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Posted by John on January 12th, 2003 10:02 AM
In reply to Coal man Furnace won't stay on by Dennis on January 11th, 2003 07:26 PM [Go to top of thread]

The pressure swith senses a vacume or negative pressure inside the combustion chambers, it must sense the vacume before it closes. It has a plastic tube coming from it that terminates on the inside wall of the furnace. Simply take the plastic tube off and blow air into the tube towards the furnace. There may be something blocking the tubing. If this does not take care of the problem have a service company come out.

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