Pd100W/NaB-K for CN850W0072,GMV-Pd120W/NaB-K for CN850W0012 ,GMV-Pd140W/NaB-K for CN850W0022,Part List Part Name Code Qty. Top Cover 01255013P Electric Box Cover 01424235 Electric Box Assy 01395174 Motor Support Sub-Assy...
  • Page 129 DC Inverter Multi VRF Service Manual Gas by-pass valve sub-assy 07334329 Electromagnetic Valve 43000054 4-way Valve Sub-Assy 04144169 4-way Valve 43000338 Magnet Coil 4300040029 Pressure Protect Switch 46020007 Strainer 07210037 Clapboard Sub-Assy 1 01244111 00205224 electrical heater 765152123 Chassis Sub-assy 01194706P Inhalation Tube Sub-Assy 04674170...
  • Page 130 DC Inverter Multi VRF Service Manual GMV-Pd160W/NaB-K for CN850W0032 Part List Part Name Code Qty. Top Cover 01255013P Electric Box Cover 01424235 Electric Box Assy 01395173 Motor Support Sub-Assy 01804113 Clapboard Sub-Assy 2 01244136 Condenser support sub-assy 01894119 Fan Motor 15704113 Axial Flow Fan 10338731...
  • Page 131 DC Inverter Multi VRF Service Manual Capacitor CBB61 33010037 Temperature Sensor 3900028004G Rear Grill 01475432 Temperature Sensor 3900028005G Radiator 49010007 Terminal Board 42011242 Reactor 43138004 Drainage Plug 06813401 Drainage Connecter 06123401 GMV-Pd140W/NaB-M ,GMV-Pd160W/NaB-M GMV-Pd140W/NaB-M for CN850W0032,GMV-Pd160W/NaB-M for CN850W0140,Part List Part Name Code Qty.
  • Page 132 DC Inverter Multi VRF Service Manual Axial Flow Fan 10338731 Fan Motor 1570411301 Front Side Plate Sub-Assy 01305430 Cabinet 01435436 Front grill 22414102 Magnet Coil 4304000403 Gas by-pass valve sub-assy 07334329 Electromagnetic Valve 43000054 4-way Valve Sub-Assy 04144159 4-way Valve 43000338 Magnet Coil 4300040029...
  • Page 133 JF00300208...

This manual is also suitable for:

Gmv-pd120w/nab-kGmv-pd140w/nab-kGmv-pd160w/nab-kGmv-pd140w/nab-mGmv-pd160w/nab-m

Table of Contents