Continuous OFF
Check power
This code typically points to
- No 115 VAC to L1/L2
- No 24 VAC at SEC-1/SEC-2
- Blown transformer
- Open door switch
Next checks to confirm
- Verify line voltage at L1/L2
- Verify 24V at SEC terminals
- Check door switch and transformer
Escalation
If power is present, IFC failure likely
Reset behavior
Clears when power is restored.
Urgent
Fix now