Mitsubishi Electric MFZ-KJ25VE Service Manual page 30

10-7. TEST POINT DIAGRAM AND VOLTAGE
MFZ-KJ25VE MFZ-KJ35VE MFZ-KJ50VE
Indoor electronic control P.C. board
Varistor
(NR11)
Power supply (CN201)
input 230 VAC
Resistor
(R111)
Indoor fan motor
(CN211)
(+)0 or 15 VDC
(+)3-6 VDC
15 VDC
(–) GND (high-
voltage DC)
325 VDC
5 VDC
Timer short mode
point (2 points)
(Refer to 8-1.)
GND
Room temperature
thermistor RT11
(CN111)
Indoor coil thermistor (CN112)
Indoor coil thermistor RT15 (MAIN 3)
Indoor coil thermistor RT14 (MAIN 2)
Indoor coil thermistor RT12 (MAIN 1)
Indoor coil thermistor RT13 (SUB)
Display receiver P.C. board
Emergency operation
switch (E. O. SW) (SW301)
Connect to indoor elec-
tronic control P.C. board
(CN301)
OBH666A
FUSE (F11)
T3.15AL250V
Vane motor (CN151)
Horizontal
vane back -
Horizontal
vane front -
Multi-fl ow vane -
Connector cable
(CN104)
30
Indoor coil thermistor [RT12,RT14,RT15 (MAIN), RT13 (SUB)]
Room temperature thermistor (RT11)
Temperature (°C)
Serial signal
input (CN202)
JR05
) Modification
JR06
point for
individual
operation
(Refer to 8-2.)
To disable "Auto
restart function",
cut the Jumper
wire to JR77.
(Refer to 8-3.)
12 VDC
Connect to display
receiver P.C. board
(CN1J1)
Interface (CN105)