Mitsubishi Electric Mr. Slim SUZ-SA71VA Technical & Service Manual page 22

11-4. TROUBLE CRITERION OF MAIN PARTS
SUZ-SA71VA.TH
Parts name
Defrost thermistor (RT61)
Fin temperature
thermistor (RT64)
Ambient temperature
thermistor (RT65)
Outdoor heat exchanger
temperature thermistor(RT68)
Discharge temperature
thermistor (RT62)
Measure the resistance between terminals with a tester.
(Temperature: -10°C to 40°C)
Compressor
Outdoor fan motor
R.V. coil (21S4)
Expansion valve coil
(LEV)
OCH561
Check method and criterion
Measure the resistance with a tester.
Refer to "11-6. 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 "11-6. Test point diagram and voltage" for the chart of thermistor.
Normal
U-V
U-W
0.92 Ω to 1.12 Ω
V-W
Measure the resistance between terminals with a tester.
(Temperature: -10°C to 40°C)
Color of the lead wire
WHT - BLK
BLK - RED
12 Ω to 17 Ω
RED - WHT
Measure the resistance between terminals with a tester.
(Temperature : -10°C to 40°C)
Normal
1.19 kΩ to 1.78 kΩ
Measure the resistance with a tester.
(Temperature : - 10°C to 40°C)
Color of the lead wire
RED - ORN
RED - WHT
37 Ω to 54 Ω
RED - BLU
RED - YLW
Normal
Normal
22
Figure
WHT RED BLK
W
V
U
WHT RED BLK
W
V
U
WHT
LEV
ORN
RED
YLW BLU