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Aprilaire Model 560bone dry, water is on, what can I check?

Model 560 worked last year. I noticed there was no codensation after I cranked up the humistat all the way. Opened the panel and the entire unit is bone dry. Cleaned filter, nozzle, feed tube, orifice, etc...
I onlu want to change the solenoid if I have to. Can I run Volt/Ohm testing to see if the solenoid is working?

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Yes, just check to see if you have 24 volts going into the solenoid. If you do and it is not opening its probably bad. Since you verified the water lines, filter, orifice and saddle valves are not obstructed. Change the solenoid valve. When you price the part. (it's not cheap) consider paying about 30% more and just change the whole unit.
Good luk
HVAC Teacher

Posted on Mar 08, 2009

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Dear Reader,

If you visit aprilaire.com, you can go to the "OWNER'S CENTER" tab at the top of the page. With the cursor on "OWNER'S CENTER", more options will appear. Click on the "OWNER'S MANUALS" option. Scroll down to the bottom of the page and you'll get to a list of our older model humidifiers. Click on the first link which includes your model 560. By clicking on this link, you will be able to download the owners manual for your 560. On page 16 of this manual will be the step by step instructions explaining how to perform the water panel change.

If you have any further questions regarding this or any of our products, please feel free to contact our customer service department 800-334-6011 at your earliest convenience.

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http://www.aprilaire.com/themes/aa/en/manuals/Humidifiers_Owners_Manual.pdf

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