Question about All-Pro Propane Garage Shop Heaters - All Pro SPC 125 Forced Air Propane Space Heater

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Starts, fires but won't keep lit.

I have a All Pro SPC K100 that worked great and then tonight, started and lit about half way but then went out and smoked!! I just purchased this used and have tired it few times no problem. I have took the filter out and washed it and will let it dry. I put new fuel in hopeing that helps. I have no book to guide me for trouble shooting. It will run but no heat and then will shut off. I have no idea where to stary. I notice when i took the filter panel off, that it had a couple knobs and a air port stating so much psi but i have no clue what that is all about. Any help would be great.


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  • RAJMICKEY Dec 24, 2008

    I have the same SPC-K100 and same problem worked great then started to sputter and not stay fired fan runs but no heat any solutions pls let me know MRJ_92599@YAHOO.COM


5 Suggested Answers

  • 1 Answer

SOURCE: Fan turns on starts blowing and a lot of smoke.

when you start it the smoke starts wright away it is not getting the right air flow takethe top part off and started see what it does if it stays running try to ajst. the fens ok .

Posted on Dec 30, 2008

  • 8147 Answers

SOURCE: I have an All Pro SPC K100. The fan runs and mist

You probably have a klixon/high limit popped out or failed. This video shows were it is on another heater and although yours is different they all have limit switchs thanks to ralph nader. LOL
Check this out: HERE

Posted on Jan 09, 2010

  • 146 Answers

SOURCE: I have an All Pro

First thing is to download the service manual.

You need to make sure the filters are clean and that you are getting the proper air pump pressure.

If the units starts up and runs good and slowly goes out it will normally be due to a lack of fuel getting to the nozzle. When there is not enough fuel being delivered to the nozzle from either a clogged fuel filter of dirty air pump output filter the unit will slowly shut down from lack of fuel.

If the unit shuts down while it is running properly and the nose come is orange then you probably have a problem with a photocell or the flame out control.

If you have other questions you can contact our service department at 269-685-4125 at extension 224


M Cramer

Posted on Jan 05, 2011

  • 43501 Answers

SOURCE: all pro 170T dual fuel heater starts and runs for


Here are a couple of tips that I wrote that tell you how to troubleshoot a Torpedo or Reddy heater...

Reddy Heater - Troubleshooting Torpedo Heaters

Torpedo Heater Pump Pressure Adjustment



Posted on Jan 16, 2011

  • 13 Answers

SOURCE: Heater will not get fuel. It is "All Pro" Model

First check the filters such as fuel,intake and esspecially the air exhaust filter. If the exhaust filter is dirty it will restrict air flow preventing fuel delivery. You may also want to check the hoses. If they are cracked or don't fit tight it could cause an air leak which would prevent fuel delivery. Also when you check the fuel filter check to see that the fuel pickup tube is still connected. After all of this if you still have not found the problem and fixed it you will need to check the pump pressure. Check the operators manual for pump pressure specs. if they are not written on the heater side panel.

Posted on Jan 22, 2011

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I have a tip at which should explain your problem and how to fix it as well as where to go to get the parts. All these types heaters (Reddy, All Pro and Master Heater) were made by DESA international.

Thanks for using FixYa and for the great rating. Please consider a testimonial. Thank you.


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Check ot the video HERE

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I have an All Pro SPC K100. The fan runs and mist comes out the heater, but no flame or heat. Rich

You probably have a klixon/high limit popped out or failed. This video shows were it is on another heater and although yours is different they all have limit switchs thanks to ralph nader. LOL
Check this out: HERE

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I have had the same problem on a smaller unit (30,000 BTU). I remove the cover, take the thermocouple out of the burner area, and clean it until bright with either scotch brite or very fine emery cloth. The deposit on the outside prevents it from tranfering the heat to the hot end of the thermocouple and in turn to the sensor. I usuall do this once a year. The cleaning hasn't worked for me recently but the unit is 12 years old now and I will look for something else to fix.

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