Test Point Diagram And Voltage; Inverter P.c. Board; Back Side Of Unit; Front Side Of Unit - Mitsubishi Electric MUZ-AP25VG - E1 Service Manual

12-6. TEST POINT DIAGRAM AND VOLTAGE

1. Inverter P.C. board

MUZ-AP25VG MUZ-AP35VG
MUZ-AP25VGH MUZ-AP35VGH MUZ-AP42VGH MUZ-AP50VGH

Back side of unit

230 V AC
Fuse (F62)
15 A 250 V
Output to
drive
compressor
(LDU,
LDV,
LDW)
Output to
drive outdoor
fan motor
(CN932)

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 20
Temperature( )
OBH789
MUZ-AP42VG
Smoothing
DB61
capacitor
260 - 370 V DC
(C63)
(-) (+)
Fuse (F901)
T3.15AL250V
Discharge temperature thermistor (RT62)
800
700
600
500
400
300
200
100
0
0 10 20 30 40 50 60 70 80 90 100 110 120
30 40
Temperature (°C)
MUZ-AP50VG
Smoothing
Smoothing
capacitor
capacitor (C61)
(C62)
(MUZ-AP42/50)
Fuse (F801)
T3.15AL250V
LED
Fin temperature thermistor(RT64)
200
180
160
140
120
100
80
60
40
20
0
0
50
R.V.coil Defrost heater
(CN721) (CN722)
230 V AC (MUZ-AP•VGH)
Fuse (F701)
T3.15AL250V
Fuse (F61)
25 A 250V
Jumper wire Jumper wire for
for pre-heat changing defrost
control setting setting (JS)
(JK)
10 20 30 40 50 60 70 80
Temperature( )
230 V AC