17
11-4. TEST POINT DIAGRAM AND VOLTAGE
MUH-GD80VB
Outdoor deicer P.C. board
Varistor
(NR62)
Fuse
T3.15AL250V
Defrost
interval
time short
pin(JPG1,
R871)
(Refer to
10-1.)
}
12 V DC
Jumper wire for
change in defrost
setting (JRF, JRG)
(Refer to 10-2.)
}
5 V
DC
+
+
CN661 -
Defrost ther-
mistor (RT61)
(Refer to
11-3. )
Temperature (°C)
Discharge temperature thermistor (RT62)
Resistance (k
Ω
)
0 10 20 30 40 50 60 70 80 90 100 110 120
0
100
200
300
400
500
600
700
800
900
Defrost thermistor (RT61)
Ambient temperature thermistor (RT63)
-20 -10
0
10 20 30 40
0
10
20
30
40
50
60
70
80
90
100
Temperature (°C)
Resistance (k
Ω
)
CN662 -
Discharge tem-
perature thermistor
(RT62)
(Refer to 11-3. )
CN662 -
Ambient temperature
thermistor (RT63)
(Refer to 11-3. )
LEV
connector
(CN724)
Fan motor
connector
(CN711)
Varistor
(NR61)
CN730 -
230 V AC
}
(Refer to
11-3. or
11-3. .)
}
R601 10 V DC
(Refer to 11-3. .)
(Refer to
11-3. or
11-3. .)
J101
J401
+
}
R.V. coil
(CN721)
