Patio heater won’t stay lit

Patio heater won’t stay lit. Mostly the lack of propane in the Patio propane heater is the cause of it. The thermocouple may have dirt inside that’s causing it.

The clogs in the path of propane are causing the heater to turn off. The wind may be turning the heater off.

I had enough of the propane heater when it wouldn’t stay lit. I wanted to use the heater, but it had to turn off, which made me angry. The heater wouldn’t let e heat myself or anything as it just wanted to shut down.

Having a propane heater at that time was a regret, but I preferred a propane heater because of the heating. The heating of the propane heater was better.

I wanted to fix my own heater rather than buy a new one as the old heater was a gift. I fixed the propane heater by checking everything.

Patio heater won’t stay lit

Having a propane heater that provides constant and proper heat is the best a sits better than an electrical heater, especially if the heater is manufactured by Patio.

The heater performs the task of heating amazingly. But sometimes, the propane heater doesn’t stay lit.

A propane heater not staying lit is actually a pretty common issue. There are several reasons why the heater gets extinguished.

The reason may be that the propane is not complete or impure, or there are faults in the heater making the heater get extinguished a lot.

Low propane

low propane

The most common reason why any propane heater doesn’t sit lit is because of the fuel. The supply of power or fuel to the heater is an important thing.

The furl is actually the thing keeping the heater lit. Your heater won’t only not stay lit, but it may not even turn on if there is a lack of fuel.

As we are talking about the propane heater, then the fuel here in the heater is also propane.

Without propane, the heater won’t stay on, and it won’t even turn on sometimes when the propane is too low.


The propane being low is pretty common as fuel burns up or runs out pretty fast, especially in heaters. The propane problem is not a problem as you thought.

You just need propane to make the heater keep running. Just buy the suitable propane tank from the seller that matches your heater, or any propane would work.

You can connect the tank to the heater after removing the old one, or you can take the old tank and get it filled.

If you have a supply of propane through something else, then you should make that thing have enough propane for your heater.



If you think that the propane is not the problem and you have enough propane to keep your heater, then there can be something else wrong with your heater.

The propane tank may be full, but it may not be reaching the heater from there. The reason behind the propane not reaching the heater is pretty common.

The propane passes through lines and reaches the igniter or the place it should be. Sometimes the one through which the propane needs to pass has clogs in them, and so you can not use those lines to transfer anything.

The clogs are probably not full because the heater is not staying lit rather than being ignited. However, your heater may not even ignite if there are clogs in the tank that completely stop the flow.

Getting the propane tank and the line through which it passes clogged is pretty common. The propane lines get clogged because of the environment and the residue left by the propane.

Your heater won’t stay lit until the partial or the full clogs get cleared. Partial clogs will sooner develop into complete clogs and cause a further problem, so read the fix.


The only thing that you can do to get the propane to reach the igniter completely is clear the clogs in the propane lines.

The way to clear propane lines is to use a chemical that is made for cleaning the propane line or use natural homemade remedies to clear the lines.

You need to remove the supply of propane before cleaning and remove it.

Then reach the ignition assembly. Loosen the orifice and use a pointy thing to clear the clogs in the pilot tube. Remove all the material clogging the pilot tube to get a stable flow for the heater.

Thermocouple issue

thermocouple issue

If you have some other issue in the heater that’s not letting your heater stay lit, then you probably have a thermocouple issue. Pato heaters are commonly known because of their issue with the propane hearer.

The thermocouple acts as a sensor in the propane heater. It makes sure that the device has fallen to start and run the heater or keeps it running smoothly. Your heater may have thermocouple issues as well.

One side of the thermocouple is present at the gas control, while the other end of the thermocouple is present elsewhere. You will find the thermocouple end at the burner of the heater.

The thermocouple gets faulty because of dirt as well. The dirt in a thermocouple is like position, and it stops the working of the thermocouple slowly at first.

Then the thermocouple completely stops functioning, making the heater not stay working.


Follow the propane line and see if there is a problem with the thermocouple. The thermocouple will be a bit hidden sometimes, so you need to locate the thermocouple depending on your heater.

After finding the thermocouple using your heater’s guide or following the lines, cleaning the thermocouple is the only option.

You need some abrasive to clean the heater. Using sandpaper is the best option to clean the thermocouple. Use any abrasive you find to clean the thermocouple and make sure that it’s clean. Always let the heater cool down before cleaning or checking it.

Size issue

size issue

If the thermocouple was not your problem and you have already filled the propane tank, the size may be your problem.

The size which causes the problem is the size of the flame, or rather the burner flame.

The burner flame heating issue can be in different sizes, and that size affects the burning of the heater a lot. Your heater may not light, depending on the size of the flame.

The size usually affects the heater when the flame is too small. Too small a flame won’t ignite the heater sometimes. Check the thermostat and see the color.

It should match the guide of your heater. The flame color is usually blue, and the tip of the flame is yellow. The flame should be enough to inundate the thermocouple.

This causes the heater to stay warm and keeps the heater lit. If you have a small burner flame, then read the fix.


The flame is caused by the thermocouple and the pilot. If the flame is too small, then they are at fault.

There can be clogs in both the thermocouple and the pilot of the heater. Having a thermocouple will only do you good when it’s working or the heater is useless.

If the heater has a clogged thermocouple and the pilot is also clogged, then you should clear the clogs.

The way of clearing the thermocouple is in its point, and use a similar method to clean the pilot of the heater and see if the heater works.



The most uncommon cause of the heater not staying lit is the weather, and this only affects the heating if you have placed the heater outside.

If you have the heater outside, then you may want to change its position. The weather that affects the heater and stops it is windy weather.

Wind will blow from all directions, and eventually, the gas pressure won’t be enough to keep the heater lit. The wind blows and will turn the heater off again and again.

If your heater is outdoor, then this problem is most likely the core of the heater issue.


The fix to having your heater getting stopped by the wind is to place the heater indoors.

If you don’t want the heater inside, then stop the air from blowing the pilot of the heater off. Place barriers or things that are not flammable around the heater.


If you have a heater that is not staying lit and it works on propane, then you should learn the reasons why the heater doesn’t stay lit.

The reason like the wind and the reason like the low amount of propane are all te causes that you need. The explanation is above. Thanks for reading!

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