Mitsubishi Electric SUZ-KA25VA Service Manual page 69

12-4. Trouble criterion of main parts (1)
SUZ-KA25VA.TH
SUZ-KA25VAH.TH SUZ-KA35VAH.TH
Part name
Defrost thermistor (RT61)
Fin temperature
thermistor (RT64)
Ambient temperature
thermistor (RT65)
Outdoor heat exchanger
temperature thermistor(RT68)
(SUZ-KA25/35VA(H)R1.TH)
Discharge temperature
thermistor (RT62)
Compressor
Outdoor fan motor
R.V. coil
Expansion valve coil
(LEV)
Defrost heater
SUZ-KA·VAH
SUZ-KA35VA.TH
Check method and criterion
Measure the resistance with a tester.
Refer to 12-6. "Test point diagram and voltage", 12-6-1. or 12-6-3.
"Inverter P.C. board", 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 12-6. "Test point diagram and voltage", 12-6-1. or 12-6-3.
"Inverter P.C. board", for the chart of thermistor.
Measure the resistance between the terminals with a tester.
(Part temperature -20°C ~ 40°C)
SUZ-KA25VA(H).TH
U-V
U-W
1.28 ~ 1.66
V-W
Measure the resistance between the terminals with a tester.
(Part temperature -20°C ~ 40°C)
Color of the lead wire
SUZ-KA25/35VA(H).TH
WHT - BLK
BLK - RED
31
RED - WHT
Measure the resistance between the terminals with a tester.
(Part temperature -20°C ~ 40°C)
SUZ-KA25/35VA(H).TH
1.20 k ~ 1.55 k
Measure the resistance with a tester.
(Part temperature : -20°C ~ 40°C)
Color of the lead wire
WHT - RED
RED - ORN
YLW - BRN
BRN - BLU
Measure the resistance with a tester.
(Part temperature -20°C ~ 40°C)
Normal
333
SUZ-KA25VAR1.TH
SUZ-KA25VAHR1.TH SUZ-KA35VAHR1.TH
Normal
SUZ-KA35VA(H).TH
SUZ-KA25VA(H)R1.TH
0.41 ~ 0.53 1.36 ~ 1.93
Normal
SUZ-KA25/35VA(H)R1.TH
29
~ 41
Normal
SUZ-KA25/35VA(H)R1.TH
1.19 k ~ 1.78 k
Normal
37 ~ 54
~ 428
69
SUZ-KA35VAR1.TH
WHT
2
SUZ-KA35VA(H)R1.TH
V
1.52 ~ 2.17
WHT
~ 42
V
WHT
RED
ORN
Figure
RED BLK
3
1
W
U
RED BLK
2 3
1
W
U
LEV