Hi I have a coleman electric presidential II furnace serial #117960300 model# 3123B750blower #3123A590 when I turn the heat on it will heat and work fine but then the blower stops and the heat keeps heating it gets very hot and I have to trip the breaker to turn it off can any one help me thank you kellie

A sequencer or blower relay is stuck or defective. You will need to use a meter and the wiring diagram on the back of the blower door to track down the problem. Then you will have to replace that part.

Sounds like this is in a mobile home because of the model number.

Post under Coleman at this link. They also have parts available.

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