Question about Reddy R115DT Oil Filled Utility Heater

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I also have a reddy heater 115000 btu fan spins freely until I put the plate on the back of the motor back on. It then instantly tightens the fan so it won't spin. The black circle on the back of the motor is what causes the drag. How do I stop it from slipping back?

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Brian Niten

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Make sure the all the fins (4 of them) are in the right way. I think they are longer on one side than the other. You may need to remove the black rotor and make sure the plastic insert isn't broken and check for build up on the plate behind it and the plate that you have already removed. Do not loosen the metal ring around it unless you have some feeler guages to reset the gap between the ring and the black rotor.The only thing that holds the black rotor on the shaft is the plastic insert. There also isn't very much clearance between the black rotor and the plates that is sandwiched between so it doesn't take much build up on either surface to cause a problem. One more thing, do you have the foam input filter air installed. Without it, the compressor will **** in dust, dirt or what have you and that will cause buildup around the rotor. It will also cause the rotor to break if it gets tight enough.

Posted on Jan 03, 2011


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2 Answers

115,000 btu reddy heater, 5 hrs used in sprayfoam-grinding environment. stopped working. when plugged in, only hums for a few seconds, then stops. how can i fix that?

First, remove the top cover. Inspect for a varmint nest. If clear, manually spin the fan. If it does not you either have a broken rotor that is binding or you have a bad bearing.

If it spins freely, apply power- see if the motor runs with the top cover removed.
If YES, replace the top cover. Its possible that the top is binding the fan.
If NO, the start capacitor is defective. The cap on R115 is internal and is not servicable.

Reading material about a hummer

Nov 04, 2011 | Reddy HEATER R115 115,000-BTU PORTABLE...

1 Answer

Have a 115000 btu forced air kerosene heater.. used maybe 12 times over 3-4 years. when turned on motor is binding somehow. i maqnually turned blade and does not spin easilly. whats causing this?

Unfortunately it is the lack of use that has hurt this unit. Try using PB Blaster on the bearings and working the fan by hand until it loosens up. It will loosen up eventually, when it does give those bearings lubercation with a light oil. From running and shutting down and not using it for a while I would think that things got a little rusted up inside, this happens due to condensation forming on the warmed parts then it rusts. You can check the fuel pump but they usually are not an issue with the heaters.

Dec 27, 2010 | Reddy HEATER R115 115,000-BTU PORTABLE...

1 Answer

Will the fan on the reddy heater not run if the ignighter is bad? When i plug it in the fan doesn't run.Do i need to replace the motor?

The fan motor runs regardless of the igniter as it is also the fuel pump. Possibly you may need to replace the motor but try this first. Remove the top section of the heater this exposes the fan motor, try spinning the motor by hand,it should spin freely if it does not try some light oil in the front and rear bearings of the motor and turn it by hand until it frees up. You may need to do this several times!! Now that it is spinning free put the heater back together and try it out. If it does not work a new motor is in your future. Hope this works out for you.

Dec 26, 2010 | Reddy Heater-30-55,000 BTU Variable

1 Answer

Reddy heater115000 motor seems to lock up I take the pump off and put it back on than the motor spins freely and unit runs 5 or 10 minis or so than locks up again

you have to replace the pump yearly it gets brittle and leaves a residue on the housing. clean the housing with a carb cleaner and then polish with an aluminum polish and that should fix the problem.

Dec 22, 2010 | Reddy HEATER R115 115,000-BTU PORTABLE...

1 Answer

Hello i havent Used my ready heater 60000 btu since last winter. It was working fine when i unpluged and emptied when i plug it up i hear a hum and nothing else no blower or anything....could ude...

The fan motor is setup...
Tear it part and get some WD-40 worked into the motor at the shaft end... then when you get it spinning freely... get some light motor oil worked into the bearing...

Works best if you can tip the heater back so the WD-40 and oil naturally run back into the motor...


Dec 13, 2010 | Reddy Heater-30-55,000 BTU Variable

1 Answer

When I plug the unit in, the fan turns very slow, and I smell fumes, but the unit does'nt turn on

I am not able to give you a solution, but will put forth some possibilities for you to check.
  1. Spin the fan manually. No power, please. If the fan spins freely, and no grinding is heard or felt, then the starter capacitor or starter relay (whichever equipped) is defective. Internal capacitors are not serviceable. Replace the motor.
  2. If the fan does NOT spin freely and/or binds, either the rotor (air pump) is broken or a motor bearing is bad. The rotor is replaceable, the motor bearing is not serviceable.
If you decide to repair the heater as described then the air pump pressure must be reset, in either case, in order for the heater to burn properly. It is a simple process. Follow this link for instructions

Nov 02, 2010 | Reddy HEATER R115 115,000-BTU PORTABLE...

3 Answers

Reddy Heater 110K btu motor won't start.

Bearing have gone bad in the electric motor. You will have to replace the electric motor. They are expensive but still cheaper than buying a whole new heater.

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Reddy heater 110,000 btu forced air portable kerosene

try this, take off the top cover. plug in the heater and when the humming starts, rotate the fan sharply with a screwdriver. keep your fingers away from the fan. if the fan spins under power your start winding is shot. get a new motor. www dot desatech dot com

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