Haier HBU-18HF03 Manual page 210

HDU-42CH03/H
HDU-42CI03/H, HDU-42HK03/H
CIRCUIT DIAGRAM OF INDOOR UNIT
ONE CUT-OFF PROTECTOR
HEATER
RESUMBLE PROTECTOR
CN8
W
CN3
B BL
BL
RELAY
B
B
BL
W
BL R W
NOTE
M FAN MOTOR
THIS UNIT CAN REALIZE THE
SELECTION OF HIGH/MIDDLE/LOW
Y/G
ESP BY CONNECT THE BLUE/RED/WHITE INDOOR MOTOR
CAP.
PORT IN THE DASHED FRAME.
NOTE:
W: WHITE B BLACK
1 THE DETECTOR IS OPTIONAL,WHICH IS USED TO REALIZE REMOTE CONTROL FUNCTION.
R RED BL BLUE
2 DASHED PARTS ARE SELECTED ACCORDING TO THE DIFFERENT MODELS.
Y/G:YELLOW/GREEN
3 THE DIP-SWITCH HAS BEEN SETTED WHEN OUT OF FACTORY, PLEASE DO NOT CHANGE.
TRANS.:TRANSFORMER
4 CN11 IS SHORT CONNECTED IF THE UNIT IS WITHOUT FLOAT SWITCH.
CIRCUIT DIAGRAM OF INDOOR UNIT
ONE CUT-OFF PROTECTOR
HEATER
RESUMBLE PROTECTOR
CN8
W
CN3
B R BL
BL
R
RELAY
B
FAN MOTOR
SPEED CONTROLLER
B R BL
W
FAN MOTOR
Y/G
CAPACITOR
NOTE:
1 THE DETECTOR IS OPTIONAL, WHICH IS USED TO REALIZE REMOTE CONTROL FUNCTION.
W: WHITE B BLACK
2 DASHED PARTS ARE SELECTED ACCORDING TO THE DIFFERENT MODELS.
R RED BL BLUE
3 THE DIP-SWITCH HAS BEEN SETTED WHEN OUT OF FACTORY, PLEASE DO NOT CHANGE.
Y/G:YELLOW/GREEN
4 CN11 IS SHORT CONNECTED IF THE UNIT IS WITHOUT FLOAT SWITCH.
Wiring diagram and PCB photo
0150500674
FLOAT
WIRED
PIPING TEMP.
SWITCH
CONTROLLER SENSOR
CN19 CN11 CN1
DIP-SWITCH
CN20CN21
CN2
BM
1234 DETECTOR
T6.3A/250VAC
CN14CN15 CN24
L
N
FUSE
CN9
TRANS.
R
W B
Y/G
W B R Y/G
B
1 2 3
TO OUTDOOR UNIT
0150500771
FLOAT
WIRED
SWITCH
PIPING TEMP.
CONTROLLER
SENSOR
CN19 CN11 CN1
DIP-SWITCH
CN20CN21
CN2
BM
DETECTOR
1234
T6.3A/250VAC
CN14CN15 CN24
L N
FUSE
CN9
R
W B
TRANSFORMER
Y/G
W B R Y/G
1 2 3
TO OUTDOOR UNIT
-210-