Mitsubishi Electric Mr. SLIM MSZ-FA25VA Technical Manual página 288

Resolución de averías
11-6. Test point diagram and voltage
1. Inverter P.C. board
MUZ-HC25VA
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)
100
90
80
70
60
50
40
30
20
10
0
-20 -10 0 10
Temperature(
288
MUZ-HC35VA MUZ-HC35VAB
230V AC
DB61
Discharge temperature thermistor(RT62)
700
600
500
400
300
200
100
0
0 10
20 30 40
°C )
Smoothing capacitor Fuse
(C62) (F801)
20 30 40 50 60 70 80 90 100 110 120
Temperature( °C )
Smoothing capacitor Varistor
(C61) (NR62)
Varistor
(NR63)
Output to drive
R.V.coil
outdoor fan motor
(CN721)
(CN771)
Fin temperature thermistor(RT64)
200
180
160
140
120
100
80
60
40
20
0
0 10 20 30 40 50 60 70 80
Temperature(
Varistor
(NR61)
Fuse
(F701)
°C )