Generac Guardian 24kW Underspeed
What it means: Listed as an alarm. The manual gives no specific description. Alarms cause the generator to shut down.
What to do
Unless correctly trained to correct and clear alarms, contact an IASD or trained service technician. To clear the message, press OFF on the controller, then ENTER.
When to call service
The manual directs you to an authorized Generac service dealer for this code if the steps above do not clear it. The unit stops or will not start until the cause is cleared.
Source: official Generac manual, page 26, read . Summary of the manual, not a reproduction.
Models this manual covers
Generac Guardian 24kW, Generac Guardian 22kW, Generac Guardian 26kW, Generac Guardian 18kW, Generac Protector XG 48kW, Generac Protector XG 40kW, Generac EcoGen 15kW, Generac Protector XG 80kW, Generac Protector 20kW Diesel (RD02025).
Other Guardian 24kW codes
Questions
What does Generac Underspeed mean?
Listed as an alarm. The manual gives no specific description. Alarms cause the generator to shut down. (Generac manual for the Guardian 24kW, page 26.)
How do I fix Generac Underspeed?
Unless correctly trained to correct and clear alarms, contact an IASD or trained service technician. To clear the message, press OFF on the controller, then ENTER. The manual says to contact an authorized service dealer if it continues.
Fuel, gas and electrical work on a standby generator is for qualified technicians; follow the safety section of the manual. All 54 Guardian 24kW codes →