Mitsubishi Electric Mr. SLIM MSZ-FA25VA Technical Manual página 154

Resolución de averías
11-6. Test point diagram and voltage
1. Inverter P.C. board
MUZ-GC25VA
MUZ-GC25VAH
Back side of unit
DB61
280V ~ 370V
DC
(-)
(+)
Output to
drive
compressor
(LDW,
LDV,
LDU)
LED monitor
lamp
Front side of unit
Defrost thermistor(RT61)
Ambient temperature thermistor(RT65)
100
90
80
70
60
50
40
30
20
10
0
-20 -10 0 10
Temperature(
154
Smoothing capacitor
(C62)
230V AC
DB61
Discharge temperature thermistor(RT62)
700
600
500
400
300
200
100
0
0 10 20 30
20 30 40
°C
)
Fuse Smoothing capacitor
(F801) (C61)
LEV
connector
(CN724)
40 50 60 70 80 90 100 110 120
°C
Temperature( )
Varistor
(NR62)
Varistor
(NR63)
Output to drive Heater
R.V.coil
(CN721)
outdoor connector
fan motor
(CN771) MUZ-
GC25VAH
Fin temperature thermistor(RT64)
200
180
160
140
120
100
80
60
40
20
0
0 10 20 30 40 50 60 70 80
°C
Temperature( )
Varistor
(NR61)
Fuse
(F701)
(CN722)