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Air King Wait 5000 Humidifier will not always shut off water when furnace fan stops....tried all troubleshooting tips in manual.....worked O.K. the first winter....cleaned the furnace filter, replaced the evaporator pad....tried all 3 dip-switch settings for water not shutting off....replaced the solenoid.....NOW WHAT? ....don't want to spend $90.00 hr. for a plumber yet......

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  • Anonymous Oct 22, 2008

    Same issue...what is the fix?

  • Anonymous Nov 16, 2008

    Same problem - eventually leaks like crazy and I have to turn it off

  • scooterboi Dec 02, 2008

    Same problem. The only thing that will shut the water off is to turn down the humidistat to 10% - not a solution. I have an extra wire (female connector) coming out of the hudifier that I think might be part of the issue.

  • Anonymous Jan 13, 2009

    water keeps flowing it does not stop when furnace is off

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My air king 5000 does not go on no green led light comes on it came on the first time i hooked it up and no more after that

Posted on Jan 09, 2010

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Yes, I have a solution ! I had this problem and tried all the dip switch settings mentioned in the manual. Eventually I just watched the heating cycle to see what was going on. It did all work properly, the heat came on, the water came on, the heat went off and the water went off when the air cooled off. But the fan continues to run until the furnace is completely cool. A little while after the fan stopped the humidifier water supply came on again and stayed on till the next cycle. Eventually I figured out what was happening was that residual heat from the furnace was drifting back through the supply duct and was warm enough to re-trigger the temperature switch that turns the water on. The solution is simple. Close down the control blade of the duct on the hot air side to about 50% Now there is less likelyhood of warm air drifting back and re-triggering the flow valve. I don't recall of any mention in the manual of how to set this blade control so I guess most people leave it wide open. Anyway, this worked for me.

Posted on Dec 11, 2009

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I just fixed mine. Remove the solenoid and coil from the unit. Disconnect the 24VAC electrical and plumbing etc. remove the lock from the coil (black part). Its a "U" shaped clip device. This should allow the solenoid to come free. Remove the two screws from the base of the solenoid. Now the armature pin should come out. Inspect the base (within the solenoid). It has a raised "nipple" where the rubber of the armature "seats" itself. In my case, it had disintegrated on one side, causing a bad seal when the armature was "closed". Take a small grinder tool and very carefully, grind this (nipple within the solenoid base) so you have an even "face" for the rubber piece of the armature to "seat" against. Reassemble...
enjoy 1) not pouring water down the drain 2) teaching yourself a bit about solenoid valves etc 3) getting to play with your tools. 4) not spending $60+ for a new one of these things 5) experience in knowing how to disassemble/fix it the next time
Cheers

Posted on Jan 29, 2010

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Http://www.airkinglimited.com/airking/admin/article_instructions/5000IO.pdf

Here's a link to the install manual.

Check out the section on setting the dip switches, it may help.

Posted on Dec 29, 2008

  • 905benchguy Dec 29, 2008

    The link I posted before is not exactly what I thought it was but it still may be of use.



    If I find the actual manula I'm looking for I will pass it along.

  • brford Jan 19, 2013

    yes, apparently for mine and most furnaces, the middle one should be one and the others off. but even then i seem to need to set it to above 50% to go on at all. i will check the selenoid.

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I had same problem and found solenoid valve was fault. What was the valve seat was corroded so bud plunger was not able to shut water off. need to replace solenoid valve assembly. Or buy new one!? Tom

Posted on Feb 27, 2011

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While installing the Wait 5000 Humidifier, can you use the 24 volt transformer from the previous Humidifier or do you have to use the transformers provided with the Humidifier

Posted on Dec 05, 2009

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J-

I had this problem several years ago. In order for the water to flow, the outside temperature sending unit must indicate to the controller that it is less than 60F. If not, the unit will not operate outside of test mode. Check the temp outside where your sending unit is (could the sun be heating that side of the house?) and ensure that the circuit to the sending unit is working. I had a bad wire splice inside a wire nut stopping the circuit. Took me a long while to figure it out.

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