Error code
live-all-lamps-blink Airflow flap or air guides not fitted correctly
How it shows on the unit All indoor-unit lamps blink together: 0.5 seconds on, 0.5 seconds off (live troubleshooting check table)
Applies to 4 models
MSZ-FD25VA, MSZ-FD35VA, MUZ-FD25VAH, MUZ-FD35VAH
What this means
The unit detects that the horizontal airflow flap is not attached correctly, and neither the indoor nor the outdoor unit runs. The owner manual names this after refitting the air guides during cleaning.
What you can check yourself
- Switch the unit off and disconnect the power.
- Check that the airflow flap and the air guides are refitted firmly as shown on the cleaning page, then switch on again.
- If all lamps still blink, contact the dealer.
Still not resolved? Contact a qualified installer or servicer.
See the Mitsubishi Electric manual (hosted by an authorized distributor)Hosted by an authorized distributor rather than by the manufacturer. We link to manuals, we never host them.
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