Gree GUHD18ND3FO Service Manual
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Gree GUHD18ND3FO Service Manual

Dc inverter air conditioners
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U-MATCH SERIES DC INVERTER AIR
CONDITIONERS SERVICE MANUAL
T1/R410A/60Hz
І
(GC201410 -
)

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Summary of Contents for Gree GUHD18ND3FO

  • Page 1 U-MATCH SERIES DC INVERTER AIR CONDITIONERS SERVICE MANUAL T1/R410A/60Hz І (GC201410 -...

  • Page 2: Table Of Contents

    CONTENTE PRODUCT..................................2 1 MODELS LIST ..............................2 1.1 Outdoor Unit ............................2 1.2 Indoor Unit ............................3 2 NOMENCLATURE ............................4 2.1 Outdoor Unit ............................4 2.2 Indoor Unit ............................4 3 PRODUCT DATA ............................. 5 3.1 Product Data of Indoor Unit ......................5 3.2 Operation Range ..........................
  • Page 3 7.1 Smart Zone Controller ........................34 7.2 Additional Special Functions ......................38 INSTALLATION ................................. 53 1 INDOOR UNIT INSTALLATION ........................53 1.1 Installation of Duct Type ......................... 53 1.2 Installation of Floor Ceiling Type ....................62 1.3 Installation of Cassette Type ......................68 2 OUTDOOR UNIT INSTALLATION......................
  • Page 4 U-Match Series DC Inverter Service Manual PRODUCT...

  • Page 5: Product

    U-Match Series DC Inverter Service Manual PRODUCT 1 MODELS LIST 1.1 Outdoor Unit Power Supply Model Name Product Code Appearance (V, Ph, Hz) GUHD18ND3FO CF090W0751 208/230V~60Hz GUHD24ND3FO CF090W0761 208/230V~60Hz GUHD30ND3FO CF090W0830 208/230V~60Hz GUHD36ND3FO CF090W0771 208/230V~60Hz GUHD42ND3FO CF090W0840 208/230V~60Hz GUHD48ND3FO CF090W0781...

  • Page 6: Indoor Unit

    U-Match Series DC Inverter Service Manual 1.2 Indoor Unit Nominal Capacity Power Supply Type Model Name Product Code Cooling/Heating Appearance (V, Ph, Hz) (Btu/h) CF060N0512 GFH18D3FI 17100/18800 208/230V~60Hz CF060N0513 CF060N0522 GFH24D3FI 23800/27200 208/230V~60Hz CF060N0523 CF060N0580 GFH30D3FI 28200/31200 208/230V~60Hz Duct CF060N0590 Type CF060N0532 GFH36D3FI...

  • Page 7: Nomenclature

    U-Match Series DC Inverter Service Manual 2 NOMENCLATURE 2.1 Outdoor Unit Description Options Gree Electric Appliances Inc Capital Letter :G Unit Type U=U-Match Outdoor Unit C=Cool Only Product Type H=Heat Pump without Aux Electric Heaters N=Constant Frequency Compressor Power Supply...

  • Page 8: Product Data

    3.1.1 Duct Type Indoor unit GFH18D3FI GFH24D3FI GFH30D3FI CF060N0512 CF060N0522 CF060N0580 Product Code CF060N0513 CF060N0523 CF060N0590 Model Outdoor unit GUHD18ND3FO GUHD24ND3FO GUHD30ND3FO Product Code CF090W0751 CF090W0761 CF090W0830 Cooling Capacity Btu/h 17100(5400~19800) 23800(7400~29000) 28200(8200~29600) Capacity Heating Capacity Btu/h 18800(4700~23200) 27200(8200~32400) 31200(8200~33600) Cooling 1.55(0.55~1.75)
  • Page 9 U-Match Series DC Inverter Service Manual Indoor unit GFH36D3FI GFH42D3FI GFH48D3FI CF060N0532 CF060N0600 CF060N0542 Product Code Model CF060N0533 CF060N0610 CF060N0543 Outdoor unit GUHD36ND3FO GUHD42ND3FO GUHD48ND3FO Product Code CF090W0771 CF090W0840 CF090W0781 Cooling Capacity Btu/h 34000(10800~39000) 39500(12000~42500) 48000(20400~49500) Capacity Heating Capacity Btu/h 41000(9800~49500) 44000(13000~52500) 54500(17500~58000) Cooling 3.28(0.70~4.50)
  • Page 10 U-Match Series DC Inverter Service Manual 3.1.2 Cassette Type Indoor unit GKH18D3FI GKH24D3FI GKH30D3FI Product Code ET010N0801 ET010N0811 ET010N0840 Model Outdoor unit GUHD18ND3FO GUHD24ND3FO GUHD30ND3FO Product Code CF090W0751 CF090W0761 CF090W0830 Cooling Capacity Btu/h 17100(5400~18700) 23800(8200~29000) 28200(8800~31400) Capacity Heating Capacity Btu/h...
  • Page 11 U-Match Series DC Inverter Service Manual Indoor unit GKH36D3FI GKH42D3FI GKH48D3FI Product Code ET010N0821 ET010N0850 ET010N0831 Model Outdoor unit GUHD36ND3FO GUHD42ND3FO GUHD48ND3FO Product Code CF090W0771 CF090W0840 CF090W0781 Cooling Capacity Btu/h 34000(10800~39000) 39500(11000~41000) 48000(20400~50500) Capacity Heating Capacity Btu/h 41000(9800~49500) 44000(12000~51000) 54500(17500~61500) Cooling 3.28(0.75~4.50) 4.40(0.53~4.65)
  • Page 12 U-Match Series DC Inverter Service Manual 3.1.3 Floor-ceiling Type Indoor unit GTH18D3FI GTH24D3FI GTH30D3FI Product Code ED020N1081 ED020N1091 ED020N1120 Model Outdoor unit GUHD18ND3FO GUHD24ND3FO GUHD30ND3FO Product Code CF090W0751 CF090W0761 CF090W0830 Cooling Capacity Btu/h 17100(5400~19800) 23800(8200~27800) 28200(8800~31400) Capacity Heating Capacity Btu/h...
  • Page 13 U-Match Series DC Inverter Service Manual Indoor unit GTH36D3FI GTH42D3FI GTH48D3FI Product Code ED020N1101 ED020N1130 ED020N1111 Model Outdoor unit GUHD36ND3FO GUHD42ND3FO GUHD48ND3FO Product Code CF090W0771 CF090W0840 CF090W0781 Cooling Capacity Btu/h 34000(10800~39000) 39500(12000~42500) 48000(20400~50500) Capacity Heating Capacity Btu/h 41000(9800~49500) 44000(13000~52500) 54500(17500~61500) Cooling 3.28(0.80~4.60) 4.05(0.60~4.70)

  • Page 14: Operation Range

    Minimum Maximum Compressor Fan Motor Fuse/Breaker Circuit Overcurrent Capacity Model Power Supply Qty. Ampacity Protection − V/Ph/Hz GUHD18ND3FO 208/230V ~ 60Hz 12.0 5/25 GUHD24ND3FO 208/230V ~ 60Hz 18.0 5/40 GUHD30ND3FO 208/230V ~ 60Hz 18.0 5/40 GUHD36ND3FO 208/230V ~ 60Hz 21.2...

  • Page 15: Piping Diagram

    U-Match Series DC Inverter Service Manual Notes: RLA: Rated load amperes (marked in the nameplate of the outdoor unit) FLA: Full load current ① The fuse is located on the main board. ② Install the disconnect device with a contact gap of at least 3mm (1/8inch) in all poles nearby the units (Both indoor unit and outdoor unit).The appliance must be positioned so that the plug is accessible.
  • Page 16 U-Match Series DC Inverter Service Manual CONTROL...

  • Page 17: Control

    U-Match Series DC Inverter Service Manual CONTROL 1 OPERATION FLOWCHART 1.1 Cooling/Dry Operation Power Open unit running at cool or dry mode Indoor fan run Satisfying open Comp. condition Comp. and outdoor fan run Temp of indoor ≤Set temp Comp. and outdoor fan stop Comp.

  • Page 18: Heating Operation

    U-Match Series DC Inverter Service Manual 1.2 Heating Operation Power Open unit running at heat mode Satisfying open comp. condition Comp. and outdoor fan run Avoid cool wind (only when comp. start) Temp of indoor ≥Set temp Comp. and outdoor fan stop Comp.

  • Page 19: Wireless Remote Controller

    U-Match Series DC Inverter Service Manual 2 WIRELESS REMOTE CONTROLLER 2.1 Operation and Display View Table 2-2-1 Operation instruction of wireless remote controller Name Function Description Signal  Signal transmitter transmitter  Press this button and the unit will be turned on; press it once more and the unit will be ON/OFF turned off.
  • Page 20 U-Match Series DC Inverter Service Manual  Preset temperature can be decreased by pressing this button. Pressing and holding this button for more than 2 seconds can make the temperature changed quickly until release - button this button and then transmit this order. The temperature adjustment is unavailable under the Auto mode, but the order can be sent by pressing this button.

  • Page 21: Wired Controller

    U-Match Series DC Inverter Service Manual  Pressing this button can activate or deactivate the X-FAN function. In Cool or Dry mode, by pressing this button, if " " is displayed, it indicates the X-FAN function is activated. X-FAN By repressing this button, if " "...
  • Page 22 U-Match Series DC Inverter Service Manual Figure 2-3-2 LCD display of wired controller Table 2-3-1 Instruction to LCD Display Icons Introduction Left and right swing function Up and down swing function Air exchange function Sleep function Auto mode COOL mode DRY mode FAN mode HEAT mode...

  • Page 23: Operation View

    U-Match Series DC Inverter Service Manual Fan speed Memory function The unit will resume the original setting state after power recovery. Turbo function Energy-saving function Ambient/setting temperature Electric heater Blow function Defrosting function Filter cleaning Timer Setting Keycard control / Detected status sensed by human body Quiet function Lock function 3.2 Operation View...

  • Page 24: Instruction To Function Of Buttons

    U-Match Series DC Inverter Service Manual 3.3.2 Instruction to Function of Buttons Table 2-3-2 Instruction to buttons of wired controller Description Functions ①. Function selection and canceling; ②. Press it for 5s to view the ambient temperature; press Mode button Enter/Cancel to select viewing outdoor ambient temperature or indoor ambient temperature.
  • Page 25 U-Match Series DC Inverter Service Manual Note: The following functions can be set through Function and Timer buttons: setting of ambient temperature sensor, selecting three speeds in high speed and three speeds in low speed of indoor fan motor, display setting of freeze protection error code, setting of cold air prevention and hot air hot prevention function, setting of refrigerant-lacking protection function, selecting of blowing residual heat of indoor unit, selecting of compressor electric heater mode, selecting of low-power consumption mode, selecting door control function, selecting human sensitive function, long-distance monitoring, temperature...

  • Page 26: Operation Instruction Of Special Functions

    U-Match Series DC Inverter Service Manual 3.2.3.2 Setting of Master/Slave Wired Controller’s Address Under off status of the unit, press Enter/Cancel and Mode buttons at the same time for 5s to go to the enquiry and setting interface of master/slave wired controller. In this case, LCD displays wired controller‟s address (01 for master wired controller and 02 for slave wired controller).
  • Page 27 U-Match Series DC Inverter Service Manual Setting of filter clean reminder function is shown as Figure 2-4-1 below: Figure 2-4-1 Setting of filter clean reminder function When setting the filter clean reminder function, timer zone will display 2 digits, of which the former indicates the pollution degree of operating place and the latter indicates the accumulated operating time of indoor unit.

  • Page 28: Low Temperature Drying Function

    U-Match Series DC Inverter Service Manual accumulated operating time increases 400hr. When it reaches 9, it means the accumulated operating time is 5000hr; (4) Heavy pollution: the former digit in timer zone shows 3 while the latter one shows 0, which indicates the accumulated operating time is 100hr.

  • Page 29: Memory Function

    U-Match Series DC Inverter Service Manual 4.4 Memory Function Press Mode and ▲ buttons at the same time for 5s under off state of the unit to turn on or cancel memory function. If memory function is set, is displayed. If not, indoor unit is defaulted to be off after power recovery.

  • Page 30: Enquiry Of Historical Malfunction

    U-Match Series DC Inverter Service Manual Notes: ① If the unit is not connected to outdoor ambient temperature sensor, display of outdoor ambient temperature will be shielding after energizing for 12hr. ② If there is malfunction of outdoor ambient temperature sensor, display of outdoor ambient temperature will be shielding after energizing for 12hr.
  • Page 31 U-Match Series DC Inverter Service Manual 4.9.3 Displaying setting of freeze protection error code Under debugging state, press Mode button to adjust to “02” in temperature displaying zone. Timer zone displays setting state and press ▲ or ▼ button to adjust. There are 2 selections: (1) Displayed (LCD displays 01) (2) Not displayed (LCD displays 02) It is defaulted to be not displayed for export unit and be displayed for domestic unit.
  • Page 32 U-Match Series DC Inverter Service Manual operation state. 4.9.7 Selecting low-power consumption mode Under debugging state, press Mode button to adjust to “07” in temperature displaying zone. Timer zone displays setting state and press ▲ or ▼ button to adjust. There are 2 selections: (1) With low-power consumption mode (LCD displays 00) (2) Without low-power consumption mode (LCD displays 01) 4.9.8 Selecting door control function...
  • Page 33 U-Match Series DC Inverter Service Manual Table 2-4-2 Combination relationship of P03, P04, P05, P06, P07 Static Super Mediu Quiet Quiet Quiet High Medium Medium pressure high speed high speed low speed speed selection speed speed speed speed speed 4.9.12 Selecting compensation of temperature sensor at air return Under debugging state, press Mode button to adjust to “12”...

  • Page 34: Installation Of Wired Controller

    U-Match Series DC Inverter Service Manual 5 INSTALLATION OF WIRED CONTROLLER 5.1 Standard Accessories Table 2-5-1 Standard Accessories of Wired Controller Description Quantity Note Socket base box installed in the wall No.1 in Figure 2-5-1 Base plate of wired controller No.2 in Figure 2-5-1 Screw M4×25 No.3 in Figure 2-5-1...

  • Page 35: Installation Of Wired Controller

    U-Match Series DC Inverter Service Manual 5.3 Installation of Wired Controller Firstly, the selection and connection way of wired controller‟s signal wire are as below: (1) Choose suitable signal wire: 2-core signal wire (wire diameter ≥ 0.75mm (AWG18), wire length<30m (98-2/5ft) and the recommended length is 8m (26-1/4ft). (2) Make sure the power of indoor unit is cut off;...

  • Page 36: Troubleshooting

    U-Match Series DC Inverter Service Manual 6 TROUBLESHOOTING 6.1 Display of Error Code Table 2-6-1 Error Code List Error Code Error Compressor high pressure protection Freeze protection Compressor low pressure protection, refrigerant lacking protection, refrigerant recycling mode Compressor high discharge temperature protection Communication malfunction Malfunction of indoor fan motor Full water protection...

  • Page 37: Centralized Controller

    U-Match Series DC Inverter Service Manual Temperature excursion protection Low voltage protection of bus bar High voltage protection of bus bar Charging circuit malfunction Abnormity of input voltage Malfunction of outdoor drive memory chip When there is a malfunction during operation, error will be displayed on the temperature displaying zone of LCD.
  • Page 38 U-Match Series DC Inverter Service Manual 7.1.2 Outline Drawing of Press Buttons Figure 2-7-1 7.1.3 Functions of Press Buttons Table 2-7-1 Functions of Press Buttons Name Function Description Mode It is used for the switchover among different modes. It is used to set the fan speed, high, medium, low or auto. On/Off It is used to set the on/off status of the indoor unit.
  • Page 39 U-Match Series DC Inverter Service Manual It is used for the switchover between unit 4and unit 12; 4/12 Under the timing or clock setting status, it indicates Thursday. It is used for the switchover between unit 5and unit 13; 5/13 Under the timing or clock setting status, it indicates Friday.
  • Page 40 U-Match Series DC Inverter Service Manual Table 2-7-2 Introduction to the Symbols on the LCD Name Description It displays the fan speed of the indoor unit, high, medium, low and Fan speed auto. It displays the running mode of the indoor unit, auto, cool, dry, fan and Running mode heat.

  • Page 41: Additional Special Functions

    7.2.1 Door control function Door control function is available for this series. In order to achieve this function, please select the door control accessories from Gree. (1) Interface instructions The interface printing is DOOR-C and the type is B2B-XH-B. The wires of door control accessories must be connected to this interface;...
  • Page 42 U-Match Series DC Inverter Service Manual Table 2-7-3 Door control wiring port Terminal name Terminal instruction CN1 wiring terminal and door control interface of indoor main board X1(AC-L, AC-N) wiring terminal, connected to door control input X1(AC-L, AC-N) signal, rated voltage 220V. X2 wiring terminal, connected to door control input signal (2) Function instructions: In order to achieve this function, set it through wired controller and refer to the following operation...
  • Page 43 U-Match Series DC Inverter Service Manual Note: You can purchase the accessory from Gree. The information is as below: Name Product code Remark Controller for door control function MC207022 One controller for one unit (MK03) 7.2.2 Human sensitive function You can purchase the module of human sensitive function for this series. An interface for this module is reserved on the main board of indoor unit.
  • Page 44 ② The current consumption of module can not exceed the current capacity provided by this interface. 7.2.3 MODBUS interface The indoor unit of this series has MODBUS interface. If the user needs to connect the unit to the management system of the building, please enquire Gree for the MODBUS protocol.
  • Page 45 U-Match Series DC Inverter Service Manual Figure 2-7-9 (1) Interface instruction: The printing is COM-BMS1 and the interface type is B4B-XH-K3; Electrical characteristic: baud rate: 9600bps; standard: RS485; Working principle: The indoor main board can send out the unit operation state through this interface and receive logical control information to realize control and monitor of the unit.
  • Page 46 U-Match Series DC Inverter Service Manual Figure 2-7-10 Address setting of each unit: when the address mode is set to be long-distance control address mode. The address setting value range is 01~255. The setting method is: Under off state of the unit, press Function and Mode buttons at the same time for 5s to enter setting interface of wired controller address.
  • Page 47 U-Match Series DC Inverter Service Manual Figure 2-7-11 Notes: ① In order to realize the MODBUS interface function, the address mode of the unit must be set into long-distance control address mode; you can not set it into centralized control address mode, otherwise, this function can not be realized;...
  • Page 48 U-Match Series DC Inverter Service Manual In order to achieve this function, set the address mode and address through wired controller. Please refer to Point 3 for the setting method. The address mode is defaulted to be connecting to centralized controller mode and the defaulted address is 1;...
  • Page 49 U-Match Series DC Inverter Service Manual Under off state of the unit, press Function and Mode buttons at the same time for 5s to enter setting interface of wired controller address. LCD displays address sequence. Press ▲ or ▼ button to adjust the address sequence and then press Enter/Cancel button to confirm.
  • Page 50 7.2.5 Light board control: Light board interface is reserved on the main board of duct type unit. You can purchase Gree light board to realize control of the unit. When wired control is also connected, you can realize control of the unit through light board and wired controller.
  • Page 51 U-Match Series DC Inverter Service Manual Figure 2-7-15 Malfunction output (3) Setting method: Do not need to set this function Notes: ① The interface voltage should be 220V AC intense current; ② If malfunction light is connected, please make sure its power is not too big (it should be within 10W), otherwise, the relay on main board will be burnt.
  • Page 52 U-Match Series DC Inverter Service Manual Figure 2-7-16 Table 2-7-4 Corresponding interfaces of main board Interface Evaporator temperature sensor Swing motor Human sensitive Door control Full water detection Interface of light board Communication port of centralized controller MODBUS interface Interface of annunciator live wire ON interface of fresh air valve OFF interface of fresh air valve Interface of annunciator neutral wire...
  • Page 53 U-Match Series DC Inverter Service Manual 7.2.7 Reserved fresh air valve interface for duct type unit For the reserved connection way of air valve performer, connect it to F, C, O of wiring board according to the wiring diagram. Connect the public port of air valve to F, connect CLOSE to C and connect OPEN to Figure 2-7-17 7.2.8 Interface of anion generator For the cold plasma anion generator, connect the red line to HEALTH （X4）...
  • Page 54 U-Match Series DC Inverter Service Manual 7.2.9 Chassis electric heating belt of outdoor unit is optional When outdoor ambient temperature is very low, electric heating belt can be equipped on the chassis to prevent freezing of the chassis. Figure 2-7-19...
  • Page 55 U-Match Series DC Inverter Service Manual INSTALLATION...

  • Page 56: Installation

    U-Match Series DC Inverter Service Manual INSTALLATION 1 INDOOR UNIT INSTALLATION 1.1 Installation of Duct Type 1.1.1 Before Installation After receiving the machine, please check for any transport damage. If finding any surface or internal damage, please immediately report to the transport company or equipment company in writing. After receiving the machine, please check the unit and accessories in reference to the packing list.
  • Page 57 U-Match Series DC Inverter Service Manual drawing of the indoor unit for the distance between the holes. Refer to Figure 3-1-1 for the installation of the expansion bolt. Air-conditioning Unit Ceiling-mount Screw Hanger Figure 3-1-1 Figure 3-1-2 Screw Hook Figure 3-1-3 Install the hanger onto the indoor unit as Figure 3-1-2 and Figure 3-1-3 shows.
  • Page 58 U-Match Series DC Inverter Service Manual Level Instrument Condensate Air Intake Air Supply Drainpipes As the inside of the unit is in the negative Enlarged View pressure status, it is required to set up a Condensate Drainpipe backwater elbow. The requirements is: A=B≥(0.145P/10000+20)/25.4(inch) P is the absolute pressure inside the unit.
  • Page 59 U-Match Series DC Inverter Service Manual  For the units: 48k Figure 3-1-6 Table 3-1-1 Unit: mm (inch) Item Model 1037 GFH18D3FI (37-1/4) (24-3/8) (29) (35-1/8) (40-7/8) (28-3/8) (29) (4-7/8) (10-1/2) GFH24D3FI 1101 1159 1279 1002 (43-3/8) (20-3/8) (32-1/4) (45-5/8) (50-3/8) (22) (39-1/2)

  • Page 60: Installation Clearance Data

    U-Match Series DC Inverter Service Manual 1.1.5 Installation Clearance Data Nut with Nut Spring Washer Washer ＞ 250mm ＞ 250mm (9-7/8inch) (9-7/8inch) Figure 3-1-7 Warning! The height of installation for the indoor unit should be 2.5m (8-1/5ft) above. 1.1.6 Drain Piping Work Installation of Drainage Pipeline: Install the drain hose in accordance with the instructions in this installation manual and keep the a rea warm enough to prevent condensation.
  • Page 61 U-Match Series DC Inverter Service Manual Supporter 1~1.5m(3-2/7~5feet) Drain hose Figure 3-1-9 Figure 3-1-10 Condensate Drainpipe As the inside of the unit is in the negative pressure status, it is required to set up a backwater elbow. The requirements is: Enlarged View A=B≥(0.145P/10000+20)/25.4(inch) Condensate Drainpipe...
  • Page 62 U-Match Series DC Inverter Service Manual Drain hose insulation Insulated drain hose Drain hose insulation Drain cap Unit Drain port Unit 0mm(0inch) Drain port 0mm(0inch) Drain cap Insulated drain hose Figure 3-1-13 Figure 3-1-14 (11) There is adhesive on one side of the insulation so that after removing the protective paper over it the insulation can be directly attached to the drain hose.
  • Page 63 U-Match Series DC Inverter Service Manual T-joint converging drain pipes T-joint converging drain pipes Figure 3-1-17 1.1.7 Installation of air duct Dimensions of the Supply Air Outlet/Return Air Inlet 21mm(7/8inch) Figure 3-1-18 Supply Air Outlet Figure 3-1-19 Return Air Inlet Table 3-1-3 Unit: mm (inch) Item...
  • Page 64 U-Match Series DC Inverter Service Manual 1.1.8 Installation of the Supply Air Duct (1) Installation of the Rectangular Duct. Table 3-1-4 Installation of the rectangular duct Name Name Hanger Filter Main Air Air Intake Pipe Supply Pipe Air Supply Canvas Air Pipe Outlet Air Intake Figure 3-1-20...

  • Page 65: Installation Of Floor Ceiling Type

    U-Match Series DC Inverter Service Manual maintenance etc., as shown in Figure 3-1-22. Supply air Supply air Return air Return air Install the return air duct(a) Install the return air duct(b) Figure 3-1-22 Table 3-1-5 Installation of the return air duct Name Name Return Air Inlet (with filter)
  • Page 66 U-Match Series DC Inverter Service Manual  Floor type  Ceiling type Figure 3-1-23 (4) Install the unit where the drain pipe can be easily installed. (5) The space from the unit to the ceiling should be kept as much as possible so as for more convenient service.
  • Page 67 U-Match Series DC Inverter Service Manual (3) Firstly unfix two buckles on the grille as shown on the picture. Remove the screws under the buckles by a screwdriver and then open the inlet grille. Remove the screw Figure 3-1-25 (4) Remove the screws shown on the picture. Push the side plate as per the arrowed direction and take it down.
  • Page 68 U-Match Series DC Inverter Service Manual  Ceiling type Ceiling Suspension bolt Spring washer Left side panel Right side panel Hanger Figure 3-1-28 (7) Adjust the height of the unit to make the drain pipe slant slightly downward so that the drainage will become much smoother.
  • Page 69 U-Match Series DC Inverter Service Manual 1.2.5 Dimension Data Figure 3-1-30 Table 3-1-6 Unit: mm (inch) Model GTH18D3FI 1220(48) 225(8-7/8) 1158(45-5/8) 280(11) 700(27-1/2) GTH24D3FI GTH30D3FI GTH36D3FI 1420(55-7/8) 245(9-5/8) 1354(53-1/4) 280(11) 700(27-1/2) GTH42D3FI GTH48D3FI 1700(66-7/8) 245(9-5/8) 1634(64-3/8) 280(11) 700(27-1/2) 1.2.6 Drain Piping Work 1.2.6.1 Precautions When Doing the Piping Work (1) Keep piping as short as possible and slope it downwards at a gradient of at least 1/100 so that air may not remain trapped inside the pipe.
  • Page 70 U-Match Series DC Inverter Service Manual (4) Connect the drain hose (Figure 3-1-32). Drain hose must slope downward. Allow no trap to form in the piping Do not allow end of hose to touch water Figure 3-1-32 1.2.6.2 Installing the Drain Pipes (1) For determining the position of the drain hose, perform the following procedures.

  • Page 71: Installation Of Cassette Type

    U-Match Series DC Inverter Service Manual Drain pan Drain hose ② Bottom-right piping ① Right side piping Figure 3-1-36 1.2.6.4 Testing of Drain Piping (1) After piping work is finished, check if drainage flows smoothly. (2) As shown in the figure, pour water into the drain pan from the right side to check that water flows smoothly from the drain hose.
  • Page 72 U-Match Series DC Inverter Service Manual 1.3.2 Installation Site Select an installation site where the following conditions are fulfilled and that meets your customer's approval. (1) Obstruct should be put away from the intake or outlet vent of the indoor unit so that the airflow can be blown through all the room.
  • Page 73 U-Match Series DC Inverter Service Manual 1.3.3 Installing the Main Body Unit Nut(field supplied) Gas(attachment) Insert Gasket anchor board(attachment) Hoisting stand Tighten(double nuts) [Fix the gasket firmly] [Fix the hoisting stand firmly] One bolt located at one corner of the outlet pipe Center of the ceiling should be fixed on one corner of the drainage slot.

  • Page 74: The Panel Installation

    U-Match Series DC Inverter Service Manual 1.3.5 Leveling The water level test must be done after installing the indoor unit to make the unit is horizontal, as shown below. Horizontal tester Figure 3-1-43 1.3.6 The Panel Installation (1) See the figure below for the relationship of the front panel and the connecting pipe. Figure 3-1-44 (2) Place the panel at the unit, and latch the hooks beside and opposite the swing flap motor.
  • Page 75 U-Match Series DC Inverter Service Manual ① Hook Latch ② Piping position ② Swing flap motor ③ ④ Indoor unit Ceiling Indoor unit 5~8mm(1/4~3/8inch) ⑤ Panel Air outlet Figure 3-1-45 (7) Improper screwing of the screws may cause the troubles shown in Figure 3-1-46. Air leak Condensate Figure 3-1-46...
  • Page 76 U-Match Series DC Inverter Service Manual (9) Wire the swing flap motor as shown in Figure 3-1-48. Connect them to the main body according to the size of terminals Figure 3-1-48 1.3.7 Dimension Data For the units: 18k Table 3-1-8 Unit: mm (inch) Item Model...
  • Page 77 U-Match Series DC Inverter Service Manual Unit: mm (inch) Item Model GKH24D3FI (37-3/8) (33-1/8) (30-3/4) (26-3/4) (6-1/4) (9-1/2) (36-1/8) (8-1/2) (39-1/8) GKH30D3FI (37-3/8) (33-1/8) (30-3/4) (26-3/4) (6-1/4) (12-5/8) (36-1/8) (8-1/2) (39-1/8) GKH36D3FI (37-3/8) (33-1/8) (30-3/4) (26-3/4) (6-1/4) (12-5/8) (36-1/8) (8-1/2) (39-1/8) GKH42D3FI (37-3/8)
  • Page 78 U-Match Series DC Inverter Service Manual 1.3.9 Installing the Drain Pipes (1) Insert the drain pipe to the drain outlet of the unit and then tighten the clamp securely with tape. (2) Connect the extension drain pipe to the drain pipe and then tighten the clamp with tape. Insulate the pipe clamp and the drain hose using heat Tighten the clamp until the screw head is less then 4mm insulation sponge.
  • Page 79 U-Match Series DC Inverter Service Manual (8) Connection of drainage branch pipe to the standpipe or horizontal pipe of drainage main pipe. (9) The horizontal pipe cannot be connected to the vertical pipe at a same height. It can be connected in a manner as shown below: NO.1: Attach the 3-way connection of the drainage pipe joint as shown in Figure 3-1-55.
  • Page 80 U-Match Series DC Inverter Service Manual 1~1.5m(3-2/7~5feet) √ (Correct) 1/100 or more gradient × (wrong ) Figure 3-1-59 (5) The incline of attached drain hose should be 75mm (3inch) or less so that the drain outlet does not have to withstand additional force. Drain hose(attachment) Figure 3-1-60 1.3.11 Testing of Drain Piping...

  • Page 81: Outdoor Unit Installation

    U-Match Series DC Inverter Service Manual 2 OUTDOOR UNIT INSTALLATION 2.1 Before Installation After receiving the machine, please check for any transport damage. If finding any surface or internal damage, please immediately report to the transport company or equipment company in writing. After receiving the machine, please check the unit and accessories in reference to the packing list.

  • Page 82: Caution For Installation

    U-Match Series DC Inverter Service Manual ＞ 2000mm ＞ 500mm (6-5/9feet) (1-2/3feet) Figure 3-2-1 2.3 Caution for Installation The outdoor unit shall be so installed that the air discharged out of the outdoor unit will not flow back and that enough space shall be maintained around the machine for repair; The installing position shall be in good ventilation, so that the machine can breathe and exhaust enough air.

  • Page 83: Refrigeration Piping Work

    U-Match Series DC Inverter Service Manual Table 3-2-1 Unit: mm (inch) Item Model GUHD18ND3FO (37-5/8) (15-5/8) (27-1/2) (22) (14-1/8) GUHD24ND3FO (38-5/8) (16-3/4) (31-1/8) (24) (15-1/2) GUHD30ND3FO 1107 1100 GUHD36ND3FO (43-5/8) (17-3/8) (43-1/4) (24-7/8) (15-3/4) GUHD42ND3FO 1349 (37-3/4) (16-1/4) (53-1/8) (22-1/2)
  • Page 84 U-Match Series DC Inverter Service Manual stretch them any more. Do not bend or stretch the pipes more than three times. (4) When bending the pipe, do not bend it as is. The pipe will be collapsed. In this case, cut the heat insulating pipe with a sharp cutter as shown in Figure 3-3-3, and bend it after exposing the pipe.
  • Page 85 U-Match Series DC Inverter Service Manual Sponge Threaded fastener(×4) Heat insulation sheath (for the liquid tube) Heat insulation sheath (for the gas tube) Gas inlet pipe Liquid pipe Figure 3-3-4 Table 3-3-1 Flare nut tightening torque Pipe Diameter Tightening Torque 6mm (1/4inch) 15~30N·...

  • Page 86: Vacuum And Gas Leakage Inspection

    U-Match Series DC Inverter Service Manual 3.1.5 Checking the Pipe Connections for Gas Leaking For both indoor and outdoor unit side, check the joints for gas leaking by the use of a gas leakage detector without fail when the pipes are connected. 3.1.6 Heat Insulation on the Pipe Joints (Indoor Side Only) Stick coupler heat insulation (large and small) to the place where connecting pipes.

  • Page 87: Additional Charge

    U-Match Series DC Inverter Service Manual (7) Slightly open the liquid valve and let some refrigerant go to the connection pipe to balance the pressure inside and outside of the connection pipe, so that air will not come into the connection pipe when removing the hose.

  • Page 88: Specification Of Connection Pipe

    (inch) between Indoor Unit and Diameter × wall Length Outdoor Unit thickness) Model Liquid m (feet) m (feet) mm (inch) Φ17×1.75(Φ5/8 × 7/100) GUHD18ND3FO 6(1/4) 12.7(1/2) 20(65-3/5) 15(49-1/5) Φ17×1.75(Φ5/8 × 7/100) GUHD24ND3FO 30(98-2/5) 15(49-1/5) Φ17×1.75(Φ5/8 × 7/100) GUHD30ND3FO 30(98-2/5) 15(49-1/5) Φ17×1.75(Φ5/8 ×...

  • Page 89: Electrical Wiring

    U-Match Series DC Inverter Service Manual ①. The power source capacity must be the sum of the air conditioner current and the current of other electrical appliances. When the current contracted capacity is insufficient, change the contracted capacity. ②. When the voltage is low and the air conditioner is difficult to start, contact the power company to raise the voltage. 4.2 Electrical Wiring (1) For solid core wiring (Figure 3-4-1) Cut the wire end with a wire cutter or wire-cutting pliers, then strip the insulation about 25mm (1...
  • Page 90 U-Match Series DC Inverter Service Manual clamp (Figure 3-4-3). ①. Before starting work, check that power is not being supplied to the indoor unit and outdoor unit. ②. Match the terminal block numbers and connection cord colors with those of the indoor unit side. Erroneous wiring may cause burning of the electric parts.
  • Page 91 U-Match Series DC Inverter Service Manual  Cassette Type Unit: Single-phase units: 18k Single-phase units: 24k~30k Single-phase units: 36k~42k...
  • Page 92 U-Match Series DC Inverter Service Manual Single-phase units: 48k  Floor ceiling Type Unit: Single-phase units (18k~30k) Single-phase units (36k~48k) Figure 3-4-4...
  • Page 93 U-Match Series DC Inverter Service Manual (5) Electric wiring of indoor unit side Remove the electric box cover from the electric box sub-assy and then connect the wire.  Duct Type Unit: L1 L2 H1 H2 Electric box sub-assy Figure 3-4-5 The F, C, O connect to the COMMOM, CLOSE and OPEN terminal of the fresh air valve respectively.
  • Page 94 U-Match Series DC Inverter Service Manual For the units: 48k H1 H2 Figure 3-4-6  Floor Ceiling Type Unit: Electric box cover H1 H2 Figure 3-4-7 ①. The power cord and the wire of the fresh air valve are high-voltage, while the communication cord and connection wire of the wired controller are low-voltage.
  • Page 95 U-Match Series DC Inverter Service Manual ④. The high-voltage and low-voltage lines should be fixed separately and securely, with internal big clamps for the former and small clamps for the latter. ⑤. Tighten the indoor/outdoor connection cord and power cord respectively on the terminal boards with screws. Faul ty connection may cause a fire.
  • Page 96 U-Match Series DC Inverter Service Manual MAINTENANCE...

  • Page 97: Maintenance

    U-Match Series DC Inverter Service Manual MAINTENANCE 1 TROUBLE TABLE 1.1 Main Control Malfunction Table 4-1-1 Fault Display on Indoor Wired Controller Malfunction Origin of Error code Control description name malfunction signal When outdoor unit detects the high pressure switch is cut off for 3s successively, high pressure protection will occur.
  • Page 98 U-Match Series DC Inverter Service Manual Malfunction Origin of Error code Control description name malfunction signal If cut-off of water level switch is detected for 8s successively once Full water energized, the system will enter full water protection. In this case, Water level switch protection switch off the unit and then switch it on to eliminate this...
  • Page 99 U-Match Series DC Inverter Service Manual Malfunction Origin of Error code Control description name malfunction signal If outdoor unit detects that the tube temperature is higher than protective temp. value, the unit will report overload protection. Evaporator The unit will not restart operation until tube temperature is lower Overload temperature, than the protective temp.

  • Page 100: Description Of Drive Malfunction

    U-Match Series DC Inverter Service Manual 1.2 Description of Drive Malfunction Main board dual 8 numeral tube Display Codes for Outdoor Unit of 18k~48k Outdoor unit display of dual 8 numeral Malfunction Item Indoor Unit Display tube DC busbar over-voltage protection IPM or PFC over-temperature protection Current sense circuit error IPM or PFC temperature sensor error...

  • Page 101: Flow Chart Of Troubleshooting

    U-Match Series DC Inverter Service Manual 2 FLOW CHART OF TROUBLESHOOTING 2.1 Troubleshooting Flow Chart of Main Control Malfunction  E1 High Pressure Protection...
  • Page 102 U-Match Series DC Inverter Service Manual  E2 Freeze Protection Freeze protection is normal protection but not abnormal malfunction. If freeze protection occurs frequently during operation, please check if the indoor filter is with filth blockage or if the indoor air outlet is abnormal.
  • Page 103 U-Match Series DC Inverter Service Manual  E4 Discharge Protection  E6 Communication Malfunction Communication malfunction Check if the Reconnect the communication wire between communication indoor unit and outdoor unit is wire connected well Check if there is Replace the open circuit in the communication communication wire between indoor unit and...
  • Page 104 U-Match Series DC Inverter Service Manual  E9 Full Water Protection E9 protection Short circuit the full water If the unit is protection interface on indoor installed with mainboard according to the circuit water pump diagram Check if the water pump Replace the water pump works normally Replace the full water switch...
  • Page 105 U-Match Series DC Inverter Service Manual  F1 Malfunction of Evaporator Temperature Sensor Malfunction of evaporator temperature sensor Check if the evaporator Correctly insert the temperature sensor on temperature mainboard is inserted on the sensor on the needle stand correctly needle stand Disconnect Replace the...
  • Page 106 U-Match Series DC Inverter Service Manual  F3 Malfunction of Outdoor Ambient Temperature Sensor Malfunction of outdoor ambient temperature sensor Check Correctly insert the if the outdoor ambient temperature sensor on temperature sensor on mainboard the needle stand is inserted on the needle stand correctly Disconnect Replace the...
  • Page 107 U-Match Series DC Inverter Service Manual  F5 Malfunction of Wired Controller Temperature Sensor Malfunction of wired controller temperature sensor Replace the wired controller  H6 Malfunction of Outdoor Fan Motor...

  • Page 108: Troubleshooting Flow Chart Of Drive Malfunction

    U-Match Series DC Inverter Service Manual  E8 Malfunction of Indoor Fan Motor Malfunction of indoor fan motor Check if the Correctly connect the control wire of indoor fan motor is control wire of fan motor connected on the outdoor on the mainboard mainboard correctly Replace...
  • Page 109 U-Match Series DC Inverter Service Manual  P8 IPM or PFC over-temperature protection P8 is displayed on the wired controller P8 is displayed in the mainboard 88 Indicating lamp Is the IPM or PFC module of mainboard tightened？ Replace the Tighten the IPM mainboard or PFC module...
  • Page 110 U-Match Series DC Inverter Service Manual  P6 Drive-to-main-control communication error  Lc Compressor Startup Failure Lc is displayed on the wired controller Lc is displayed in the mainboard 88 indicating lamp Replace the mainboard. Does it work normally? Replace the compressor Work normally ...
  • Page 111 U-Match Series DC Inverter Service Manual  PU Charging circuit error PU is displayed on the wired controller PU is displayed in the mainboard 88 indicating lamp Is the PFC wire tightened or is the sequence right? Tighten the PFC Replace the wire or adjust the mainboard...
  • Page 112 U-Match Series DC Inverter Service Manual  H6 DC fan error...

  • Page 113: Interface

    U-Match Series DC Inverter Service Manual 2.3 Interface  GUHD18ND3FO/GUHD24ND3FO/ GUHD30ND3FO/ GUHD36ND3FO / GUHD42ND3FO /GUHD48ND3FO Main Control Board NO. SILK-SCREEN INTERFACE INTERFACE INSTRUCTION AC-L Live wire input Live wire input AC-N Neutral wire input Neutral wire input Power supply interface to the drive...
  • Page 114 U-Match Series DC Inverter Service Manual Communication needle stand of main control drive Communication line [1-3.3V、2-TX、 1-pin: +3.3V COMM1 3-RX、4-GND] 2-pin: TXD 3-pin: RXD 4-pin: GND Communication needle stand with indoor unit Communication line with1-pin 1-pin: GND GND, 2-pin B and 3-pinA） 2-pin: B 3-pin: A Communication...
  • Page 115 U-Match Series DC Inverter Service Manual  GUHD18ND3FO/GUHD24ND3FO/GUHD30ND3FO/GUHD36ND3FO/GUHD42ND3FO (1) Driving Board Printing Interface Printing Interface L2_2 PFC induction wire (blue) L1_1 PFC induction wire (brown) Neutral wire input (white) AC-L Live wire input (red) COMM/COMM1 Communication interface JTAG1 (Reserved) Bus electric discharging interface (for...
  • Page 116 U-Match Series DC Inverter Service Manual Filtering Board Printing Interface Printing Interface Neutral wire output 1 (white) (only for Neutral wire output N-OUT1 N-OUT 18k) (white) L-OUT Live wire output (red) Grounding wire (Reserved) AC-L Live wire input (red) AC-N Neutral wire input (white)
  • Page 117 U-Match Series DC Inverter Service Manual  GUHD48ND3FO (1) Drive Board: Printing Interface Printing Interface AC-L Live wire input (red) L1-1 PFC induction wire (brown) Neutral wire input (white) L2-2 PFC induction wire (blue) L2-1 PFC induction wire (yellow) L1-2 PFC induction wire (white) Control power input JTAG1...
  • Page 118 U-Match Series DC Inverter Service Manual (2) Filtering Board: Printing Interface Printing Interface N-OUT Neutral wire output (white) L-OUT Live wire output (red) DC-BUS DC bus interface (connect to drive board) AC-L Live wire input (red) Neutral wire input (white) (Reserved) Grounding wire (screw hole)

  • Page 119: Ipm, Pfc Testing Method

    (3) If the measured voltages between L1-2P ,L2-1 P, N L1-2 , NL2-1 are all among 0.3V-0.7V, then it indicates the PFC module is normal; If any measured valve is 0, it indicates the PFC is damaged.  GUHD18ND3FO/GUHD24ND3FO/ GUHD30ND3FO /GUHD36ND3FO/ GUHD42ND3FO...

  • Page 120: Wiring Diadram

    U-Match Series DC Inverter Service Manual  GUHD48ND3FO 3 WIRING DIADRAM 3.1 Outdoor unit The actual wiring should always refer to the wiring diagram of the unit.  Model: GUHD18ND3FO...
  • Page 121 U-Match Series DC Inverter Service Manual  Model: GUHD24ND3FO  Model: GUHD30ND3FO...
  • Page 122 U-Match Series DC Inverter Service Manual  Model: GUHD36ND3FO  Model: GUHD42ND3FO...

  • Page 123: Indoor Unit

    U-Match Series DC Inverter Service Manual  Model: GUHD48ND3FO 3.2 Indoor unit The actual wiring should always refer to the wiring diagram of the unit. 3.2.1 Duct Type  Model: GFH18D3FI/GFH24D3FI/GFH30D3FI/GFH36D3FI/GFH42D3FI...
  • Page 124 U-Match Series DC Inverter Service Manual  Model: GFH48D3FI 3.2.2 Floor Ceiling Type  Model: GTH18D3FI/GTH24D3FI/GTH30D3FI/GTH36D3FI/GTH42D3FI/GTH48D3FI...
  • Page 125 U-Match Series DC Inverter Service Manual 3.2.3 Cassette Type  Model: GKH18D3FI  Model: GKH24D3FI/GKH30D3FI/GKH36D3FI/GKH42D3FI...
  • Page 126 U-Match Series DC Inverter Service Manual  Model: GKH48D3FI...

  • Page 127: Disassembly And Assembly Procedure Of Main Parts

    U-Match Series DC Inverter Service Manual 4 DISASSEMBLY AND ASSEMBLY PROCEDURE OF MAIN PARTS 4.1 Outdoor Unit 18k: Remark: Before disassembly and assembly, make sure that the unit has been cut off from the power supply. Step Illustration Handling Instruction 1.
  • Page 128 U-Match Series DC Inverter Service Manual Assemble the unit in the reverse procedures of 4. Assemble unit disassembly. 24k/30k: Remark: Before disassembly and assembly, make sure that the unit has been cut off from the power supply. Step Illustration Handling Instruction 1.
  • Page 129 U-Match Series DC Inverter Service Manual Assemble the unit in the reverse procedures of 4. Assemble unit disassembly. 36k: Remark: Before disassembly and assembly, make sure that the unit has been cut off from the power supply. Step Illustration Handling Instruction 1.
  • Page 130 U-Match Series DC Inverter Service Manual 1. Discharge the refrigerant inside the pipeline and recycle the refrigerant during discharging; 2. Unsolder the 4-way valve assy from 4. Remove compressor compressor; 3. Remove the nut fixing compressor; 4. Take away the compressor from chassis. Assemble the unit in the reverse procedures of 5.

  • Page 131: Indoor Unit

    U-Match Series DC Inverter Service Manual 1. Discharge the refrigerant inside the pipeline and recycle the refrigerant during discharging; 3. Remove gas liquid 2. Unsolder the 4-way valve assy from gas liquid separator. separator; 3. Remove the gas liquid separator. 1.
  • Page 132 U-Match Series DC Inverter Service Manual 3. Remove the screws on Remove the screws on fan sub-assembly. fan sub-assembly. 4. Overturn the propeller Rotate the propeller housing to the air inlet housing according to arrow direction. Use inner hexagonal spanner to loosen the 5.
  • Page 133 U-Match Series DC Inverter Service Manual Disassembly of electrical parts box cover panel and electrical parts box Remark: Make sure that the power supply is cut off before disassembling and protect all the parts during disassembly, especially the electrical components. Do not dampen or hit them. Step Illustration Handling Instruction...
  • Page 134 U-Match Series DC Inverter Service Manual Disassembly of fan and motor Remark: Make sure that the power supply is cut off before disassembling and protect all the parts during disassembly. Step Illustration Handling Instruction Disassemble the fixing screws on the fan components.
  • Page 135 U-Match Series DC Inverter Service Manual 4.2.2 Cassette-type Unit Removal and Assembly of Fan Motor Step Illustration Handling Instruction 1. Loosen the screws Use screwdriver to loosen the screws fixing the water tray fixing the water tray. 2. Remove the water tray Remove the water tray.
  • Page 136 U-Match Series DC Inverter Service Manual 5. Loosen the screws Use screwdriver to loosen the screws fixing the motor fixing the motor. 6. Remove the motor and Remove the motor and replace it. replace it 7. Tighten the screws Use screwdriver to tighten the screws fixing the motor fixing the motor.
  • Page 137 U-Match Series DC Inverter Service Manual Removal and Installation of Drainage Pump Step Illustration Handling Instruction 1. Loosen the screws Use screwdriver to loosen the screws fixing the water tray fixing the water tray. 2. Remove the water tray Remove the water pump and replace it. 3.
  • Page 138 U-Match Series DC Inverter Service Manual 5. Connect the drainage Connect the drainage pipe and use pipe and tighten the screwdriver to tighten the screws fixing the screws fixing the water water pump. pump. 6. Mount the water tray Use screwdriver to loosen the screws and tighten the screws fixing the water tray.
  • Page 139 U-Match Series DC Inverter Service Manual Disassemble the screws as shown in the graph with screwdriver and then push Disassembly of right and upward to remove the right and left finishing left finishing plates plates. (As is shown in the graph, arrow represents the position of screws.) Disassembly of panel parts Remark: Make sure the power supply is cut off before disassembling and protect all the parts during disassembly.
  • Page 140 U-Match Series DC Inverter Service Manual Disassembly of evaporator components Remark: Make sure that the power supply is cut off and protect the copper tube and aluminum fin. If the time for disassembly shall be long, seal the copper tube. Step Illustration Handling Instruction...
  • Page 141 U-Match Series DC Inverter Service Manual 3. Disassembly of bearing Unscrew the 3 screws and 2 nuts of support fixing plates to remove the mounting support. Loosen the 2 screws of the motor attaching clamp, remove the motor attaching clamp 4.
  • Page 142 U-Match Series DC Inverter Service Manual Disassembly of panel parts Remark: Make sure the power supply is cut off before disassembling and protect all the parts during disassembly. Do not scratch the outer parts. Step Illustration Handling Instruction Unscrew the 3 sides’ screws on the cover to Disassembly of panel parts remove the cover.
  • Page 143 U-Match Series DC Inverter Service Manual Disassembly of evaporator components Remark: Make sure that the power supply is cut off and protect the copper tube and aluminum fin. If the time for disassembly shall be long, seal the copper tube. Step Illustration Handling Instruction...
  • Page 144 U-Match Series DC Inverter Service Manual 2. Disassembly of Unscrew the 3 screws and 2 nuts of support to bearing fixing plates remove the mounting support Loosen the 2 screws of the motor attaching clamp, remove the motor attaching clamp and 3.

  • Page 145: Exploded Views And Spare Part List

    U-Match Series DC Inverter Service Manual 5 EXPLODED VIEWS AND SPARE PART LIST 5.1 Outdoor Unit  Model: GUHD18ND3FO Exploded Views and spare parts list: GUHD18ND3FO Name of Part Product Code CF090W0751 Part Code Quantity Front Grill 01473049 Front Panel...
  • Page 146 U-Match Series DC Inverter Service Manual Silencer 07245007 Handle Assy 02113032P Strainer 07212403 Strainer 07220019 Strainer 0721004501 Electronic Expansion Valve 07134601 Electric Expand Valve Fitting 4300876704 4-Way Valve 430004032 Magnet Coil 4300040045 Inductance 4312002001 Rear Grill 01473043 Clapboard Sub-Assy 01232902 Condenser Assy 01125200189 Terminal Board...
  • Page 147 U-Match Series DC Inverter Service Manual  Model: GUHD24ND3FO Exploded Views and spare parts list: GUHD24ND3FO Name of Part Product Code CF090W0761 Part Code Quantity Front Grill 01473050 Cabinet 01435004P Left Handle 26235401 Front Side Plate 01305086P Axial Flow Fan 10335014 Fan Motor 15702802...
  • Page 148 U-Match Series DC Inverter Service Manual Clapboard Sub-Assy 01245200010 Strainer 07225088 PFC Inductance 43128003 Bidirection Strainer 07220016 Condenser Assy 01125200184 Electronic Expansion Valve 07334447 Electric Expand Valve Fitting 4304413208 Strainer 07215201 4-way Valve 4300008201 Pressure Protect Switch 4602001539 Silencer 07245012 Condenser Support Plate 01175092 Magnet Coil...
  • Page 149 U-Match Series DC Inverter Service Manual  Model: GUHD30ND3FO Exploded Views and spare parts list: GUHD30ND3FO Name of Part Product Code CF090W0830 Part Code Quantity Front Grill 01473050 Cabinet 01435004P Left Handle 26235401 Front Side Plate 01305086P Axial Flow Fan 10335014 Chassis Sub-assy 01195200013P...
  • Page 150 U-Match Series DC Inverter Service Manual Rear Grill 01475013 Clapboard Sub-Assy 01245200006 Strainer 07225088 Bidirection Strainer 07220016 Electronic Expansion Valve 07334447 Electric Expand Valve Fitting 4304413208 Condenser Assy 01125200182 Strainer 07215201 4-way Valve 4300008201 Magnet Coil 4300040045 Condenser Support Plate 01175092 Terminal Board 420101852...
  • Page 151 U-Match Series DC Inverter Service Manual  Model: GUHD36ND3FO Exploded Views and spare parts list: GUHD36ND3FO Name of Part Product Code CF090W0771 Part Code Quantity Front Grill 01574106 Cabinet 01435007P Handle 26235253 Front Side Plate Sub-Assy 01305065P Axial Flow Fan 10335010 Chassis Sub-assy 01195244P...
  • Page 152 U-Match Series DC Inverter Service Manual Pressure Protect Switch 46020003 Valve Support Sub-Assy 01805200222P Silencer 07245012 Strainer 07215201 Right Side Plate Sub-Assy 0131520006801P Temperature Sensor 39008000049G Rear Grill 01475012 Clapboard Sub-Assy 0124525303 Condenser Assy 01125200196 Baffle Plate Sub-assy 01355200016P Pressure Protect Switch 4602000902 4-way Valve 43000338...
  • Page 153 U-Match Series DC Inverter Service Manual  Model: GUHD42ND3FO Exploded Views and spare parts list: GUHD42ND3FO Name of Part Product Code CF090W0840 Part Code Quantity Front Grill 1574100009 Diversion Circle 10474100001 Cabinet Assy 1514100006 Handle 26235253 Front Side Plate 01314100021P Axial Flow Fan 10434100003 Chassis Sub-assy...
  • Page 154 U-Match Series DC Inverter Service Manual Rear Side Plate Sub-Assy 01315200088P Temperature Sensor 3900028025G Rear Grill 1574100004 Clapboard 1245200007 Bidirection Strainer 7220016 Strainer 7415210 Electronic Expansion Valve 7334194 Electric Expand Valve Fitting 4300010839 Condenser Assy 1125200197 Supporting Strip 1894100026 4-way Valve 43000338 Pressure Protect Switch 4602000902...
  • Page 155 U-Match Series DC Inverter Service Manual  Model: GUHD48ND3FO Exploded Views and spare parts list: GUHD48ND3FO Name of Part Product Code CF090W0781 Part Code Quantity Front Grill 01574100009 Diversion Circle 10474100001 Cabinet Assy 01514100006 Handle 26235253 Front Side Plate 01314100021P Axial Flow Fan 10434100003 Chassis Sub-assy...
  • Page 156 U-Match Series DC Inverter Service Manual Rear Side Plate Sub-Assy 01315200088P Temperature Sensor 3900028025G Rear Grill 01574100004 Clapboard 01245200007 Bidirection Strainer 07220016 Strainer 07415210 Electronic Expansion Valve 07135176 Electric Expand Valve Fitting 43000344 Condenser Assy 1125200197 Supporting Strip 01894100026 4-way Valve 43000338 Pressure Protect Switch 4602000902...

  • Page 157: Indoor Unit

    U-Match Series DC Inverter Service Manual 5.2 Indoor Unit 5.2.1 Duct Type  Model: GFH18D3FI exploded view and spare parts list GFH18D3FI Name of Part Product Code CF060N0513 Part Code Quantity Bottom Cover Plate 01265409 Cover Of Air-In 01258650 Propeller Housing 22202029 Centrifugal fan 10319051...
  • Page 158 U-Match Series DC Inverter Service Manual Display Board 30294000007 Ambient Temperature Sensor 3900012123 Temperature Sensor 390001921G Hook 02112446 Right Side Plate Sub-Assy 01315200077 Choke Plug of Water Pipe 76712454 Right Support of Evaporator 01078625 Centrifugal fan assy 15405200031 Front Volute Casing 22202030 Return air frame sub-assy 01498641...
  • Page 159 U-Match Series DC Inverter Service Manual  Model: GFH18D3FI (with water pump) exploded view and spare parts list GFH18D3FI Name of Part Product Code CF060N0512 Part Code Quantity Main Board 30224000030 Terminal Board 42010194 Terminal Board 4201025301 Left Side Plate Assy 01315200098 Water Pump Assy 15405200075...
  • Page 160 U-Match Series DC Inverter Service Manual Right Side Plate Sub-Assy 01315200077 Ambient Temperature Sensor 3900012123 Temperature Sensor 390001921G Display Board 30294000007 Top Cover Board Sub-assy 01265200095 Front Volute Casing 22202030 Fan Motor 15704100001 Supporter 01804100140 Return air frame sub-assy 01498641 Hook 02112446 Centrifugal fan assy...
  • Page 161 U-Match Series DC Inverter Service Manual Model: GFH24D3FI exploded view and spare parts list GFH24D3FI Name of Part Product Code CF060N0523 Part Code Quantity Blower 15012454 Blower Mounting Plate Sub-Assy 01325200039 Support Sub-assy 01805200164 Supporter 01804100140 Brushless DC Motor 15705200006 Blower 15012458 Centrifugal fan assy...
  • Page 162 U-Match Series DC Inverter Service Manual  Model: GFH24D3FI (with water pump) exploded view and spare parts list GFH24D3FI Name of Part Product Code CF060N0522 Part Code Quantity Filter Sub-Assy 11125303 Choke Plug of Drain Pipe 76712455 Lower Cover Plate Sub-Assy 01265304 Water Tray Assy 01285317...
  • Page 163 U-Match Series DC Inverter Service Manual  Model: GFH30D3FI exploded view and spare parts list GFH30D3FI Name of Part Product Code CF060N0580 Part Code Quantity Blower 15012454 Blower Mounting Plate Sub-Assy 01325200039 Support Sub-assy 01805200164 Supporter 01804100140 Brushless DC Motor 15705200006 Blower 15012458...
  • Page 164 U-Match Series DC Inverter Service Manual  Model: GFH30D3FI (with water pump) exploded view and spare parts list GFH30D3FI Name of Part Product Code CF060N0590 Part Code Quantity Filter Sub-Assy 11125303 Choke Plug of Drain Pipe 76712455 Lower Cover Plate Sub-Assy 01265304 Water Tray Assy 01285317...
  • Page 165 U-Match Series DC Inverter Service Manual Tube sensor 3900012128 Left Side Plate Assy 01314155 filter guide groove sub-assy 02285301 Above data is subject to change without notice, pls reference the SP in global service website.  Model: GFH36D3FI exploded view and spare parts list GFH36D3FI Name of Part Product Code...
  • Page 166 U-Match Series DC Inverter Service Manual Ambient Temperature Sensor 3900012123 Temperature Sensor 390001921G Hook 02112466 Display Board 30294000007 Above data is subject to change without notice, pls reference the SP in global service website.  Model: GFH36D3FI (with water pump) exploded view and spare parts list GFH36D3FI Name of Part Product Code...
  • Page 167 U-Match Series DC Inverter Service Manual Brushless DC Motor 15709400006 Propeller Housing(Upper) 26904100051 Hook 02112466 Propeller Housing(Lower) 26904100052 Top Cover Board Assy 01265200086 Left Side Plate Assy 01315306 Temperature Sensor 390001921G Display Board 30294000007 Ambient Temperature Sensor 3900012123 Above data is subject to change without notice, pls reference the SP in global service website. ...
  • Page 168 U-Match Series DC Inverter Service Manual Main Board 30224000030 Electric Box Assy 01395200453 Strainer 07220005 Blower Mounting Plate Sub-Assy 01325200044 Brushless DC Motor 15709400006 Ambient Temperature Sensor 3900012123 Temperature Sensor 390001921G Hook 02112466 Display Board 30294000007 Above data is subject to change without notice, pls reference the SP in global service website. ...
  • Page 169 U-Match Series DC Inverter Service Manual Terminal Board 42010194 Terminal Board 4201025301 Electric Box Assy 01395200453 Blower Mounting Plate Sub-Assy 01325200044 Centrifugal Fan 10424100001 Brushless DC Motor 15709400006 Propeller Housing(Upper) 26904100051 Hook 02112466 Propeller Housing(Lower) 26904100052 Top Cover Board Assy 01265200086 Left Side Plate Assy 01315306...
  • Page 170 U-Match Series DC Inverter Service Manual Blower Mounting Plate Sub-Assy 01325200057 Propeller Housing(Lower) 26905200011 Bottom Cover Plate Assy 01265200045 Choke Plug of Drain Pipe 76712455 Electric Box Assy 01395200454 Right Side Plate Assy 0131520006601 Water Tray Assy 01285200025 Evaporator Assy 01025200055 Filter Sub-Assy 111253036...
  • Page 171 U-Match Series DC Inverter Service Manual Pump Drainpipe 05235301 Water Level Switch 4501270301 Bottom Cover Plate Assy 01265200045 Water Tray Assy 01285200025 Filter Sub-Assy 111253036 Evaporator Assy 01025200054 Choke Plug of Drain Pipe 76712455 Left Side Plate Sub-Assy 01315200064 Ambient Temperature Sensor 3900012123 Tube sensor 3900012128...
  • Page 172 U-Match Series DC Inverter Service Manual Rear Grill 26909400007 Centrifugal Fan 10429400001 Water Tray Assy 01289400004 Supporter 01809400007 Evaporator Assy 01029400013 Left Side Plate Sub-Assy 01319400012 Body Installing Support 01332705 Front Side Plate 01319400014 Sub-Assy Electric Box Assy 01399400114 Terminal Board 4201025301 Transformer 43110286...
  • Page 173 U-Match Series DC Inverter Service Manual  Model: GKH24D3FI exploded view and spare parts list. GKH24D3FI Product Name of Part ET010N0811 Code Part Code Quantity Diversion Circle 10372701 Centrifugal Fan 10312705 Water Tray Assy 20182701 Evaporator Support Assy 01072703 0102940004 Evaporator Assy Connected Board Assy of 01074042...
  • Page 174 U-Match Series DC Inverter Service Manual Water Level Switch 45018012 Pump Drainpipe 05230026 Right Side Plate Assy 01302716 Water Pump 43130324 1570940000 Brushless DC Motor Rear Side Plate Assy 01302714 Remote Controller 30510516 Drain Hose Sub-Assy 05232702 Temperature Sensor 390001921G Room Sensor 390001912 Above data is subject to change without notice, pls reference the SP in global service website.
  • Page 175 U-Match Series DC Inverter Service Manual  Model: GKH30D3FI exploded view and spare parts list. GKH30D3FI Name of Part Product Code ET010N0840 Part Code Quantity Centrifugal Fan 10310101 Water Tray Assy 20182701 Evaporator Assy 01029400042 Tube Exit Plate Assy 01382715 Connection Sheet Assy 01349400007 Body Installing Plate...
  • Page 176 U-Match Series DC Inverter Service Manual  Model: GKH36D3FI exploded view and spare parts list. GKH36D3FI Name of Part Product Code ET010N0821 Part Code Quantity Centrifugal Fan 10310101 Water Tray Assy 20182701 Evaporator Assy 01029400042 Tube Exit Plate Assy 01382715 Connection Sheet Assy 01349400007 Body Installing Plate...
  • Page 177 U-Match Series DC Inverter Service Manual  Model: GKH42D3FI exploded view and spare parts list. GKH42D3FI Name of Part Product Code ET010N0850 Part Code Quantity Centrifugal Fan 10310101 Water Tray Assy 20182701 Evaporator Assy 01029400042 Tube Exit Plate Assy 01382715 Connection Sheet Assy 01349400007 Body Installing Plate...
  • Page 178 U-Match Series DC Inverter Service Manual  Model: GKH48D3FI exploded view and spare parts list. GKH48D3FI Name of Part Product Code ET010N0831 Part Code Quantity Terminal Board 4201025801 Terminal Board 4201025301 Main Board 30224000028 Water Tray Assy 01289400002 Connection Sheet Sub-Assy 01349400002 01344100075/01344100 Tube Exit Plate Sub-assy...
  • Page 179 U-Match Series DC Inverter Service Manual 5.2.3 Floor Ceiling Type  Model: GTH18D3FI exploded view and spare parts list. GTH18D3FI Name of Part Product Code ED020N1081 Part Code Quantity Temperature Sensor 390001923 Room Sensor 39000191 Connection Board 02229406 Right Cover Plate 26909444 Plate Board of Water Releasing 26909442...
  • Page 180 U-Match Series DC Inverter Service Manual Connecting Rod 26909411 Rotating Shaft 26909412 Stepping Motor 1521240206 Installation Supporting Frame 01809401 Left Side Plate Sub-Assy 0131942801 Electric Box Assy 01399400113 Main Board 30224000029 Left Cover Plate 2690944302 Terminal Board 42010178 Terminal Board 4201025301 Remote Controller 30510516...
  • Page 181 U-Match Series DC Inverter Service Manual  Model: GTH24D3FI Exploded Views and spare parts list: GTH24D3FI Name of Part Product Code ED020N1091 Part Code Quantity Temperature Sensor 390001923 Room Sensor 39000191 Connection Board 02229406 Right Cover Plate 26909444 Plate Board of Water Releasing Flume 26909442 Installation Supporting Frame 01809402...
  • Page 182 U-Match Series DC Inverter Service Manual Stepping Motor 1521240206 Installation Supporting Frame 01809401 Left Side Plate Sub-Assy 0131942801 Electric Box Assy 01399400113 Main Board 30224000029 Left Cover Plate 2690944302 Terminal Board 42010178 Terminal Board 4201025301 Remote Controller 30510516 Mid-clapboard sub-assy 01249416 Support Of Motor Bearing 01792408...
  • Page 183 U-Match Series DC Inverter Service Manual  Model: GTH30D3FI Exploded Views and spare parts list: GTH30D3FI Name of Part Product Code ED020N1120 Part Code Quantity Remote Controller 30510516 Temperature Sensor 390001923 Room Sensor 39000191 Swing Lever 10582008 Air Louver 26909418 Swing Lever 10582009 Right Cover Plate...
  • Page 184 U-Match Series DC Inverter Service Manual Front Connection Board 01349408P Supporter 26909409 Rear Side Plate Assy 01319400005 Fixed Mount 26909426R Display Board 30294000009 Evaporator Assy 01029400041 Rotating Shaft 26909413 Connecting Rod 26909411 Rotating Shaft 26909412 Stepping Motor 1521240206 Left Foam Assy 12509408 Installation Supporting Frame 01809401...
  • Page 185 U-Match Series DC Inverter Service Manual  Model: GTH36D3FI exploded view and spare parts list. GTH36D3FI Name of Part Product Code ED020N1101 Part Code Quantity Remote Controller 30510516 Temperature Sensor 390001923 Room Sensor 39000191 Swing Lever 10582008 Air Louver 26909418 Swing Lever 10582009 Right Cover Plate...
  • Page 186 U-Match Series DC Inverter Service Manual Front Connection Board 01349408P Supporter 26909409 Rear Side Plate Assy 01319400005 Fixed Mount 26909426R Display Board 30294000009 Evaporator Assy 01029400050 Rotating Shaft 26909413 Connecting Rod 26909411 Rotating Shaft 26909412 Stepping Motor 1521240206 Left Foam Assy 12509408 Installation Supporting Frame 01809401...
  • Page 187 U-Match Series DC Inverter Service Manual  Model: GTH42D3FI exploded view and spare parts list. GTH42D3FI Name of Part Product Code ED020N1130 Part Code Quantity Remote Controller 30510516 Temperature Sensor 390001923 Room Sensor 39000191 Swing Lever 10582008 Air Louver 26909418 Swing Lever 10582009 Right Cover Plate...
  • Page 188 U-Match Series DC Inverter Service Manual Front Connection Board 01349408P Supporter 26909409 Rear Side Plate Assy 01319400005 Fixed Mount 26909426R Display Board 30294000009 Evaporator Assy 01029400049 Rotating Shaft 26909413 Connecting Rod 26909411 Rotating Shaft 26909412 Stepping Motor 1521240206 Left Foam Assy 12509408 Installation Supporting Frame 01809401...
  • Page 189 U-Match Series DC Inverter Service Manual  Model: GTH48D3FI exploded view and spare parts list. GTH48D3FI Name of Part Product Code ED020N1111 Part Code Quantity Water Tray Assy 01289401 Tube sensor 3900020720G Room Sensor 39000191 Remote Controller 30510516 Air Louver 26909418 Right Cover Plate 26909422...
  • Page 190 U-Match Series DC Inverter Service Manual Board Guide Louver 10619405 Front Connection Board 01349404P Display Board 30294000009 Fixed Mount 26909426R Evaporator Assy 0102947101 Stepping Motor 1521240206 Left Foam Assy 12509437 Rear Side Plate Sub-Assy 01319442 Installation Supporting Frame 01809421 Electric Box Assy 01399400115 Main Board 30224000029...
  • Page 191 U-Match Series DC Inverter Service Manual JF00302305...

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