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  1. #1
    Join Date
    Nov 2005
    Posts
    1
    I have an older reznor unit heater. when burner ignites fan begins to slowly cycle on off. the time between the on gets smaller until the fan runs only on. when i turn tstat way down, it is opposite. cycles on off quickly then gradually gets slower until completely off. fan control switch?

  2. #2
    Join Date
    Oct 2005
    Location
    Fairfax, VA
    Posts
    111
    Yes and no. The fan switch controls the fan according to temperature, but the reason it's acting like that could be due to various things being wrong. Only an on-site inspection and testing will tell, by someone who knows what's normal.

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