The generator displays an Overspeed 1600 error code.
Environment
This article applies to Generac air-cooled home standby generators.
Causes
This code can be set off when your controller does not detect the correct engine speed. Diagnosing the causes of engine speed issues can be involved and require accessing components that could cause harm to the owner or generator. Generac recommends contacting an authorized service dealer for assistance. See the How Can I Find a Generac Service Dealer in My Area? article for more information.
Troubleshooting
Fluctuating speed - If the generator is audibly fluctuating in speed, try running the generator without a load to determine if something in the house is pulling irregularly or too much power. If the engine speed issues continue without a load, consider the maintenance steps below or contact a dealer for further diagnosis.
In some instances, checking user-serviceable components and performing recommended maintenance can temporarily or permanently resolve engine speed errors.
