Question about Heating & Cooling

2 Answers

Pilot light goes out!


   I own a procom heater Serial # 3640534



The pilot light has a bit of a yellow flame.  Anyway, after the elements cycle the pilot light goes out. I think I hear a little click just as it goes out.  Do i need a new valve, thermocouple?


Posted by on

  • 3 more comments 
  • torrohnm Nov 25, 2007

    I own a Pro-com MN300TBA, serial # 3792661.
    Unit works for a while, suddenly pilot cuts out. Impossible to re-light while hot. After cools down everything works fine for about 10-15 min, then repeats.
    Electric igntion stopped working. Pilot needs to be lit directly. Unit is about one year old, second winter. Any thoughts?


  • maiello Dec 28, 2007

    Heater is one year old and the Pilot will start-up but after the unit calls for heat the pilot will start to lose the full flame and eventually goes out. Then when the heat goes off the pilot is out and can not start.

  • Anonymous Oct 03, 2008

    the same problem. Pilot light is on, gas flames start, blowers work fine but 10 seconds after blower/fan stops, pilot light goes out with a click noise.

  • Anonymous Mar 15, 2014

    Yellow flame in pilot light

  • Anonymous Mar 22, 2014

    pilot flame cuts off



2 Answers

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

Try cleaning the orifice . I use a twist tie wire off a loaf of bread . Careful, dont damage it .

Posted on Nov 10, 2007

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 20 achievements.


    An expert that got 10 achievements.


    An expert that got 5 achievements.

  • Master
  • 1,420 Answers

Have a technician check your gas pressure, your pilot should be nice and blue. You could start by replacing the thermocouple but I think it is gas related.Is there a pilot adjustment screw on the gas valve? If so increase the flame. Has it always done this? If so, is the model made for the specific gas being used i.e. Natural Gas or Propane and it may be operating on the wrong gas?


Let me know what you find, Thanks!

Posted on Oct 11, 2007


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

A 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
The service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Good luck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

My blueflame gas heater won't stay lit

So we are talking about the same won't stay lit I will describe both ways. One is when you lift your fingers off the knob it goes out that instant which is probably the thermocouple needs replaced,look to make sure the tip of the thermocouple is in the flame of the pilot light first. The secound version of it is it goes out in a few minutes up to a few hours.The second version is most common.There is a part called a Thermocouple that is mounted next to the pilot light, it is around 3/16 of a inch diameter 1 to 2 inches long and should be mounted so the tip is in the flame of the pilot light. This is what tells the gas valve the pilot light is burning. If any dust ,cat hair ,dog fur what have you gets around the base of the hole the gas from this pilot light comes out of it will bend the gas, which move the flame so it does not hit the thermocouple like it should, this is below the flame so what ever is in there diverting the flame dose not burn up.A draft from a fan or door could do it also.I have used a procom ventless heater as my only heat for 7 years and have to blow it out twice a year. I bought a new thermocouple at the same time I bought the heater to have in the closet in case it went bad some night, it is still hanging there .Because it sucks air in from the bottom past the flame and out the top everything in the air gets burnt into a fine ash dust. So if you use compressed air to blow out your unit you might want to hold a wet towel up in front of it hoping a lot of that white powder dust will stick to it instead of flying around the room . My flame always looks so much better ,less orange and more blue after this .

Feb 10, 2014 | Procom Heating & Cooling

1 Answer

Procom ML 300TBA Pilot will not stay on when button released

It sounds like you need to clean the contact on the thermocouple.

Here is a link to the service instruction of how to do that.

Oct 12, 2012 | Procom ML300TBA Heater

1 Answer

My patio mushroom heater lights up ok but keeps going out by itself after about 5 to 10 minutes and then can be started again inatantainiously by starting pilot light and away you go until it goes out...

Here's a few things to check. When you light the pilot, is it a strong blue pilot flame, a weak blue flame or a lazy yellow flame? Is it heating the thermocouple enough to make it red hot after a few minutes? If the pilot is small blue or lazy yellow flame, it may be dirty and need cleaned. When the burner lights, the weak pilot flame may diminish causing the thermocouple to cool off enough to shut down the main burner. Clean the dirty pilot orifice by using a can of compressed air with attached straw. (The same canned air you use to clean computer keyboards) Blow it into the pilot assembly where the pilot flame burns out from and blow thru the air holes on the side, if applicable. You might also check the thermocouple itself to make sure the tip is not partially burn't off. It should be a smooth, rounded tip. Replace the thermocouple if cleaning the pilot orifice doesn't solve the problem. Douglas

Aug 05, 2010 | Coleman (5040B750) Patio Heater

1 Answer

Pilot turns on but when I switch to turn it on,

When you light the pilot, are you holding it down for 30-60 seconds. When you release the pilot button, does the pilot flame stay lit? Or does it only go out when you turn the knob to on position. Make sure the pilot flame is heating the end of the thermocouple and that it's a strong blue flame, not a lazy yellow pilot flame. Make sure the tip of the thermocouple is not burn't off, which usually happens with lazy yellow pilot flames. Replace thermocouple is nothing else works.

May 13, 2010 | Coleman 5040-751 BackHome Open Flame Patio...

1 Answer

Pilot light will stay lit but when heater comes on, the pilot light goes out - propane

Is the pilot flame hitting the thermocouple with at least 3/4 of an inch of surface on it? Then if it is then need to replace the thermocouple about a 5 dollar part. let me know if you need anymore help ken

Jan 31, 2010 | Procom Heating & Cooling

1 Answer

Pilot light flame is mostly yellow. LP gas

Thr thing you need to do is take the pilot assembly all apart and blow the dust and dirt out of it.
After burning for many, many hours the air that is move up through the pilot assembly leaves dust and dirt which plugs off a bit of the air and makes the flame run rich. Meaning that it does not get enough air mixed in for complete combustion.
When you clean it you will see the dirt and dust com out of it.
Reassemble carefully just as you took it apart and it will be back to working great again!!

I hope that this will help you to solve your problem!

Thanks for using Fixya!!


Dec 23, 2009 | Blue Flame Charmglow 30K BTU NG Vent Free ...

2 Answers


Sounds like your oxygen depletion sensor is shutting your unit off. The problem with fixing your unit is that it may cost you the same to purchase a new one (assuming you pay someone to fix it).

Feb 16, 2009 | Procom ML060HPA Heater

1 Answer

Pilot light seems to high

there may be an adjustment screw for pilot height. you'll have to look at the valve. a pilot should have an inner cone of greenish blue color and the surrounding flame should be a deep blue no yellow or orange tips. the pilot burns pure fuel no air. the main valve does mix air with the gas in order to burn.

Oct 24, 2007 | Procom ML300EBC Heater

Not finding what you are looking for?
Heating & Cooling Logo

Related Topics:

861 people viewed this question

Ask a Question

Usually answered in minutes!

Top Heating & Cooling Experts

Paul Carew

Level 3 Expert

3173 Answers

Dan Webster
Dan Webster

Level 3 Expert

8220 Answers

Tim Whalen

Level 3 Expert

3074 Answers

Are you a Heating and Cooling Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides