Mitsubishi Electric PKH18FK Technical & Service Manual page 24

MODELS PUH24/30/36EK WIRING DIAGRAM
C COMPRESSOR CAPACITOR
C1,2 FAN CAPACITOR
C5 COMPRESSOR START CAPACITOR
F<O.B> FUSE<6A>
FC<O.B> FAN CONTROLLER
HC CRANKCASE HEATER
LD1~LD8 LED<CHECK,SERVICE>
MC COMPRESSOR<INNER THERMOSTAT>
MF1,2 FAN MOTOR<INNER THERMOSTAT>
1
YLW
FROM INDOOR UNIT
2
ORN
CONNECTING WIRES
3
BRN
12V DC (poler)
TB3
BRN 12.3V AC
RED 12.3V AC
TB1
L1
POWER SUPPLY
L2
1[ 208/230V
GR
60Hz
NOTES : Symbols used in wiring diagram above are. / :Terminal block, ¤¤¤ :Connector, ¤ :PC board insertion tab.
CAUTION FOR SERVICING
The connector marked
The compressor stops by disconnecting the white connector as shown at the right.
CAUTION FOR POWER SUPPLY WIRING
Since LD8 lights when normal power is turned "ON", check the power supply with the "ON"
or "OFF" LD8.
w Since the indoor transformer (T) is connected with 230V power, if 208V power is used,
change the wiring connection as shown in the right figure.
CAUTION FOR INDOOR AND OUTDOOR CONNECTING WIRES
Since the indoor and outdoor connecting wires has polarity, make sure to connect the same terminal numbers (1,2,3) for indoor
and outdoor units.
24
O.B
R
RT
SW1•2•3<O.B>
T
TB1,3
X11<O.B>
X12<O.B>
LED
RT
O.B
SW1
X14 X13
CN2
SW2
SW3
OFF
ON
X14
2 1
3
2
CN3
1
CN4T
4
4 3 2 1
SV TRF
21R
RED
208V
WHT
ORN
WHT
230V
T
RED
BLK
52C
R
RED
BLK
T
GRN
s
—¤— is to turn the compressor ON-OFF during servicing.
OUTDOOR CONTROLLER BOARD
RESISTOR
OUTDOOR COIL THERMISTOR
<32˚F/15kΩ, 77˚F/5.4kΩ>
SELECTOR<CHECK,SERVICE>
TRANSFORMER
TERMINAL BLOCK
CRANKCASE HEATER RELAY
COMPRESSOR RELAY
4 3 2 1
X12 X11 CN4
X13 X12 X11
F
21S4 52C CH ZNR
R/1
S
A
21
HC
52C
S4
B
U BLU
R
WHT WHT
C
MC
W
BLU RED
S
C
X13<O.B> R.V RELAY
X14<O.B> BYPASS VALVE RELAY
ZNR<O.B> VARISTOR
19 COMPRESSOR START RELAY
21R BYPASS VALVE COIL
21S4 R.V COIL
52C CONTACTOR
63H1 CONTROL HIGH PRESSURE SWITCH
63H2 PROTECT HIGH PRESSURE SWITCH
FC
5
63H1
S/2 T/3
BLU BLU
63H2
63H1
White connector
w
When Power Supply is 208V
RED
208V
ORANGE 230V
26C
MF2
63H2
MF1
51CM
WHT
BLU
BLU BLU
4
WHT WHT
3
MF1 RED
RED
2
C1
1
ORN ORN
YLW YLW
1
C1
2
MF2
BRN BRN
3
WHT WHT
4
BLU BLU
WHITE