Question about Mr. Heater Mr Heater Portable Buddy Propane Heater

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Mr. heater problems

I have had two tank top propane heaters and both of them have had the same problem. A minute or so after it is started, it starts spitting and flaming around the top. I thought it was the propane liquifying but after bringing the 5 gallon tank inside for an hour it did it again. What do you think?

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Defective venturi or cob webs in burner

Posted on Sep 27, 2009


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Coleman heater model 5445c700 propane camp heater wont light. It did work fine. When I hold the knob in the light position you can hear gas but it barely ignites then goes out. I've tried new gas and...

If you're using a 20lb propane tank (Gas Grill Tank), that may be the problem. Turn off the propane tank at the tank valve and disconnect it from the tank. Wait 5 minutes and reattach the heater hose to the tank. Turn the propane tank valve on very,very slowly until it's all the way open. Try lighting your heater now. If the pilot flame height returned to normal, that was the problem.

FYI - The Thermocouple has nothing to do with the length of the pilot flame. It's a safety feature that stops the gas if the pilot flame goes out for any reason.

Hope that solves your problem. Please let me know.


Feb 07, 2011 | Coleman Heating & Cooling

1 Answer

I have a 40,000 BTU propane reddy heater. I just refilled the tank and attached it to the heater like I normally do but now when I start it it will run fine then it will flare up and shoot out orange flame...

Did they over fill the tank and you are getting pure liquid to the heater..... Sounds like when you use a propane bottle hand torch and tip it up side down the flame turns orange and goes out. Also the regulator vent may have gotten plugged with dirt or ice. May try and bleed some of the propane pressure off of the top of the tank....... But make sure you have it outside and plenty of ventaltion and no open flame any where...... Propane is lighter than air so it settles down on the ground at the lowest point.....hope this helps..... Or you could take it back to your suppler and get a different tank.

Feb 01, 2011 | Reddy Heater RLP100 Portable Forced Air...

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I open the tank but when I try to start the heater it runs for a second and then goes out as if it wasn't getting any propane.

check the flame sencor

is clean and in postion pressureswitch could be blocked , try jumping out pressure switch see if it lights , check tank is full ,

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Is there a frost line on your LP tank, if so you may need to replace the tank with a larger tank or refill your tank. This can happen if the tank your using is too low or too small (use 100 lb tank or greater). If there is no frost line it may be an issue with the thermocouple. The manufacturer offers a service manual and owner's manuals on there site. This should assist you... Thank you

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Reddy propane heater RLP100

Try a little longer, sometimes it takes a full minute to heat the thermocouple. Check and make sure thermocouple is in flame. If all this is ok. then your going to have to change the valve.

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A clue to what could be wrong is that you mentioned it took 10 minutes for the pilot to go out. It could be your gas valve. Get a technician in to check your gas pressure both before the gas valve and after. Have them check it as the water heater is running.

May 15, 2008 | Dayton Heating & Cooling

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