Honeywell L4064B2228 Fan and Limit Controller. 5 inch insert

Hi, there! Thank you for asking about the Honeywell L4064B2228 fan and limit controller. It is generally not recommended to adjust the settings on a furnace's fan and limit controller without proper training and understanding of the furnace's operating principles. Any changes to the controller settings could potentially affect the safety and performance of the furnace. If you are experiencing issues with your EnergyKing forced air wood/coal furnace, it is best to contact a qualified heating technician for assistance. They will be able to diagnose any problems with the furnace and recommend any necessary repairs or adjustments. We hope this information helps. Thank you for visiting PlumbersStock. We hope to hear from you soon. Have a great day!