Error code
55 Filter-setting fault
How it shows on the unit OPERATION 5 blinks, TIMER 5 blinks; each lamp is 0.5 s on/0.5 s off
Applies to 3 models
ASYG09KMCB, ASYG12KMCB, ASYG14KMCB
What this means
The filter-indicator or filter setting is invalid.
What you can check yourself
- Clean the air filters and reset the filter indicator if configured; contact a technician if the indication remains.
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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