Why does my heating keep turning off? -HVACseer.com (2023)

The comfort your fireplace heater offers in winter is great for keeping a home cozy. However, your gas fireplace may not be as reliable as you might think. Sometimes it turns off for no apparent reason. Why does this problem occur? Stay with us! We're about to find out the answer we found.

This problem can occur on all heater models, especially if you have an older device. As far as we know, this could be caused by faulty components such as:

  • Zündflamme
  • thermoelectric couple
  • Oxipiloto
  • drip loop
  • gasventil

Stay with us! We want you to know more important information that we found during our investigation. We will cover the reasons why these faulty components contribute to this issue and more. Let's dive into them next!

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What causes my heating gas fireplace to light repeatedly?

A faulty fan heater can ruin your day, not just for you, but for your entire family. Therefore, finding the cause of this problem is crucial, especially during the cold months.

Possible causes of this problem are:

dirty indicator light

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A pilot light is a crucial part of a gas fireplace as it lights the gas fire. Of course, a dirty pilot light could also be to blame if the fire doesn't light or keeps going out. This could be a result of dust or other debris in the pilot light preventing it from igniting. Regular cleaning will help to avoid this problem.

faulty thermocouple

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Another important part of the gas fireplace is thethermoelectric couple;It works to maintain the ideal temperature in your fireplace. This is a bar sensor device; Generates electricity when it detects a thermal drop in the system. If there is a problem with the thermocouple, it is likely to affect the gas fireplace as well.

Defects of Oxypilot

Another important safety element of your Heatilator fireplace is the oxy pilot. It keeps track of the amount of oxygen in the system. In addition, it also turns off the fireplace when it detects that there is not enough oxygen in its tank. It cannot detect a gas leak, but an abnormal loss of gas is an indication of a leak.

It is necessary to check this from time to time as the gas used by your fireplace system is carbon monoxide. This can pose a serious risk to your health if you are exposed. according to aMessage, a gas fireplace is a possible cause of accidental gas poisoning in over 2,244 deaths in 2015.

drip loop

Moisture in the gas line contributes to dripping circuits. Unsurprisingly, the gas fireplace can go out if moisture or water is in the line. It affects the gas and correctly interrupts the ignition. This type of problem requires a qualified technician to fix it. We recommend that you contact yourHeatingInstaller and let them fix it for you.

faulty gas valve

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Finally, if your gas fireplace system still shuts down, there may be a problem with the gas valve. If it does not open correctly, there may be problems with the gas supply. This would make it difficult for the fireplace to remain lit during use. Check it and replace it if necessary to avoid this problem.

Does a fireplace work without electricity?

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A fireplace or stove with a permanent pilot light will continue to burn after a power failure because the pilot light is turned on manually. If you use a modern gas fireplace, you can use an ignition system. An ignition system requires electricity to create a spark and ignite the pilot light.

Today, some gas fireplaces feature IntelliFire or IntelliFire Plus ignition system technology. This means you use a backup battery to control and use the gas fire if there is a power outage. Additionally, IntelliFire systems require aof thed cell battery

Why does my heating keep turning off? -HVACseer.com (6)Why does my heating keep turning off? -HVACseer.com (7)

Check out these trusty D-cell batteries on Amazon.

IntelliFire Plus requires four AA batteries.

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Buy these long-lasting AA batteries from Amazon.

How do you properly clean a pilot light?

We know that a dirty pilot light is one of the main reasons your heater is running inefficiently. Fortunately, as part of our extensive research, we found a simple and easy cleaning solution, which we've detailed below:

  1. Start by turning off the gas valve or turning off the switch if you have an electric fireplace.
  2. Disconnect the gas nozzle and use any needle to remove any debris present in your orifice.
  3. Use a duster to loosen the remaining debris and remove it properly with a vacuum.
  4. Even a small soot formation on the thermocouple can significantly affect the operation of the fireplace. We also recommend a quick clean with steel wool or emery cloth. Wipe well with a clean, dry soft cloth to remove any dirt or grime.
  5. Turn the gas valve back on and follow our easy steps below to manually turn it on.

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Check out this duster on Amazon.

How do you light the fireplace stove pilot light again?

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The advantage of a gas fireplace is that it is not necessary to look for dry wood, transport it and cut it. It's an easy way to quickly warm up a living room or other area in your home. Unfortunately, it can happen that your fireplace flame no longer burns. If you experience this issue, you may need to turn it back on manually.

Here is the simple process to safely reset the pilot light:

  1. First remove the glass covering your fireplace. Careful! the reignitionMinutesrequires that you always remove the glass cover from your fireplace.
  2. Locate the gas supply valve under the blind; usually comes in red or blue color.
  3. Open the valve by turning the handle parallel to the gas line.
  4. Locate the pilot assembly over the ignitor at the rear or bottom of the firebox.
  5. Now you can see the red or black power button. Press down to confirm that the pilot mechanism is operational.
  6. Locate the black and green valve switch marked "ON", "OFF" and "PILOT". Hold it and turn it at the same time until it lines up with the "PILOT" sign.
  7. Repeatedly press the red power button until the pilot light comes on.
  8. Wait at least five minutes and repeat the process when it is no longer on.
  9. After successfully lighting the pilot light, wait again approximately 30 seconds before slowly releasing the ignitor.
  10. Now you can replace the glass lid and turn the fireplace on and off with the remote control.

If the problem persists, first close the valve and call your nearest heater service center immediately.

Take a moment to watch this visual tutorial on how to relight your pilot light on YouTube:

How can I tell if my fireplace thermocouple is damaged?

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If your fireplace keeps blowing out the pilot light, the thermocouple sensor is usually the culprit. Checking the thermocouple with a multimeter is a good idea if the Check Engine Light keeps going out.

If the thermocouple is working properly, you should be able to read 30 to 40 volts. You must perform this test with a helper using a multimeter tester to keep the pilot light alive.

Follow us below to properly test your thermocouple and find out if it is failing or not:

  1. Unscrew the thermocouple from the bracket that holds the gas valve.
  2. Set your multimeter accurately to get the voltage reading.
  3. Light the pilot light and hold the gas control knob in the on position to allow it to burn.
  4. Allow the probe to warm up for approximately one minute.
  5. Place one multimeter probe on the clamp and the other probe on the thermocouple rod.
  6. If the reading is less than 25 volts, your thermocouple is likely to be faulty. If not, it must be replaced.

Note: it isMinutesthey are best performed by a qualified technician. We recommend consulting a specialist to ensure the quality of work.


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Your heater or any type of heat source is essential during the severe cold months. As a homeowner, it's important to know at least the basic preventative measures on how to deal with this particular problem. Knowing what is causing your heater to keep turning off will determine how to treat and fix it for good.

Sharing this important information with you will ensure your heater is working efficiently. Did you like reading our article? Be sure to check out the other helpful topics below!

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