Good maintenance ensures that your furnace operates efficiently and safely throughout the colder months. One critical component that often goes unnoticed yet requires attention to keep your HVAC system operational is the flame sensor.
In this article, you’ll learn how to clean the flame sensor and safely reinstall it for a highly functional furnace.
Key Takeaways:
- Dirt or carbon deposits can affect the flame sensor’s ability to function hence requiring a cleanup at least once a year.
- Cleaning your furnace’s flame sensor is a straightforward task that can significantly impact the efficiency and safety of your heating system.
Table of Contents
What Necessitates Furnace Flame Sensor Cleaning?
Over time, the flame sensor becomes coated with dust, soot, or other debris from the burning process. This accumulation can insulate the sensor and hinder its ability to detect the flame.
Here are signs that may indicate a dirty flame sensor:
How to Clean a Furnace Flame Sensor
1. Turn Off the Furnace
Safety first! Ensure the furnace is off and completely cool before you start working. It’s also advisable to turn off the unit’s power switch.
2. Remove the Flame Sensor
Refer to your furnace’s manual to find the flame sensor. It is usually mounted near the burner assembly. Use the nut driver or socket wrench to remove the screws that hold the flame sensor in place. Carefully pull it out to avoid damaging any wires or components.
3. Clean the Sensor
Gently clean the rod with a fine abrasive cloth or soft-bristled brush. Rub it lightly to remove any buildup, taking care not to damage the rod. You can use an emery cloth for tougher deposits. After the cleanup, wipe the sensor with a clean cloth to remove any dust or residue.
4. Reinstall the Sensor
After cleaning the flame sensor, reinsert it back to its position and secure it using the screws you removed earlier.
5. Test the Furnace
Turn the power back on and start the furnace. Check for normal operation and ensure the furnace stays on and is heating properly.
How Often to Clean a Flame Sensor
It is recommended to clean your furnace flame sensor once a year as part of regular furnace maintenance. However, if you notice any of the above signs with your furnace’s operation, it might be necessary to clean the sensor more frequently. Regular cleaning helps ensure the longevity and efficiency of your furnace.
Contact Luxury Heating & Air for Efficient Furnace Repair Services
Is your furnace making unusual noises or just won’t start? Call Luxury Heating & Air. Our furnace repair experts will diagnose and repair your unit in record time so you can stay warm and comfortable in your home. Contact us today to request a service quote.