Mitsubishi Electric MXZ-2D33VA Service Manual page 156

2. Outdoor control P.C. board
MXZ-3D54VA MXZ-3D54VA2 MXZ-3D68VA MXZ-4D72VA
Discharge temperature thermistor (RT62)
800
700
600
500
400
300
200
100
0
0 10 20 30 40 50 60 70 80 90 100 110 120
Temperature (°C)
LED 3
LED 2
LED 1
F711 FUSE
T3.15AL250V
CN711
230 VAC
SW871
SW2
CN712
R.V .coil
F801
FUSE
T3.15AL250V
CN801
Bus-bar
voltage
325 - 370
VDC Input
V (Rotate
SP
instruction)
(Voltage
between pins of
C930): 0 V DC
(when stopped),
1.8 - 6.5 V DC
F930
FUSE
T3.15AL250V
CN931
To Fan motor
OBH626K
Defrost thermistor (RT61)
Ambient temperature thermistor (RT65)
Outdoor heat exchanger temperature thermistor (RT68)
156
100
90
80
70
60
50
40
30
20
10
0
-20 -10 0 10 20 30 40
Temperature (°C)
CN631
(MXZ-4D72VA)
Serial signal Room D
12 - 24 VDC
CN621
Serial signal Room C
12 - 24 VDC
CN611
Serial signal Room B
12 - 24 VDC
CN601
230 VAC
Input
Serial signal Room A
12 - 24 VDC