Gas Furnace Pilot Light Won T Stay Lit

The thermocouple detects the pilot light via sensors.

Gas furnace pilot light won t stay lit.

The gas valve sends gas to the main burner s which is lit by the pilot light. To ensure our content is always up to date with current information best practices and professional advice articles are routinely reviewed by industry experts with years of hands on experience. The gas valve opens so gas can flow to the main burner s and be lit by the pilot light. The gas valve then opens and gas flows to the pilot burner.

They skip steps 3 4 and 5 and light the. A faulty thermocouple may arbitrarily determine that the light is off when you want it on and vice versa. Direct ignition furnaces do not have a pilot light. It won t stay on.

These furnaces skip steps 3 5 and instead light the burner directly. An electronic spark ignites the pilot light. This pilot light may not always stay lit due to a variety of issues that may affect the gas supply or ignitor. If you have a direct ignition furnace you won t have a pilot light.

Before conceding the cost of emergency repairs and calling an hvac professional read ahead for some of the most common reasons why your furnace pilot. When my pilot light wouldn t stay lit on my furnace i asked a few plumber buddies about the symptoms and they both said it was the thermo couple. Your furnace will still have a flame sensor but it will be over the burner s flame. Maybe the pilot stays on for a moment and the furnace attempts to fire but almost immediately shuts down.

The pilot light in your gas furnace supplies heat to your home. If the pilot light will not stay lit it needs to be fixed asap to supply heat to your home and for safety reasons there are numerous things that may make the pilot light on your furnace to not stay lit. Why does this happen. If the pilot comes on but it won t stay lit the thermocouple may be bad and that s probably the reason the pilot went out in the first place.

Servicing the pilot on modern gas furnaces modern furnaces tend to have an electronic igniter or a hot surface igniter and the pilot compartment is sealed so you couldn t light the pilot with a match. An operational pilot light in your furnace means safety from the possibility of a gas leak. The flame sensor tells the furnace that the pilot is lit. Furnaces of various kinds are gas powered and use a pilot light to supply heat to the unit including standard home furnaces and floor furnaces.

Some common causes include issues with the thermocouple and pilot tube. If your furnace s pilot light won t stay on the furnace won t work.