Mitsubishi Electric PL18FK2 Service And Parts Manual page 57

MODELS: P U 2 4 / 3 0 / 3 6 E K , P U 4 2 E K 2 , P U L 2 4 E K WIRING DIAGRAM
C COMPRESSOR CAPACiTOR
C3.4 FAN CAPACiTOR
CH CRANKCASE HEATER
CN3 t 0 . B ) CONNECTOR (CONNECTING WIRES
INDOOR/OUTDOOR)
CN6T t 0 . B ) CONNECTOR (TRANSFORMER)
FC t 0 . B ) FAN CONTROLLER
F3 ( 0 . 6 ) FUSE t6A)
LD1 -LD8 LED (CHECK, SERVICE)
MC COMPRESSOR (INNER THRMOSTAT)
MF3.4 OUTDOOR FAN M O T O R (INNER MRMOSTAT)
0 . B OUTDOOR CONTROLLER BOARD
SW1.2.3tO.B)SELECT SWITCH (CHECK, SERVICE>
T TRANSFORMER
TB 1 TERMINAL BLOCK<POWER SUPPLY)
TB3 TERMINAL BLOCK (CONNECTING
W{RES INDOOR/OUTDOOR)
OUTDOOR COIL THERMISTOR
CRANK CASE HEATER RELAY
COMPRESSOR RELAY
VARISTOR
CONTACTOR
HIGH PRESSURE SWITCH (PROTECT,
RESISTOR (PU42EK2)
COMPRESSOR START CAPACiTOR (PU42EK2)
COMPRESSOR START RELAY (PU42EK2)
, / :
: g " ,
;;
---
mmn
supplv
- -
~2
m 0 / 2 w
wnr
1pM.e Mnl
T
8LU RED
C
LED NO.
I
Output display (steady light) Check display (flashing)
LD1
I
Compressor indoor command
-
52C
Pipe temp, sensor short/open
63H2 functions
Outdoor fan ON
LD6
LD7 TH3 overheat protection
Defective input
NOTE
:
If the operatton stops to function of the protection device, the check display flashes.
j
How to use SW1 and 2
.Pressing erases the past check contents loaded on the micro-
.The output display (light) remains during operation but pressing
displays the past check contents in flashing mode. Pressing the switch
again returns to output display (I~ght)
1
CAUTION FOR SERVICING
I
I
Whlte connector
A
.The connector marked
- ? I +
is to turn the compressor ON-OFF dunng servicing.
4 D - L
The compressor stops by disconnecttng the white connector as shown at the nght.
'w?
*
When power Supply 1 s
208V
1
CAUTIONS FOR POWER SUPPLY WIRING
I
.Since LD8 hghts when normal power is turned "ON", check the power supply with the "ON" or "OFF
"
LDB.
WHKE
PnStnce the tndoor transformer (T) is connected with 230V power, ~f 208V power
IS
used, change the wiring
connection
In the followina Procedure.
[
CAUTIONS FOR INDOOR AND OUTDOOR CONNECTING WIRES
]
oS1nce the indoor and outdoor connecting wires has polarity, make sure to connect the same terminal numberr ( 1 . 2) for indoor and outdoor units