Question about Reddy Heater-170,000 BTU Kerosene Deluxe

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Reddy heater will not fire.

I have a reddy heater model 100a. Fires only once and a while but will not stay running. I have installed a new fuel pump filter kit. Breather is new. Nozzle is new. Spark plug is new. Fuel is fresh and fuel pressure is 3 psi. Spark is very strong (Blue) in fact. What am I missing??

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  • williamgarne Dec 07, 2008

    Have been busy sorry I did not get back to you sooner.

    You were right. In my haste to put the heater back together I put the nozzle seal in the wrong place. I was pumping pressure into the fuel tank instead of pulling a vacuum. Thanks for the prompt help.

    Bill Garner

    Tupelo, Ms.

  • Anonymous Feb 22, 2009

    I have a similar problem with my 35,000 btu reddy heater. The spark plug keeps getting fouled up. I keep cleaning it and it keeps getting something building up on the electrode of the spark plug until it bridges the gap and then it wont fire. Clean it up and its ok again for a while. The plug gets build up on it right where the fuel hits it. Works ok for a few days, then it gets harder to light, finally it wont light at all and i have to remove the cover and clean the plug.

  • Anonymous Mar 14, 2014

    Disassembled and cleaned pump assembly. Installed LP gauge as recommended. Pressure only reaches 3 psi. Made sure reassembly is correct,checked for leaks and all looks good. 3.6 psi is specified pressure. Thanks for your help



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Sounds like the nozzle has a piece of dirt in it not letting the fuel spray to go wide enough to ignite every time.disconnect the fuel line and air line from nozzle.take spark plug out and remove the three screws that attach the nozzla from combustion chamber.put nozzle assy. in vise to hold it still.take a 5/8" socket and remove the brass nozzle from holder.put brass nozzle in vise tip down and remove inner assy.from nozzle.use a pair of pliers.inner assy. isn't in very tight.just loosen don't take it out yet.............remove brass nozzle from vise and turn it over so the assy. is facing down.make sure you have it over some thing so you don't lose the parts unscrew assy. inside you will find a silver colored piece with notches on the front.THAT IS THE NOZZLE...carefully blow air through the front tip then look through it.should be a clean round hole.once it is clean reinstall in reverse order as you took it apart.don't get to carried away with tightening the assy. back in brass nozzle.JUST SNUG.then try to fire the unit again.should work now.

Posted on Feb 17, 2009

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I have a 150,000 BTU kerosene heater that sometimes will fire and sometimes it will not. If I tap on the transformer it will ignite. Somebody told me that usually if it is the transformer, that they are usually good or bad.

Posted on Feb 05, 2009

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I had a similar problem with mine a few years ago. After a close look, I found a hairline crack in the cast aluminum burner head. I didnt think it was anything, but it throws off the pressure. Mine would work fine with the cover removed also. I was told that if it works with the cover off, most likely there is an airleak somewhere. Make sure your fuel lines aren't cracked or sealing properly on the fittings.

Posted on Jan 28, 2009

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Your problem is most likely the lack of pressure from the air pump. Your pressure is extremely low. Pressure on a 100k heater should run 5psi. At 3psi there is not enough fuel and not enough air to atomize whats there. Bump the pressure up. If it won't come up, then you have an air leak. Test w/ soapy water. Keep your fingers clear of the fan!

Posted on Dec 04, 2008

  • Jerry Magee
    Jerry Magee Dec 07, 2008

    That'll do it every time!


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