3 Reasons Why Your Furnace Is Not Staying Lit and How to Solve It

3 Reasons Why Your Furnace Is Not Staying Lit and How to Solve It

For homeowners, one of the worst scenarios is when the furnace suddenly stops working in the middle of winter. This could be due to many reasons, which we will be covered in this post.
If you reside in Raceland, Galliano, or Lockport, LA, contact Martin’s Heating & Air Conditioning for expert assistance.

Reasons Why Your Furnace Is Not Staying Lit

Here are some common problems due to which the furnace stops its combustion process:

  • Dirty Flame Sensor: A flame sensor prevents unused gas from spilling inside your residence. It ensures the gas is burning appropriately and there is a flame.
    However, it might start to malfunction if it moves slightly from its position or if its surface is dirty. It is a rod-like structure in front of the burners and is on the opposite side of the igniter. Our experts recommend switching off the furnace before cleaning the flame sensor with a clean cloth.
  • Overheating Issue: There is a safety precaution in the furnace system instructing the furnace to shut down all operations if the internal temperature exceeds a fixed limit. It can be due to excessive workload, dirty air filters, or blocked air vents. Our experts suggest replacing the air filter and ensuring all the air vents are unblocked. It is best to reduce the workload of the furnace system to avoid an immediate shutdown.
  • Thermostat Malfunctioning: A thermostat can be a reason if your furnace has problems staying lit. It is best to replace the batteries and pull out the thermostat from its position to check issues with the wires. You can call us for a Heating Service in Galliano, LA, to resolve the thermostat issues.


It is best to let the experts deal with the issue if the problem persists. Contact Martin’s Heating & Air Conditioning, and our technician will be at your service to deliver an effective solution to fix the issue! Call us today!