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100
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32 50 68 86 104 122 140 158 176
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Resistance (kΩ)
Resistance (kΩ)
Temperature (°F)
Temperature (°F)
Defrost thermistor (RT61)
Ambient temperature thermistor (RT65)
Outdoor heat exchanger temperature thermistor (RT68)
Fin temperature thermistor (RT64)
1. Outdoor electronic control P.C. board
MUZ-D30NA MUZ-D36NA MUY-D30NA MUY-D36NA
LED 1
LED 2
CN801
294 ~ 370
VDC
Input
(
(
CN932
20-90 VAC
GND
5 V
5 VDC
pulse wave
(
To fan
motor
Defrost thermistor (RT61)
(MUZ) CN661
Discharge temperature thermistor (RT62)
CN661
Outdoor heat exchanger temperature
thermistor (RT68) CN661
(
(
(+)
(–)
(+)
Rush current relay
(–)
R.V. coil (–)
(
12 V
DC
15 V
15 V
CN931
(+)
(–)
(
CN701
Signal transmission
(To power board)
5 VDC pulse wave
(+)
(–)
(
GND
CN702
Signal reception
(From power board)
5 VDC pulse wave
GND (power board)
CN781
CN795
12 VDC
pulse wave
LEV
(
(
(
(
32 50 68 86 104 122 140 176 194 122 212 230 248
700
600
500
400
300
200
100
0
Resistance (kΩ)
Temperature (°F)
Discharge temperature thermistor (RT62)
F801
FUSE
3.15 A / 250 V
(
Ambient temperature
thermistor (RT65)
CN663
for indoor
5~10 VDC
CN601
208/230 VAC
60 Hz
Input
(
(
10-6. TEST POINT DIAGRAM AND VOLTAGE
(
CN681
High pressure switch