Mitsubishi MXZ-2A52VA Service Manual Page 139

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139
0 102030405060708090100110120
700
600
500
400
300
200
100
0
Resistance (kΩ)
Temperature (°C)
Discharge temperature thermistor (RT62)
-20-100 10203040
100
90
80
70
60
50
40
30
20
10
0
Defrost thermistor (RT61)
Ambient temperature thermistor (RT65)
Gas pipe temperature thermistor (RT6A, 6B, 6C, 6D)
(Except MXZ-3A54VA- E4 , E5 , E6 , E7 and MXZ-4A71VA- E4 , E5 , E6 , E7 .)
Outdoor heat exchanger temperature thermistor (RT68)
Temperature (°C)
Resistance (kΩ)
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
(
Gas pipe D thermistor (RT6D)
(
Gas pipe C thermistor (RT6C)
(
Gas pipe B thermistor (RT6B)
(
Gas pipe A thermistor (RT6A)
CN932
20-90V AC
GND
5V
5V DC
pulse wave
(
To fan
motor
Defrost thermistor (RT61)
Discharge temperature thermistor (RT62)
Outdoor heat exchanger
temperature thermistor (RT68)
(
(
(+)
(–)
(+)
Rush current relay
(–)
R.V. coil (–)
(
12V
DC
15V
15V
CN931
(+)
(–)
(
CN661
CN701
Signal transmission
(To power board)
5V DC pulse wave
(+)
(–)
(
GND
CN702
Signal reception
(From power board)
5V DC pulse wave
GND (power board)
CN781
LEV E
(
(+)
(–)
(
(+)
(–)
(
(+)
(–)
(
(+)
(–)
(
CN791
CN792
CN793
CN794
CN681 MXZ-4A80VA
CN662
(
(
(
F801
FUSE
T3.15AL250V
LED 3
(
Ambient temperature
thermistor (RT65)
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
2. Outdoor electronic control P.C. board
MXZ-3A54VA MXZ-4A71VA MXZ-4A80VA -
E1
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