Question about Coleman Propane Forced Air Heater w/Electronic Ignition (50,000-80,000 BTU)

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Furnace not cycling properly.

Furnace will work fine for 8 to 10 hours, then after last cycle, will not restart. I have replaced the t-stat, and the on-off power switch at the furnace. I also found a short circuit under the mian power switch, and repaired that. Thought I had this thing licked, but it ran fine thorugh the night, then sometime this morning, the home began to cool off, and the furnace would not kick back on by itself. Now if I turn off the furnace, and turn off the breaker, then turn them back on, the furnace will kick back on and run fine for another few hours. This unit is a Coleman Presidential III 7900 series, standing pilot furnace.

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You might want to check the filter, if the filter is restricting the airflow the furnace will over heat and it will shut down. if you turn it off and on it will reset it and it will try again. Pull the filter out half way and try that, if it runs fine then clean the filter or get a less restrictive one.

Posted on Feb 11, 2009

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