Fan failure a possibility?

Thursday, March 4, 2010 by Aprilaire Team
Question submitted to Aprilaire:

I have the Aprilaire 700 model (several years now) & we noticed our RH was very low. While the solenoid activates & water is running, I found the fan never activates now. I even tried the "test" mode & it would activate. I am thinking since the water solenoid is working the control panel should be OK and I have a fan failure. Is there some way I can verify this. And I didn't notice replacement fans here on your site. Please confirm for me.


Aprilaires' Response:

By what you are stating, when you put the controller into test mode, the fan will come on with the water flow.  But, for normal operation only the water flows?

Since the fan does come on in test mode, but the level of RH is low in your home, anyone would question the fan at this point.  Why wouldn't it come on for normal operation.   Or, is the fan ok, and the solenoid is open too much?

As you are aware, proper operation calls for both to be working at the same time.  The fan running when the solenoid is open.

We do not sell these type of parts online.  You would need to get these from an HVAC technician.  Also, they would best be able to determine which is the problem and would need to be replaced.


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