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Thread: blower motor?

  1. #1
    Join Date
    Jan 2006
    Posts
    2
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    After furnace runs through regular heating cycle and blower shuts down, about a minute later, the blower kicks back on for about 10 seconds.
    Any thoughts?

  2. #2
    Join Date
    Jul 2005
    Posts
    648
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    Fan/limit control probably cutting fan out too early after burner cuts out. Heat exchanger probably still a little hot causing control to kick blower back on.

  3. #3
    Join Date
    Apr 2003
    Location
    Levittown, PA
    Posts
    818
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    Heat built up around the heatexchanger. Your blower is controlled by temp in heat mode, even when the burners shut off there is residual heat, enough to bring on the fan. Normal operation.
    Sometimes when I consider what tremendous consequences come from little things, I am tempted to think there are no little things!

  4. #4
    Join Date
    Jan 2006
    Posts
    2
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    Thanks for the info on this

  5. #5
    Join Date
    Mar 2005
    Location
    burlington county n.j.
    Posts
    9,793
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    how old is heater? if electronic controls it could be tripping a limit switch after shut down. make sure filter is clean, if it is call for service.

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