14
Loss of Communication (IFB to Inverter)
This code typically points to
- Wiring/harness issue between interface board and inverter
- Board failure
Next checks to confirm
- Inspect inter-board harness and connections
- Board substitution only after wiring is verified
Escalation
If wiring is good and both boards have power, one or both may need replacement.
Reset behavior
Manual reset via J4 Test pins.
Urgent
Fix now