Wall Furnace Pilot Light Will Not Stay Lit

Thermocouples detect pilot lights by sensing the heat they produce.

Wall furnace pilot light will not stay lit.

This started occurring after i did some gas plumbing and had to relight the pilot. Flame sensors can go bad and occasionally need to be replaced. The thermocouple detects the pilot light via sensors. It may try a few times before giving up altogether.

In this hvac training video i show up close how the thermocouple pilot light and gas valve work on a water heater furnace fireplace as well as other ap. Check the thermocouple your furnace s thermocouple if it works normally checks to see whether the pilot light is on or off. The flame sensor tells your furnace that the gas is lit. If your pilot light won t stay lit the thermocouple is very likely the culprit.

This pilot light may not always stay lit due to a variety of issues that may affect the gas supply or ignitor. I suspected the thermocouple and replaced it but this didn t fix the problem. Without this device your furnace would simply continue to allow gas to flow into your home even when the pilot light was out. You see your furnace light the pilot when your thermostat calls for heat but then it quickly shuts off without lighting the burner.

Pilot light won t stay on. 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. The thermocouple is the copper rod the pilot flame directly hits. The pilot won t stay lit on my furnace when i release the button it just goes out.

When the pilot on your wall furnace does not stay lit your furnace won t heat. I ve used this furnace for over 15 years without replacing the thermocouple. An operational pilot light in your furnace means safety from the possibility of a gas leak. If your furnace s pilot light won t stay on the furnace won t work.

Poor flame sensor. Read on for reasons why and what you can do to fix it. A number of reasons can cause the wall furnace to not light including a damaged thermocouple a clogged pilot. If the pilot light will not stay lit it needs to be fixed asap to supply heat to your home and for safety reasons.

Some common causes include issues with the thermocouple and pilot tube. 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.