Power Board - Mitsubishi Electric MXZ-2B20NA Service Manual

4. Power board

MXZ-2B20NA
294-370 V DC
Output
(Red)
(+)
1
3
(–)
(White)
OBH560G
DM00N019 or DM00N095
79
Fin temperature thermistor (RT64)
200
180
160
140
120
100
80
60
40
20
0
32 50 68 86 104 122 140 158 176
Temperature (°F)
Connect to the compressor
Voltage among phases: 5 V to 180 V
Connect to the earth
CN2
Connect to the controller board
(+)1-5(–): Signal transmission
(To electronic control P.C. board)
5 V DC pulse wave
(+)2-5(–): Zero cross signal
3-4 : Not used
(+)6-5(–): 15 V
(+)7-5(–): 15 V
CN3
Fin temperature thermistor RT64
) Signal reception (From
electronic control P.C. board)
5 V DC pulse wave
CN5
Primary current detection
(Connect to the noise filter)