How much does it cost to replace a furnace thermocouple?
Cost to Replace a Thermocouple on a Furnace Replacing a thermocouple costs $150 to $250, mostly due to labor time. On older models without an ignitor, it checks to make sure your pilot light is lit. If it’s not, it’ll shut the gas off.
What does it mean when your furnace won’t stay lit?
Probably the most common issue when dealing with a furnace that will not stay lit or ignite consistently is a dirty flame sensor. The flame sensor acts as a communication vehicle with the circuit board and tells it when a flame is lit inside the furnace.
Why is the pilot light on my furnace not working?
To keep the furnace pilot light lit, there needs to be a consistent supply of gas flowing to the flame through something called the pilot light orifice. If this tube is clogged or dirty, there won’t be enough gas flow to keep the flame strong.
What should I do if my furnace won’t ignite?
If your problem is not with your gas line, see if your pilot light is lit, since your pilot light or ignition sensor is the most common culprit behind a furnace that won’t ignite. If this is your first time turning on your furnace this season, keep in mind that it may take a little extra time for the pilot light to turn on.
Why is the flame sensor on my furnace not working?
The flame sensor acts as a communication vehicle with the circuit board and tells it when a flame is lit inside the furnace. When the sensor gets rusty or dirty, it cannot properly detect the flame and causes the furnace to malfunction.
Why is the oil furnace not staying lit?
Probably the most common issue when dealing with a furnace that will not stay lit or ignite consistently is a dirty flame sensor . The flame sensor acts as a communication vehicle with the circuit board and tells it when a flame is lit inside the furnace.
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.
What would cause a furnace not to light?
A number of reasons can cause the wall furnace to not light, including a damaged thermocouple, a clogged pilot orifice and a disconnected gas supply.
Why is my furnace not staying on?
Malfunctioning Thermostat. If your furnace isn’t staying on, your thermostat may not be calibrated correctly. This means that the furnace thinks it has reached the desired temperature before it has, and therefore the furnace is turning off after running for a short time.
