A pilot light is an essential component of a furnace. When functioning correctly, the pilot light provides a constant flame that ignites the main burner when the furnace is turned on. However, if the pilot light goes out or fails to stay lit, it can cause the appliance to malfunction and even pose safety risks. This blog offers a step-by-step guide on how to fix a broken pilot light.

Safety First

Before attempting any repairs, ensure that all safety precautions are taken. Turn off the gas supply to the furnace and allow any residual gas to dissipate. If you smell gas or suspect a gas leak, do not attempt to fix the pilot light and immediately call a professional.

Inspect the Pilot Light Assembly

Begin by locating the pilot light assembly on your appliance. It usually consists of a pilot light tube, a thermocouple, and an ignition source (such as a spark igniter or push-button igniter). Check for any visible damage or debris that could be obstructing the flow of gas or the ignition process.

Clean the Pilot Light Tube

A common reason for a pilot light to go out is a clogged pilot light tube. To clean the tube, use a small brush or compressed air to brush away any dust. Make sure the tube is clear and free of obstructions before proceeding.

Check the Thermocouple

The thermocouple is a safety device that monitors the pilot light and shuts off the gas supply if the flame goes out. If the thermocouple is faulty or misaligned, it may prevent the pilot light from staying lit. Ensure that the thermocouple is positioned correctly, with its tip in the pilot light's flame. If necessary, adjust the position of the thermocouple or replace it if it appears damaged or worn.

Relight the Pilot Light

Once the pilot light assembly is clean and properly positioned, turn the gas supply back on and attempt to relight the pilot light. Follow the manufacturer's instructions for your specific appliance, which may involve using a spark igniter or a long-reach lighter. Hold the pilot light button down for at least 30 seconds to allow the thermocouple to heat up before releasing it. If the pilot light stays lit, the problem has likely been resolved.

Seek Professional Help

If the pilot light continues to go out or fails to stay lit after attempting these steps, it may be time to call a professional technician. There could be an underlying issue with the appliance or gas supply that requires expert attention.

In conclusion, fixing a broken pilot light can be a relatively simple process if proper safety precautions are taken and the issue is correctly diagnosed.

For more information, contact a local company, like Parker Heating & Air Conditioning.