Have HVAC Questions? Ask an HVAC Expert for Answers
This is a lockout code.
This may be a flame sensor issue.
The flame sensor rod is a small thin steel rod that is straight or L shaped and is usually located near the igniter or in the path of the burners. Locate it, remove it, and clean it with a piece of emery cloth or sandpaper very good.
Please hit ACCEPT if you are satisfied with this service. Thanks! Bonuses are greatly appreciated!