38
Indoor coil thermistor [RT12,RT14,RT15 (MAIN), RT13 (SUB)]
Room temperature thermistor (RT11)
Temperature (°C)
Resistance (k
Ω
)
MFZ-KA25VA MFZ-KA35VA MFZ-KA50VA
Indoor electronic control P.C. board
To disable "Auto restart function",
solder the Jumper wire to JR07.
(Refer to 9-3.)
10-7. TEST POINT DIAGRAM AND VOLTAGE
Indoor fan motor (Lower) CN212
GND DC
12 V DC
FUSE (F11)
T3.15AL250V Power supply
input 230 V AC
5 V DC
Room temperature
thermistor RT11
Varistor
NR11
Indoor coil thermistor RT14 (MAIN 2)
Indoor coil thermistor RT13 (SUB)
Indoor coil thermistor RT12 (MAIN 1)
Indoor coil thermistor RT15 (MAIN 3)
}
Timer short mode point
JPG, JPS (Refer to 9-1.)
Display receiver P.C. board
1FAN/2FAN
change switch
Emergency
operation
switch
Horizontal vane motor CN151
Damper lock motor Right CN151
Damper motor CN152
Damper lock motor Left CN152
Indoor fan motor (Upper) CN211
(+) 0/15 V
(+) 3-6 V DC
15 V DC
(-) GND (high voltage DC)
325 V DC
JR05 JR06
Modification point for
individual operation
(Refer to 9-2.)
}
(+) 0/15 V
(+) 3-6 V DC
15 V DC
(-) GND (high voltage DC)
325 V DC
OB409E
