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  1. #1
    Join Date
    Jan 2006
    Location
    Seattle, Wa
    Posts
    116

    Vision Pro th8220 ?'s

    Hey guys I have a buddy whos fan wont stay running when system is satisfied. He wants the fan on all the time, fan switch is on not in auto. So I'm assuming that its one of the internal setting but not sure which one. Any ideas?
    Thanks

  2. #2
    Join Date
    May 2000
    Location
    Indianapolis, IN, USA
    Posts
    34,474
    Have him check the programming. Sometimes if you program it one way, it doesn't always listen to what you tell it to do. Usually the other way around. We've had people accidentally program a time period to on then wonder why the fan is blowing even though they think they've set it to auto.

  3. #3
    Join Date
    Jan 2004
    Location
    Lancaster PA
    Posts
    68,594
    He probably has it set to "circ" thinking that will run it 24/7. It won't.
    Muct be set to "ON" to run 24/7.
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  4. #4
    Join Date
    Feb 2009
    Location
    central Florida
    Posts
    981
    is it running in program mode?
    if its not in program mode it should stay on
    if it is they will need to change the fan setting in the program mode
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  5. #5
    Join Date
    Jan 2006
    Location
    Seattle, Wa
    Posts
    116
    No its set to on.

  6. #6
    Join Date
    Feb 2007
    Posts
    534
    On that thermostat the fan is programable to occ and unocc modes. Press the fan button while in the schedule screen to program the fan ( auto is the default mode ). this will more then likely resolve your issue... let me know if you need the manual for that stat. good luck.

  7. #7
    Join Date
    Jan 2006
    Location
    Seattle, Wa
    Posts
    116
    OK so I got some more info. Fan works when satisfied. However if you turn the system to off and fan to on fan does not run. This is the commercial stat, I have a resi stat and I can do this. Does this have something to do with it being a commercial stat? I went through all the parameters and everthing looked right?

  8. #8
    Join Date
    Feb 2007
    Posts
    534
    Quote Originally Posted by kneehigh View Post
    OK so I got some more info. Fan works when satisfied. However if you turn the system to off and fan to on fan does not run. This is the commercial stat, I have a resi stat and I can do this. Does this have something to do with it being a commercial stat? I went through all the parameters and everthing looked right?
    How is the subbase and unit wired?

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