WFCO WF-5110 / WF-5118 / WF-5120 error code Red LED on (error code on display)
The RED Fault LED indicates an inverter FAILURE - over-temperature, overload, or short-circuit shutdown; the display shows the specific error code.
What to check, and in what order, is in the app. The flow WFCO Inverter (WF-5110 / WF-5118 / WF-5120) — fault diagnostic 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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- WFCO_WF-5118-5120_Operator_Manual_511820.pdf
- WFCO_WF-5100_Series_Inverter_Users_Manual.pdf