Mitsubishi Electric PL18FK2 Service And Parts Manual page 55

M 0 D E L S : P U 1 8 E K , PUL 1 8 E K WIRING DIAGRAM
C COMPRESSOR CAPACITOR LD1 -LDB LED (CHECK. SERVICE) TH3 OUTDOOR COIL THERMISTOR
C3 FAN CAPACITOR
MC COMPRESSOR
X I 1 <O. B) CRANKCASE HEATER RELAY
CH CRANKCASE HEATER M F3 O U T D O O R FAN M O T O R (INNER THRMOSTAT) X I
2
( 0 . B) COMPRESSOR RELAY
CN3 t 0 . B )
CONNECTOR (CONNECTING WIRES 0 . 6
OUTDOOR CONTROLLER BOARD ZN R VARISTOR
INDOOR/OUTDOOR) SWl.2.3(0.B)SELECT SWITCH (CHECK. SERVICE) 52C CONTACTOR
CNGT t 0 . B ) CONNECTOR (TRANSFORMER) T TRANSFORMER 63H2 HIGH PRESSURE SWITCH (PROTECT)
FC ( 0 . 6 ) FAN CONTROLLER TB 1 TERMINAL BLOCK<POWER, SUPPLY)
F3 t 0 . B ) FUSE t6A) TB3 TERMINAL BLOCK (CONNECTING
WIRES INDOOR/OUTDOOR)
51C OVERCURRENT RELAY
RED
POWER SUPPLY WHT 1 1 0 & ~ 5 f - D
Iphare
60H1
5 O
BLU
RED
C
Main functions of LED
(when b o t h Nos.
1
and
2
o f are
"OFF'')
I
LED NO
1
O u t ~ u t d~splav (steady bqht)
1
Check dlsplav (flashmg)
I
1
Compressor ON
1
63H2 functhons
Outdoor fan ON
LD1
LD2
1
I
n3
NOTE : If the operathon stops to functhon of the protecthon devlce, the check dhsplay Rashes
Compressor lndoor command
-
-
LD6
LD7
LD8
How to use S W l and 2
Pressmg erases the past check contents loaded on the
micro-
computer.
.The output daplay (hght) remalns dunng operat!on but presslng
[w
d~splays the past check contents In flash~ng mode. Press~ng the switch
-
-
P~ne temn sensor shodooen
aaam returns to output d~splav (I~ght)
-
-
Crankcase heater ON
I
CAUTION FOR SERVICING
I
-
TH3 overheat
protection
Defectwe lnput
*
Wh~te connector
A
.The connector marked
3 1
+
1 s to turn the compressor ON-OFF durmg servlclng
The compressor stops by dlsconnectmg the w h ~ t e connector as shown at the right
-
-
*I
When power Supply
IS
208V
W C A
FOR POWER SUPPLY WIRING
I
OS~nce LD8 l~ghts when normal power
IS
turned ON
,
check the power supply w ~ t h the 'ON' or "OFF
'
LD8
%S~nce the Indoor transformer (T) 1 s connected w ~ t h 230V power, ~f 208V power
IS
used, change the whnng
connection
In the follow~na Procedure
1
CAUTIONS FOR INDOOR AND OUTDOOR CONNECTING WIRES
/
~ S m c e the Indoor and outdoor
connecting
wlres has polarity, make sure to connect the same termma1 numbers (1, 2 ) for indoor and outdoor unlts