Mitsubishi Electric MSZ-JP12WA-U Service Manual page 26

9-7. Test point diagram and voltage
MSZ-JP09WA MSZ-JP12WA
1. Indoor power P.C. board, Indoor terminal P.C. board
Indoor terminal P.C. board
Fuse (F11)(*)
Terminal
block
Connector to indoor electronic
control P.C. board (CN20A)
* Please replace the fuse after removing the indoor terminal P.C.
board from the electrical box.
2. Indoor electronic control P.C. board
Timer short mode point JPG JPS
(Refer to 7-1.)
Emergency operation
switch (SW1)
OBH820A
Indoor power P.C. board
Varistor (NR11)
5 V DC
Room tempera-
ture thermistor
RT11 (CN111)
Indoor coil ther-
mistor RT12,
RT13 (CN112)
Connector to
Indoor power P.C.
board (CN10A)
5 V DC
To disable "Auto restart function",
solder the Jumper wire to JR07.
(Refer to 7-3.)
Resistor (R111)
approximately 2 Ω
GND
GND
Vane motor
(CN151)
12 V DC
26
Indoor fan motor
(CN211)
(+)0-6 V
(+)3-6 V DC
15 V DC
(–) GND (high-
voltage DC)
162 V DC
12 V DC
Room temperature thermistor (RT11)
Indoor coil thermistor (RT12, RT13)
32 50 68 86 104 122 140
Temperature (°F)