What happens if the pilot light goes out on a furnace?
What happens if the pilot light goes out on a furnace?
If your pilot light repeatedly goes out, this is a likely culprit. If this flame sensor should fail, gas will continue to flow even after the pilot light has been extinguished, causing a safety hazard, and requiring immediate repair.
Will a furnace turn on if pilot light is out?
So basically your pilot light is responsible for combusting your fuel source, which is how your furnace creates heat. If it goes out, the safety features of your furnace will not allow it to release gas into the burner, meaning that the furnace will not run at all.
Is it bad if the pilot light goes out?
This is because all modern gas appliances with pilot lights have a fail-safe device that closes off the gas to the appliance in the case when the pilot may go out. If the pilot light goes out for any reason, the current stops, the valve closes, thus preventing any gas from leaking.
What causes furnace pilot to go out?
Thermocouple Malfunction The thermocouple on your heating system is a safety device that determines whether or not your furnace pilot light is lit. A thermocouple that is dirty or malfunctioning will often shut off your gas supply in error, causing the pilot light to go out and your furnace to stop working.
What do I do if my pilot light goes out?
How to Relight a Pilot Light
- Turn off your appliance at the power switch or thermostat.
- Find the gas valve control knob and turn it to select “pilot.”
- If pilot light controls are sticky, do not apply force or use oil.
- Press the red button while simultaneously holding a match to the pilot burner.
Why does my furnace not turn on?
The pilot light or ignition sensor is usually the most common issue when your furnace will not ignite. This is typically the problem if you can hear your furnace click on but it does not fire up. First, you need to turn off the gas to the furnace. Then, remove the front panel to find the ignitor or ignition sensor.
Does gas leak if pilot light goes out?
When the pilot light goes out, it does not leak carbon monoxide gas. Some of the possible serious reasons for pilot lights to go out include loose or broken gas valves, thermocouples or heat exchangers, faulty venting, low gas pressure, or high winds.
Why does my furnace pilot keep going out?
If your furnace pilot light keeps going out, it’s likely you have a broken thermocouple in your gas furnace. The thermocouple is a rod that comes into physical contact with the flame in your system. This component will deactivates the gas when the pilot light goes out.
Why is my furnace pilot not staying lit?
The most common reason the furnace pilot light won’t stay lit. Bad Thermocouple. A furnace thermocouple is a safety feature that regulates gas flow to your system based on whether the pilot light is on. In simple terms, the thermocouple checks to see if your pilot light flame is lit and turns off the gas flow if it senses that your pilot light is off, so you don’t have gas building up in your home.
Why does pilot light keep going out?
Why Does My Pilot Light Keep Going Out. The number one reason why the pilot light keeps going out is the thermocouple. Either the thermocouple is going bad or it is dirty and needs to be cleaned. Thermocouples work by producing a small amount of voltage when it is heated. This is the pilot flame that provides the heat. Nov 23 2019
Where is the furnace pilot light located?
The pilot light is typically in the bottom of the furnace near a small knob. In most cases, this knob has three distinct settings: “Pilot,” “Off,” and “On.”.