Test Point Diagram And Voltage - Mitsubishi Electric MLZ-KP09NA Service Manual

9-7. TEST POINT DIAGRAM AND VOLTAGE

MLZ-KP09NA MLZ-KP12NA MLZ-KP18NA
Indoor electronic control P.C. board
CN105
Connector to optional
interface
5 V DC
CN211
Indoor fan motor
294/325 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
OBH802A
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 8-3.)
CN302
Indoor electronic control P.C.
board connector
sandium.com
Factory setting
(Do not change the setting.)
SW101
CN202
Serial signal
Timer short
GND
mode point
(2 points)
(Refer to 8-1.)
Indoor coil thermistor [RT12,RT14,RT15 (MAIN), RT13 (SUB)]
Room temperature thermistor (RT11)
Temperature (ºC)
34
NR11
ON
Varistor
1 2 3 4 5 6
OFF
F11 FUSE
T3.15AL250V
CN201
Power supply
input 208/230 V AC
CN1M1
Display P.C.
board connector
CN111
Room temperature
thermistor RT11
CN112
Indoor coil ther-
mistor RT14
(MAIN 2)
[MLZ-KP18NA]
Indoor coil ther-
mistor RT13
(SUB)
Indoor coil ther-
mistor RT12
(MAIN 1)
CN113
Indoor coil ther-
mistor RT15
(MAIN 3)
[MLZ-KP18NA]
Modifica-
JR05
tion
}
point for
JR06
individual
operation
(Refer to
8-2.)
Dip switch SW3
(Increase air flow
volume)
SWV1
Changing air-
flow direction
(Refer to 8-5.)