The filter on my Aprilaire model 600 humidifier doesn’t seem to be filling with water.

Consumer question:

The filter on my Aprilaire model 600 humidifier doesn’t seem to be filling with water. Nothing has changed since the last season and the setting is at 5.

Aprilaires’ response:

If it is set at 5 that is equivalent to about 35% humidity. So if the current humidity level is higher than that it would not be running. An easy way to tell is to turn the unit to test reset (turn it past 7 and the humidifier on light should begin to blink with our 58-60 control) This should turn the humidifer on and it will run for approximately one minute. If this happens the unit is functioning normally and then when you turn it back to 5 it should come on , if the HVAC is running and the humidity falls below 35%.

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