Question about Aprilaire 700 Humidifier
I have been hearing a loud knocking noise in my furnace area when the aprilaire 700 is set to on. what is the problem and how do i fix it?
I have had the same problem , off and on, on my two 700 units for over 4 years. It is caused by water hammer which results when a water solenoid valve closes quickly under pressure. Refer to your owners manual or get a copy of it off the internet. Note the areas where they tell you to remove and clean the inline water strainer and the inline orifice restrictor. These are VERY small components and can clog up easily so they need to be cleaned per the manual. While cleaning them won't totally eliminate the problem it has helped mine with the noise. You really need to have a qualified person, like a plumber, install a small, water hammer arrestor in the inlet line. The trick is to be sure it ends up parallel to the water line flow and not perpendicular to it.... a common mistake. If you are not qualified to work on solenoids and piping, don't do it......it will end up costing you more to repair your mistakes. Good luck
Posted on Jan 15, 2008
A 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
The service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
Feb 05, 2010 | Aprilaire 700 Humidifier
Feb 03, 2010 | Aprilaire 550 Humidifier
Dec 31, 2009 | Aprilaire 700 Humidifier
Dec 17, 2009 | Aprilaire 550 Humidifier
Apr 06, 2009 | Aprilaire 700 Humidifier
Feb 05, 2009 | Aprilaire 700 Humidifier
981 people viewed this question
Usually answered in minutes!