My humidifier control is not working so well…what should I do?

Consumer questions:
The automatic control for my aprilaire model 600 is malfunctioning. To get it to work, I have to only move the knob slightly, but the next time the furnace kicks in, I will have to do this all over again. So basically, the unit is malfunctioning. What do I do?
Aprilaires' response:
Thank you for your email regarding your model 600 Aprilaire humidifier. The automatic humidifier control will operate your model 600 to achieve the set point the dial is set to. Once the set point is reached, the humidity level in your home has to fall below the set point before the humidifier control will again operate your humidifier. When you move the humidifier control dial to a higher setting, the humidifier will operate provided the furnace is running. This is normal operation. Based on the information you proved your automatic humidifier control is working as designed.

3 thoughts on “My humidifier control is not working so well…what should I do?

  1. Harendra rathod

    My humidifier control seems to be malfunctioning, the humidity in the house shows LO% , however I do see the water does come on the filter. I changed the filter element but the humidity still shows LO%

  2. Thomas Pappavaselio

    I have a 3100 sq ft home heating with a greenspeed carrrier heat pump and an Aprilaire whole house humidifier which is one year old and only can get humidity to 23%. It is set to 45%.
    Please advise.

    1. aprilaireadmin

      Thank you so much for contacting us. Unfortunately I do not have enough information to provide an answer.
      What would help would be to know , which model humidifier you have installed, where it is installed, does it run with only heat, or heat and fan and lastly whether you have it connected to hot or cold water.
      Hopefully we can find a solution for you. Please give us a call M-F, 7 – 5 CT, 1-800-334-6011.


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