Mitsubishi Electric MUZ-JP WA Series 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)
OBH820
Indoor power P.C. board
Varistor (NR11)
5 V DC
5 V DC
To disable "Auto restart function",
solder the Jumper wire to JR07.
(Refer to 7-3.)
Resistor (R111)
GND
Room tempera-
ture thermistor
RT11 (CN111)
Indoor coil ther-
mistor RT12,
RT13 (CN112)
GND
Vane motor
(CN151)
Connector to
Indoor power P.C.
board (CN10A)
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)