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CF1 — Communication Error
critical
A communication fault has been detected between internal components. The microwave may not function properly.
Common causes
- Loose or damaged wiring between boards
- Control board communication failure
- Electrical interference or power surge
How to fix it
- Unplug and wait 60 seconds before restarting
- Check for visible wiring damage if accessible
- Contact Samsung support if error persists
Parts you might need
- Main control board
- Display board
- Communication wiring harness
Compiled from Samsung's public support resources — original page. Recalled.co is not affiliated with Samsung. Report incorrect information at hello@recalled.co.