47
11-6. TEST POINT DIAGRAM AND VOLTAGE
11-6-1. Inverter P.C. board
SUZ-KA25VA3.TH SUZ-KA35VA3.TH SUZ-KA50VA3.TH
-20
-10
0
10
20
30
40
0
10
20
30
40
50
60
70
80
90
100
Temperature( )
Defrost thermistor(RT61)
Ambient temperature thermistor(RT65)
Outdoor heat exchanger temperature thermistor(RT68)
Temperature( )
Discharge temperature thermistor(RT62)
0
10
20
30
40
50
60
70
80
90 100 110 120
0
100
200
300
400
500
600
700
0 10 20 30 40 50 60 70 80
0
20
40
60
80
100
120
140
160
180
200
Temperature( )
Fin temperature thermistor(RT64)
Resistance(k )
Resistance(k )
Resistance(k )
Fin
temperature
thermistor/R
T64
(CN642)
Ambient
temperature
thermistor/R
T65
(CN643)
Discharge
temperature
thermistor/R
T62
(CN641)
Defrost
thermistor
/R
T61(CN641)
DB61
260 - 370 VDC
Front side of unit
230 VAC
Smoothing
capacitor
(C62)
Output to
drive
compressor
(LDU,
LDV,
LDW)
(+)
(-)
Fuse (F701)
T3.15AL250V
Smoothing
capacitor
(C61)
Smoothing
capacitor (C63)
Fuse (F901)
T3.15AL250V
R.V.coil
(CN721)
230 VAC
Jumper wire for
changing defrost
setting (JS)
Signal
of
outdoor
fan
motor
(CN931)
230 VAC
Outdoor
heat
exchanger
temperature
thermistor
/R
T68
(CN644)
Jumper wire
for pre-heat
control setting
(JK)
Heater connector
(CN722)
Fuse (F801)
T3.15AL250V
Back side of unit
LEV
connector
(CN724)
Output to
drive outdoor
fan motor
(CN932)
LED
OCH530
