1600
Easy Fix
Generac · Standby Generators
Low battery voltage or charging circuit alarm.
Quick Answer
Error code 1600 on your Generac Standby Generators means: Low battery voltage or charging circuit alarm.. This is usually fixable — see the step-by-step guide below.
Affected Models
Applies to all models
Likely Causes
How to Fix It
1
Measure battery voltage at rest.
2
Clean and tighten battery terminals.
3
Confirm charger output is within spec.
4
Replace weak battery if needed.
5
Re-run exercise cycle and verify alarm clears.
Pro Tip
This is a common issue that most users can resolve without specialized tools. Try the first step before moving on to more complex solutions.
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