43
-20
-10
0
10
20
30
40
100
90
80
70
60
50
40
30
20
10
0
0
10 20 30 40 50 60 70 80
200
180
160
140
120
100
80
60
40
20
0
Resistance (k
Ω
)
Resistance (k
Ω
)
Temperature (°C)
Temperature (°C)
Defrost thermistor (RT61)
Ambient temperature thermistor (RT65)
Outdoor heat exchanger temperature thermistor (RT68)
Fin temperature thermistor (RT64)
0
10
20
30
40
50
60
70
80
90
100 110 120
700
600
500
400
300
200
100
0
Resistance (k
Ω
)
Temperature (°C)
Discharge temperature thermistor (RT62)
11-7. TEST POINT DIAGRAM AND VOLTAGE
1. Outdoor electronic control P.C. board
MUZ-GA50VA MUZ-GA60VA MUZ-GA71VA
LED 1
LED 2
CN801
325 VDC
-
370 VDC
Input
(
(
CN932
20-90 V
A
C
GND
5 V
5 VDC pulse wave
(
To
fan
motor
Defrost thermistor (R
T61)
Discharge temperature
thermistor (R
T62)
Outdoor heat exchanger temperature thermistor (R
T68)
(
(
(+)
(–)
(+)
(–)
Rush current relay
(–)R.V
. coil
(
12 VDC
15 V
15 V
CN931
(+)
(–)
(
CN661
CN701 Signal transmission (T
o 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
(
(
(
(
(
F801
FUSE
T3.15AL250V
(
Ambient temperature thermistor (R
T65)
CN663
Serial signal
Room A
5 - 10 VDC
CN601
230 VAC
Input
CN681
High pressure switch
MUZ-GA60VA-
E3
MUZ-GA71VA
(
(
(
Summary of Contents for MUZ-GA50VA-E1
Page 10: ...10 MUZ GA60VA E3 ...
