20
Twinning problem / twinning fault
This code typically points to
- Twinning detected then lost in same power cycle
- Bad twin wiring
- Mismatched boards
- Phasing issue
Next checks to confirm
- Confirm identical boards
- Verify twin wiring between boards
- Confirm phasing and twinning configuration
Escalation
Fault display until twinning issue is corrected
Reset behavior
Clears when twin configuration is corrected; may require power cycle.
Urgent
Fix now