What Causes Furnace Ignitor Failure? How To Fix It?

One of the most common issues that can occur with a furnace is ignitor failure. The ignitor is responsible for providing the spark that lights the gas in order to heat your home. When it fails, the furnace will not be able to produce heat.

There are several reasons why an ignitor may fail, such as dirt and debris buildup, age, or corrosion. Also-

1. Air filter may be clogged: The air filter is responsible for protecting the furnace’s blower and other components from dirt and debris. If the air filter is clogged, it can restrict air flow, causing the furnace to overheat and the ignitor to fail. To fix this, simply replace the air filter.

2. Thermostat may be set too low: If the ignitor fails to ignite the gas, it could be because the thermostat is set too low. When the thermostat is set too low, the furnace doesn’t receive the signal to turn on and heat the home. To fix this, set the thermostat to a higher temperature.

3. Gas valve may be faulty: The gas valve is responsible for supplying gas to the furnace. If the gas valve is faulty, it can prevent gas from reaching the furnace, causing the ignitor to fail. To fix this, replace the gas valve.

4. High Voltage: The furnace ignitor is a high-voltage component. If the voltage is too high, it can cause the ignitor to fail. To fix this, have an electrician check the home’s electrical system.

5. Blower motor may be damaged: The blower motor is responsible for circulating air throughout the furnace. If the blower motor is damaged, it can prevent air from reaching the ignitor, causing the ignitor to fail. To fix this, replace the blower motor.

6. Furnace may be too old: Over time, furnaces can experience wear and tear that can cause the ignitor to fail. If your furnace is more than 15 years old, it may be time to replace it.

7. Dirty flame sensor: The flame sensor is responsible for detecting whether or not the flame is present. If the flame sensor is dirty, it can prevent the ignitor from igniting the gas, causing the ignitor to fail. To fix this, clean the flame sensor.

8. Improper installation: If the furnace wasn’t installed properly, it can cause the ignitor to fail. To fix this, hire a professional to install the furnace.

Also, another possibility is that there’s something wrong with the gas line leading to your furnace. If there’s a leak or blockage, then the ignitor won’t be able to do its job properly.

If you’re having trouble with your furnace ignitor, then it’s best to call a professional for help. They’ll be able to diagnose the problem and get your furnace up and running again in no time.

Learn More: Carbon Monoxide Safety Tips For Homes With Furnaces

Bad Furnace Ignitor Symptoms

If your furnace ignitor isn’t working properly, there are a few things you might notice.

Furnace won’t turn on: If your furnace doesn’t turn on at all, the most likely culprit is a bad ignitor.

Furnace turns on, then turns off: If your furnace turns on for a few seconds and then shuts back off, it could be due to a bad ignitor.

Pilot light won’t stay lit: If your furnace has a pilot light, and that pilot light won’t stay lit, it’s a sign that you have a bad ignitor.

Furnace turns on, but doesn’t produce heat: If your furnace turns on, but doesn’t actually heat your home, it could be a sign of a bad ignitor.

Clicking noises: If you hear clicking noises coming from your furnace, it could be a sign of a bad ignitor.

This is another sign that the ignitor isn’t working properly. If you notice any of these symptoms, then you should call a technician to come and take a look at your furnace.

The furnace Ignitor is Not Working

If your furnace’s ignitor isn’t working, it could be for a number of reasons. The most common reason is that the ignitor has simply worn out and needs to be replaced. Other possible causes include loose electrical connections, dirt or debris on the ignitor or a problem with the gas valve.

If you suspect that your furnace’s ignitor is the problem, the first thing you should do is check for any loose connections. If everything looks tight, then you’ll need to take a look at the ignitor itself. If it’s covered in dirt or debris, give it a good cleaning.

You may also want to try gently tapping on the ignitor to see if that gets it working again. If neither of those solutions works, then it’s likely that you need to replace the Ignitor. Fortunately, this is a relatively easy and inexpensive repair.

You can find replacement Ignitors at most hardware stores or online retailers specializing in HVAC parts and supplies.

Furnace Ignitor Lights But No Flame

If your furnace’s ignitor lights but there’s no flame, the problem could be with the gas valve. The gas valve is responsible for opening and closing the flow of gas to the burner. If it’s not open, gas can’t get to the burner and your furnace won’t heat your home.

There are a few things you can do to try and fix the problem yourself.

Check to make sure that there is power going to the ignitor. If there is, then check to see if the pilot light is lit.

If it isn’t, you’ll need to light it. Once you’ve done that, turn on the gas valve and wait for the ignitor to light. If it doesn’t, then you may need to replace it.

If you’re not comfortable working with gas lines, then you should call a professional to come to take a look at your furnace. They’ll be able to diagnose the problem and make any necessary repairs so that your furnace is up and running again in no time!

Furnace Not Igniting – How to Check and Replace Ignitor

The furnace Ignitor Glows and Then Shuts off

If your furnace ignitor glows and then shuts off, it could be due to a number of different issues. The most common cause is that the ignitor is dirty and needs to be cleaned. If the ignitor is clean and the problem persists, it could be due to a faulty gas valve or a problem with the electrical connection.

In either case, it’s best to call a qualified technician to diagnose and repair the problem.

How Long Should a Furnace Ignitor Last?

If your furnace ignitor is more than 10 years old, it’s probably time to replace it. Furnace ignitors typically last for about 15 years, but they can start to wear out after 10 years. If your furnace ignitor is starting to fail, you may notice that it takes longer for your furnace to start up.

You may also notice that your furnace doesn’t produce as much heat as it used to. Replacing a furnace ignitor is a relatively easy and inexpensive repair. If you have a warranty on your furnace, you may be able to get the replacement covered.

Even if you don’t have a warranty, replacing an ignitor is much cheaper than buying a new furnace. If you’re not sure whether or not your furnace ignitor needs to be replaced, ask a heating contractor to take a look at it. They will be able to tell you if it’s time for a replacement based on its age and condition.

How Do I Know If My Furnace Ignitor is Bad?

If your furnace is having trouble igniting, it could be due to a faulty ignitor. There are a few ways to tell if your furnace’s ignitor is bad and needs to be replaced. One way to tell is by looking at the ignitor itself.

If it’s cracked or damaged, then it will likely need to be replaced. Another way to tell is by listening to your furnace. If you hear clicking but no ignition, that’s another sign that the ignitor may be bad.

Another way to determine if your furnace’s ignitor is bad is by checking the pilot light. If the pilot light is on but the burner doesn’t ignite, that means the problem lies with the ignitor and not the pilot light.

Ultimately, if your furnace isn’t igniting properly, it’s best to call a professional for help diagnosing and fixing the problem.

Why is My Furnace Turning on But Not Igniting?

If your furnace is running but not igniting, there are a few possible reasons why. The most common reason is that the pilot light has gone out. If this is the case, you’ll need to relight it following the instructions in your furnace’s owner’s manual.

Another possible reason why your furnace might be running but not igniting is that the flame sensor needs to be cleaned. The flame sensor is a small metal rod that sits in front of the burner and detects whether or not there is a flame present. If it gets dirty, it can become faulty and cause your furnace to fail to ignite.

You can clean it yourself with a little bit of sandpaper or vinegar, or you can call a professional to do it for you.

Finally, if your furnace still won’t ignite after checking these two things, then it’s likely that there is an issue with the gas valve itself. This is a more serious problem that will require the help of a professional heating technician to fix.

How Do You Test a Furnace Ignitor?

If your furnace is having trouble igniting, there are a few things you can do to test the ignitor.

First, check the power supply to the ignitor.

Second, check for any debris or dirt that may be blocking the ignitor from sparking.

Third, test the resistance of the ignitor using a multimeter. If any of these tests reveal an issue with the ignitor, it will need to be replaced.

Finally

The most common cause of furnace ignitor failure is dirt and debris. Over time, the heating element can become coated with a layer of dust and dirt, which insulates it and prevents it from conducting electricity properly. In addition, the ceramic material that makes up the ignitor can break down over time, causing it to become less conductive.

If your furnace is having trouble starting, it’s important to check the ignitor for dirt and debris. You may be able to clean it yourself with a brush or vacuum attachment, but if the problem persists, you should call a professional for help.