Test Point Diagram And Voltage; Indoor Electronic Control P.c. Board; Receiver P.c. Board; Display P.c. Board - Mitsubishi Electric MLZ-KP25VF Service Manual

11-7. TEST POINT DIAGRAM AND VOLTAGE

MLZ-KP25VF
MLZ-KP35VF
MLZ-KP50VF

Indoor electronic control P.C. board

CN105
Connector to optional
interface
5 V DC
CN211
Indoor fan motor
325 V DC
(-) GND
(High voltage DC)
15 V DC
(+) 3 - 6 V DC
(+) 0 or 15 V DC
12 V DC
CN151 Vane motor connector

Receiver P.C. board

CN301
Indoor electronic control P.C.
board connector

Display P.C. board

SW301
Emergency operation switch
OBH801
CN1N1 CN145
Drain pump Float sensor
R111
CN125
Display P.C. board/
Receiver P.C. board
connector
To disable "Auto restart
function", cut the
Jumper wire to JR77.
(Refer to 9-3.)
CN302
Indoor electronic control P.C.
board connector
Factory setting
(Do not change the setting.)
SW101
CN202
Serial signal
Timer short
GND
mode point
(2 points)
(Refer to 9-1.)
Indoor coil thermistor [RT12,RT14,RT15 (MAIN), RT13 (SUB)]
Room temperature thermistor (RT11)
Temperature (ºC)
37
ON
NR11
1 2 3 4 5 6 Varistor
OFF
F11 FUSE
T3.15AL250V
CN201
Power supply
input 230 V AC
CN1M1
Display P.C.
board connector
CN111
Room temperature
thermistor RT11
CN112
Indoor coil ther-
mistor RT14
(MAIN 2)
[MLZ-KP50VF]
Indoor coil ther-
mistor RT13
(SUB)
Indoor coil ther-
mistor RT12
(MAIN 1)
CN113
Indoor coil ther-
mistor RT15
(MAIN 3)
[MLZ-KP50VF]
Modifi ca-
JR05
tion
}
point for
individual
JR06
operation
(Refer to
9-2.)
Dip switch SW3
(Increase air flow
volume)
SWV1
Changing air-
flow direction
(Refer to 9-5.)