Why does my gas fireplace shut off after 5 minutes?

If you get dust in the pilot assembly and the pilot needs to be cleaned out, it produces a “lazy” flame, which will be disturbed by the draught of the main burners. The flame lifts away from the thermocouple and causes the temperature on the tip of the thermocouple to drop. This, in turn, makes the gas valve shut off.

Why does my propane fireplace keep shutting off?





One of the main reasons why your gas fireplace keeps shutting down is likely due to the pilot light. This is an integral part of a gas fireplace, that kick starts the gas fire. When you turn on the fire, the pilot light button needs to be held in so that it can light the fire.

Why does my gas fireplace go out after a while?

A common problem with gas fireplaces lies in the components called the ignition assembly. When a fireplace refuses to remain lit, there’s probably an issue in one of the several pieces that make up the ignition assembly, which are: the pilot light assembly, pilot tubing, thermocouple, and thermopile.

Why does my fireplace flame keep going out?

This can be an indication that your fireplace thermocouple is either bad or worn out. However, if your pilot is lit but the gas fireplace isn’t, then there’s probably a problem with your thermopile.

How do you fix a gas fireplace that won’t stay lit?

Quote from the video:
Quote from Youtube video: It won't it takes a while to push the gas through so don't be surprised if you've got to hold it for a while. So nothing is happening i'm getting spark.

How do I know if my thermocouple is bad on my gas fireplace?





Quote from the video:
Quote from Youtube video: You should replace the thermocouple. So to recap the readings to look for are 8 to 30 millivolts. And if the readings are less than 7million. You should replace the thermocouple.

How do you troubleshoot a propane fireplace?

How to Troubleshoot a Propane Fireplace

  1. Wearing gloves, ensure the valve on your propane tank is open. Open the valve by turning it counterclockwise until it will not turn anymore.
  2. Ensure the valve for your fireplace is open. …
  3. Push the igniter. …
  4. Relight the pilot light.


How much does it cost to replace a thermocouple on a gas fireplace?

between $150 and $250



When replacing a thermocouple or thermopile with the help of a professional, you can expect to pay between $150 and $250.

How long does a thermocouple last on a gas fireplace?

Thermocouples can last up to 10 years if properly installed and maintained, while furnaces can last 15-20 years, although either may wear out sooner in multifamily units.

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.

Can I replace thermocouple myself?



It’s easy to replace and a new one costs $5 to $10. Rather than trying to unfasten the thermocouple inside the water heater’s burning chamber, it’s easier to remove the whole burner and thermocouple assembly.

Does cleaning a thermocouple help?

Remove the thermocouple from the process assembly, using a steel wool or emery cloth, lightly clean the tip removing any build up. Cleaning a thermocouple is not a fix for an issue, such as inaccurate readings.

How do you dust a thermocouple?

You’ll need a lint-free cloth, some emery cloth sandpaper, and a screwdriver. You should be done in under 20 minutes. Whatever you do, never use any cleaning products or liquid of any kind. All you need to do is scrape the thermocouple clean and then dry-wipe the residue.

How do you bypass a thermocouple?

Quote from the video:
Quote from Youtube video: More waiting for the stupid thermocouple. To light now. That's how you bypass it oh and let me show you which one this is just one of us here is let me show you the parts.