Daikin FCQ35B7V1 Service Manual page 173

ESIE05-04
Troubleshooting
Heating: Indoor unit
[
Cooling: Outdoor unit
Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be
occurred.
Part 3 – Troubleshooting
wired
Is the type of
remote controller wired or
wireless?
Wireless
Is the
operation lamp
YES
of indoor unit photo-sensing
section flashing?
NO
]
NO
Does the fan rotate?
YES
YES
Is the filter soiled?
NO
YES
Is there any item
disturbing airflow?
NO
Is the heat
YES
exchanger soiled?
NO
Possible causes as follows:
∗ Refrigerant overcharge
∗ Mixing of air in refrigerant
system
∗ Faulty pressure switch
Is
the operation
YES
lamp of remote controller
flashing?
Troubleshooting
Diagnose based on the
error code on remote
controller
Malfunction of fan motor
Check the magnetic switch
and aux. switch for fan
motor
Cleaning
Remove the disturbing
item
Cleaning of the heat
exchanger
After vacuum drying,
charge correct amount of
refrigerant
Check the pressure switch
(S1992)
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