Read the manual thoroughly and understand all of the instructions, cautions, and warnings before using this equipment. If any section of the manual is not understood, contact your nearest authorized dealer, or contact Generac Customer Service at 1-888-436-3722 (1-888-GENERAC), or www.generac.com with any questions or concerns. 

Performing a Hard Reset on a Home Standby Generator System

The process of performing a Hard Reset on a Generac Home Standby Generator removes all power from the generator's control panel. Performing a hard reset may help resolve temporary control panel errors and issues. 

Note: Error codes usually do not require a hard reset to clear. See the How Do I Clear an Error or Alarm Code On My Home Standby Generator? article for more information.

A hard reset may resolve these symptoms:

• A controller with a blank display
• An unresponsive controller
• A Controller Displaying A “Not Activated” message
• An alarm that does not clear
• A controller displaying unintelligible characters or symbols
• “Model Ident Problem – Fix Harness Resistor” messages

Other error codes indicate that an issue is present that must be resolved before the error code will clear. For a full list of error codes and troubleshooting, see the Where can I find a list of error codes for my generator? article.

Hard reset procedure

Video Instructions

Hard reset written instructions

1. Turn the generator control panel to the OFF position. (Fig. 1)



2. Lift the rubber flap and remove the 7.5 amp fuse from the controller. (Fig. 2)



3. Disconnect the battery starting with the negative cable first, then the positive cable.

4. Locate the service disconnect and turn it to the OFF position. The disconnect is inside the transfer switch for service entrance-rated switches (Fig. 3). For non-service entrance-rated switches, the service disconnect will be in the main panel (Fig. 4) or a standalone box (not shown).





5. Then, in this order: connect the battery, positive cable first, and negative cable last. Then replace the controller 7.5A fuse, and the Install Wizard should appear. Lastly, turn the service disconnect breaker back to the ON position. The hard reset is now complete.

If issues persist, contact a local Generac certified technician to further troubleshoot the error message or controller issue. See the How Can I Find a Generac Service Dealer in My Area? article for more information.