I have a 110,000 BTU Reddy heater that will not run. The motor spins freely when off, but will not spin at all when it gets power. This happened after it ran out of fuel. The reset switch will trip.

SOURCE: 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

SOURCE: 50K BTU Reddy Heater Trips Circuit Breaker

If the unit lights Check the photo cell this can be done with an ohm meter and good light. Should have continuity in light.

SOURCE: 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.

Testimonial: "That is what I was afraid of, but just needed to hear it. Thanks for your help!"

SOURCE: 150,000 BTU propane Reddy Heater shuts off after ignition

Is there a frost line on your LP tank, if so you may need to replace the tank with a larger tank or refill your tank. This can happen if the tank your using is too low or too small (use 100 lb tank or greater). If there is no frost line it may be an issue with the thermocouple. The manufacturer offers a service manual and owner's manuals on there site. This should assist you... www.desatech.com Thank you

SOURCE: motor went bad in a reddy heater pro 110 110,000 btu

The manufacturer is online at www.desatech.com . If you go to that website you can find part distributors. I hope this helps you!