Error code
live-filter-lamp-3-blinks Filter-cleaning reminder
How it shows on the unit 3 blinks, repeating every 21 seconds in the live filter-indicator table
Applies to 3 models
ASYG09KMCB, ASYG12KMCB, ASYG14KMCB
What this means
The filter indicator is requesting air-filter cleaning; this is a maintenance reminder, not a confirmed equipment fault.
What you can check yourself
- Switch off the unit and clean the air filters.
- After cleaning, hold the indoor-unit MANUAL AUTO button for 3 seconds or less to reset the filter indicator.
Still not resolved? Contact a qualified installer or servicer.
See the official Fujitsu manualA deep link to the manufacturer's own PDF for full technical detail. We link to manuals, we never host them.
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