Suz-Ka50Va3.Th - Mitsubishi Electric SUZ-KA25VA3 Service Manual

11-6. TEST POINT DIAGRAM AND VOLTAGE
11-6-1. Inverter P.C. board
SUZ-KA25VA3.TH
Back side of unit
230 VAC
Fuse (F901)
T3.15AL250V
Output to
drive outdoor
fan motor
(CN932)
Output to
drive
compressor
(LDU,
LDV,
LDW)
LED
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( )
OCH530A
SUZ-KA35VA3.TH
Smoothing
DB61
capacitor (C63)
260 - 370 VDC
(-)
(+)
Discharge temperature thermistor(RT62)
700
600
500
400
300
200
100
0
0 10 20 30 40
30 40
Temperature( )

SUZ-KA50VA3.TH

Smoothing
Smoothing
capacitor capacitor
(C62) (C61)
Fuse (F801)
T3.15AL250V
200
180
160
140
120
100
50 60 70 80 90 100 110 120

R.V.coil
Heater connector
(CN721)
(CN722)
230 VAC
Fuse (F701)
T3.15AL250V
Jumper wire
Jumper wire for
for pre-heat
changing defrost
control setting
setting (JS)
(JK)
Fin temperature thermistor(RT64)
80
60
40
20
0
0 10 20 30 40 50 60 70 80
Temperature( )
230 VAC