Mitsubishi Electric SVZ-KP18NA Service Manual page 22

10-4. TROUBLE CRITERION OF MAIN PARTS
SUZ-KA09NA
Part name
Defrost thermistor (RT61)
Fin temperature
thermistor (RT64)
Ambient temperature
thermistor (RT65)
Outdoor heat exchanger
temperature thermistor
(RT68)
Discharge temperature
thermistor (RT62)
Compressor
Outdoor fan motor
R. V. coil (21S4)
Expansion valve coil
(LEV)
TCH022
SUZ-KA12NA
Check method and criterion
Measure the resistance with a tester.
Refer to "Inverter P.C. board" in "10-6. TEST POINT DIAGRAM AND
VOLTAGE", for the chart of thermistor.
Measure the resistance with a tester. Before measurement, hold the
thermistor with your hands to warm it up.
Refer to "Inverter P.C. board" in "10-6. TEST POINT DIAGRAM AND
VOLTAGE", for the chart of thermistor.
Measure the resistance between terminals with a tester.
(Temperature: 14 to 104 °F (-10 to 40 °C))
KA09
U-V
U-W 1.36 to 1.93 1.52 to 2.17
V-W
Measure the resistance between lead wires with a tester.
(Temperature: 14 ~ 104 °F (-10 ~ 40 °C))
Color of lead wire
RED – BLK
BLK – WHT
WHT – RED
Measure the resistance with a tester.
(Temperature: 14 to 104 °F (-10 to 40°C))
Normal (kΩ)
0.97 to 1.38
Measure the resistance with a tester.
(Temperature: 14 ~ 104 °F (-10 ~ 40 °C))
Color of lead wire
WHT – RED
RED – ORN
YLW – BRN
BRN – BLU
SUZ-KA15NA
Normal (Ω)
KA12 KA15/18
0.78 to 1.11
Normal (Ω)
KA09/12/15
28 to 40
Normal (Ω)
37 to 54
22
SUZ-KA18NA
WHT
V
WHT
KA18
11 to 16
WHT
RED
ORN
Figure
RED BLK
W
U
RED BLK
LEV