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E81 — Communication Open Error
critical
An open circuit has been detected in the communication line between internal components. The microwave may not function.
Common causes
- Open circuit in communication wiring
- Loose connector between boards
- Control board communication fault
How to fix it
- Unplug and restart after 60 seconds
- Check visible connectors if accessible
- Request service if error persists
Parts you might need
- Communication wiring harness
- Main control board
- Display board
Compiled from Samsung's public support resources — original page. Recalled.co is not affiliated with Samsung. Report incorrect information at hello@recalled.co.