Model 350 Aprilaire humidifier is cycling on and off every second or so, gives a clicking or slight hammering effect.

Monday, January 3, 2011 by Aprilaire Team
Consumer question:

Model 350 Aprilaire humidifier is cycling on and off every second or so, gives a clicking or slight hammering effect.  I tested the humdistat by putting the wires together and this continued.  I'd like to know if the solenoid seems to be the problem? Also, we do have hard water where we live.


Aprilaires' response:

Thank you for contacting us regarding your model 350.  From the way you described, if you've bypassed the humidistat and the solenoid still acts erratically, then the problem may be with the solenoid.  We would recommend that you contact your contractor to check the solenoid operation and possibly replace it. 

Your hard water may have played a role in this problem.  Regular maintenance is recommended to keep the solenoid clean, especially in areas with hard water.

If you have any further questions regarding this or any of our products, please feel free to contact our customer service department at your earliest convenience.


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