Why does my oil furnace pilot light keep going out?

Why does my oil furnace pilot light keep going out?

A faulty, misaligned, dirty, or damaged thermocouple is often the culprit behind your pilot light going out. The thermocouple is an automatic safety shutoff device that prevents the gas valve from opening if the pilot light is out.

Why does my oil furnace turn off after a few minutes?

If your furnace turns off after a few minutes, there is a good chance it is caused by a faulty or dirty flame sensor. This vital component is designed to keep an eye on the gas burner. When it cannot sense that burner, the furnace runs then shuts off and starts again.

Why does my pilot light keep going out after replacing thermocouple?

If your water heater pilot won’t stay lit even after replacing the thermocouple, you most likely have a faulty gas control valve. It is a sign that the valve is failing to open and allow gas to flow to the pilot. You could also be dealing with a tripped or faulty thermal switch.

Why does my furnace turns off before reaching temperature?

A lack of airflow can cause your furnace to stop heating before reaching the set temperature. Ensure there is nothing impeding airflow around your furnace, within your furnace and through your ducts. Check that registers are open, no ducts are damaged or crushed and replace your furnace filter.

Why is my furnace kicking on every 10 minutes?

Bad Thermostat: If your thermostat has a problem, it can cause your furnace to run cycles that are either too long or too short. If the thermostat is sensing the incorrect temperature and not sending a cut-off signal soon enough, or if the battery is dying, your thermostat can cause your furnace to run erratically.

How do I know if my thermocouple is broken?

If you can’t get the flame to light at all, and you’re sure the gas is on, there’s probably an obstruction in the pilot tube. If the flame lights and goes out when you release the gas control knob after holding it in for the recommended 20 to 30 seconds, that’s the sign of a thermocouple malfunction.

How do I clean a thermocouple?

Yes, you can clean a thermocouple, but the task must be done with a light touch. Remove the thermocouple from the process assembly, using a steel wool or emery cloth, lightly clean the tip removing any build up.

Why is my furnace pilot not staying lit?

Your Furnace is Overheating.

  • You Have an Old Furnace.
  • The Thermostat is Malfunctioning.
  • Your Furnace has a Dirty Flame Sensor.
  • The Furnace Igniter/Pilot Light is Damaged.
  • Your Furnace has a Defective Draft Inducer Motor.
  • The Furnace’s Thermocouple is Broken or Malfunctioned.
  • The Furnace’s Condensate Pan is Full.
  • The Blower Motor is not Running.
  • Why pilot light will not light furnace?

    If your furnace’s pilot light goes out after a few hours, the problem is probably with the draft positioning. The draft’s position can get affected while installing the thermocouple in the furnace. If this happens, excessive air will flow into the furnace, eventually causing the pilot light to go off.

    How to fix a furnace pilot light?

    – Remove the pilot tube first – Rub a piece of sandpaper on the tip of the pilot orifice – Use a can of compressed air in the points where dirt is most likely to accumulate – Use a thin, soft-bristled brush to reach every tiny nook of the orifice and burner

    Why does pilot light keep going out on gas furnace?

    The pilot light needs a strong flow of gas to make a strong, steady blue flame that the thermocouple can sense. But if the orifice is dirty or restricted, the pilot light won’t light properly. Which means the thermocouple will shut off the gas flow to your furnace as a safety measure.