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I have a coleman evcon electric furnace ,it was running and would not cutoff the heat got up to around 90 thhe thermostad said it was running in aux ,so I turn the main breaker off and the in a few minute I cut it back on it started running for a fewq seconds and it would cutoff the repeat the process so I cut it of again and the later turned it back on and now nothing happens and the aux light is still on and the core is warm but no heat comes out and the blower does run

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If the thermostat is ok which it probably is then your sequencer is most likely stuck i would say. You could verify that by removing 24 volts to the sequencer to see if it will shut down the heater
I have a coleman evcon - themobilian_598.jpg When low voltage from the thermostat is applied at the base of this sequencer it heats a bi-metal and turns on each coil and fan in a sequence that will insure the breaker don't throw from the power surge AND warm air comes out the vents when that fan comes on. I would start there.

Posted on Dec 28, 2010

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I have an Electric Furnace that blew the transformer and the reverse thermostat relay, Have replace them both and the Heat and fan sequence the side the marked M1, M2, M3 M4 showed signs of overheating that also has been replaced, but overall since the transformer and the other componets have been replaced the heating coils have not kicked and when the heating switch on the furnace it push the blower just wants to run continous

Posted on Jan 14, 2011

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