Mitsubishi Electric MXZ-2HA40VF-E1 Service Manual page 65

3. Outdoor power P.C. board
MXZ-3HA50VF
Output to drive compressor
Connect to reactor
(Red line)
4. Outdoor display P.C. board
MXZ-2HA40VF MXZ-2HA50VF
OBH828B
Connect to reactor
(White line)
To inverter P.C. board (CN936)
5V GND
LED1 LED2 SW1
(+)
CN151 Signal transmission
(To Outdoor control P.C. board)
15 V
5 V DC pulse wave
(-)
(-)
15 V
CN171
Fin temperature thermistor
(RT64)
CNDC
Connect to earth
Bus-bar voltage
290 - 370 V DC
SW2
65
(-)
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 kΩ ± 2%
B constant = 4150 ± 3%
1
Rt = 17exp{4150(
273+t
(°C)
1
)}
323