20 Most Recent Aprilaire 600 Humidifier - Page 2 Questions & Answers

Check all wire connections for tightness. Those solenoids on the humidifiers will eventually need to be replaced. Try turning the dial all the way up to the test position if it is still clicking you may just need a new solenoid.

Black mark goes up

Goes up usually. If there is a yellow one it goes up. they usually just mark the top side intended to point upwards. The mesh material has little "u" shaped cups to slow the water from running straight down and out of the drain. Also when you get it going make sure you are not draining more than a liter of water every 5 minutes otherwise you are ready for a new feed tube and orifice to regulate the water flow properly. Good luck!

if you hear the solenoid click then you may have a clogged orifice or prefilter. these are both located near the solenoid. the orifice is usually in the feed tube and the filter is in the inlet of the solenoid. Try the orifice first to see if it is clogged. If that is clear the try loosening the compression nut before the solenoid to see if you have water coming to the humidifier some times if a needle valve was used they get bad also. I would recommend changing the needle valve out and putting in a proper side stop valve. Most municipalities do not allow needle valves per there codes.

Sounds like the solenoid valve on your humidifier is stuck in the open position. Shut off the water supply to it from the saddle valve on the cold water pipe as a temporary fix.

Check to you have 24 volts at transformer, if so then the problem could be the humidistat, if not the transformer is bad.

Check if there is power to the solenoid valve, if ther is , then the solenoid is bad and must be replaced. If there is no power could be a bad humidistat or transformer.

I have seen some humidifiers do this becuase of high water pressure. Try closing and opening the saddle valve and see if it helps at all.

I fixed my problem by ordering a new control unit (model 56) from IAQSOURCE. Installing the control unit took a few mintues, and once the new control module was installed, I've had no more problems. The URL is as follows: http://www.iaqsource.com

Hello, no the humidifier does not have a power cord. It needs to be wired to a transformer to provide 24 volts to power it.

Hello, i would wait untill fall when thebheatingnseason will begin. Most likey you will be using your ac soon anyway.

Hi,

That problem is in the humidistat or the control that you use to adjust the humidity setting...

The control probably was left at that setting ofr a long period of time and now it will not work at any other setting...
Replacement of the control should not be all that hard...you should be able to do it your self.. just make sure to mark the wires before you remove them...
If you ccan find a control that is exactly the same as what you have it will also make the job easier..

heatman101

Hello, check to see if you are getting 24 volts to the solenoid valve, if you are and the solenoid does to click to let the water in it must be replaced. If you are not getting 24 volts start at the transformer and work your way toward the solenoid valve to find where the voltage stops.