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High Engine Temp

Generac Standby Generator

Severity: Critical

Source: OnlyErrorCodes.com — Every error code. One place.

Generac Generator High Engine Temp Alarm — Fix

What Does This Error Mean?

Generac High Engine Temp shuts down the generator to prevent engine damage. Let it cool for 15 minutes, then check cooling airflow, oil level, and cooling fins.

How to Fix It

  1. Let the generator cool

  2. Check for blocked airflow

  3. Clean the cooling fins

  4. Check the oil level and condition

  5. Check enclosure clearances

  6. Check the temperature sensor

Frequently Asked Questions

Why is my Generac generator overheating?

The most common causes are blocked cooling fins, restricted enclosure ventilation, low oil level, or running the generator at full load in high ambient temperatures.

Can I run my Generac in direct sunlight?

Generac generators are designed for outdoor installation but should be placed with adequate ventilation clearances. Providing shade while maintaining airflow clearances can reduce heat load in very hot climates.

How do I reset the high engine temp alarm on Generac?

After the engine has cooled and the cause is addressed, press RESET on the control panel. Return the selector to AUTO and monitor the next exercise cycle.