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Thread: Exhaust Fan on 4U RPM Module

  1. #1
    Junior Member
    Join Date
    Apr 2017

    Exhaust Fan on 4U RPM Module

    QS Designer program allows switched fan loads to be assigned to 4U modules. Ideally, they should be on switch modules, but if an exhaust fan is assigned to a forward-phase module, does the module treat that load differently than a light load (other than changing the ramp times to the minimum setting)? Does it have the ability to bypass the dimming engine? And, another question would be: "would the fan be harmed in any way if assigned to a dimmer" (as it is a motor).

    Thanks in advance.


  2. #2
    Super Moderator
    Join Date
    May 2013
    Hello Toslink,
    Thank you for your post.
    This appears to be an oversight in the software. The RPM-4U is not rated to control a fan load type. I have let our development team know of the software issue.

  3. #3
    Senior Member
    Join Date
    Sep 2014
    Do we have the same issue putting an exhaust fan on a 4A module set to non-dim?

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