Question about Reddy HEATER R115 115,000-BTU PORTABLE KEROSENE FORCED AIR HEATER

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Reddy heater shuts off when shell is put on

I have a 115,000 btu Reddy heater that's nearly new--bought it from a neighbor. I've replaced the nozzle, nozzle holder, electrode. Checked the photocell; it looks clean. Air and fuel lines look good. We put a pressure gauge on it, and adjusted pressure to 5.1 lbs, per spec. The heater fires right up and burns well, until we put the shell on. Then it shuts right off. What do we do next?

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  • mcddyea Mar 04, 2009

    Thanks for the advice, but everything on the circuit board looks good. . .

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Check out the fuses getting blown out on the internal chip circuit board and also the overheating component on that same circuit boasd.the burnt component will look little bit extra blackish on its sides.

Posted on Mar 03, 2009

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Replaced rotor on my 115 ready heater now it puts out way to many fumes,it burns my eys.any suggestions


The fuel/air mixture is not right.
  • Start by setting the pump pressure to factory specs.
  • Stop all air/vacuum leaks between the air pump & nozzle
  • If the problem persists, replace the nozzle. Desa recommended annual replacement. Simply stated- the nozzle wears out to a point that the fuel is a spray rather than a fog and the fuel can't burn completely.
  • You don't state the type being burned. Diesel smells more than kerosene.

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When I turn my reddy heater on model R115d(t) the fan cycle for approximatley 5 seconds then stops. The glow plug is getting red but no fuel. What could cause this?


Could be a dirty air filter. Fuel nozzle could be clogged. Fuel filter clogged, if it has one. Some don't. Could be a problem with the low pressure compressor that is attached to back of the fan motor.

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Is there supposed to be flame coming around the cone of a 115,000 btu reddy forced air kerosne heater?


no. the flame should be behind the cone. If it passes the cone, this means that there is too much air. simply turn the air pressure screw until the flame no longer comes beyond the cone.

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Here is a service manual:

http://www.desaparts.com/service_manuals.html

If the flames actually starts but the unit shuts off after 5 seconds you need to check the pump cover on your heater to make sure you have no cracks in the rear cover.
This could be from low pump pressure but most often this problem is caused from a defective control board.

Oct 03, 2010 | Reddy HEATER R115 115,000-BTU PORTABLE...

1 Answer

Heater will come on for about 4 seconds then shut off. I have a 115 BTU kerosene Reddy Heater.


Removed filter and blew out a tiny piece of debris. Didnt think that would be enough to do any harm. Put the filter back in and it started up and runs great now.

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Dec 16, 2009 | Reddy HEATER R115 115,000-BTU PORTABLE...

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Reddy heater 115,000 btu heater runs for about ten minutes then shuts off does this model have a thermostat or carb that might need adjusting????


A heater with this problem is probably the hardest to determine the cause. There is no carb orn thermostat to adj. If it uses a spark plug ignitor I would check the plug gap and make sure it is at an angle to the nozzle. If it has Hot Surface Ignition this will not be the problem. I would then check the fuel filter in the dip tube in the tank and the pump pressure. I should be about 4.5 psi. I would also remove the nozzle and replace it or at least blow it out backwards withlcompressed air to clean it. If all these items fail to correct the problem I would replace the flame sensor. Let me know what you find out or if you have any questions.

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1 Answer

Reddy Heater teasing me:)


sound like there is dirt and stuff in the fuel tank.when the heater fires up it pulls this stuff up into the filter.as it runs it plugs the filter off causing the heater to shut off.whe it shuts off the garbage falls back into the tank.when you refire the heater it pulls the garbage back up again.it never pulls it up the same so the time verys every time

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