Troubleshooting
Si-93
34
Troubleshooting
1.4
Indoor Air Thermistor Error
Remote Controller
LCD Display
Error Code
666
64444
Inspection
—
Unit No.
5
LED Indication
Remote Controller
4
Main Unit
5
Error Detection
Method
Temperature detected by inside air temperature sensor is used to detect errors.
Error Generating
Conditions
When value detected by inside air temperature sensor is -40ºC or below (open circuit) or 70ºC or higher
(shorting).
Possible Causes
■
Faulty sensor
■
Broken wire
■
Faulty control PCB
■
Faulty contact in connector
Troubleshooting
Note:
Note 1:
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
Remove Indoor air
thermistor (R1T) from
X12A (3P) on control
PCB, and measure
resistance.
Is
thermistor
normal?
Note 1
YES
NO
Replace indoor air
thermistor.
If there is no faulty
contact, replace
control PCB.
(HF003)
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 1000EJ
Страница 5: ...Si 93 iv Table of Contents ...
Страница 7: ...Introduction Si 93 vi 1 1 1 Cautions in Repair Warning ...
Страница 8: ...Si 93 Introduction vii ...
Страница 10: ...Si 93 General Constructions 1 Part 1 General Constructions 1 General Constructions 3 1 1 Explanation 3 ...
Страница 11: ...Si 93 2 General Constructions ...
Страница 15: ...Si 93 6 Operation ...
Страница 21: ...Si 93 12 Maintenance ...
Страница 27: ...Si 93 18 Control Functions ...
Страница 35: ...Si 93 26 Circuit Operations ...
Страница 39: ...Si 93 30 Troubleshooting ...
Страница 59: ...Troubleshooting Si 93 50 Troubleshooting ...
Страница 61: ...Si 93 52 Supplementary Explanation ...
Страница 72: ...Si 93 Appendix 63 Part 8 Appendix 1 Appendix 65 1 1 Wiring Diagram 65 ...
Страница 73: ...Si 93 64 Appendix ...
Страница 74: ...Si 93 Appendix Appendix 65 1 Appendix 1 1 Wiring Diagram VAM500EJVE VAM800EJVE VAM1000EJVE ...
Страница 75: ...Appendix Si 93 66 Appendix VAM2000EJVE ...
Страница 79: ...Si 93 iv Index ...
Страница 81: ...Si 93 vi Drawings Flow Charts When no indication is displayed on remote controller 45 Wiring Diagram 65 ...