Error codes › Electrical (12V / 120V / Converter / Inverter) › WFCO › Red LED near the lugs (reverse-polarity fuse blown)
WFCO error code Red LED near the lugs (reverse-polarity fuse blown)
The reverse-polarity fuses along the bottom edge of the DC fuse board near the VCC+ lug have blown: the RV battery was connected in reverse, at the battery or at the converter, even if only for a second. Those fuses are also the main connection between the converter section and the fuse board, so the converter shows no DC output.
What to check, and in what order, is in the app. The flow WFCO Auto-Detect converter / power center - no DC output or battery not charging (WF-9800-AD, 8500-AD, 8700-AD, 9500-AD) 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.
Start free trial 14 days free, no card neededDocumented in
- WF-8500-AD Series Power Center Product Manual (WF-8540-AD / WF-8560-AD), Rev 8/24WFCO
- WF-9500-AD Series Power Center Product Manual (WF-9540-AD / WF-9560-AD / WF-9580-AD), Rev 7/24WFCO
Related codes
- Yellow (amber) AC input LED onPower-center AC input voltage indicator: the incoming AC is below 105…
- Red AC input LED onPower-center AC input voltage indicator: the incoming AC is above 130…
- Red blown-fuse LED on the DC fuse boardThe DC branch fuse beside that LED has blown because the circuit drew…
- Audible alarm (AC reverse polarity)AC REVERSE POLARITY PROTECTION: the incoming AC neutral wire and hot…
All Electrical (12V / 120V / Converter / Inverter) error codes · Look up another code