Mitsubishi Electric MXZ-2A20NA - 1, Service Manual

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MXZ-2A20NA MXZ-2A20NA -
1
MXZ-2A20NA -
2
MXZ-3A30NA MXZ-3A30NA -
1
MXZ-4A36NA
294-370 V DC
Output
3. Outdoor Power board
(Red)
(White)
Connect to the compressor
Voltage among phases:
5 V to 180 V
Connect to the earth
CN5
Primary current detection
(Connect to the noise filter)
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
(+)
(–)
Signal reception (From
electronic control P.C. board)
5 V DC pulse wave
)
CN3
Fin temperature thermistor RT64
(Red)
(White)
Connect to the compressor
Voltage among phases: 5 V to 180 V
Connect to the earth
CN5
Primary current detection
(Connect to the noise filter)
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
(+)
(–)
Signal reception (From
electronic control P.C. board)
5 V DC pulse wave
)
CN3
Fin temperature thermistor RT64
1
3
294-370 V DC
Output
1
3
200
180
160
140
120
100
80
60
40
20
0
Resistance (k
Ω
)
Temperature (°F)
32 50 68 86 104 122 140 158 176
Fin temperature thermistor (RT64)