Why does my propane fireplace keep shutting off?

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 gas fireplace turn off and on by itself?

Bad Thermo Couple or Thermo Pile



A thermo couple is a sensor device that detects heat and permits the pilot light to stay lit. One of these devices could have gone bad or may have shorted out, causing your fireplace to turn shut down or turn back on at random.

How do you clean a thermocouple on a propane fireplace?

How to Clean the Thermocouple in a Gas Fireplace

  1. Turn off the fireplace gas valve and remove the front panel from the fireplace.
  2. Find the thermocouple, which is located next to the pilot light and looks like a small straight pipe.
  3. Use a can of compressed air to gently blow away any dust and dirt from the thermocouple.
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Why does my propane fire table keep going out?

It may sound obvious but be sure to check fuel level in the tank. Turn the valve off and check the fuel; low levels can hinder a strong flame or contribute to a sputtering flame. The pilot tube might also be blocked with dirt or debris of some sort and a thorough cleaning usually solves the problem.

Why does my gas fireplace shut off after a few 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.

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

Thermocouple Replacement – $20-$150 Calling a professional plumber to install a new thermocouple should only be up to $150. If you do the work yourself, you will only pay the price of the part which is about $20.

Should I leave my gas fireplace pilot light on?

Leaving the gas on keeps this compound moving out of the tubes. Keeping the pilot light on will also keep moisture out of the unit and in turn, help prevent corrosion. … As you can see, it’s probably best in most cases to extinguish the pilot light in your gas fireplace during the months when you don’t need heat.

Can you clean a thermocouple?

The best way to clean your thermocouple is to use either a piece of steel wool or the coarse side of a sponge to gently clean off any soot or other remnants. You can use a pencil eraser to clean between the threads of the screw that connects the thermocouple to the control valve of your system.

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How do you bypass the thermocouple on a propane fire pit?

To bypass the thermocouple:

  1. Move the tilts switch wire aside.
  2. Remove your thermocouple from the heater using an 8mm wrench.
  3. Pull the valve housing aside using your 13mm socket wrench. …
  4. Remove the valve using your pliers. …
  5. Put your thermocouple back into position.

Why does my fire keep going out?

The ‘Fire Triangle’ taught us that fire needs three things to burn: oxygen, heat and fuel. If one of these is missing, it’s likely that your log burner will keep going out. … While the most common causes of log burners going out are insufficient oxygen, fuel or heat, stoves also rely on a properly functioning chimney.

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