Error code
live-operation-lamp-defrost-blink Automatic defrost in progress
How it shows on the unit Operation lamp blinks during automatic defrost; this is a live operating indication, not a fault-code table
Applies to 4 models
ASYB09LDC, AOYS09LDC, ASYB12LDC, AOYS12LDC
What this means
The unit is temporarily defrosting the outdoor heat exchanger; heating pauses and the unit normally resumes afterward. This is no error/no fault.
What you can check yourself
- Wait for the automatic defrost cycle to finish; normal heating resumes afterward.
Still not resolved? Contact a qualified installer or servicer.
See the Fujitsu manual (hosted by an authorized distributor)Hosted by an authorized distributor rather than by the manufacturer. We link to manuals, we never host them.