Domestic air conditioner
 Wiring diagrams
 Outdoor Unit
HSU-18HVA103 /R2(DB)  
T25A/250VAC 
CN13
CN10
CN11
0010515305
REACTOR
COMPRESSOR
CAP BOARD
F
U
S
E
1
OUTDOOR PCB
OUTDOOR UNIT WIRING DIAGRAM 
DEFROST TEMP.SENSOR
AMBIENT TEMP.SENSOR
COMP.TEMP.SENSOR
  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 is less than DC 10V before 
start servicing.
WARNING
CAUTION
/GREEN
Y/G:YELLOW
W: WHITE
OR:ORANGE
BL:BLUE
B: BLACK
R: RED
AC FAN MOTOR
TO INDOOR  UNIT
TERMINAL 
BLOCK
4-WAY VALVE
(CN3)
(CN4)
AC-N
AC-L
NOTES:
THE PARTS OF DOTTED ARE OPTIONAL
W
CN4
CN5
CN3
CN12
SUCTION.TEMP.SENSOR
CN14
CN8
CN7
CN16
ELECTRIC 
EXPANSION VALVE
LI
LO
W
(CN1)
(CN2)
CN11
CN10
MODULE BOARD
DC FAN MOTOR
Single-way air exchange 
MOTOR
Double-way air exchange 
MOTOR
HSU-22HVA103 /R2(DB)  
T25A/250VAC 
0010562188
OUTDOOR UNIT WIRING DIAGRAM 
  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 is less than DC 10V before 
start servicing.
WARNING
CAUTION
/GREEN
Y/G:YELLOW
W: WHITE
OR:ORANGE
BL:BLUE
B: BLACK
R: RED
TERMINAL BLOCK
Double-way air exchange 
MOTOR
POWER SUPPLY
TO INDOOR
REACTOR
COMPRESSOR
CAP BOARD
OUTDOOR PCB
(CN3)
(CN4)
AC-N
AC-L
NOTES:
THE PARTS OF DOTTED ARE OPTIONAL
W
P512
LI
LO
W
(CN1)
(CN2)
DEFROST TEMP.SENSOR
COMP.TEMP.SENSOR
AMBIENT TEMP.SENSOR
SUCTION.TEMP.SENSOR
EXPANSION VALVE
ELECTRIC 
4-WAY VALVE
F
U
S
E
MODULE BOARD
CN10
CN11
F
L
I
T
E
R
R
Single-way air exchange 
MOTOR
DC FAN MOTOR
AC FAN MOTOR
 
136
HSU-18,22HVA103/R2(DB)     Appendix