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Troubleshooting
SiBE01-503
62
Service Diagnosis
4.5
Thermistor or Related Abnormality (Indoor Unit)
Remote
Controller
Display
C4
,
C9
Method of
Malfunction
Detection
The temperatures detected by the thermistors are used to determine thermistor errors.
Malfunction
Decision
Conditions
When the thermistor input is more than 4.96 V or less than 0.04 V during compressor
operation
∗
.
∗
(Reference)
Indoor heat exchanger thermistor: above about 100°C (less than 670
Ω)
Room temperature thermistor: above about 70°C (less than 1.7k
Ω
)
Supposed
Causes
Faulty connector connection
Faulty thermistor
Faulty PCB
Troubleshooting
Check No.06
Refer to P.67
C4
:
Indoor heat exchanger thermistor
C9
:
Room temperature thermistor
Check the connector connection.
YES
Correct the connection.
Replace the thermistor.
(Replace the indoor unit PCB.)
Replace the indoor unit PCB.
Is it normal?
Is it normal?
(R4696)
NO
Check No. 06
Thermistor resistance check
YES
NO
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Summary of Contents for ARY20DV2
Page 1: ...SiBE01 503 SPLIT Pair D Series Applied Models zNon Inverter Pair Heat Pump ...
Page 5: ...SiBE01 503 iv Table of Contents Index i Drawings Flow Charts iii ...
Page 10: ...SiBE01 503 List of Function 1 Part 1 List of Function 1 Functions 2 ...
Page 13: ...Functions SiBE01 503 4 List of Function ...
Page 14: ...SiBE01 503 Specifications 5 Part 2 Specifications 1 Specifications 6 ...
Page 35: ...Control Specification SiBE01 503 26 Functions and Control ...
Page 59: ...Instructions SiBE01 503 50 System Configuration ...
Page 79: ...Check SiBE01 503 70 Service Diagnosis ...
Page 117: ...Others SiBE01 503 108 Others ...