74
11-7. TEST POINT DIAGRAM AND VOLTAGE
1. Outdoor electronic control P.C. board
LED 1
LED 2
Bus-bar
voltage
CN801
325~370
V DC
Input
(
(
(
LEV Room
A
(
12V DC
pulse wave
(
LEV Room
B
(
12V DC
pulse wave
(
LEV Room
C
(
12V DC
pulse wave
(
LEV Room
D
(
12V DC
pulse wave
(
High pressure switch
CN932
20-90V AC
GND
5V
5V DC
pulse wave
(
T
o fan
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
Signal transmission
(T
o power board)
5V DC pulse wave
(+)
(–)
(
GND
Signal reception
(From power board)
5V DC pulse wave
GND (power board)
CN781
LEV E
(
(+)
(–)
(
(+)
(–)
(
(+)
(–)
(
(+)
(–)
(
CN791
CN792
CN793
CN794
CN681 (
MXZ-3C68/4C71V
A)
(
(
(
F801
FUSE
T3.15AL250V
LED 3
(
Ambient temperature
thermistor (R
T65)
CN663
Serial signal Room D
12~24V DC
Serial signal Room C
12~24V DC
Serial signal Room B
12~24V DC
Serial signal
Room A
12~24V DC
CN604
CN603
CN602
CN601
230V AC
Input
SW1
CN795
12V DC
pulse wave
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)
-20
-10
0
10
20
30
40
100
90
80
70
60
50
40
30
20
10
0
Defrost thermistor (RT61)
Ambient temperature thermistor (RT65)
Outdoor heat exchanger temperature thermistor (RT68)
Temperature (°C)
Resistance (k
Ω
)
MXZ-3C54VA MXZ-3C68VA MXZ-4C71VA
CN701
CN702
DM00Y765
Содержание MXZ-3C54VA
Страница 16: ...16 WIRING DIAGRAM 6 MXZ 3C54VA ...
Страница 17: ...17 MXZ 3C68VA ...
Страница 18: ...18 MXZ 4C71VA ...
Страница 19: ...19 MXZ 4C80VA ...
Страница 20: ...20 MXZ 5C100VA ...
Страница 21: ...21 MXZ 6C120VA ...