Mitsubishi Electric MXZ-2C30VA, Service Manual

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113
CN931 to fan moter
CN801 to power board
(6C120VA)
/outdoor power
P.C. board
(6C122VA)
325 - 350 VDC Input
F930 FUSE
T3.15AL250V
F801 FUSE
T3.15AL250V
SW1
SW2
SW871
LED 3
LED 2
LED 1
CN681
High pressure switch
18 VDC
17 VDC
CN661
Defrost
thermistor (RT61)
Discharge temperature
thermistor (RT62)
Outdoor heat exchang-
er temperature
thermistor (RT68)
LEV: 12 VDC pulse wave
CN797 LEV M
CN796 LEV Room F CN795 LEV Room E CN794 LEV Room D CN793 LEV Room C CN792 LEV Room B CN791 LEV Room
A
CN711
to power board
(6C120VA)
/out-
door power P.C.
board
(6C122VA)
230 VAC Input
F711 FUSE
T3.15AL250V
CN712 R.V. coil
230 VAC Output
CN713 Valve coil
230 VAC Output
CN714 Heater (option)
230 VAC Output
Serial signal Room F
Serial signal Room E
Serial signal Room D
Serial signal Room C
Serial signal Room B
Serial signal Room A
CN631
signal to
indoor
unit
Terminal block (S2)
Terminal block (S1)
)
)
)
CN611
signal to
indoor
unit
CN601
signal to
indoor
unit
325-350 VDC
15 VDC
0~15 VDC
15 VDC pulse wave
CN663 Ambient temp thermistor (RT65)
CN781
to power board
(6C120VA)
/
outdoor power P.C. board
(6C122VA)
GND
Signal transmission
X64A
X64B
12 VDC
CN701
to power board
(6C120VA)
/
outdoor power P.C. board
(6C122VA)
Signal reception
MXZ-6C120VA MXZ-6C122VA
(
(
(
(
(
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
Resistance (k
Ω
)
Temperature (°C)
Defrost thermistor (RT61)
Ambient temperature thermistor (RT65)
Outdoor heat exchanger temperature thermistor (RT68)
3. Control P.C. board/outdoor control P.C. board
CN881
to power board
(6C120VA)
/outdoor power
P.C. board
(6C122VA)
OBH584G