WFCO WF-5318 / WF-5320 error code Audible alarm (protection active)
The inverter sounds an audible alarm to indicate that output power has stopped because a protection feature activated (overload, battery voltage out of range, over temperature, short circuit). For battery voltage approaching its limit the alarm is a warning that sounds before the power stops. Fault alarms may continue for up to one minute.
What to check, and in what order, is in the app. The flow WFCO WF-5318 / WF-5320 inverter - no 115 V output (shore, battery or dark remote panel) walks this code step by step with the pass/fail measurements, wiring schematics and procedures that go with it, and it works offline in the bay.
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