Question about Procom QL300TYLA Heater

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Internal thermostat cuts off and blows out the pilot light. How to fix ?

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This unit may have two sensors at the pilot, a thermocouple that keeps the pilot on and a thermopile that allows the burner to ignite. If the pilot will not light, replace the thermocouple. If the burner goes out and the pilot with it, replace the thermopile. Heck as long as you have the unit open, replace them both. Cheap insurance.

Posted on Nov 13, 2009

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Just so happened to pass by your problem and we had same thing happen, not saying this will be your fix also but after looking for answers everywhere i lightly wire brushed off end of the part where the flame comes out ( with small wire brush) used an air can like for computers, lightly sprayed air in and aroud the flame tip area and presto had no problem any more. I spent more time trying to bypass the obvious easy answer and after 3 weeks of contemplating disassembly did the easy and glad i did, there was no disassembly...hope this works for you too...tommykamakazi

Posted on Nov 13, 2009


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Not sure I can help but will try. Sounds like you have a blockage in the pipe or jet and when it heats up it is choking. Best way to clean Propane and/or Gas heaters is to blow compressed air through the pipe. You may be able to just blow the air down the pilot light and main jet and it could fix the problem and clear the jet.

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I am not familiar with this heater but it sounds like it could be a blockage in the main gas line into the heater or perhaps a blockage to the pilot gas line and maybe starving for gas. Best bet first is to check the main gas line from the heater. Easiest way to do this is to remove it from the heater and blow it through with compressed air. Then try the heater again. If that doesn't fix the problem then you can try blowing compressed air down through the pilot line. Could be a little dirt creating a blockage there. Then try the heater again. If it still does the same thing then try removing the panels to expose the heater's piping. If you can remove the main pipe into the heater from the gas and blow compressed air through it it should clear any obstruction from both the main line and the pilot. If this doesn't work then I would think you have a more severe problem and will need to take it to your local Heater Repairer. Hope this helps.


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