Victron Energy Power Converter: “Error 1”
warning RV power converter problems
What it means
Battery temperature too high. The charger halts charging to protect the battery and will start again on its own once the battery cools. When no external temperature sensor is fitted, the charger assumes at startup or in float that its own temperature and the battery temperature are similar.
Most likely causes
- Genuine high battery temperature (hot install location, heavy charge/discharge cycling) common
- Charger mounted somewhere hot so its internal temperature estimate is high (no external sensor fitted) common
- Poor ventilation around the battery or charger less common
Safe checks you can do yourself
- Check the actual battery temperature by hand/with a thermometer; let it cool before expecting charging to resume.
- Improve airflow around both the battery and the charger.
- If an external temperature sensor is used, confirm it is fitted to the battery and reading correctly in VictronConnect.
How to reset / clear Error 1
- No manual reset needed; the error auto-clears once the temperature drops to a safe level.
When to call a technician
If the battery runs hot under normal conditions, is swollen, or the error persists with a cool battery, stop charging and have the battery and install checked by a professional.
Applies to
Orion XS 12/12-50A DC-DC charger
FAQ
What does Victron Energy Power Converter code "Error 1" mean?
Battery temperature too high. The charger halts charging to protect the battery and will start again on its own once the battery cools. When no external temperature sensor is fitted, the charger assumes at startup or in float that its own temperature and the battery temperature are similar.
How do I reset Victron Energy Power Converter Error 1?
No manual reset needed; the error auto-clears once the temperature drops to a safe level.
What is the most common cause of Error 1 on a Victron Energy Power Converter?
The most likely cause is genuine high battery temperature (hot install location, heavy charge/discharge cycling).
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Sources
- Orion XS 12/12-50A DC-DC battery charger - Troubleshooting & Support — Section 5, Error 1 - Battery temperature too high (Victron Energy)
Note: Confirmed for the Orion XS. The temperature-assumption behaviour applies when no external sensor is connected.
● Last verified 2026-06-29 · compiled from manufacturer documentation. Codes can vary by model year — always cross-check your unit’s manual.