Service manual

33
SUZ-KA50VA2.TH SUZ-KA60VA2.TH SUZ-KA71VA2.TH
11-4. Trouble criterion of main parts (2)
Part name
Figure
Check method and criterion
Outdoor fan motor
R.V. coil (21S4)
Expansion valve coil
(LEV)
Measure the resistance between lead wires using a tester.
(Temperature : -10°C ~ 40°C)
RED - BLK
BLK - WHT
WHT - RED
SUZ-KA50/60VA2.TH
Normal
Measure the resistance using a tester.
(Temperature : -10°C ~ 40°C)
Normal
SUZ-KA50/60VA2.TH
1.32 k ~ 1.62 k
SUZ-KA71VA2.TH
1.19 k ~ 1.78 k
WHT - RED
RED - ORN
YLW - BRN
BRN - BLU
Normal
37.4  ~ 53.9 
Measure the resistance using a tester.
(Temperature : -10°C ~ 40°C)
Measure the resistance using a tester.
Refer to 11-6. “Test point diagram and voltage”, 11-6-4. “Outdoor
electronic control P.C. board” or 11-6-2, 11-6-3. “Inverter P.C. board”,
for the chart of thermistor.
Color of the lead wire
Color of the lead wire
Discharge temperature
thermistor (RT62)
Measure the resistance using a tester.
Before measurement, hold the thermistor with your hands to warm it up.
Refer to 11-6. “Test point diagram and voltage”, 11-6-4. “Outdoor
electronic control P.C. board” or 11-6-2, 11-6-3. “Inverter P.C. board”,
for the chart of thermistor.
Defrost thermistor
(RT61)
Fin temperature
thermistor (RT64)
Ambient temperature
thermistor (RT65)
Outdoor heat exchanger
temperature thermistor
(RT68)
13.4  ~ 16.4 
SUZ-KA71VA2.TH
12  ~ 17 
Measure the resistance between terminals using a tester.
(Temperature : -10°C ~ 40°C)
Compressor
High pressure switch
(HPS)
SUZ-KA60VA2.TH
Pressure
3.7 ± 0.15 MPa
4.8 MPa
Close
Open
Normal
SUZ-KA50/60VA2.TH
0.86  ~ 1.06 
SUZ-KA71VA2.TH
0.92  ~ 1.12 
LEV
WHT
RED
YLW
BRN
ORN
BLU
+ 0.05
- 0.1
LEV
WHT
RED
YLW
ORN
BLU
SUZ-KA50/60VA2.TH
RED - ORN
RED - WHT
RED - BLU
RED - YLW
Normal
37  ~ 54 
Color of the lead wire
SUZ-KA70VA2.TH
W
U
V
WHT
RED BLK
W
U
V
WHT
RED BLK
OCH472A