got a old rheem gas furnace. recently the fan has been short cycleing. the burner remains on. fan runs for about 1 minute quits and about 1.5 starts back up.
model rgga 100a
model rgga 100a
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Check the fan limit switch in the plenum. When the plenum heats up the fan turns on, cools down shuts off. Could be the differential between on and off is too tight. -
FAN LIMIT
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Might check the fan motor. Some have an overload inside them for when the motor starts to go bad. You can jump the fan control and if it still does it you need a new blower motor.
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My mistakes dont define me they inform me.My mistakes dont define me they inform me.Comment
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motor was just recently replaced. 1 1/2 yrs ago. went looking for a limiter switch dealer still looking. may be time for a new furnaceComment
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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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