jgriz
join:2008-12-10
Saint Charles, IL
| reply to CCat
Re: Aprilaire 760 Whole House Humidifier
If the valve is "clicking" then the coil is OK and the armature inside is being drawn up. That is the clicking you hear. You can check the coil for continuity using an ohm meter. You can also verify that by holding a screwdriver above the coil when the valve is energized. If the coil is good, the screwdriver will be attracted to the top of the coil.
There are some small passages inside of the valve that may have gotten clogged with hard water deposits during the off season. The valve can be disassembled. The nut on top of the coil comes off, then the coil lifts off. The metal cylinder under the coil that is part of the valve is called the guide tube. There is a slot on top of the guide tube that you can twist counterclockwise with a screwdriver to remove it. All that is inside is a metal armature that has a rubber piece on one end and a spring. When the coil is energized, the armature lifts up against the spring and pulls the rubber tip off of the body seat opening the passageway. Once it is disassembled, you can explore the passageways of the valve to see where it is clogged. |
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Warzau
Premium
join:2000-10-26
Naperville, IL
clubs: | Ohhh I am bookmarking this. |
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CCat
Purrplexity
Premium
join:2005-12-06
Wonderland | reply to jgriz
Great respose. Thanks very much for the how-to. |
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Doug45
join:2002-08-27
Wheaton, IL | reply to jgriz
I agree with Warzau and CCat: This is great information! |
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