Daikin RYN25DV3B ARY20DV2 Dokumentacja Strona 71

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Troubleshooting SiBE01-829
60 Service Diagnosis
4.5 Thermistor or Related Abnormality
4.5.1 Heat Exchanger Thermistor
Remote
Controller
Display
C4
,
J6
Method of
Malfunction
Detection
The temperatures detected by the indoor and outdoor heat exchanger thermistors are used to
determine thermistor errors.
Malfunction
Decision
Conditions
When the indoor and outdoor heat exchanger thermistor input is 0.04 V or less during
compressor operation
.
(Reference)
Indoor and outdoor heat exchanger thermistor: 1150k
or more
Supposed
Causes
Faulty connector connection
Faulty thermistor
Faulty PCB
Troubleshooting
Check No.06
Refer to P.67
C4
: Indoor heat exchanger thermistor
J6
: Outdoor heat exchanger thermistor
YES
(R8513)
NO
Check No. 06
Check the thermistor resistance
value.
YES
NO
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Correct the connection.
Replace the thermistor.
Replace the indoor unit PCB.
Is it normal?
Is it normal?
Check the connector connection.
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