Si-93
Troubleshooting
Troubleshooting
47
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)
Summary of Contents for VAM 1000EJ
Page 5: ...Si 93 iv Table of Contents ...
Page 7: ...Introduction Si 93 vi 1 1 1 Cautions in Repair Warning ...
Page 8: ...Si 93 Introduction vii ...
Page 11: ...Si 93 2 General Constructions ...
Page 15: ...Si 93 6 Operation ...
Page 21: ...Si 93 12 Maintenance ...
Page 27: ...Si 93 18 Control Functions ...
Page 35: ...Si 93 26 Circuit Operations ...
Page 39: ...Si 93 30 Troubleshooting ...
Page 59: ...Troubleshooting Si 93 50 Troubleshooting ...
Page 61: ...Si 93 52 Supplementary Explanation ...
Page 72: ...Si 93 Appendix 63 Part 8 Appendix 1 Appendix 65 1 1 Wiring Diagram 65 ...
Page 73: ...Si 93 64 Appendix ...
Page 74: ...Si 93 Appendix Appendix 65 1 Appendix 1 1 Wiring Diagram VAM500EJVE VAM800EJVE VAM1000EJVE ...
Page 75: ...Appendix Si 93 66 Appendix VAM2000EJVE ...
Page 79: ...Si 93 iv Index ...