
Troubleshooting
Si71-502
52
Troubleshooting
1.17
Thermistor
Error Detection
Method
Remove thermistor and check resistance with tester.
Error Generating
Conditions
Possible Causes
Faulty thermistor
Broken wire
Faulty control PCB
Faulty contact in connector
Troubleshooting
Note:
Refer to the thermistor temperature - resistance conversion table when measuring resistance.
Thermistor temperature - resistance conversion table
If measured value deviates significantly from above values, thermistor is faulty.
Use tester to check resistance
NO
YES
Is
resistance
as shown below?
Thermistor is normal.
Remove thermistor
from main unit PCB
(X12A, X13A), and
check resistance
using tester.
If measured value deviates significantly
from values in the table, thermistor is
faulty.
(HF015)
Thermistor
temperature
Sensor resistance
Thermistor
temperature
Sensor resistance
-10ºC or less
108k
Ω
or more
22ºC
Approx. 23k
Ω
-5ºC
Approx. 85k
Ω
24ºC
Approx. 21k
Ω
0ºC
Approx. 66k
Ω
26ºC
Approx. 19k
Ω
5ºC
Approx. 51k
Ω
28ºC
Approx. 18k
Ω
10ºC
Approx. 40k
Ω
30ºC
Approx. 16k
Ω
14ºC
Approx. 33k
Ω
35ºC
Approx. 13k
Ω
16ºC
Approx. 30k
Ω
40ºC
Approx. 11k
Ω
18ºC
Approx. 27k
Ω
50ºC or more
7k
Ω
or less
20ºC
Approx. 25k
Ω
Continuity check
(HL028)
Содержание VAM 350GJVE
Страница 7: ...Introduction Si71 502 vi 1 1 1 Cautions in Operation and Maintenance...
Страница 8: ...Si71 502 Introduction vii...
Страница 13: ...General Constructions Si71 502 4 General Constructions...
Страница 29: ...Maintenance Si71 502 20 Maintenance...
Страница 43: ...Circuit Operations Si71 502 34 Circuit Operations...
Страница 103: ...After sales Service Si71 502 94 Operation Manual...
Страница 106: ...Si71 502 Appendix Appendix 97 VAM1500GJVE VAM2000GJVE...
Страница 107: ...Appendix Si71 502 98 Appendix...