My Aprilaire 600 appears to be operating properly, however,the humidistat never registers above a "1". FYI-The unit is attached to the intake ductwork and the humidistat is also mounted on the intake ductwork.
There are 3 things to check on the humidifier. Check the metal mesh screen, is it wet after the humidistat is call? If it is dry the water solenoid my not be opening or the nozzle is plugged. The circulating fan blows air through the wet screen to add humidity. Does the fan spin when the humidistat is calling? There is an intake and exhaust on the humidifier. Check that the metal was cut out properly when the humidifier was installed to allow air to feely circulate?
Posted on Sep 24, 2007
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Mine seems to run fine but the humidity is my house is unchanged. Water is going in - mesh is wet, air is blowing through. - etc. but humidity unchanged in house. Can't figure out what could be wrong
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