Victron Error 1 fault: One phase shut down
Keep an eye on it
Urgency: medium
What it means
One unit in a multi-unit system switched off, so the others shut down too. It is usually caused by a low battery, overload or high temperature on another unit.
Likely causes
- Low battery
- Overload on one unit
- High temperature on one unit
What you can safely check
- Switch off or unplug heavy appliances (kettle, heater, geyser, pool pump) on the backup circuits.
- Let the battery recharge from solar or the grid before using heavy appliances again.
- If it keeps coming back, stop and call a qualified installer.
When to call a pro
If it doesn't clear on its own, happens often, or comes with burning smells, heat or noise, call a qualified installer.
Solar systems carry dangerous voltages. Only do the safe checks listed. If unsure, call a pro.
Source: Victron Energy – VE.Bus Error Codes (paraphrased)
Victron advises that this work be done by trained professionals.