aXis
Low Battery
Low battery
Electrical · Warning
Manual 100515 lights the red low-battery icon if battery voltage falls below 21.0 volts for at least 5 seconds while the engine is running, and turns it off if voltage rises above 22 volts. Those figures are what this manual prints (a 24-volt battery pair, not a 12-volt car battery). Voltage is not monitored while cranking, only while running. The manual says this icon does not shut the generator down. Only low battery and the maintenance icon are non-latching. Everything else red latches and shuts down.
Seen on: Champion home standby generators with the aXis controller covered by operator manual 100515. These are icon faults, not four-digit numeric codes.
Likely causes
- Battery or batteries not holding voltage while the engine runs.
- Charging system not keeping voltage above 22 volts.
Checks an owner can do
- Check the battery-charger indication and the condition of the batteries, following the battery maker's instructions.
- Do not treat 21 volts as a 12-volt battery spec. This page is quoting manual 100515.
When to call a pro
If the icon stays on, the charging circuit and the batteries need someone who can test them safely.
Source
Wording follows that document. Firmware can change a threshold. If this page and the manual shipped with your unit disagree, follow the manual.
What fixed mine
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Related Champion codes
https://generatorcodes.com/brand/champion/low-battery