I have an AllPro 150000 btu kerosene/diesel heater. It runs for a few minutes and then starts shooting flames, smoke and sputters. What causes this?

fuel tank not venting and allowing the fuel to flow freely

First thing is to download the service manual.

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

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

Thanks

M Cramer

www.allpartsinc.com

The first thing to check would be the fuel filter from the tank to the nozzle.

Then check the input and output filters on the back of the pump housing.

Here is a link to a service manual.

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

Thanks

M Cramer

www.allpartsinc.com

Hi,

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

heatman101

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The white smoke is the kerosene fuel hitting the hot combustion chamber. Your flame has went out. The cause for this could be many. The first thing you need to do is check your fuel. Remove your fuel cap and look at the bottom of the tank for trash or water. Use a good flash light. It will all settle to the bottom. If so, drain and clean out your tank. Add fresh kerosene. Check your fuel filter. Replace if dirty. Test again. If problem continues, It is possible that your photo eye could be deffective or just dirty. It is located next to the ignitor or spark plug. It sees the flame. If the flame goes out, the unit shuts down. The flame has to be smooth (not sputtering). Water in the fuel will make it sputter and the unit will shut down. When the water/moisture in tank settles to the bottom, your suction fuel line is just off the bottom which results in it picking up the water instead of good fuel. Always disgard the old fuel from previous year and start with fresh fuel. This will cut down alot of your problems in the future.

Can see fuel at nozzel and have fire at electrode but will not burn

turns on for a minute then shuts off with a puff of smoke

Sounds like a full services like its getting too much air,and blowing out the flame. Check your fuel filter,and add a new spark plug ,also change the vanes on the pump, thus aFuu service. these sould be performed every fall before .

sounds like the ignitor is bad, mine would try to light and do the same thing. I noticed one night that it was arcing out the entire length of the wires to the plug. If you have a good spark then i would suggest a CAD flame sensor, very cheap.

The deisel fuel hogged it up. Clean everything out and replace the wick. Deisel fuel is filthy to burn and it needs a lot of airflow.