Gree CN850W0190 Service Manual
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Gree CN850W0190 Service Manual

Compact multi vrf unit
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GMV5 COMPACT MULTI VRF UNIT
SERVICE MANUAL
R410A/50/60Hz

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Summary of Contents for Gree CN850W0190

  • Page 1 GMV5 COMPACT MULTI VRF UNIT SERVICE MANUAL R410A/50/60Hz...

  • Page 2: Table Of Contents

    CONTENTS PRODUCT ........................ 2 1 PRODUCT LIST ..........................2 2 PRODUCT FEATURES........................2 3 SPECIFICATIONS..........................4 4 PRODUCT CAPACITY CORRECTION ....................5 5 PRINCIPLE OF OPERATION......................7 CONTROL ......................10 1 UNITS CONTROL ......................... 10 2 WIRED CONTROLLER ........................18 3 REMOTE CONTROLLER .......................
  • Page 3 GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL PRODUCT PRODUCT...

  • Page 4: Product

    CN850W0190 2 PRODUCT FEATURES GREE GMV5 Compact series All DC Inverter VRF outdoor units (R410A) are based on GREE DC Inverter compressor technology and special designed for the residential apartments, commercial offices and super markets. And the capacity range of GMV5 Compact series outdoor units is 22.4 kW, 25 kW and 28 kW.
  • Page 5  New oil return technology Gree active balancing oil return technology provides a new method for controlling the oil level of parallel compressor, which makes the oil level automatically adjust near the hole for balancing oil when the compressor is runnig to prevent the compressor from running in short of oil for long time and avoid the damage.

  • Page 6: Specifications

    3 SPECIFICATIONS 3.1 Specifications Model GMV-224WL/A-X GMV-250WL/A-X GMV-280WL/A-X Product Code CN850W0200 CN850W0210 CN850W0190 Cooling Capac ity 22.4 Heating Capacity Air Flow V olume 9000 9000 9000 Sound Pressure dB(A) Level...

  • Page 7: Product Capacity Correction

    GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL Pipe Connecting Liquid 9.52 9.52 9.52 pipe Pipe Connection Brazing Connection Brazing Connection Brazing Connection Method Net Weight Note: ① The technical parameters are changed along with the products’ improvement; please refer to the nameplate of the unit for actual data.
  • Page 8 GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL b. Correction factor of heating capacity 4.2 Correction factor of pipe length and height difference (1) Symbol description: Hp: Height difference in case indoor unit is below outdoor unit (m); Hm: Height difference in case indoor unit is above outdoor unit (m);...

  • Page 9: Principle Of Operation

    GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL setting is 16℃ for cooling and 30℃ for heating). a. V ariance ratio of cooling capacity Hp(m) L(m) Hm(m) b V ariance ratio of heating capacity Hp(m) L(m) Hm(m) Under heating operation, it may frost when there is snow on the outdoor heat exchangers or the outdoor temperature is below 6℃, which will reduce the heating capability of the unit.
  • Page 10 GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL Heating Cooling Electronic expansion valve Heat exchanger Gas-liquid separator Oil balance Compressor1 Compressor2 Oil balance Oil return vavle Indoor electronic expansion valve Heat exchangeer Indoor electronic expansion valve Heat exchangeer PRODUCT...
  • Page 11 GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL CONTROL 0 900 CONTROL...

  • Page 12: Control

    GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL CONTROL 1 UNITS CONTROL 1.1 Mentality of Units’ control 1.1.1 Schematic diagram of units’ control Air conditioning units can be divided into indoor unit and outdoor unit. A maximum of 16 sets of indoor units can be connected to an outdoor unit.
  • Page 13 GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL temperature sensors, operation state and protection of unit shall be performed to ensure normal and stable operation of the whole system. Protection codes of outdoor unit shall be displayed on the LED on the main control board when failure occurs.
  • Page 14 GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL Functions of various modules: A Filter plate: one of the two key functions is to filter and eliminate power interferences and ensure anti-interference capability of the unit even in a rugged power supply environment; the other one is to suppress interferences from power supply in order to prevent the operation of the unit from affecting other appliances such as TV.
  • Page 15 GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL ◆ Cooling Operation Cooling Operation There Is Not Guide Louver There Is Guide Louvers Swing Fan Motor :Operation In The Process Of Preventing Restart Operation? (3 Minut es) Temperature Adjustment? Fan Motor : Stop Electronic Expansion Valve Electronic Expansion...
  • Page 16 GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL ◆ Heating Operation Heating Operation There Is Not Guide Louver There Is Guide Louvers Swing In The Operation Of Defrosting ? In The Process Of Preventing Restart Operation? (3 Minut es) Temperature Adjustment ? In The Process Of Preventing Cold Air?
  • Page 17 GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL ◆Dry Operation Drying running Guide Louver Guide louver is swaying Fan:running at low speed Is restart being avoided？(3 minutes) Temperature regulation? Fan: stop Electronic expansion valve: Electronic expansion capacity control valve: stop ◆...
  • Page 18 GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL 1.2.2 Operation Flowchart of the Outdoor Unit The unit is powered on The electronic expansion valve: initialized Air supply Air supply or temperature regulation? Temperature regulation Is restart being avoided? (3 minutes) Is protection device Abnormality indicator of operating?
  • Page 19 GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL ◆Heating Operation Heating running Is startup being initialized? Is defrost running? Is compressor being protected? 4-way valve: open 4-way valve: open 4-way valve: open 4-way valve: reverse Outdoor fan：protection Outdoor fan：heating control Outdoor fan：heating control Outdoor fan：defrost control control mode...

  • Page 20: Wired Controller

    GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL 2 WIRED CONTROLLER 2.1 Control panel 1) LCD Display Instruction CONTROL...
  • Page 21 GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL Symbols Instructions Up and down swing function Left and right swing function It's valid under Save mode and displays during setting process.Temperature lower limit for Cooling: Limit the minimum temperature value under Cooling or Dry mode.Temperature upper limit for Heating: Limit the maximum temperature value under Heating, Space Heating or 3D Heating mode.
  • Page 22 GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL Remind to clean the filter Quiet status (including Quiet and Auto Quiet two status) Allow auxiliary electric heating On icon Light On/Off function X-fan function Health function Fresh air status Out function Outdoor unit defrosting status Gate-control function...
  • Page 23 GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL Instruction to functions of buttons Name Function Enter/Cancel Select and cancel function (1) Set operating temperature of indoor unit (2) Set Timer (3) Switch Quiet mode, Air grade, Clean grade, set upper and lower temperature limit under Save mode (4) Set and inquiry parameter Sleep...
  • Page 24 GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL 2.2 Installation and removal of wired controller 2.2.1 Installation dimensions Units: mm Panel of Wired Name Screw M4X25 Base plate of Wired Controller Controller Quantity  Selection requirement of Communication wire Sectional area Material Standard...
  • Page 25 GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL Note: ① If the units were placed at a place with stronger electromagnetism, the communication wire between indoor unit and wire controller should use screen wire for shielding the electromagnetism, and the communication wire between indoor unit and outdoor (or indoor) unit should use STP for shielding the electromagnetism.
  • Page 26 GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL Fig.2 Two wired controllers control multiple indoor units simultaneous ly Fig.3 One wired controller controls one indoor unit Fig.4 Two wired controllers control one indoor unit Wiring instructions: (1) When one wired controller controls multiple indoor units simultaneously, the wired controller can connect to any one indoor unit, but the connected indoor unit must be the same series indoor unit.
  • Page 27 GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL same indoor unit's network. (2) When two wired controllers control one indoor unit, the addresses of those two wired controllers should be different. Please refer to parameter setting. (3) When two wired controllers control multiple indoor units, wired controller can connected to any one indoor unit, while the connected indoor unit should be the same series indoor unit.
  • Page 28 GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL 4) Connect the 2-core twisted pair cable to terminal H1 and terminal H2. Tighten up the screws. 5) Set two-core into the groove at left side of wiring column, and then bundle panel and soleplate of wired controller together.
  • Page 29 GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL switch to the next IDU Indoor unit quantity Timer area: displays the number of IDUs in the system query in the system 1-80 network. network Operation method: In‖C06‖status,press ―MODE‖button to enter Preferential 00：Common operation query interface.Press―∧‖or―∨‖to switch the Preferential operation...
  • Page 30 GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL wired controller parameter setting interface.The temperature area displays ―P00‖. (2) Select a parameter code by pressing―∧‖or―∨‖.Press the ―MODE‖button to switch to parameter value ―∧‖or―∨‖ and the press the setting.The parameter value blinks.Adjust the parameter value by pressing ―ENTER/CANCEL‖to complete settings.
  • Page 31 GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL pressure levels according to the maximum control principle.If the static pressure lelvls received by the IDU from wired controller,remote controller,or remote monitoring system exceed the setting range,the limit value prevails. 3.
  • Page 32 GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL Press ON/OFF button again to turn off the unit. The interfaces of On/Off status are shown as follow: 2）Mode Setting Under On status, pressing MODE button can set mode circularly as: Note：...
  • Page 33 GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL continuously press ―∨‖button twice to decrease temperature to 12°C (when Save function is activated, the temperature in Dry mode can’t be adjusted to 12°C and the setting range is ―lowest temperature in Save mode‖ ~ 30°...
  • Page 34 GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL b. Clock Setting Clock display: when the timer setting way is clock timer, timer zone displays system clock in unit On and Off status. icon is bright and the clock can be set at this time. Clock setting: long press TIMER button for 5s to enter clock setting and icon is blinking.
  • Page 35 GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL “∧”or“∨” “∧”or“∨” Pressing button increases or decreases timer time by 1min; holding button for 5s increases or decreases timer time by 10min. Clock Timer setting is shown as follow: 6) Swing Setting In unit on status, up & down swing function and left & right swing function can be set. (1) Up &...
  • Page 36 GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL Up & down swing function has two modes: simple swing mode and fixed-angle swing mode. In unit off status, press ―SWING‖ button and ▲ button together for 5 seconds to switch between simple swing mode and fixed-angle swing mode.
  • Page 37 GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL 8) Sleep Setting Sleep Function: in this mode, the unit will operate according to the preset sleep curve to provide comfortable sleep environment. Turn on/off Sleep Function: in unit On status, press SLEEP button to tactivate or cancel Sleep function. When Sleep function is activated, icon is bright and quiet or auto quiet mode is also activated.
  • Page 38 GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL is closed while quiet function is still activated; Under Auto,Fan or Floor Heating mode, this Sleep func tion is not available. 9) Air Setting Air Function: Adjust the amount of indoor fresh air to improve air quality and keep indoor air fresh. Turn on Air Function: When unit is on or off, press FUNCTION button and select Air.
  • Page 39 GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL Note: When there is no button operation on the wired controller or no remote control signal is received for 20s continuously: ① If Light function is activated, the back light of LCD will turn to half bright. ②...
  • Page 40 GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL Save Setting for Heating: When unit is on and under Heating, 3D Heating and Space Heating modes, press icon will blink and MAX icon lit up. Press ―∧‖or―∨‖ button to FUNCTION button to select Save function.
  • Page 41 GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL The setting of Filter Clean Reminder function is shown as follow: Note: Description on cleaning level: When setting the Filter Clean Reminder Function, timer zone will display 2 digits, of which the former indicates the pollution degree of operating plac e and the latter indicates the operating time of indoor unit.
  • Page 42 GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL The former digit shows 3 while the latter one shows 0, which indicates the accumulating Heavy operating time is 100 hours. Each time the latter digit increases 1, the operating time increases Pollution 100 hours.
  • Page 43 GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL When there is Gate-control System, user can insert a card to turn on the unit or pull off a card to turn off the unit. When the card is re-inserted, the unit will recover the operation as state in memory. When the card is pulled off (or improperly inserted), icon will show.
  • Page 44 GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL Loose protection for Abnormal current Malfunction of suction discharge temperature sensor for compressor6 temperature sensor1 sensor for compressor 1 Loose protection for Malfunction of casing Malfunction of suction discharge temperature top temperature sensor temperature sensor2 sensor for compressor 2...
  • Page 45 GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL 2.5.2 Table of Error Codes for Indoor Unit Display Display Display Content Content Content Code Code Code Malfunction of Wrong series for Malfunction of indoor unit one-to-more indoor unit jumper cap Indoor fan Alarming due to bad air Abnormal address for...

  • Page 46: Remote Controller

    GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL main board and inverter compressor Driven communication Alarm due to abnormal malfunction between Much master wired valve main board and inverter controller malfunction compressor Communication Malfunction of pipeline for Malfunction of indoor malfunction between indoor unit unit-lacking...
  • Page 47 GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL 3.1.2 Button name and function introduction 1) Button name and function introduction (outside) Button name Function ON/ OFF Turn on or turn off the unit Set fan speed ▲/▼ Set temperature and time COOL Set cooling function HEAT...
  • Page 48 GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL 3.2 YV1L1 3.2.1 User Notes 1） Make sure that there is no obstruction between the remote control and the signal receptor. 2） Don’t drop or throw the remote control. 3） Don’t put the remote control directly under the sunlight or any place where is very hot. 4）...
  • Page 49 GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL Set left&right swing status Set up&down swing status X-FA N Set X-FAN function TIM ER ON Set timer on function TIM ER OFF Set timer off function SA VE Set energy-saving function SLEEP Set sleep function LIGHT...
  • Page 50 GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL INSTALLATION INSTALLATION...

  • Page 51: Installation

    GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL INSTALLATION 1 TOOLS AND EQUIPMENT FOR INSTALLATION AND MAINTENANCE ◆Triple distribution box------------------------------- ------------------ --------------- ----- --------- ----------- -------- Fig.1 ◆Multi-function meter-------------------------------------------------- ------------------ --- ------ - -------- ------------- Fig.2 ◆Control valvle-------------------------------------------------- ----------------------------------------- ---- -- ---------- - Fig.3 It can avoid refrigerant overflow when moving the refrigerant, it can make the liquid tube and liquid filling port opening are closing in an instant.
  • Page 52 GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL ◆Refrigerant cleaner---------------------------------------------------------------------- --------------------------------- Fig.23 ◆Refrigerant recovery equipment (Collector) -------------------------------------- ----------------------------------- Fig.24 Fig.1 Fig.6 Fig.5 Fig.4 Fig.2 Fig.7 Fig.8 Fig..3 Fig.9 Fig.10 Fig.11 Fig.22 Fig.14 Fig.12 Fig.13 Fig.15 Fig.16 Fig.23 Fig.17 Fig.18 Fig.24 Fig.19...

  • Page 53: Installation Key Points And Importance

    GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL 2 INSTALLATION KEY POINTS AND IMPORTANCE 2.1 Installation notice 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.All personnel involved in the installation must attend safety education courses and pass corresponding safety examinations before installation.
  • Page 54 GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL impurities were mixed with the lubricating oil The loss in pipe is considerable and the unit energy efficiency Refrigerant pipe exceeds the decreases, which are harmful for long-term running of the system. limit.

  • Page 55: Installation Materials Selection

    GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL 3 INSTALLATION MATERIALS SELECTION 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 56 GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL (3) The insulation thickness of condensate water pipe: at least 10 mm; (4) When the diameter of copper pipe is equal to or greater than Φ15.9 mm, the thickness of insulation material should be at least 20mm;...
  • Page 57 GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL IDU No.1 IDU No.2 IDU No.n 3.5 Powe r cable Only copper conductors can be used as power cables. The copper conductors must meet relevant national standard and satisfy the carrying capacity of unit ①...

  • Page 58: Installation Of Outdoor Unit

    GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL 40、45、50 duct type unit 56、63、71、80 duct type unit 90、100、112、125、140duct type unit 28、36、45、50 cassette type unit 56、63、71 cassette type unit 80、 90、 112、 125、 140 cassette type unit 3.6 Hange r rod and s upport (1) Hanger rod: M8 or M10;...
  • Page 59 GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL  Tّ ّ h e discharged air of outdoor unit will not flow back and there is sufficient space around the unit for maintenance;  Tّ ّ h e installation site must be well ventilated to ensure sufficient air intake and discharge. Make sure there is no obstacle at the air ...
  • Page 60 GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL Model GMV-224WL/A-X 1098 1584 GMV-250WL/A-X 1098 1584 GMV-280WL/A-X 1098 1584 2) Mounting hole physical dimension (mm) 3）Use M12 bolt to fix up the chassis of the units when installing units. 4）A space is needed to install outdoor unit to insure unit operate normally.
  • Page 61 GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL ⅰ Obstructions in the air inlet No obstructions above the unit Obstructions above the unit ii Obstructions in the air outlet 59 INSTALLATION...

  • Page 62: Installation Of Indoor Unit

    GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL Note： ⑴ Be sure that L is less than H, and H is the height of the unit and its chassis; ⑵ The value of A must meet the following standard: (mm) ≥600 0 <...
  • Page 63 GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL C eiling W a ll W a ll 1 5 0 0 Flo o r GMV-ND28T/A-T, GMV-ND36T/A-T, GMV-ND45T/A-T, GMV-ND50T/A-T (mm) GMV-ND56T/A-T, GMV-ND63T/A-T, GMV-ND71T/A-T, GMV-ND80T/A-T (mm) GMV-ND90T/A-T, GMV-ND100T/A-T, GMV-ND112T/A-T, GMV-ND125T/A-T, GMV-ND140T/A-T (mm) GMV-ND160T/A-T (mm) 1040 5.1.2 1-way cassette type...
  • Page 64 GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL 1200(decorative panel ) 1115( ceiling outlet 1027(distance of lifting screw) 987(main body) ② Istallation dimensions: (mm) Ceiling Wall Wall ≥1500 ≥1500 Floor 5.2 Installation of duct type indoor unit 5.2.1 Low static pressure duct type ①...
  • Page 65 GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL GMV-ND22PLS/A-T, GMV-ND25PLS/A-T, GMV-ND28PLS/A-T, GMV-ND32PLS/A-T, GMV-ND36PLS/A-T (mm) GMV-ND40PLS/A-T, GMV-ND45PLS/A-T, GMV-ND50PLS/A-T (mm) GMV-ND56PLS/A-T, GMV-ND63PLS/A-T (mm) 1142 1100 63 INSTALLATION...
  • Page 66 GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL GMV-ND71PLS/A-T, GMV-ND80PLS/A-T (mm) 1236 1200 1016 1050 GMV-ND90PLS/A-T, GMV-ND100PLS/A-T, GMV-ND112PLS/A-T, GMV-ND125PLS/A-T, GMV-ND140PLS /A-T (mm) 1379 1340 1153 1188 ② Installation space: (mm) C eiling N ut w ith w as her N ut s pring pad W all W all...
  • Page 67 GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL 5.2.2 Slim duct type ① Outline Dimensions: GMV-ND22PL/B-T, GMV-ND25PL/B-T, GMV-ND28PL/B-T, GMV-ND32PL/B-T, GMV-ND36PL/B-T (mm) GMV-ND40PL/B-T, GMV-ND45PL/B-T, GMV-ND50PL/B-T, GMV-ND56PL/B-T, GMV-ND63PL/B-T (mm) 1060 GMV-ND72PL/B-T (mm) 1360 1310 ② Space Dimension for Installation: (mm) ＞500 ＞250 65 INSTALLATION...
  • Page 68 GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL 5.2.3 High static pressure duct type ① Outline Dimensions: Gas Pipe Liquid Pipe Air Intake Drainage Pipe Electric Box GMV-ND56PHS/A-T, GMV-ND63PHS/A-T, GMV-ND71PHS/A-T, GMV-ND80PHS/A-T (mm) 1101 1159 1271 1002 GMV-ND90PHS/A-T, GMV-ND100PHS/A-T, GMV-ND112PHS/A-T, GMV-ND125PHS/A-T, GMV-ND140PH S/A-T (mm) 1101 1115...
  • Page 69 GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL GMV-ND224PH/A-T (mm) 1353 1150 GMV-ND280PH/A-T (mm) 1563 1350 ② Space Dimension for Installation: (mm) Nut with Nut Spring Washer Washer > 2 5 0 > 2 5 0 5.3 Installation of floor ceiling type indoor unit ①...
  • Page 70 GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL GMV-ND28ZD/A-T, GMV-ND36ZD/A-T, GMV-ND50ZD/A-T, GMV-ND56ZD/A-T (mm) 1220 1158 GMV-ND63ZD/A-T, GMV-ND71ZD/A-T, GMV-ND90ZD/A-T (mm) 1420 1354 GMV-ND112ZD/A-T, GMV-ND125ZD/A-T, GMV-ND140ZD/A-T (mm) 1700 1634 ② Space Dimension for Installation: (mm) Floor type >600 >600 >1000 >300 Ceiling type >1500...
  • Page 71 GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL GMV-N22G/A3A-K, GMV-N28G/A3A-K (mm) GMV-N36G/A3A-K, GMV-N45G/A3A-K, GMV-N50G/A3A-K (mm) GMV-N56G/A3A-K, GMV-N63G/A3A-K, GMV-N71G/A3A-K (mm) 1008 ② Installation space (mm) 5.5 Installation notice (1) Installation dimens ion (refer to the outline dimens ion in the figure). (2) Make sure the top hanging rod, ceiling and building structure have sufficient strength to withstand the weight of 69 INSTALLATION...

  • Page 72: Excursus

    GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL unit. (3) Keep the unit from fire, flammable objects, corrosive gap or exhaust gas; Please reserve ventilation space; Please reserve sufficient space for maintenance; Please take proper measures to reduce noise and vibration. (4) Electrical installation of unit.
  • Page 73 GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL Design Disclosure Material purchasing Review of onsite installation places Indoor Unit Installation Outdoor Unit Installation Coconnecting Pipe Installation Communication Power Cord Drain Pipe Cables Weld Power Cord Connection Weld Connection Installation Connection Purging,pressure maintaining and leak...

  • Page 74: Maintenance

    GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL Maintenace MAINTENACE 0720...

  • Page 75: Trouble Table

    GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL MAINTENACE 1 TROUBLE TABLE 1.1 Trouble Display of Outdoor Unit 1.1.1 Error code of protection Indoor Unit Outdoor Unit Error Item Code Display Display Indoor fan protection Water overflow protection Anti-freeze protection Mode conflict Malfunction of indoor ambient temperature sensor...
  • Page 76 GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL Malfunction of high-pressure switch AC current protection IPM protection Drive IPM module protection of compressor Drive IPM module overheating protection of compressor Desynchronizing protection of inverter compressor High voltage protection of compressor ’s drive DC busbar Drive current detection circuit malfunction of compressor Low voltage protection of compressor ’s drive DC busbar Phase-lacking of inverter compressor...
  • Page 77 GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL Vacuumization Test module Only the outdoor unit displays the code Note: Last ten protection shutdown and protection limited frequency reduction can be searched through the debugging controller. 1.1.4 The meaning of indicator light flicker for mainboard and drive board. Flicker Tmies Yellow Green...
  • Page 78 GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL Desynchronizing protection Malfunction of low-pressure Indoor unit 14 of inverter compressor1 sensor Phase-lacking of inverter Malfunction of Indoor unit 15 compressor1 high-pressure sensor Malfunction of phase current Fan protection Indoor unit 16 testing for compressor1 Malfunction of discharge Power protection of...

  • Page 79: Flow Chart Of Trouble Shooting

    GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL 2 FLOW CHART OF TROUBLE SHOOTING 2.1 Communication Error between the Compressor Drive Board and the Main Control Board Communication error between the compressor drive board and the main control board. Check if the main control board and the compressor drive board Check if the power cords of the main control board and the are powered on...
  • Page 80 GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL 2.2 High-Pressure Protection High-pressure protection Measure if the pressure switch is Use pressure gauge to measure if Replace the mainboard of outdoor unit the pressure is really high? normal？ Check if the operation mode of Refer to the Instruction Manual for Indoor Unit Replace the pressure switch indoor unit is set properly?
  • Page 81 GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL 2.3 Low-Pressure Protection Low-pressure protection Use pressure gauge to measure if the pressure Refer to low pressure sensor error is really low? Add refrigerant according to the nominal Check if the refrigerant in the system is too refrigerant volume on nameplate and the low? calculated charge volume...
  • Page 82 GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL 2.4 Exhuast Tempe rature Protection Exhaust Temperature Protection Measure if the exhaust temperature of compressor Measure if the resistance of temperature sensor is reaches 118 correct? When the exhaust temperature of compressor is higher Replace the corresponding exhaust temperature than 107 , check if the corresponding liquid bypass plug Replace the mainboard of outdoor unit...
  • Page 83 GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL 2.5 Refrigerant Protection Over refrigerant protection Measure if the exhaust temperature of Measure if the resistance of temperature Replace the corresponding exhaust compressor Is normal sensor is correct? temperature sensor Replace the mainboard of outdoor unit Use pressure gauge to measure if the pressure...
  • Page 84 GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL 2.6 Communication malfunction Communication error Check if the communication line of indoor unit is Check the orientation of plug and socket connected？ Measure if the communication line is through? Replace the communication line Check if the communication line of indoor and Check the orientation of plug and socket outdoor unit is connected c orrectly?
  • Page 85 GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL 2.7 Wate r-full Protection Fault display If the voltage of liquid level switch Check if the water overflows? Replace the mainboard of indoor unit terminal is correct? Check the liquid level switch If the voltage of drainage pump If the drainage pump is running? Replace the mainboard of indoor unit...
  • Page 86 GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL 2.8 Temperature Sensor Error Temperature sensor error If the plug on temperature sensor is correctly connected to Check the orientation of plug and socket the socket on mainboard? Remove the temperature and measure if its resistance is Replace the temperature sensor within normal range? Replace the mainboard of indoor unit...
  • Page 87 GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL 2.9 High/Low-Pressure Sensor Error Pressure sensor error Check if the plug of high pressure sensor is Check the orientation of plug and socket correctly connected to the socket? Measure if the output value (DC voltage) of the Replace the high pressure sensor outdoor mainboard socket is normal? Replace the mainboard of outdoor unit...
  • Page 88 GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL 2.11 No energization to the unit and mainboard Deenergizing of unit and mainboard Is power supply of wiring board L and N Is power supply of wiring board normal? 220V? Is air switch turned ON？...
  • Page 89 GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL 2.12 IPM High Temperature Protection IPM Module High Temperature Protection Check if the error arises once the power is on? Replace the compressor drive board Check if the screws have been fastened and if the coolant have been applied to the IPM module? It is finished 2.13 DC Bus High Voltage Protection...
  • Page 90 GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL 2.14 DC Bus Low Voltage Protection DC Bus Low Voltage Protection Check if the input voltage is lower than Adjust the voltage to 380V and then see if the 320V? error is eliminated? Replace the compressor drive board It is finished...
  • Page 91 GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL 2.16 Phase-lacking protection of powe r Phase-lacking protection of power Check if the power cord is connected Connect the power cord properly and see if the properly error is eliminated Replace the mian board It is finished 2.17 Desynchronizing protection of inverter compressor...
  • Page 92 GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL 2.18 Malfunction of jumpe r Check whether the jumper is connected? Connect the jumper Check whether the code of jumper is Connect the correct jumper correct? Check whether the jumper is inserted Insert the jumper tightly tightly? Replace the main board...
  • Page 93 GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL 2.19 IPM Module Protection Error Compressor Drive Board and IPM Module Protection Check if the compressor runs or not before the IPM module comes into protection When the compressor comes into Check if the connection of the power protection after running for a period of cards of the main board and the drive...

  • Page 94: Power Distribution

    GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL 3 POWER DISTRIBUTION 3.1 Diagram of power distribution Power Supply Control signal of temperature sensor, electronic expansion valve, high and low pressure switch ect. Filter Plate Commutated bridge Main board Drive board Indoor Unit Compressor...
  • Page 95 GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL 3.2 Introduction of main electric parts of inverter system Name Photo Introduction It is mainly used for filtering the intererence of the power supply and prevent the unit from interfering the Filter plate power supply so that the operation of the unit will not affect the other...
  • Page 96 GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL used transform Commutated bridge three-phase AC input power into DC power It is used to reduce the current Reactor harmonics and effectiviely restrain the interference on the network. MAINTENACE 0940...
  • Page 97 GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL 3.3 Wiring diagram Note: This drawing is just for reference; please always refer to the electric wiring stuck to the unit for actual wiring. GMV-280WL/A-X、GMV-250WL/A-X、GMV-224WL/A-X 95 MAINTENACE...

  • Page 98: Disassembly And Assembly Procedure Of Main Parts

    GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL 4 DISASSEMBLY AND ASSEMBLY PROCEDURE OF MAIN PARTS 4.1 Introduction of key parts Photo Name Function Core part of air conditioning system. It sucks low temperature and low Compressor pressure gas, compress it to high temperature and high pressure gas, and then discharge it.
  • Page 99 GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL Control to the high-voltage current: Solenoid valve open upon power on; close upon power off Detects the high pressure value in High-pressure the system in real time mode for Sensor compressor protection and other control functions It stays between discharge outlet of...
  • Page 100 GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL Fan Motor Strengthens heat exchanging One-way vavle Controls refrigenrant flow direction used for connecting indoor Cut-off V avle unitand outdoor unit, and used for maintenance and installation MAINTENACE 0980...
  • Page 101 GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL 4.2 Removal of key parts Removal operation for panel Remark: Before removing the panel, please make sure that the unit is disconected with the power Process Photo Operation Instruction  Loose the screws fixing the top cover with screwdriver 1、Remove top...
  • Page 102 GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL  Loose screws fixing left 4、Remove left side plate and rear side side plate and rear plate with screwdriver side plate  Remove the rear side plate Removal operation for blade Remark: Before removing the motor, please make sure that the unit is disconnected with the power.
  • Page 103 GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL  Loosen nuts fixing the blade with wrench  3、Remove blade Then remove the blade and put it on the floor flatly  Loose screws fixing the motor with screwdriver ...
  • Page 104 GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL  Assemble the unit in the 6、Assemble unit the converse sequence Removal operation 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.
  • Page 105 GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL 3、Loose nuts  Twist off the nuts for Twist off fixing the foot of compressor with wrench the nuts compressor compres sor with wrench  Take out the compressor and replace it 4、Remove the ...
  • Page 106 GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL  6、 Connect suction Weld the connection pipe pipe and discharge of compressor,connect the pipe of pipeline and compressor  compressor and Note: During welding pipeline of system process, do not let flame again burn out other parts When...
  • Page 107 GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL Removal operation for 4-way valve Remark: Before removing the 4-way valve, make sure that there is no refrigerant inside the pipe system and that the power has been cut off. Process Photo Operation Instruction...
  • Page 108 GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL Weld connection position  Weld connection between position between 4-way 4-way valve 4、Replace 4-way valve and pipeline and pipeline valve  Note: During welding process, do not let flame burn out other parts Removal operation for eletronic expansion valve Remark: Before removing the electronic expansion valve, make sure that there is no refrigerant inside the pipe system and that the power has been cut off.
  • Page 109 GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL  Weld the connection pipe electronic expansion valve 3、Replace the  Inistall coil electronic electronic expansion valve expansion valve  Note ： During welding process, do not let the flame burn out other parts Weld the connection pipe of electronic expansion valve Removal operation Oil Separator...
  • Page 110 GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL 3、Replace the oil  Replace the oil separator separator  4、Mount the new Tighten the screws fixing oil separator separator with screwdriver Tighten screws fixing the separator with screwdriver  Weld connection position...
  • Page 111 GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL Removal operation of gas liquid separator Remark: Before removing the Gas-liquid Separator, make sure that there is no refrigerant inside the pipe system and that the power has been cut off. 拆掉控制器盒，...
  • Page 112 GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL Loose screws fixing gas-liquid separator with  4、Remove the Loose the screws fixing screwdrive gas-liquid gas-liquid separator separator with screwdriver 5、Replace the  Replace gas-liquid gas-liquid separator separator Tighten the screws fixing the gas-liquid separator with...
  • Page 113 GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL Weld the connection position between gas-liquid separator and pipeline  Weld connection position between gas liquid 7、Weld the separator and pipeline connection pipe  Note: During welding for gas-liquid process, do not let flame separator burn out other parts Tighten...

  • Page 114: Common Maintenance

    GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL 5 COMMON MAINTENANCE 5.1 System leak hunting 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 115 GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL 1) Operation procedure a. Before vacuum-pumping, please confirm that the cut-off valve for gas pipe and liquid pipe is at off status; b. Use charging conduct pipe to connect the governing value and vacuum heat pump to the detection joint of gas valve and liquid valve;...
  • Page 116 GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL 5.3.2 Operation procedure for the airtightness test Before ex-factory, cut-off valve for gas pipe and liquid pipe of outdoor unit is turned off. Please confirm that before operation. Before test please smear a little corresponding lubricant oil at Blanking plug.and pipe terminal, and use two wrenches for fixing Blanking plug.
  • Page 117 GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL 室外机 Outdoor unit 室内机 Indoor unit ④ ① ② ③ Indoor Unit： Model Indoor Unit① Cassette type GMV-ND71T/A-T Indoor Unit② Wall-mounted type GMV-N36G/A3A-K Indoor Unit③ Duct type GMV-ND50PLS/A-T Indoor Unit④ Duct type GMV-ND25PLS/A-T Liquid Pipe：...
  • Page 118 GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL b3. Confirm that the gas valve and liquid valve for outdoor unit is at off status; b4. When the unit hasn’t been turned on, open the governing valve for the liquid-charging tank and then charge refrigerant from gas pipe and liquid pipe at the same time.

  • Page 119: Exploded View Of Unit And Parts List

    GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL Outdoor unit Notice: Equivalent length=Length of farthest fitting pipe+Equivalent length of brance(0.5m) 6 EXPLODED VIEW OF UNIT AND PARTS LIST 1） Model: GMV-224WL/A-X Exploded view and parts list of outdoor uint: MAINTENACE...
  • Page 120 GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL MAINTENACE 01180...
  • Page 121 GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL Name of part Quantity Product code Coping 01264100014 Main Board ZQCD 30224100001 Filter Board ZLBCD 30224100002 Radiator TL-002 15X11 49010252 Main Board WZCD3B 30223000007 Electric Box Assy GMV-280WL/A 01394100069 Filter Board 46010608 60A/800V(DF60BA80)(Three-phase) Terminal Board(2bit)
  • Page 122 GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL Electronic Expansion Valve 07334390 UKV-32D178 Electric Expand Valve Fitting UKV 4304413219 Magnet Coil 43040004 Nozzle for Adding Freon (R407C) 06120012 Conderser Assy 01124100097 Rear Grill 26904100078 4-way Valve 43000338 (SHF-20A-46/DSF-20-R410A) Sensor(Hign Pressure) 322101032 Oil Separator...
  • Page 123 GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL 2） Model:GMV-250WL/A-X,GMV-280WL/A-X Exploded view and parts list of outdoor uint: 121 MAINTENACE...
  • Page 124 GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL Name of part Quantity Product code Coping 01264100014 Main Board ZQCD 30224100001 Filter Board ZLBCD 30224100002 Radiator TL-002 15X11 49010252 Main Board WZCD3B 30223000007 Electric Box Assy GMV-280WL/A 01394100069 Filter Board 46010608 60A/800V(DF60BA80) （Three-phase) Terminal Board (2bit)
  • Page 125 GM V5 COM PACT MULTI VRF UNIT SERVICE M ANUAL Sensor(Hign Pressure) 322101032 Oil Separator 07424100027 Gas Luquid Separator 07424100030 Sensor(Low Pressure) 322101002 Cable Cross Loop 76515202 Strainer (Bidirection Strainer) 07220019 Fan Motor SWZ150B 1570280201 One Way Valve 07130101 Tube Cipe 021400054 Current Divider (Y-pipe) 03410101...
  • Page 126 JF00302358...

This manual is also suitable for:

Gmv-224wl/a-xGmv-250wl/a-xGmv-280wl/a-xGmv5 seriesCn850w0210Cn850w0200

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