Gree GUHD18ND3FO User manual

U-MATCHSERIESDCINVERTERAIR
CONDITIONERSSERVICEMANUAL
T1/R410A/60Hz
(GC201410 -І )

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............................................................................................................................... 11
3.3 Electrical Data................................................................................................................................... 11
4 PIPING DIAGRAM ........................................................................................................................................ 12
CONTROL.................................................................................................................................................................. 14
1 OPERATION FLOWCHART........................................................................................................................ 14
1.1 Cooling/Dry Operation.................................................................................................................... 14
1.2 Heating Operation............................................................................................................................ 15
2 WIRELESS REMOTE CONTROLLER ...................................................................................................... 16
2.1 Operation and Display View .......................................................................................................... 16
3 WIRED CONTROLLER................................................................................................................................ 18
3.1 Display View ...................................................................................................................................... 18
3.2 Operation View.................................................................................................................................. 20
4 OPERATION INSTRUCTION OF SPECIAL FUNCTIONS..................................................................... 23
4.1 Setting of Filter Clean Reminder Function................................................................................ 23
4.2 Low Temperature Drying Function.............................................................................................. 25
4.3 Lock Function ................................................................................................................................... 25
4.4 Memory Function.............................................................................................................................. 26
4.5 Door Control Function/Human Sensitive Function................................................................. 26
4.6 Switch between Fahrenheit and Centigrade ............................................................................. 26
4.7 Enquiry of Ambient Temperature................................................................................................. 26
4.8 Enquiry of Historical Malfunction ................................................................................................ 27
4.9 Debugging Function........................................................................................................................ 27
5 INSTALLATION OF WIRED CONTROLLER............................................................................................ 31
5.1 Standard Accessories..................................................................................................................... 31
5.2 Installation Position and Requirement....................................................................................... 31
5.3 Installation of Wired Controller..................................................................................................... 32
5.4 Removal of Wired Controller......................................................................................................... 32
6 TROUBLESHOOTING ................................................................................................................................. 33
6.1 Display of Error Code...................................................................................................................... 33
7 CENTRALIZED CONTROLLER................................................................................................................. 34

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.............................................................................................................. 78
2.1 Before Installation............................................................................................................................ 78
2.2 Installation Site................................................................................................................................. 78
2.3 Caution for Installation ................................................................................................................... 79
2.4 Dimension Data................................................................................................................................. 79
3 REFRIGERATION PIPING WORK............................................................................................................. 80
3.1 Refrigeration Piping Work Procedures and Caution in Connecting................................... 80
3.2 Specification of Connection Pipe................................................................................................. 85
4 ELECTRIC WIRING WORK ........................................................................................................................ 85
4.1 Wiring Precautions .......................................................................................................................... 85
4.2 Electrical Wiring................................................................................................................................ 86
MAINTENANCE........................................................................................................................................................ 94
1 TROUBLE TABLE......................................................................................................................................... 94
1.1 Main Control Malfunction............................................................................................................... 94
1.2 Description of Drive Malfunction ................................................................................................. 97
2 FLOW CHART OF TROUBLESHOOTING............................................................................................... 98
2.1 Troubleshooting Flow Chart of Main Control Malfunction.................................................... 98
2.2 Troubleshooting Flow Chart of Drive Malfunction................................................................. 105
2.3 Interface............................................................................................................................................ 110
2.4 IPM, PFC Testing Method............................................................................................................. 116
3 WIRING DIADRAM ..................................................................................................................................... 117
3.1 Outdoor unit..................................................................................................................................... 117
3.2 Indoor unit........................................................................................................................................ 120
4 DISASSEMBLY AND ASSEMBLY PROCEDURE OF MAIN PARTS................................................. 124
4.1 Outdoor Unit.................................................................................................................................... 124
4.2 Indoor Unit ....................................................................................................................................... 128
5 EXPLODED VIEWS AND SPARE PART LIST....................................................................................... 142
5.1 Outdoor Unit.................................................................................................................................... 142
5.2 Indoor Unit ....................................................................................................................................... 154

U-Match Series DC Inverter Service Manual
1
PRODUCT

U-Match Series DC Inverter Service Manual
2
PRODUCT
1 MODELS LIST
1.1 Outdoor Unit
Model Name
Product Code
Power Supply
(V, Ph, Hz)
Appearance
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
208/230V~60Hz

U-Match Series DC Inverter Service Manual
3
1.2 Indoor Unit
Type
Model Name
Product Code
Nominal Capacity
Cooling/Heating
(Btu/h)
Power Supply
(V, Ph, Hz)
Appearance
Duct
Type
GFH18D3FI
CF060N0512
CF060N0513
17100/18800
208/230V~60Hz
GFH24D3FI
CF060N0522
CF060N0523
23800/27200
208/230V~60Hz
GFH30D3FI
CF060N0580
CF060N0590
28200/31200
208/230V~60Hz
GFH36D3FI
CF060N0532
CF060N0533
34000/41000
208/230V~60Hz
GFH42D3FI
CF060N0600
CF060N0610
39500/44000
208/230V~60Hz
GFH48D3FI
CF060N0542
CF060N0543
48000/54500
208/230V~60Hz
Cassette
Type
GKH18D3FI
ET010N0801
17100/18400
208/230V~60Hz
GKH24D3FI
ET010N0811
23800/27200
208/230V~60Hz
GKH30D3FI
ET010N0840
28200/31200
208/230V~60Hz
GKH36D3FI
ET010N0821
34000/41000
208/230V~60Hz
GKH42D3FI
ET010N0850
39500/44000
208/230V~60Hz
GKH48D3FI
ET010N0831
48000/54500
208/230V~60Hz
Ceiling
Type
GTH18D3FI
ED020N1081
17100/19100
208/230V~60Hz
GTH24D3FI
ED020N1091
23800/27200
208/230V~60Hz
GTH30D3FI
ED020N1120
28200/31200
208/230V~60Hz
GTH36D3FI
ED020N1101
34000/41000
208/230V~60Hz
GTH42D3FI
ED020N1130
39500/44000
208/230V~60Hz
GTH48D3FI
ED020N1111
48000/54500
208/230V~60Hz
Note: 1 Ton =12000Btu/h = 3.517kW
Note: The universal outdoor units means that the customer can choose any of three kind of indoor unit to
match the outdoor unit without any change with it.

U-Match Series DC Inverter Service Manual
4
2 NOMENCLATURE
2.1 Outdoor Unit
G
U
H
D
18
N
D
3
F
O
1
2
3
4
5
6
7
8
9
10
NO.
Description
Options
1
Gree Electric Appliances Inc
Capital Letter :G
2
Unit Type
U=U-Match Outdoor Unit
3
Product Type
C=Cool Only
H=Heat Pump without Aux Electric Heaters
4
Compressor Power Supply
Type Code
N=Constant Frequency
D=DC Inverter
A=AC Inverter
5
Nominal Cooling Capacity
Nominal Cooling Capacity=Number×1000Btu/h
6
Climate Type
N=Climate T1 Condition
T= Climate T3 Condition
7
Power Supply Code
K= 220-240V~ 50Hz
M=380-415V 3N~ 50Hz
D=208/230V ~ 60Hz
8
Refrigerant
1 =R22; 2=R407C; 3=R410A
9
Design Code
Design Code: A, B, C, D……
Design Change Code=0 (default)
1,2,3......
10
Unit Code
O=Outdoor unit
2.2 Indoor Unit
G
F
H
18
T
D
3
F
I
1
2
3
4
5
6
7
8
9
NO.
Description
Options
1
Gree Electric Appliances Inc
Capital Letter: G
2
Unit Type
F=Duct Type; K=Cassette Type; T=Floor-ceiling Type
3
Product Type
C=Cool Only; H=Heat Pump without Aux Electric Heaters
4
Nominal Cooling Capacity
Nominal Cooling Capacity=Number×1000Btu/h
5
Climate Type
Omit=Climate T1 Condition;
T=Climate T3 Condition
6
Power Supply Code
K=220-240V~ 50Hz
M=380-415V 3N~ 50Hz
D=208/230V ~ 60Hz
7
Refrigerant
1=R22; 2=R407C; 3=R410A
8
Design Code
Design Code: A, B, C, D……
Design Change Code=0 (default)
1,2,3......
9
Unit Code
I=indoor unite

U-Match Series DC Inverter Service Manual
5
3 PRODUCT DATA
3.1 Product Data of Indoor Unit
3.1.1 Duct Type
Model
Indoor unit
GFH18D3FI
GFH24D3FI
GFH30D3FI
Product Code
CF060N0512
CF060N0513
CF060N0522
CF060N0523
CF060N0580
CF060N0590
Outdoor unit
GUHD18ND3FO
GUHD24ND3FO
GUHD30ND3FO
Product Code
CF090W0751
CF090W0761
CF090W0830
Capacity
Cooling Capacity
Btu/h
17100(5400~19800)
23800(7400~29000)
28200(8200~29600)
Heating Capacity
Btu/h
18800(4700~23200)
27200(8200~32400)
31200(8200~33600)
Power Input
Cooling
kW
1.55(0.55~1.75)
2.23(0.85~2.50)
3.30(0.85~3.70)
Heating
kW
1.65(0.50~1.90)
2.36(0.80~2.75)
3.10(0.80~3.50)
SEER / HSPF
(Btu/h)/W
16.00/9.50
16.00/9.00
16.00/9.00
Indoor Unit
GFH18D3FI
GFH24D3FI
GFH30D3FI
Power Supply
V/Ph/Hz
208/230V~60Hz
208/230V~60Hz
208/230V~60Hz
Heat Exchange
-
Cross Fin Coil
Cross Fin Coil
Cross Fin Coil
Fan
Drive
-
Direct
Direct
Direct
Motor Output
kW
0.06×1
0.15×1
0.15×1
Air Flow
m3/h(CFM)
1000(585)
1400(820)
1400(820)
Rated Ext. Static
Pressure
Pa(InWg)
25(0.1)
25(0.1)
37(0.15)
Ext. Static Pressure
Range
Pa(InWg)
0~30(0~0.12)
0~75(0~0.3)
0~75(0~0.3)
Sound Pressure Level(SS/H/M/L)
dB(A)
40/39/36/28
47/46/44/40
47/46/44/40
Air Filter
-
PP
PPKZ
PPKZ
Drain Piping
mm(inch)
Φ30×1.5
(φ1.18×0.06)
Φ20×1.2
(φ0.79×0.05)
Φ20×1.2
(φ0.79×0.05)
Outline Dimensions (W×H×D)
mm
(inch)
1037×266×721
(40.8×10.5×28.4)
1279×268×558
(50.4×10.6×22.0)
1279×268×558
(50.4×10.6×22.0)
Net Weight
kg(lb)
33.0(72.8)
34.0(75.0)
35.0(77.2)
Outdoor Unit
GUHD18ND3FO
GUHD24ND3FO
GUHD30ND3FO
Power Supply
V/Ph/Hz
208/230V~60Hz
208/230V~60Hz
208/230V~60Hz
Heat Exchange
-
Cross Fin Coil
Cross Fin Coil
Cross Fin Coil
Compressor
Type
-
Rotary
Rotary
Rotary
Power Input
W
1440
2550
2550
Refrigerant
Control
-
Electronic Expansion
Valve
Electronic Expansion
Valve
Electronic Expansion
Valve
Charge
kg(oz)
1.4(49.4)
2.2(77.6)
2.4(84.7)
Outline Dimensions (W×H×D)
mm(inch)
955×700×396
(37.6×27.6×15.6)
980×790×427
(38.6×31.1×16.8)
980×790×427
(38.6×31.1×16.8)
Net Weight
kg(lb)
48.0(105.8)
69.0(152.1)
72.0(158.8)
Piping
Connections
Liquid
Inch
Φ1/4
Φ3/8
Φ3/8
Gas
Inch
Φ1/2
Φ5/8
Φ5/8
Max. Length
m(ft)
20(65.6)
30(98.4)
30(98.4)
Max. Height
m(ft)
15(49.2)
15(49.2)
15(49.2)

U-Match Series DC Inverter Service Manual
6
Model
Indoor unit
GFH36D3FI
GFH42D3FI
GFH48D3FI
Product Code
CF060N0532
CF060N0533
CF060N0600
CF060N0610
CF060N0542
CF060N0543
Outdoor unit
GUHD36ND3FO
GUHD42ND3FO
GUHD48ND3FO
Product Code
CF090W0771
CF090W0840
CF090W0781
Capacity
Cooling Capacity
Btu/h
34000(10800~39000)
39500(12000~42500)
48000(20400~49500)
Heating Capacity
Btu/h
41000(9800~49500)
44000(13000~52500)
54500(17500~58000)
Power Input
Cooling
kW
3.28(0.70~4.50)
4.15(0.65~4.70)
5.15(1.40~5.60)
Heating
kW
3.75(0.70~4.60)
3.90(0.76~4.75)
5.15(1.30~5.50)
SEER / HSPF
(Btu/h)/W
16.00/9.00
16.00/9.00
16.00/9.00
Indoor Unit
GFH36D3FI
GFH42D3FI
GFH48D3FI
Power Supply
V/Ph/Hz
208/230V~60Hz
208/230V~60Hz
208/230V~60Hz
Heat Exchange
-
Cross Fin Coil
Cross Fin Coil
Cross Fin Coil
Fan
Drive
-
Direct
Direct
Direct
Motor Output
kW
0.25×1
0.25×1
0.56×1
Air Flow
m3/h(CFM)
2000(1175)
2000(1175)
2500(1470)
Rated Ext. Static
Pressure
Pa(InWg)
37(0.15)
37(0.15)
50(0.2)
Ext. Static Pressure
Range
Pa(InWg)
0~100(0~0.4)
0~100(0~0.4)
0~125(0~0.5)
Sound Pressure Level(SS/H/M/L)
dB(A)
53/52/48/44
53/52/48/44
55/53/49/45
Air Filter
-
PPKZ
PPKZ
PPKZ
Drain Piping
mm(inch)
Φ20×1.2
(φ0.79×0.05)
Φ20×1.2
(φ0.79×0.05)
Φ20×1.2
(φ0.79×0.05)
Outline Dimensions (W×H×D)
mm
(inch)
1226×290×775
(48.3×11.4×30.5)
1226×290×775
(48.3×11.4×30.5)
1340×350×750
(52.8×13.8×29.5)
Net Weight
kg(lb)
46.0(101.4)
46.0(101.4)
56.0(123.5)
Outdoor Unit
GUHD36ND3FO
GUHD42ND3FO
GUHD48ND3FO
Power Supply
V/Ph/Hz
208/230V~60Hz
208/230V~60Hz
208/230V~60Hz
Heat Exchange
-
Cross Fin Coil
Cross Fin Coil
Cross Fin Coil
Compressor
Type
-
Rotary
Rotary
Rotary
Power Input
W
4150
4150
4580
Refrigerant
Control
-
Electronic Expansion
Valve
Electronic Expansion
Valve
Electronic Expansion
Valve
Charge
kg(oz)
3.5(123.5)
3.7(130.5)
4.0(141.1)
Outline Dimensions (W×H×D)
mm(inch)
1107×1100×440
(43.6×43.3×17.3)
958×1349×412
(37.7×53.1×16.2)
958×1349×412
(37.7×53.1×16.2)
Net Weight
kg(lb)
93.0(205.1)
95.0(209.5)
105.0(231.5)
Piping
Connections
Liquid
Inch
Φ3/8
Φ3/8
Φ3/8
Gas
Inch
Φ5/8
Φ5/8
Φ5/8
Max. Length
m(ft)
30(98.4)
50(164.0)
50(164.0)
Max. Height
m(ft)
15(49.2)
30(98.4)
30(98.4)

U-Match Series DC Inverter Service Manual
7
3.1.2 Cassette Type
Model
Indoor unit
GKH18D3FI
GKH24D3FI
GKH30D3FI
Product Code
ET010N0801
ET010N0811
ET010N0840
Outdoor unit
GUHD18ND3FO
GUHD24ND3FO
GUHD30ND3FO
Product Code
CF090W0751
CF090W0761
CF090W0830
Capacity
Cooling Capacity
Btu/h
17100(5400~18700)
23800(8200~29000)
28200(8800~31400)
Heating Capacity
Btu/h
18400(4700~22200)
27200(8200~32400)
31200(8200~33600)
Power Input
Cooling
kW
1.70(0.55~1.75)
2.23(0.85~2.50)
2.70(0.85~3.70)
Heating
kW
1.80(0.50~1.90)
2.36(0.80~2.75)
2.50(0.80~3.50)
SEER / HSPF
(Btu/h)/W
16.00/9.50
16.00/9.00
17.00/9.00
Indoor Unit
GKH18D3FI
GKH24D3FI
GKH30D3FI
Power Supply
V/Ph/Hz
208/230V~ 60Hz
208/230V~ 60Hz
208/230V~ 60Hz
Heat Exchange
-
Cross Fin Coil
Cross Fin Coil
Cross Fin Coil
Fan
Drive
-
Direct
Direct
Direct
Motor Output
kW
0.045×1
0.045×1
0.075×1
Air Flow
m3/h(CFM)
760(445)
1300(765)
1500(880)
Sound Pressure Level(SS/H/M/L)
dB(A)
47/46/44/37
47/46/42/38
49/48/45/40
Air Filter
-
PP
ABS+PP
ABS+PP
Drain Piping
mm(inch)
Φ25×1.5
(φ0.98×0.06)
Φ25×1.5
(φ0.98×0.06)
Φ25×1.5
(φ0.98×0.06)
Outline Dimensions (W×H×D)
mm(inch)
665×240×596
(26.2×9.4×23.5)
917×240×840
(36.1×9.4×33.1)
917×320×840
(36.1×12.6×33.1)
Net Weight
kg(lb)
20.0(44.1)
27.0(59.5)
32.0(70.6)
Outdoor Unit
GUHD18ND3FO
GUHD24ND3FO
GUHD30ND3FO
Power Supply
V/Ph/Hz
208/230V~ 60Hz
208/230V~ 60Hz
208/230V~ 60Hz
Heat Exchange
-
Cross Fin Coil
Cross Fin Coil
Cross Fin Coil
Compressor
Type
-
Rotary
Rotary
Rotary
Power Input
W
1440
2550
2550
Refrigerant
Control
-
Electronic
Expansion Valve
Electronic
Expansion Valve
Electronic
Expansion Valve
Charge
kg(oz)
1.4(49.4)
2.2(77.6)
2.4(84.7)
Outline Dimensions (W×H×D)
mm(inch)
955×700×396
(37.6×27.6×15.6)
980×790×427
(38.6×31.1×16.8)
980×790×427
(38.6×31.1×16.8)
Net Weight
kg(lb)
48.0(105.8)
69.0(152.1)
72.0(158.8)
Piping
Connections
Liquid
Inch
Φ1/4
Φ3/8
Φ3/8
Gas
Inch
Φ1/2
Φ5/8
Φ5/8
Max. Length
m(ft)
20(65.6)
30(98.4)
30(98.4)
Max. Height
m(ft)
15(49.2)
15(49.2)
15(49.2)

U-Match Series DC Inverter Service Manual
8
Model
Indoor unit
GKH36D3FI
GKH42D3FI
GKH48D3FI
Product Code
ET010N0821
ET010N0850
ET010N0831
Outdoor unit
GUHD36ND3FO
GUHD42ND3FO
GUHD48ND3FO
Product Code
CF090W0771
CF090W0840
CF090W0781
Capacity
Cooling Capacity
Btu/h
34000(10800~39000)
39500(11000~41000)
48000(20400~50500)
Heating Capacity
Btu/h
41000(9800~49500)
44000(12000~51000)
54500(17500~61500)
Power Input
Cooling
kW
3.28(0.75~4.50)
4.40(0.53~4.65)
5.50(1.30~5.70)
Heating
kW
3.75(0.60~4.80)
4.45(0.64~4.80)
4.80(1.20~5.40)
SEER / HSPF
(Btu/h)/W
16.00/9.00
16.00/9.00
16.00/9.00
Indoor Unit
GKH36D3FI
GKH42D3FI
GKH48D3FI
Power Supply
V/Ph/Hz
208/230V~ 60Hz
208/230V~ 60Hz
208/230V~ 60Hz
Heat Exchange
-
Cross Fin Coil
Cross Fin Coil
Cross Fin Coil
Fan
Drive
-
Direct
Direct
Direct
Motor Output
kW
0.075×1
0.075×1
0.1×1
Air Flow
m3/h(CFM)
1860(1095)
1860(1095)
2300(1350)
Sound Pressure Level(SS/H/M/L)
dB(A)
51/49/46/43
51/49/46/43
53/52/47/41
Air Filter
-
ABS+PP
ABS+PP
ABS+PP
Drain Piping
mm(inch)
Φ25×1.5
(φ0.98×0.06)
Φ25×1.5
(φ0.98×0.06)
Φ25×1.5
(φ0.98×0.06)
Outline Dimensions (W×H×D)
mm(inch)
917×320×840
(36.1×12.6×33.1)
917×320×840
(36.1×12.6×33.1)
910×290×910
(35.8×11.4×35.8)
Net Weight
kg(lb)
32.0(70.6)
32.0(70.6)
43.0(94.8)
Outdoor Unit
GUHD36ND3FO
GUHD42ND3FO
GUHD48ND3FO
Power Supply
V/Ph/Hz
208/230V~ 60Hz
208/230V~ 60Hz
208/230V~ 60Hz
Heat Exchange
-
Cross Fin Coil
Cross Fin Coil
Cross Fin Coil
Compressor
Type
-
Rotary
Rotary
Rotary
Power Input
W
4150
4150
4580
Refrigerant
Control
-
Electronic
Expansion Valve
Electronic
Expansion Valve
Electronic
Expansion Valve
Charge
kg(oz)
3.5(123.5)
3.7(130.5)
4.0(141.1)
Outline Dimensions (W×H×D)
mm(inch)
1107×1100×440
(43.6×43.3×17.3)
958×1349×412
(37.7×53.1×16.2)
958×1349×412
(37.7×53.1×16.2)
Net Weight
kg(lb)
93.0(205.1)
95.0(209.5)
105.0(231.5)
Piping
Connections
Liquid
Inch
Φ3/8
Φ3/8
Φ3/8
Gas
Inch
Φ5/8
Φ5/8
Φ5/8
Max. Length
m(ft)
30(98.4)
50(164.0)
50(164.0)
Max. Height
m(ft)
15(49.2)
30(98.4)
30(98.4)

U-Match Series DC Inverter Service Manual
9
3.1.3 Floor-ceiling Type
Model
Indoor unit
GTH18D3FI
GTH24D3FI
GTH30D3FI
Product Code
ED020N1081
ED020N1091
ED020N1120
Outdoor unit
GUHD18ND3FO
GUHD24ND3FO
GUHD30ND3FO
Product Code
CF090W0751
CF090W0761
CF090W0830
Capacity
Cooling Capacity
Btu/h
17100(5400~19800)
23800(8200~27800)
28200(8800~31400)
Heating Capacity
Btu/h
19100(4700~23200)
27200(8200~30600)
31200(8200~33600)
Power Input
Cooling
kW
1.55(0.55~1.75)
2.23(0.85~2.50)
2.40(0.85~3.70)
Heating
kW
1.55(0.50~1.90)
2.36(0.80~2.75)
2.60(0.80~3.50)
SEER / HSPF
(Btu/h)/W
17.00/9.50
16.00/9.00
17.00/9.00
Indoor Unit
GTH18D3FI
GTH24D3FI
GTH30D3FI
Power Supply
V/Ph/Hz
208/230V~ 60Hz
208/230V~ 60Hz
208/230V~ 60Hz
Heat Exchange
-
Cross Fin Coil
Cross Fin Coil
Cross Fin Coil
Fan
Drive
-
Direct
Direct
Direct
Motor Output
kW
0.06×1
0.06×1
0.15×1
Air Flow
m3/h(CFM)
1000(585)
1200(705)
1500(880)
Sound Pressure Level(SS/H/M/L)
dB(A)
44/42/38/32
49/48/46/40
49/46/44/38
Air Filter
-
PP
PP
PP
Drain Piping
mm(inch)
Φ17×1.75
(φ0.67×0.07)
Φ17×1.75
(φ0.67×0.07)
Φ17×1.75
(φ0.67×0.07)
Outline Dimensions (W×H×D)
mm(inch)
1220×225×700
(48.0×8.9×27.6)
1220×225×700
(48.0×8.9×27.6)
1420×245×700
(55.9×9.6×27.6)
Net Weight
kg(lb)
39.0(86.0)
40.0(88.2)
48.0(105.8)
Outdoor Unit
GUHD18ND3FO
GUHD24ND3FO
GUHD30ND3FO
Power Supply
V/Ph/Hz
208/230V~ 60Hz
208/230V~ 60Hz
208/230V~ 60Hz
Heat Exchange
-
Cross Fin Coil
Cross Fin Coil
Cross Fin Coil
Compressor
Type
-
Rotary
Rotary
Rotary
Power Input
W
1440
2550
2550
Refrigerant
Control
-
Electronic Expansion
Valve
Electronic Expansion
Valve
Electronic Expansion
Valve
Charge
kg(oz)
1.4(49.4)
2.2(77.6)
2.4(84.7)
Outline Dimensions (W×H×D)
mm(inch)
955×700×396
(37.6×27.6×15.6)
980×790×427
(38.6×31.1×16.8)
980×790×427
(38.6×31.1×16.8)
Net Weight
kg(lb)
48.0(105.8)
69.0(152.1)
72.0(158.8)
Piping
Connections
Liquid
Inch
Φ1/4
Φ3/8
Φ3/8
Gas
Inch
Φ1/2
Φ5/8
Φ5/8
Max. Length
m(ft)
20(65.6)
30(98.4)
30(98.4)
Max. Height
m(ft)
15(49.2)
15(49.2)
15(49.2)

U-Match Series DC Inverter Service Manual
10
Model
Indoor unit
GTH36D3FI
GTH42D3FI
GTH48D3FI
Product Code
ED020N1101
ED020N1130
ED020N1111
Outdoor unit
GUHD36ND3FO
GUHD42ND3FO
GUHD48ND3FO
Product Code
CF090W0771
CF090W0840
CF090W0781
Capacity
Cooling Capacity
Btu/h
34000(10800~39000)
39500(12000~42500)
48000(20400~50500)
Heating Capacity
Btu/h
41000(9800~49500)
44000(13000~52500)
54500(17500~61500)
Power Input
Cooling
kW
3.28(0.80~4.60)
4.05(0.60~4.70)
4.95(1.30~5.50)
Heating
kW
3.75(0.65~4.80)
4.05(0.69~4.80)
4.60(1.20~5.40)
SEER / HSPF
(Btu/h)/W
16.00/9.00
16.00/9.00
16.00/9.00
Indoor Unit
GTH36D3FI
GTH42D3FI
GTH48D3FI
Power Supply
V/Ph/Hz
208/230V~ 60Hz
208/230V~ 60Hz
208/230V~ 60Hz
Heat Exchange
-
Cross Fin Coil
Cross Fin Coil
Cross Fin Coil
Fan
Drive
-
Direct
Direct
Direct
Motor Output
kW
0.15×1
0.15×1
0.25×1
Air Flow
m3/h(CFM)
1900(1115)
1900(1115)
2300(1350)
Sound Pressure Level(SS/H/M/L)
dB(A)
54/53/51/46
55/54/52/47
56/55/50/46
Air Filter
-
PP
PP
PP
Drain Piping
mm(inch)
Φ17×1.75
(φ0.67×0.07)
Φ17×1.75
(φ0.67×0.07)
Φ17×1.75
(φ0.67×0.07)
Outline Dimensions (W×H×D)
mm(inch)
1420×245×700
(55.9×9.6×27.6)
1420×245×700
(55.9×9.6×27.6)
1700×245×700
(66.9×9.6×27.6)
Net Weight
kg(lb)
48.0(105.8)
50.0(110.3)
59.0(130.1)
Outdoor Unit
GUHD36ND3FO
GUHD42ND3FO
GUHD48ND3FO
Power Supply
V/Ph/Hz
208/230V~ 60Hz
208/230V~ 60Hz
208/230V~ 60Hz
Heat Exchange
-
Cross Fin Coil
Cross Fin Coil
Cross Fin Coil
Compressor
Type
-
Rotary
Rotary
Rotary
Power Input
W
4150
4150
4580
Refrigerant
Control
-
Electronic Expansion
Valve
Electronic Expansion
Valve
Electronic Expansion
Valve
Charge
kg(oz)
3.5(123.5)
3.7(130.5)
4.0(141.1)
Outline Dimensions (W×H×D)
mm(inch)
1107×1100×440
(43.6×43.3×17.3)
958×1349×412
(37.7×53.1×16.2)
958×1349×412
(37.7×53.1×16.2)
Net Weight
kg(lb)
93.0(205.1)
95.0(209.5)
105.0(231.5)
Piping
Connections
Liquid
Inch
Φ3/8
Φ3/8
Φ3/8
Gas
Inch
Φ5/8
Φ5/8
Φ5/8
Max. Length
m(ft)
30(98.4)
50(164.0)
50(164.0)
Max. Height
m(ft)
15(49.2)
30(98.4)
30(98.4)
Note: Nominal capacities are based on the follow conditions.
Indoor
Outdoor
Cooling
DB: 26.7℃(80.0℉)
WB: 19.4℃(67.0℉)
DB: 35.0℃(95.0℉)
WB: 23.9℃(75.0℉)
Heating
DB: 21.1℃(70.0℉)
WB: 15.6℃(60.0℉)
DB: 8.33℃(47.0℉)
WB: 6.11℃(43.0℉)
Piping Length
18k~48k units
7.6m(25.0ft)
The air volume is measured at the relevant standard external static pressure.
Noise is tested in the Semi anechoic room, so it should be slightly higher in the actual operation due to
environmental change.

U-Match Series DC Inverter Service Manual
11
3.2 Operation Range
Mode
Range of Outdoor Temperature
Cooling
-18.0℃(0℉)~48.0℃(118.4℉)
Heating
-18.0℃(0℉)~24.0℃(75.2℉)
3.3 Electrical Data
3.3.1 Outdoor unit
Table 1-3-1 Electrical Data of Outdoor Unit
Model
Compressor
Fan Motor
Fuse/Breaker
Capacity
Minimum
Circuit
Ampacity
Maximum
Overcurrent
Protection
Power Supply
Qty.
RLA
FLA
V/Ph/Hz
−
A
A
A
A
A
GUHD18ND3FO
208/230V ~ 60Hz
1
12.0
1.5
5/25
17
25
GUHD24ND3FO
208/230V ~ 60Hz
1
18.0
1.5
5/40
24
40
GUHD30ND3FO
208/230V ~ 60Hz
1
18.0
1.5
5/40
24
40
GUHD36ND3FO
208/230V ~ 60Hz
1
21.2
2.0
5/45
29
45
GUHD42ND3FO
208/230V ~ 60Hz
1
21.2
2*2.0
5/50
31
50
GUHD48ND3FO
208/230V ~ 60Hz
1
32.5
2*2.0
5/70
45
70
3.3.2 Indoor unit
Table 1-3-2 Electrical Data of Indoor Unit
Model
Power Supply
Fan Motor FLA
Fuse/Breaker
Capacity
Minimum Circuit
Ampacity
Maximum
Overcurrent
Protection
V/Ph/Hz
A
A
A
A
GFH18D3FI
208V/230V ~ 60Hz
0.6
5/15
1
15
GFH24D3FI
208V/230V ~ 60Hz
1.3
5/15
2
15
GFH30D3FI
208V/230V ~ 60Hz
1.3
5/15
2
15
GFH36D3FI
208V/230V ~ 60Hz
2.1
5/15
3
15
GFH42D3FI
208V/230V ~ 60Hz
2.1
5/15
3
15
GFH48D3FI
208V/230V ~ 60Hz
4.0
5/15
5
15
GKH18D3FI
208V/230V ~ 60Hz
0.5
5/15
1
15
GKH24D3FI
208V/230V ~ 60Hz
0.5
5/15
1
15
GKH30D3FI
208V/230V ~ 60Hz
0.9
5/15
1.5
15
GKH36D3FI
208V/230V ~ 60Hz
0.9
5/15
1.5
15
GKH42D3FI
208V/230V ~ 60Hz
0.9
5/15
1.5
15
GKH48D3FI
208V/230V ~ 60Hz
1.5
5/15
2
15
GTH18D3FI
208V/230V ~ 60Hz
0.6
5/15
1
15
GTH24D3FI
208V/230V ~ 60Hz
0.6
5/15
1
15
GTH30D3FI
208V/230V ~ 60Hz
1.4
5/15
2
15
GTH36D3FI
208V/230V ~ 60Hz
1.4
5/15
2
15
GTH42D3FI
208V/230V ~ 60Hz
1.4
5/15
2
15
GTH48D3FI
208V/230V ~ 60Hz
2.1
5/15
3
15

U-Match Series DC Inverter Service Manual
12
Notes:
RLA: Rated load amperes (marked in the nameplate of the outdoor unit)
FLA: Full load current
①The fuse is located on the main board.
②Install 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.
③Take 2 pieces of power cord of 0.75mm2(AWG18) as the communication lines between
indoor and outdoor unit, with their longest lengths of 50m (164feet). Please select the
appropriate line length as per the actual installation conditions. The communication lines can
not be twisted together. For the unit (≤30k), it’s recommended to use 8m (26-1/4feet) long
communication line.
④Take 2 pieces of power cord of 0.75mm2(AWG18) as the communication lines between the
wired controller and the indoor unit, with their longest lengths of 30m (98-2/5feet). Please
select the appropriate line length as per the actual installation conditions. The
communication lines can not be twisted together. It’s recommended to use 8m (26-1/4feet)
long communication line.
⑤The wire size of the communication line should be no less than 0.75mm2(AWG18). It’s
recommended to take 0.75mm2(AWG18) power cords as the communication line.
4 PIPING DIAGRAM
Indoor Unit
Outdoor Unit
TH-OE
TH-D
Condenser Filter
Electronic Expansion Valve Liquid Solid Valve
with Service Port
Liquid Solid
Valve
4-Way Valve
Muffler
TH-C Low Pressure Switch
Accumulator
High Pressure
Switch
Compressor
Gas Stop Valve
with Service Port Gas Stop
Valve
TH-IE Evaporator
TH-E
Cooling
Heating
TH-OE: Outdoor Environment Thermal Bulb
TH-C: Outdoor Condenser Thermal Bulb
TH-D: Compressor Discharge Thermal Bulb
TH-IE: Indoor Environment Thermal Bulb
TH-E: Indoor Evaporator Thermal Bulb
Filter
Filter
Notes: It is just a schematic diagram and some parts may differ from the real objects inside the unit.

U-Match Series DC Inverter Service Manual
13
CONTROL

U-Match Series DC Inverter Service Manual
14
CONTROL
1 OPERATION FLOWCHART
1.1 Cooling/Dry Operation
Satisfying open
Comp. condition
Temp of indoor
≤Set temp
Comp. stop
for 3 min NY
N
Y
Y
N
Open unit running at
cool or dry mode
Indoor fan run
Comp. and outdoor
fan run
Comp. and
outdoor fan stop
Power
On

U-Match Series DC Inverter Service Manual
15
1.2 Heating Operation
Satisfying open
comp. condition
N
Y
N
Y
Y
N
Power
On
Comp. and
outdoor
fan run
Avoid cool wind
(only when comp.
start)
Temp of indoor
≥Set temp
Comp. and
outdoor fan stop
Comp. stop
for 3 min
Open unit running
at heat mode

U-Match Series DC Inverter Service Manual
16
2 WIRELESS REMOTE CONTROLLER
2.1 Operation and Display View
Table 2-2-1 Operation instruction of wireless remote controller
No.
Name
Function Description
Signal
transmitter
Signal transmitter
ON/OFF
button
Press this button and the unit will be turned on; press it once more and the unit will be
turned off. When turning off the unit, the Sleep function will be canceled, but the
presetting time is still remained.
MODE
button
By pressing this button, Auto, Cool, Dry, Fan, Heat mode can be selected circularly.
Auto mode is default after power on. Under the Auto mode, the setting temperature will
not be displayed; Under the Heat mode, the initial value is 28°C (82°F); under other
modes, the initial value is 25°C (77°F).
AUTO; COOL; DRY; FAN; HEAT (only for cooling and heating
unit)

U-Match Series DC Inverter Service Manual
17
- button
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
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. Centigrade setting
range: 16~30; Fahrenheit scale setting range 61~86.
+ button
Preset temperature can be increased by pressing this button. Pressing and holding this
button for more than 2 seconds can make the temperature changed quickly until release
the 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. Centigrade setting
range: 16~30; Fahrenheit scale setting range 61~86.
FAN button
By pressing this button, Auto, Low, Middle, High speed can be circularly selected. After
power on, Auto fan speed is default.
Low speed
Middle speed
High speed
Note: Under the DRY mode, the fan will be kept running at the low speed and the fan speed
isn't adjustable.
SWING
UP/DOWN
button
Press this button to set up the swing angle, which circularly changes as below:
When the guide louver starts to swing up and down, if SWING functions are canceled, the
air guide louver will stop and remains at the current position.
Indicates the guide louver swings up and down among those five directions
(Simplified SWING function applicable for some Fan Coil Units: When the wireless
remote controller is energized initially with the unit under the OFF status, it should be set
by pressing the + button and the SWING button simultaneously, with the symbol
blinking twice. Then, after the unit is turned on, this function can be activated by pressing
the SWING button, with the displayed symbol indicating swing function is on and
without this displayed symbol indicating swing function is off).
CLOCK
button
By pressing this button, the clock is allowed to be set, with blinking, and then press
the +/- button to adjust the clock within 5 seconds. If the +/-button is pressed down
constantly for more than 2 seconds, the clock setting will be increased or decreased 10
minutes every 0.5 seconds. After that, another press on the CLOCK button accepts the
setting. 12:00 is the default, when the wireless remote controller is energized.
TIMER ON
button
When TIMER ON is activated, ON will blink while the symbol will disappear. Within 5
seconds it is allowed to set the ON time by pressing the +/- button. Each press will make
the time increase or decrease one minute. Besides, the time can also be set by pressing
the +/- button constantly. That is, in the early 2.5 seconds, the time will
increase/decrease quickly per single minute, and in the late 2.5, the time will
increase/decrease per ten minutes. After the desired time value is set, press TIENE ON
again to conform the setting within five seconds. After that, another press on TIMER ON
will cancel the setting. Prior to this setting, the clock shall be set to the actual time.