Daikin AT12BV1LS Pocket Manual page 27

Troubleshooting
Trouble
shooting
Check No.6
Refer to
P.157
Note: If the outside temperature is below –10°C in the cooling
26
Be sure to turn off power switch before connect or
Caution disconnect connector, or parts damage may be occurred.
Check the air passage.
Is there any
short-circuit?
NO
Check the intake air filter.
Is it very dirty?
NO
Check the dust
accumulation on the indoor
unit heat exchanger.
Is it very dirty?
NO
Check No. 6
Indoor unit heat exchanger
thermistor check
Does it
conform to the
thermistor characteristic
chart?
NO
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.
YES
Provide sufficient air
passage.
YES
Clean the air filter.
YES
Clean the heat
exchanger.
YES
Replace the indoor
unit PCB.
Replace the
thermistor (replace
the indoor unit PCB).
Service Diagnosis
Si10-417
(R1401)