Outdoor Power P.c. Board; Outdoor Display P.c. Board; Fin Temperature Thermistor (Rt64) - Mitsubishi Electric MXZ-2F33VF-E1 Service Manual

3. Outdoor power P.C. board

MXZ-3F54VF MXZ-3F68VF MXZ-4F72VF
Output to drive compressor
Connect to reactor
(Red line)

4. Outdoor display P.C. board

MXZ-2F33VF MXZ-2F42VF
OBH790
Connect to reactor
(White line)
MXZ-2F53VF
To inverter P.C. board (CN936)
5V GND
LED1 LED2 SW1
CN171
Fin temperature thermistor
(RT64)
CNDC
Connect to earth
Bus-bar voltage
290 - 370 V DC
MXZ-2F53VFH
SW2
85
(-)
CN152
Signal Transmission
(+)
(From Outdoor
Control P.C. board)
5 V DC pulse wave
Connect to earth
CNAC2
220-230-240 V AC
Output
F1 FUSE
T6.3AL250V
220-230-240 V AC
Input
F2 FUSE
T6.3AL250V
CNAC1
220-230-240 V AC
Output

Fin temperature thermistor (RT64)

200
180
160
140
120
100
80
60
40
20
0
0 10 20 30 40 50 60 70 80
Temperature
Thermistor R50 = 17 k ± 2%
B constant = 4150 ± 3%
1
273+t
1
323