Haier HBU-18HF03 Manual page 222

HDU-42HF03/H
CRANKCASE
HEATER
B
B
COM NO NC
3-PHASE DETECTOR
R S
R
TERMINAL
BLOCK
B:BLACK BL:BLUE BR:BROWN GR:GRAY
R:RED W:WHITEY/G:YELLOW/GREEN
Note: For the above models, there are no outdoor PCB
HBU-42CH03, HBU-42CI03, HBU-42HI03, HCFU-42CH03, HBU-42HK03, HDU-42CH03/H, HDU-42CI03/H
HDU-42HK03/H, HDU-50HT03/H, HPU-42CV03, HPU-42/48HV03, HPU-42CH03, HPU-42HI03
HIGH PRESSURE SWITCH
1
LOW PRESSURE SWITCH
OUTDOOR AMBIENT SENSOR
OUTDOOR PIPING SENSOR
COMPRESSOR VENT SENSOR
R BL
B
Y/G
Y/G:YELLOW/GREEN
R:RED W:WHITE
BL:BLUE B:BLACK
OUTDOOR CIRCUIT DIAGRAM
MAGNETIC
CONTACTOR
TERMINAL
B BLOCK
T
Y/G
R S T N
TERMINAL
BLOCK
POWER SUPPLY
NOTE:THE L N ON TERMINAL BLOCK IS EQUAL TO 1 2.
PARTS IN DASHED FRAMES ARE NOT AVAILABLE FOR SOME TYPES.
CIRCUIT DIAGRAM OF OUTDOOR UNIT
TRANSFORMER
CN1
CN2
CN10
CN3
CN12
CN11
S
L3
W
L2
FUSE
R
L1
N T3.15A/250VAC
Y/G
N 1 2 3
R S T
POWER SUPPLY TO INDOOR UNIT
Wiring diagram and PCB photo
4-WAY VALVE
RELAY
8
2 4 6
1 3 5 7
U(R)
M
V(S)
GR GR
R
W(T)
COMP.
Y/G
GR
B
W BL
B
Y/G
GR Y/G
W B R BR
L N 3 4 5
CONEECT TO INDOOR UNIT
FAN
MOTOR
CT
CN9
4-WAY VALVE
CN5
SOLENOID
MAGNETIC CONTACTOR
CN7
R
W
BL
CN4
B
NOTES:
1• • D ASHED PARTS ARE NOT AVAILABLE IN SOME TYPES.
2• • D ASHED PART IS COMPRESSOR VENT PROTECTOR IN SOME TYPES.
1
3• • T HE MARK R-S-T IS EQUAL TO U-V-W,T1-T2-T3• •
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0010577900
FAN MOTOR
M
CAPACITOR
B Y/G
FAN MOTOR
Ｍ
CAPACITOR
Y/G
B
BR
LOW DEFROST
PRESSURE TEMP.
SWITCH
SENSOR
COMP.
VENT
SENSOR
B
W
CONEECT TO INDOOR UNIT
0150500676
Y/G
CAP.
Y/G
CAP.
FAN MOTOR
COMPRESSOR
R
R
M
W
S
BL
Y/G
T
B
CRANKCASE
HEATER