17
10-4. TROUBLE CRITERION OF MAIN PARTS
SUZ-KA09NA SUZ-KA12NA SUZ-KA15NA SUZ-KA18NA
Part name
Check method and criterion
Figure
Defrost thermistor (RT61)
Fin temperature
thermistor (RT64)
Ambient temperature
thermistor (RT65)
Outdoor heat exchanger
temperature thermistor
(RT68)
Measure the resistance with a tester.
Refer to 10-6. “Test point diagram and voltage”, 1. “Inverter P.C.
board”, for the chart of thermistor.
Discharge temperature
thermistor (RT62)
Measure the resistance with a tester. Before measurement, hold the
thermistor with your hands to warm it up.
Refer to 10-6. “Test point diagram and voltage”, 1. “Inverter P.C.
board”, for the chart of thermistor.
Compressor
Measure the resistance between terminals with a tester.
(Temperature: 14 ~ 104 °F (-10 ~ 40 °C))
Normal (
Ω
)
KA09
KA12
KA15/18
U-V
U-W
V-W
1.36 ~ 1.93
1.52 ~ 2.17
0.78 ~ 1.11
Outdoor fan motor
Measure the resistance between lead wires with a tester.
(Temperature: 14 ~ 104 °F (-10 ~ 40 °C))
Color of lead wire
Normal (
Ω
)
KA09/12/15
KA18
RED – BLK
BLK – WHT
WHT – RED
28 ~ 40
11 ~ 16
R. V. coil (21S4)
Measure the resistance with a tester.
(Temperature: 14 ~ 104 °F (-10 ~ 40°C))
Normal (k
Ω
)
0.97 ~ 1.38
Expansion valve coil
(LEV)
Measure the resistance with a tester.
(Temperature: 14 ~ 104 °F (-10 ~ 40 °C))
Color of lead wire
Normal (
Ω
)
WHT – RED
37 ~ 54
RED – ORN
YLW – BRN
BRN – BLU
W
U
V
WHT
RED BLK
WHT
RED BLK
LEV
WHT
RED
ORN
YL
W
BRN
BLU
