Muz-gb50va – MITSUBISHI ELECTRIC MUZ-GB50VA User Manual
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1. Outdoor electronic control P.C. board
MUZ-GB50VA
LED 1
LED 2
CN801
325V DC
~
370V DC
Input
(
(
CN932
20-90V AC
GND
5V
5V DC
pulse wave
(
To
f
a
n
motor
Defrost thermistor (R
T61)
Discharge temperature thermistor (R
T62)
Outdoor heat exchanger
temperature thermistor (R
T68)
(
(
(+)
(–)
(+)
Rush current relay
(–)
R.V
. coil (–)
(
12V
DC
15V
15V
(+)
(–)
CN931
(
CN661
CN701
Signal transmission
(T
o power board)
5V DC pulse wave
(+)
(–)
(
GND
CN702
Signal reception
(From power board)
5V DC pulse wave
GND (power board)
CN781
CN795
12V DC
pulse wave
LEV
(
(
(
(
-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
"
)
Resistance (k
"
)
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
'
)
Temperature (
;
)
Discharge temperature thermistor (RT62)
F801
FUSE
3.15A/250V
(
Ambient temperature
thermistor (R
T65)
CN663
Serial signal
Room A
5~10V DC
CN601
230V AC
Input
(
(
10-7. Test point diagram and voltage
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