Gree GWH18MC-K3NNA2K/I User manual

GREE ELECTRIC APPLIANCES,INC.OF ZHUHAI
Change for Life
Service Manual
GWH18MC-K3NNA2K
GWH24MD-K3NNA2K
(Refrigerant R410A)
Model:

Service Manual
Table of contents
Table of Contents
Part Ė: Technical Information......................................................................... 1
1. Summary........................................................................................................................ 1
6SHFL¿FDWLRQV............................................................................................................ 2
6SHFL¿FDWLRQ6KHHW............................................................................................................. 2
2.2 Capacity Curve in Different Outdoor Temperature ............................................................. 4
2.3 Operation Data ................................................................................................................... 4
3. Outline Dimension Diagram.......................................................................... 5
3.1 Indoor Unit.......................................................................................................................... 5
3.2 Outdoor Unit ....................................................................................................................... 6
4. Refrigerant System Diagram........................................................................ 7
5. Electrical Part............................................................................................................. 8
5.1 Wiring Diagram................................................................................................................... 8
5.2 PCB Printed Diagram ........................................................................................................11
6. Function and Control........................................................................................ 13
6.1 Remote Controller Introduction ........................................................................................ 13
6.2 Brief Description of Modes and Functions........................................................................ 17
Part ė: Installation and Maintenance ................................................... 22
7. Notes for Installation and Maintenance............................................ 22
8. Installation.................................................................................................................. 24
8.1 Installation Dimension Diagram........................................................................................ 24
,QVWDOODWLRQ3DUWVFKHFNLQJ .............................................................................................. 26
8.3 Selection of Installation Location...................................................................................... 26
8.4 Electric Connection Requirement..................................................................................... 26
8.5 Installation of Indoor Unit.................................................................................................. 26
8.6 Installation of Outdoor Unit............................................................................................... 29
9DFXXP3XPSLQJDQG/HDN'HWHFWLRQ ............................................................................. 30
&KHFNDIWHU,QVWDOODWLRQDQG7HVW2SHUDWLRQ ..................................................................... 30

Service Manual
Table of contents
9. Maintenance.................................................................................................................31
9.1 Error Code...........................................................................................................................31
3URFHGXUHRI7URXEOHVKRRWLQJ .............................................................................................32
0DLQWHQDQFH0HWKRGIRU1RUPDO0DOIXQFWLRQ......................................................................37
10. Exploded View and Parts’ List..................................................................39
10.1 Indoor Unit.........................................................................................................................39
10.2 Outdoor Unit ......................................................................................................................43
11. Removal Procedure............................................................................................47
11.1 Removal Procedure of Indoor Unit ....................................................................................47
11.2 Removal Procedure of Outdoor Unit .................................................................................57
Appendix:.............................................................................................................................66
$SSHQGL[5HIHUHQFH6KHHWRI&HOVLXVDQG)DKUHQKHLW .........................................................66
$SSHQGL[&RQ¿JXUDWLRQRI&RQQHFWLRQ3LSH.......................................................................... 66
Appendix 3: Pipe Expanding MHWKRG ........................................................................................67
Appendix 4: List of Resistance for Ambient Temperature Sensor .............................................68

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Service Manual
1. Summary
Part Ė: Technical Information
Indoor Unit:
GWH18MC-K3NNA2K/I
GWH24MD-K3NNA2K/I
GWH18MC-K3NNA2K/O
GWH24MD-K3NNA2K/O
Remote Controller:
YB1FA(XFAN)
Outdoor Unit:

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Service Manual
6SHFL¿FDWLRQV
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Model GWH18MC-K3NNA2K GWH24MD-K3NNA2K
Product Code CA181012100 CA181012000
Power
Supply
Rated Voltage V~ 220-240 220-240
Rated Frequency Hz 50 50
3KDVHV 11
Power Supply Mode Indoor Indoor
Cooling Capacity W 5259 6448
Heating Capacity W 5627 7050
Cooling Power Input W 1698 2120
Heating Power Input W 1631 2180
Cooling Power Current A 7.88 9.8
Heating Power Current A 7.56 10.1
Rated Input W 2150 3200
Rated Current A 11.09 15
Air Flow Volume(SH/H/M/L/SL) m3K 850/820/790/730/- 1000/800/700/600/-
'HKXPLGLI\LQJ9ROXPH /K 1.8 2.0
EER W/W 3.02 3.04
COP W/W 3.45 3.23
SEER W/W / /
HSPF W/W / /
Application Area m223-34 27-42
Indoor Unit
Model of indoor unit GWH18MC-K3NNA2K/I GWH24MD-K3NNA2K/I
Indoor Unit Product Code CA181N12100 CA181N12000
Fan Type &URVVÀRZ &URVVÀRZ
'LDPHWHU/HQJWK';/ mm ĭ; ĭ;
Fan Motor Cooling Speed(SH/H/M/L/SL) r/min 1350/1200/1050/900/- 1350/1150/1000/850/-
Fan Motor Heating Speed(SH/H/M/L/SL) r/min 1420/1250/1150/1050/- 1350/1150/1000/900/-
Output of Fan Motor W 20 35
Fan Motor RLA A 0.15 0.32
Fan Motor Capacitor ȝ) 1.5 2.5
Input of Heater W / /
Evaporator Form Aluminum Fin-copper Tube Aluminum Fin-copper Tube
Pipe Diameter mm ĭ ĭ
5RZ¿Q*DS mm 2-1.4 2-1.5
&RLO/HQJWK/;';: mm 715X25.4X304.8 765X25.4X342.9
Swing Motor Model MP28VB MP35XX
Output of Swing Motor W 2.0 3
Fuse A 3.15 3.15
Sound Pressure Level (SH/H/M/L/SL) dB (A) 46/44/41/35/- 48/44/40/36/-
Sound Power Level (SH/H/M/L/SL) dB (A) 56/54/51/45/- 58/54/50/46/-
Dimension (WXHXD) mm 940X298X200 1007X315X219
Dimension of Carton Box (LXWXH) mm 1010X380X285 1073X395X313
'LPHQVLRQRI3DFNDJH/;:;+ mm 1013X383X300 1076X398X328
1HW:HLJKW NJ 13 15
*URVV:HLJKW NJ 16 18.5

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Service Manual
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Outdoor
Unit
Model of Outdoor Unit GWH18MC-K3NNA2K/O GWH24MD-K3NNA2K/O
Outdoor Unit Product Code CA181W12100 CA181W12000
&RPSUHVVRU0DQXIDFWXUHU7UDGHPDUN ZHUHAI LANDA COMPRESSOR
CO., LTD.
ZHUHAI LANDA COMPRESSOR
CO., LTD.
Compressor Model QXA-F20F050 QXA-F265N030
Compressor Oil RB 68EP RB68EP
Compressor Type Rotary Rotary
L.R.A. A 42.00 49.50
Compressor RLA A 7.70 10.60
Compressor Power Input W 1650 2220
Overload Protector UP3-A6 UP14RE5345-M
7KURWWOLQJ0HWKRG Capillary Capillary
Operation Temp ºC 16~30 16~30
Ambient Temp (Cooling) ºC 18~43 18~43
Ambient Temp (Heating) ºC -7~24 -7~24
Condenser Form Aluminum Fin-copper Tube Aluminum Fin-copper Tube
Pipe Diameter mm ĭ ĭ
5RZV¿Q*DS mm 1-1.4 2-1.4
&RLO/HQJWK/;';: mm 809X19X660 821X38.1X660
Fan Motor Speed rpm 780 690
Output of Fan Motor W 68 60
Fan Motor RLA A 0.75 0.58
Fan Motor Capacitor ȝ) 2.5 3.5
Air Flow Volume of Outdoor Unit m3K 2800 3200
Fan Type $[LDOÀRZ $[LDOÀRZ
Fan Diameter mm ĭ ĭ
'HIURVWLQJ0HWKRG Automatic Defrosting Automatic Defrosting
Climate Type T1 T1
Isolation I I
Moisture Protection IP24 IP24
Permissible Excessive Operating Pressure
IRUWKH'LVFKDUJH6LGH MPa 4.3 4.3
Permissible Excessive Operating Pressure
IRUWKH6XFWLRQ6LGH MPa 2.5 2.5
Sound Pressure Level (H/M/L) dB (A) 54/-/- 56/-/-
Sound Power Level (H/M/L) dB (A) 64/-/- 66/-/-
Dimension (WXHXD) mm 913X680X378 955X700X396
Dimension of Carton Box (LXWXH) mm 994X428X725 1026X455X735
'LPHQVLRQRI3DFNDJH/;:;+ mm 997X431X740 1029X458X750
1HW:HLJKW NJ 47 55
*URVV:HLJKW NJ 51 59.5
Refrigerant R410A R410A
5HIULJHUDQW&KDUJH NJ 1.2 1.65
Connection
Pipe
/HQJWK m5 5
*DV$GGLWLRQDO&KDUJH g/m 20 50
Outer Diameter Liquid Pipe mm ĭ ĭ
Outer Diameter Gas Pipe mm ĭ ĭ
0D['LVWDQFH+HLJKW m10 10
0D['LVWDQFH/HQJWK m25 25
1RWH7KHFRQQHFWLRQSLSHDSSOLHVPHWULFGLDPHWHU

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Service Manual
2.2 Capacity Curve in Different Outdoor Temperature
Rated cooling condition(ć)
(DB/WB) Model
Pressure of gas pipe
connecting indoor and
outdoor unit
Inlet and outlet pipe temperature
RIKHDWH[FKDQJHU Fan speed of
indoor unit
Fan speed of
outdoor unit
Indoor Outdoor P (MPa) T1 (°C) T2 (°C)
27/19 35/24 18K 0.8 to 1.0 9 to 12 85 to 37 6XSHU+LJK +LJK
27/19 35/24 24K 0.8 to 1.0 9 to 12 85 to 37 6XSHU+LJK +LJK
2.3 Operation Data
Cooling
Heating
5DWHGKHDWLQJFRQGLWLRQć)
(DB/WB) Model
Pressure of gas pipe
connecting indoor and
outdoor unit
Inlet and outlet pipe temperature
RIKHDWH[FKDQJHU Fan speed of
indoor unit
Fan speed of
outdoor unit
Indoor Outdoor P (MPa) T1 (°C) T2 (°C)
20/15 7/6 18K 2.7 to 3.0 68 to 34 2 to 4 6XSHU+LJK +LJK
20/15 7/6 24K 2.7 to 3.0 70 to 37 6 to 8 6XSHU+LJK +LJK
Instruction:
T1: Inlet and outlet pipe temperature of evaporator
T2: .Inlet and outlet pipe temperature of condenser
33UHVVXUHDWWKHVLGHRIELJYDOYH
&RQQHFWLRQSLSHOHQJWKP
Cooling Heatling
Outdoor temp.( )
)%(oitaryticapaC
)%(oitaryticapaC
20
40
60
80
100
120
157-7 -5 0 2 24
0
-10 5 10
Outdoor Temp.(°C)
32 33 34 35 36 37 38 39 43
40 41 42
100
105
95
90
85
80
75
70
65
60
55
50
Conditions
Indoor:DB27°C/WB19°C
Indoor air flow:Super High
Pipe length:5m
Condition Heating
Indoor:DB20
°C / WB15°C
Indoor air flow: Super High
Pipe length:
5m

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Service Manual
3. Outline Dimension Diagram
3.1 Indoor Unit
193
53 694
98
31
Φ55X2
205
117 685
67
90
75 45
Φ70X2
Unit:mm
W
D
H
Models W H D
18K 940 298 200
24K 1007 315 219
18K
24K

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Service Manual
3.2 Outdoor Unit
Unit:mm
GWH18MC-K3NNA2K/O
549
847 378
300913
348
680
340955
700
396
890
860
364
GWH24MD-K3NNA2K/O

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Service Manual
4. Refrigerant System Diagram
Cooling and heating model
Indoor unit Outdoor unit
COOLING
HEATING
4-Way valve
Discharge
Suction
Heat
exchanger
(evaporator) Heat
exchanger
(condenser)
Valve
Valve
Liquid pipe
side
Gas pipe
side
Strainer
Accumlator
Compressor
Strainer
Capillary
Refrigerant pipe diameter
Liquid :1/4" (6 mm)
Gas : 1/2" (12 mm)(18K)
Gas : 5/8" (16 mm)(24K)