Furnace exhaust blower motor cycles on and off continuously between the normal heating cycles. any ideas? This is happening on a Goodman Model GDP1075-3 , 80% efficent about 15 yrs old. I replaced the flame sensor with a larger type about a week before it started doing this.
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Has anyone had an occurrence of a Laser 730 or 731 over firing?
The top of the heat chamber and the heat exchanger glow red on high when this occurs....
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