dehumidifier - bypass humidistat and run via timer?

twd000 Posted By twd000, Jun 18, 2018 at 2:33 PM

  1. twd000

    twd000
    Feeling the Heat 2.
    NULL
    

    Aug 28, 2015
    322
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    Loc:
    Southern New Hampshire
    I have a PerfectAire 50-pint dehumidifier running in my basement. No matter where I set the desired % level, it runs 24/7. Is there a way for me to bypass the stat, and just run it off a 3-prong light timer? Like 30 minutes every 2 hours? When I unplug it from the wall and plug it back in, it doesn't restart until I press some buttons on the front front display panel
     
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  2. fbelec

    fbelec
    Minister of Fire 2.
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    Nov 23, 2005
    2,497
    161
    Loc:
    Massachusetts
    it might have a 3 to 5 minute delay when you reset the percentage of dry. if by running the thing on the moisture very high so it doesn't run and it runs on it's highest moisture setting the humidistat is no good. call the company support line. it should only be set for 50% humidity. if it runs to long it will heat the space that it blows into at least 10 degrees higher than it should. i run mine in my basement on 50% and it feels like i have the ac on dry but still cool
     
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  3. sportbikerider78

    sportbikerider78
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    Jun 23, 2014
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    I would get a cheap humidity meter to see what the real RH is in the basement. You might want a larger capacity unit to bring the humidity down more.
     
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  4. twd000

    twd000
    Feeling the Heat 2.
    NULL
    

    Aug 28, 2015
    322
    60
    Loc:
    Southern New Hampshire

    After playing with the controls and watching it the last couple days, I'm beginning to think that the fan runs 24/7 but the compressor only kicks on as needed. Is this how they are designed to operate? I can hear the compressor cycle but the fan is always running

    I tested your theory about the delay, but even 24 hours later, it is still running. I set it as high at 90% RH, and it never turned off. The basement is cool and dry as it should be. It is pulling water from the air; I diverted the drain hose into a 2-liter flask and it overflowed into the sink the next day
     
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  5. fbelec

    fbelec
    Minister of Fire 2.
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    Nov 23, 2005
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    Loc:
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    fan should not be running 24/7 read page 5 of the manual it should only run when it cycles on unless otherwise switched to continuous
     
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  6. fbelec

    fbelec
    Minister of Fire 2.
    NULL
    

    Nov 23, 2005
    2,497
    161
    Loc:
    Massachusetts
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  7. twd000

    twd000
    Feeling the Heat 2.
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    Aug 28, 2015
    322
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    Loc:
    Southern New Hampshire
    wow, that's scary on the recall - first I have heard of that fire danger!

    alright, I'm going to return this piece of junk for a refund. Any recommendations on a brand to look for as a replacement?
     
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  8. zrock

    zrock
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    Dec 2, 2017
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    Depending on the size of your space it will take longer than 24 hours for the machine to bring down the humidity. Especially in a basement you are pulling all the moisture out of the concrete as well. In the winter i run one and it takes well over a week and if i try to bring it down to 50% it can take up to 3-4 weeks but i also shut it off at night because its right by the bedroom.
     
  9. twd000

    twd000
    Feeling the Heat 2.
    NULL
    

    Aug 28, 2015
    322
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    Loc:
    Southern New Hampshire
    we've had it running for a month already this summer, so it should be pretty well stabilized by now, and not "catching up". I can confirm that is is working due to the fact that the air feels cool and dry, no mold growing anywhere, and it is dumping water down the drain. The problem is that once it hits the setpoint, the fan keeps running even though the compressor is not
     
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  10. zrock

    zrock
    Feeling the Heat 2.
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    Dec 2, 2017
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    Loc:
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    Mine if I leave it in full auto mode the fan will never shut down. But if I put it in manual one it reaches its set point it will shut down but not for long as the humidity in my place moved fast. As mentioned above get a moisture meter and check... doing the feels dry and looks dry just does not work..

    Sent from my SM-G903W using Tapatalk
     
  11. twd000

    twd000
    Feeling the Heat 2.
    NULL
    

    Aug 28, 2015
    322
    60
    Loc:
    Southern New Hampshire
    that's interesting; mine doesn't have a manual mode. The only option besides automatic is a delayed-start or countdown timer
     
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  12. fbelec

    fbelec
    Minister of Fire 2.
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    Nov 23, 2005
    2,497
    161
    Loc:
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    you don't have the same model that has a light on the right side for the fan? i looked online and found what was suppose to be your manual
     
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