Mitsubishi Electric MUH-GA50VB-E1 Service Manual page 34

Heat pump air conditioners
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MUH-GA60VB
MUH-GA80VB
Outdoor deicer P.C. board
Defrost thermistor (RT61)
Ambient temperature thermistor (RT63)
100
90
80
70
60
50
40
30
20
10
0
-20 -10
0
10 20 30 40
Temperature(:)
CN661 1-2
Defrost ther-
mistor (RT61)
(Refer to
10-4.F)
Defrost
interval
time short
pin(JPG1,
R871)
(Refer to
9-1.)
J101
+
5V
DC
J401
(Refer to
10-4.A or
10-4.D.)
Discharge temperature thermistor(RT62)
900
800
700
600
500
400
300
200
100
0
0 10 20 30 40 50 60 70 80 90 100 110 120
<MUH-GA80VB>
<MUH-GA80VB>
CN662 1-2
CN662 3-4
Discharge temper-
Ambient temperature
ature thermistor
thermistor (RT63)
(RT62)
(Refer to 10-4.F)
(Refer to 10-4.F)
Jumper wire for
change in defrost
setting (JRF, JRG)
(Refer to 9-2.)
Temperature(:)
<MUH-GA80VB>
LEV
connector
(CN724)
R601 10V DC
(Refer to 10-4.D.)
34
Fan motor
connector
Varistor
(NR62)
(CN711)
+
+
R.V. coil
}
(CN721)
}
12V DC
Fuse
3.15A / 250V
Varistor
(NR61)
CN7301-3
}
230V AC
(Refer to
10-4.A or
10-4.D.)

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