N
1
N
2
1
1
4
3
5
6
2
1
3 5
N
2
L
TERMINAL
BOARD
LED BLINKING
NO
1
2
3
4
LED indication pattern Mulfunction part or abnormal condition
LED turns on
Slow flashing ( 1 time for 2 seconds)
Example : NO.2 Compressor lock
on
off
1.0sec 1.0sec 1.0sec0.6sec 0.6sec 0.6sec
Quick flashing ( 3 times for 2 seconds)
TERMINAL
BOARD
OUTDOOR UNIT
TERMINAL BOARD
G(Y)
G(Y)
BR
BL
RE
WH
BK BL
OR
THERMISTOR
COMP. TEMP.
TH1
CN1
WH
BK
RE
BL
YE
BL
FC1
YE
U V W
U(R)
V(S)
W(C )
COMPRESSOR
POWER
TRANSISTOR
MODULE (PM1)
TH2
RE
CONTROL BOARD UNIT
T1
T4
The voltage is high at C8, C9 (electronic capacitors) on outdoor unit.
For mentenance discharge at C8, C9 to prevent electric shock.
In case that WPE2 (protecter) has been fused, the voltage is kept high at C8, C9.
YE : YELLOW
GN : GREEN
BK : BLACK
BL : BLUE
BR : BROWN
GR : GRAY
RE : RED
WH : WHITE
OR : ORANGE
G(Y) : GREEN YELLOW
CAUTION
T5 BR
OR
RE
RE
BL
WH
RE
WH
C6
BK
C7A
C7B
C8 C9
C24
150µF
400V
150µF
400V
2000µF 400V 2000µF 400V
50µF
200V
4700µF
63V
L1
L2
4
1 2 3
MRY1
YE
YE
GR
BR
YE
T9
T7
T8
T10
20A
250V
DB1
DB2
DIODE BRIDGE DIODE BRIDGE
GR
BL
PTC1
REACTOR
REACTOR
GR
BL BL
GR
BL
T2
C11
C2
C3
C1
C5
CT1
NR2
RY2
CN3
CN8
C4
L3 L4
SA1 NR1
T11
T3
WPE1
WPE2
WPE3 3A 250V
20A
250V
FAN
MOTOR
FAN
MOTOR
CAPACITOR
2µF 430V
THERMISTOR
PIPE TEMP.
UNIT TO UNIT CORD
SINGLE PHASE
220-240V 50/60Hz
LED INDICATION OF SELF-DIAGNOSIS
ON OUTDOOR UNIT
FAN
MOTOR
CONTROL BOARD
UNIT
INDOOR UNIT
GN TH3
THERMISTOR
AIR TEMP.
Normal
Abnormal signal line
Compressor lock
Overheat of the compressor
Power module (PM1) abnormality
NO
6
5
7
8
LED indication pattern Mulfunction part or abnormal condition
Short circuit of the thermistor
Open circuit of the thermistor
AC abnormal current
AC overcurrent
9 4 WAY VALVE error
NO.3 Overheat of the compressor
1.0sec 1.0sec0.6sec 0.6sec 0.6sec0.6sec
2 1
RE
CNR2CNR1
T15
FAN
MOTOR
4 WAY
VALVE
COIL
RY1
Figure W-5. Wiring Diagram for AE-X138E
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