Mitsubishi Electric MUZ-FD25VA-E1 Service Manual page 38

11-6. Test point diagram and voltage
1. Inverter P.C. board
MUZ-FD25VA MUZ-FD35VA
MUZ-FD25VAH MUZ-FD35VAH
Back side of unit
AC230V
Fuse(F901)
250 V 3.15 A
Output to
drive
compressor
(LDU,
LDV,
LDW)
Front side of unit
Defrost thermistor(RT61)
Ambient temperature thermistor(RT65)
Outdoor heat exchanger temperature thermistor(RT68)
100
90
80
70
60
50
40
30
20
10
0
-20 -10 0 10
Temperature(:)
DB61
DC260 ~300 V
(-)
(+)
Discharge temperature thermistor(RT62)
700
600
500
400
300
200
100
0
0 10 20
20 30 40
Smoothing Smoothing
capacitor capacitor
(C62)
(C63)
Fuse(F801)2
50 V 3.15 A
30 40 50 60 70 80 90 100 110 120
Temperature(:)
38
Smoothing
Fuse(F701)2
capacitor
50 V 3.15 A
(C61)
LEV
Jumper wire for
connector
changing defrost
(CN724)
setting (JS)
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(:)
Heater
connector
(CN722)
MUZ-FD•VAH
R.V.coil
(CN721)
230 VAC
AC230 V
Jumper wire
for pre-heat
control setting
(JK)