WFCO Power Converter: “Charge LED modes (red/green/blue)”
info RV power converter problems
What it means
On a WF-8900-AD Auto-Detect power center, an integrated LED shows the charge state. Red means the converter is in bulk (fast charge) mode at a 14.4 V target. The base color indicates the detected battery profile: green for lead-acid/AGM, blue for lithium. These are status indicators, not faults.
Most likely causes
- Red lit: battery is discharged, so the converter entered bulk/charge mode targeting 14.4 V most likely
- Green: Auto-Detect selected the lead-acid/AGM charge profile common
- Blue: Auto-Detect selected the lithium charge profile common
Safe checks you can do yourself
- Note the LED color to confirm the detected battery profile matches your installed battery type.
- Measure battery voltage; the converter holds 13.6 V in Power mode and targets 14.4 V in Charge/bulk mode.
- Remember that under heavy load the meter may read below 14.4 V even while in Charge mode, which is normal.
- Allow charging to continue; the unit drops to ~13.2 V float (Storage) once current draw stays low.
How to reset / clear Charge LED modes (red/green/blue)
- No reset needed; these are normal operating states.
- To re-run Auto-Detect battery detection, disconnect AC and the battery briefly, then reconnect and let the cycle restart.
When to call a technician
The LED indicates a chemistry that does not match your battery and will not re-detect, or the unit stays in red bulk mode for many hours without the battery charging.
Applies to
WF-8935-AD · WF-8945-AD · WF-8955-AD · WF-8965-AD · WF-8975-AD
FAQ
What does WFCO Power Converter code "Charge LED modes (red/green/blue)" mean?
On a WF-8900-AD Auto-Detect power center, an integrated LED shows the charge state. Red means the converter is in bulk (fast charge) mode at a 14.4 V target. The base color indicates the detected battery profile: green for lead-acid/AGM, blue for lithium. These are status indicators, not faults.
How do I reset WFCO Power Converter Charge LED modes (red/green/blue)?
No reset needed; these are normal operating states. To re-run Auto-Detect battery detection, disconnect AC and the battery briefly, then reconnect and let the cycle restart.
What is the most common cause of Charge LED modes (red/green/blue) on a WFCO Power Converter?
The most likely cause is red lit: battery is discharged, so the converter entered bulk/charge mode targeting 14.4 v.
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Sources
- Operator's Manual WF-8900-AD Series Power Center — LED Indicators; Auto-Detect; Power/Charge/Storage modes (13.6 / 14.4 / 13.2 VDC) (WFCO / Arterra Distribution)
Note: The WFCO manual describes the LED colors (red=bulk, green=lead-acid profile, blue=lithium profile) but does not publish a precise blink-rate table for each charge stage. Non-AD (older WF-8900) units do not have the lithium/blue Auto-Detect feature.
● Last verified 2026-06-29 · compiled from manufacturer documentation. Codes can vary by model year — always cross-check your unit’s manual.