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Reddy heater pro 110

Plug in ac outlet,fires up and works for 2-3 min. blows large puff of smoke and shuts down

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  • 3 more comments 
  • tex8 Nov 04, 2008

    Ordered a fuel filter waiting on parts to get here.

  • tex8 Nov 04, 2008

    How do I troubleshoot the circuit board?

  • tex8 Nov 09, 2008

    So far replacing the fuel filter seems to have solved the problem. Therstat controlls seem to be working ok. Thanks again

  • sjohnson188 Dec 05, 2008

    Hi I have a ready heater 70,000 and it starts and runs good for about two minutes then shuts down. I have read others have had this problem and have cleaned the photo cell . I have run it with out the top and runs fine for well over a 1/2 hour but when I put the cover back on, within two minutes it shuts down. Sounds like a heating problem.Any ideas, not sure if this has an overheat system for safety or not.


    Scott Johnson

  • Anonymous Mar 17, 2014

    reddy heater Pro 110 just blows fuel out of the front



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Does your heater use the older spark plug technology or the newer Hot Surface Ignitor (HSI) technology?

Without this critical information about all this technician can do is guess.

My best guess at this time would be either water in the fuel or a restricted fuel filter.

Posted on Nov 01, 2008

  • Jerry Magee
    Jerry Magee Nov 04, 2008

    As stated above, I was only taking a wild guess to a solution based on the information provided by you. If the filter does not cure the problem then answer the question that I asked you to answer previously.

    Again, here's the question "Does your heater use the older spark plug technology or the newer Hot Surface Ignitor (HSI) technology?"

    Here's why I asked the question- Spark plug heaters are simple to work on and simple to troubleshoot. The solution that I posted could probably solve your problem.

    On the other hand, if your heater has Hot Surface Ignitor technology, then there is a computer on board and you must troubleshoot to determine whether the problem is fuel related or electronics related.

    Don't just throw parts at the heater, hoping for a fix. Troubleshoot it, then throw the parts.

  • Jerry Magee
    Jerry Magee Nov 04, 2008

    OK. If your heater has a circuit board, then it is an HSI type heater.

    Again, did you check for water in the fuel. You never said. Simply shine a flashlight in the tank- look for water droplets rolling around on the bottom.

    In a hypothetical situation here is what happens. The heater is running good. Then a droplet of water passes through the nozzle. A momentary flameout condition. A big puff of smoke & unburnt fuel. The flame perpetuates itself, but the flame has been extinguished by the water. The photocell sees the lack of flame and directs the board to shut the heater down. The heater has done its job. For safety reasons it can't just continue to pump fuel into a hot combustion chamber.

    Go back to basics and check for water in the fuel before you check the board. You may just get out of this do-it-yourself project for FREE. No parts required.

    From DESA's tech bulletin to test the board

    "Remove fuse cover and check fuse

    (70,000 to 200,000 Btu models only). If

    fuse is blown replace it with a GMA-10

    fuse. Disconnect motor red and white

    wires from control. With Ignitor wires disconnected,

    attach voltmeter leads to the

    ignitor terminals (labeled IGNITOR). Use

    the 0 to 200 V.A.C. scale. Plug power cord

    into a grounded 120V/60 Hz outlet. Meter

    should read 120V(rms) for approximately

    10 seconds. If voltage reads 0 or stays at

    120 for more than 10 seconds, the control

    is defective and should be replaced."


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Where is fuel filter pro 110

Posted on Dec 19, 2008


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There are four possible answers to this problem, if the heater starts normally, runs for a few seconds or minutes and the shuts down but was still running normally at the time of shut down, this could be caused by the photocell, also known as the flame out control. This safety device may be failing, shutting down even though the heater is working normally, check the operation of the photocell. The second cause may be partial fuel filter blockage, the heater is effectively starving itself of fuel, so the flame blows out, hence the puff of smoke, and then shuts down on the safety cut out. Third cause, if this model has a compressor at the rear of the motor, the problem could be low pump pressure, caused by wear or contamination of the carbon blades, this would cause the wrong amount of fuel to be syphoned up, with weak fuel mix the heater may blow itself out and shut down. The fourth cause, perhaps indicated by the puff of white smoke, is contamination of the fuel with water, water will cause the white smoke and also is indecated by white residues or a power like substance on the end plate of the heater which glows red hot when burning.

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Please answer the following questions. There are several folks on the board that can help but we need to know some vital information so we can get started. Answer these, if you can:
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Hope this helps!

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