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

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Rollout Limit Switch Keeps Tripping

I just had a guy out yesterday who replaced the Rollout Limit Switch on our Coleman/Evcon home furnace.  This morning, the furnace kicks on but only runs for about five minutes before you can hear the click of the switch tripping and then the gas flame shuts down.  I can manually reset the switch by pushing on the top of it, but that only repeats the procedure.  Thoughts?

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  • dyetso Dec 17, 2008

    Dead on, brother.  We had the meter upgraded when they put the pool in last spring; must be pushing too much.  I throttled back the gas valve a bit tonight and it's working normally.  One related question: as the gas is firing into the four chambers w/in the heater core, you can see the vertical fins and it looks as though they're degraded quite a bit.  Is that the result of too much gas/flame or is that just an old Coleman/Evcon on its last legs?

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Have someone check the gas presure most likely too high no more than 11

Posted on Dec 17, 2008

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