Troubleshooting Si10-417
26 Service Diagnosis
Trouble
shooting
Check No.6
Refer to
P.157
Note: If the outside temperature is below –10°C in the cooling
mode, the system may get interrupted with error A5
displayed. The system will be reset itself, but this stop
will be put in the error history memory.
NO
NO
NO
Check No. 6
Indoor unit heat exchanger
thermistor check
Check the intake air filter.
Check the air passage.
YES
YES
(R1401)
Check the dust
accumulation on the indoor
unit heat exchanger.
YES
YES
Is there any
short-circuit?
Is it very dirty?
Is it very dirty?
NO
Provide sufficient air
passage.
Clean the air filter.
Clean the heat
exchanger.
Replace the indoor
unit PCB.
Replace the
thermistor (replace
the indoor unit PCB).
Caution
Be sure to turn off power switch before connect or
disconnect connector, or parts damage may be occurred.
Does it
conform to the
thermistor characteristic
chart?
Si10-417.fm Page 26 Wednesday, September 22, 2004 6:38 PM
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