Question about Reddy Heater-30-55,000 BTU Variable

3 Answers

Won't fire up

I have a ready heater 55,000. When I plug it in, it runs and what seems like a fog comes out the front, but it won't ignite. After a short bit it turns off. I have put in a new plug.

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  • silvercliff_ Sep 07, 2008

    Thanks tbugger



    I tore down the unit and went over it. I don't have any spark. I checked the the plug lead with my electric meter and had no current.



    I called DESA and they said I needed a new igniter. The price was $100 bucks, which is about half the cost of a brand new heater.



    My heater is about ten years old, but I have maintained it so it looks brand new. I hate throwing away a piece of equipment that has been well maintained, looks like new, because of one lousy "plug in" part, BUT in this day and age of disposables what are you going to do. Especially when you go to auction sites where you can buy one for half the part price. Maybe I'll buy one of those and keep the other for parts.

  • iowacc Dec 21, 2008

    My heater is BRAND NEW. This is my 2nd heater. I returned the 1st one after only 3 weeks, and this one I have had for 4 days. All it does now is light, fire, blow for 20 seconds then flame out with a huge blast of blue smoke and then shuts off. Same issues. There is only ONE constant. Each time they wont stay on it is BELOW ZERO. It will run fine at 20 or so, but at -4? No. It will not run until the temperature is warmer. I need it only when it IS cold, a heater that will not work when it is cold is worthless.

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Silvercliff- since you use the word “plug” I am assuming that you have a spark plug type heater, not the new technology HSI type (hot surface ignitor) that uses a glowbar and an onboard computer.

Reddy heaters are simple to troubleshoot, but you must understand how the system operates.

Since you state that the heater produces a fog at startup indicates that you are getting “some” fuel.

Obviously, the fuel is not igniting.

Now, you must determine if there is any spark. Is a good spark arcing across the electrodes on the plug? If not, is spark being produced by the Ignition Control unit (aka spark box, transformer) ? If not, is the Safety control (reset) sending electricity to the Ignition Control unit?

If there is a good strong spark at the plug, then you are having a fuel delivery problem, even though there is “some fuel”. Understand that the amount of fuel being delivered to the nozzle is DIRECTLY related to the air pump pressure. If the air pump pressure is not correct, then the fuel delivery is not correct. Setting the pump pressure is not difficult. Pump pressure is CRITICAL. Instructions for setting the air pump pressure can be found at www.reddyparts.com .

If the air pump pressure is correct, then check the following:

  1. Cracked air line preventing correct pressure at the nozzle.
  2. Cracked nozzle adapter preventing the fuel from being SUCKED from the tank.
  3. Clogged fuel filter.
  4. Restricted or worn nozzle. The fact that your heater is a spark plug type heater indicates that it has some age on it. DESA recommends annual replacement of the nozzle. Are you using the original nozzle? Worn nozzles produce a SPRAY. New nozzles produce a FOG. The nozzle produces a cone shaped fog. If the cone is missing (not hitting) the spark, for some reason, then there will be no ignition.
  5. Finally, and don’t laugh, is your fuel 100% kerosene or diesel? Water sinks to the bottom of the tank. The heater draws fuel from the bottom. If there is an inch of water on the bottom…….., well, water will not ignite.

I hope this helps.

Posted on Sep 07, 2008

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I think your right SFHBADG, except going into the garage to get away from "Old What's Her Name" ain't that bad an idea.

Posted on Nov 19, 2008

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After having the same problem, I have concluded your best option would be to junk the entire thing. By the time you buy parts, you could buy a brand new heater without having the BS involved with a complete rip down and a nagging wife because your spending so much time in the garage.

Posted on Nov 19, 2008

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My suggestions:
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  2. be sure the fuel filter is clean
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