Haier Thermocool HSU-12HQA03 Operation Manual page 13

Electrical Diagram
12k wiring diagram of split unit indoor
PFC REACTOR
W
to double-way air
exchange motor
B
R
Y/G
GND
to single-way
air exchange motor
B：BLACK
W：WHITE
R：RED
Y/G：YELLOW/GREEN
BL：BLUE OR：ORANGE
CN6
CN9 CN8
AC-N
CN7
Y/G
GND
B
W
CN1
CN2
CN3
CN4
AC-N
AC-L
CN9
CN8
CN10
1A/250VAC
CN13
CN15CN14
CN11
BL BL
AC FAN MOTOR
Electric
Heating Cable
4-WAY VALVE
Remark：the dotted parts are
optional for different unit.
MODULE BOARD
AC-L
R W B
CN11 CN10
W V U
BL
OR
CN26
CN22
CN24
CN23
MAIN CONTROL BOARD
CN19 CN18 CN17
CN20
CN16
ELECTRIC
EXPANSION VALVE
11
WARNING
CAUTION
DON'T TOUCH CAPACITOR, EVEN AFTER
PLUG-OFF ( DANGER OF ELECTRIC SHOCK)
The capacitor retains high
voltage even after the plug-off.
For your safety, be sure to wait
at least 5 minutes. after plug
off and use a tester to confirm
the voltage between connector P
and N(on module board) is less
than DC 10V before start
servicing.
Description
Outdoor EEPROM error
The protection of IPM
Overcurrent protection
of AC electricity
Communication fault
between the IPM and CBD
Over pressure or Overheat
protection for the compressor
Power voltage is too high or low
Overheat protection for
exhaust temperature
Frost-removing temperature
sensor failure
Ambient temperature sensor failure
Exhaust temperature sensor failure
Deviate from the normal
for the compressor
Loop of the station detect error
Overcurrent of the compressor
Overcurrent protection for
single-phase of the compressor
LED1 Flash
Times
1
2
3
4
5
6
8
10
12
13
18
19
24
25