Victron Energy Power Converter: “Error 33”
warning RV power converter problems
What it means
Input voltage too high. The DC input voltage feeding the charger has exceeded its safe limit, so the charger stops. It recovers automatically once the input voltage falls back into the allowed range.
Most likely causes
- Vehicle/source alternator or DC supply pushing voltage above the charger input rating common
- Voltage spike from another charging source on the same input common
- Incorrect 24 V source connected to a 12 V input model less common
Safe checks you can do yourself
- Measure the input (source) voltage with a multimeter and compare it to the charger's rated input range.
- Check for other charging equipment feeding the same input bus that could raise the voltage.
- Confirm the charger model matches the system voltage of the source.
How to reset / clear Error 33
- No manual reset required; the charger restarts automatically once input voltage drops to a safe value.
When to call a technician
If input voltage repeatedly exceeds the limit during normal engine running, have the alternator/charging source and regulation checked.
Applies to
Orion XS 12/12-50A DC-DC charger
FAQ
What does Victron Energy Power Converter code "Error 33" mean?
Input voltage too high. The DC input voltage feeding the charger has exceeded its safe limit, so the charger stops. It recovers automatically once the input voltage falls back into the allowed range.
How do I reset Victron Energy Power Converter Error 33?
No manual reset required; the charger restarts automatically once input voltage drops to a safe value.
What is the most common cause of Error 33 on a Victron Energy Power Converter?
The most likely cause is vehicle/source alternator or dc supply pushing voltage above the charger input rating.
Related · Victron Energy power converter
Battery temperature too high. The charger halts charging to … Error 21
Current sensor problem. The measured charge current is out o… Error 26
Terminal overheated. The power terminals are running too hot… Error 67
The charger is set to be controlled by a battery BMS but is … Error 119
Settings data lost. The charger cannot read its stored confi…
Sources
- Orion XS 12/12-50A DC-DC battery charger - Troubleshooting & Support — Section 5, Error 33 - Input voltage too high (Victron Energy)
Note: Confirmed for the Orion XS; the exact voltage threshold depends on the model and is not restated here to avoid copying manual figures.
● Last verified 2026-06-29 · compiled from manufacturer documentation. Codes can vary by model year — always cross-check your unit’s manual.