Question about Aprilaire 600 Humidifier

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No water at all

Hi, I am not handy and recently acquired my home with the Aprilaire 600. I can't get any water to come through on any mode. Please help.

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  • madtownman Jan 22, 2008

    thank you. I ended up calling aprilaire and we figured it was the humidistat #56 panel that was bad. They had me take a set of red and white wires and pair it up with another to bypass the panel and then it worked.



1 Answer

Does the solenoid click when in test mode, if not check power to panel/solenoid.

If it does check that restrictor is not blocked

Posted on Jan 22, 2008


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1 Answer

I replaced the water panel on our aprilaire 600 humidifier. I adjusted the thermostat to call for heat to test it. When the dial (non-digital control panel for the humidifier) is turned to test/reset,...

Thank you for contacting us with regards to your model 600 Humidifier. The Change Water Panel indicator should flash when the control knob is set to the Test/Reset mode. The flashing indicates that the timer has been successfully reset. However, the humidifier should operate for the first 60 seconds of Test mode as long as your furnace is running. If your humidifier does not turn on, contact your installer. The humidifier may require service.
We appreciate the opportunity to be of assistance.

Brett Phillips
Technical Support
Research Products Corporation

Nov 01, 2010 | Aprilaire 600 Humidifier

1 Answer

Water does not seem to be going through the unit

With the heat on, turn control knob back&fourth from test.U should here a click each time.If no click check hum transformer power.If it clicks flush out water supply pipe poss cloged.

Feb 27, 2010 | Aprilaire 600 Humidifier

1 Answer

Aprilaire 600 humidier: water continuously runs

sounds like you may have it wired to a continuous power source vs one that shuts off with the furnace. The most common wiring is red to C & white to W

Jan 08, 2010 | Aprilaire 600 Humidifier

1 Answer

Testing a Aprilaire Humidifier 600 Controller

if it works in the test mode then it should be okay but you can get a humidity gauge from radio shack and set in the house to see how high or low its is. the humidifier is only going to give a max of 45% humidity

Nov 27, 2009 | Aprilaire 600 Humidifier

1 Answer

Aprilaire 600: water only runs in "Emergency" Heat mode

When your unit is on normal the outside unit works and the inside only the fan runs. your heat pump does not remove any humidity when it operates so the installation cotractor did not wire it to operate then. you can change the wiring on the humidifier to operate all the time by wiring it to the fan (g) terminal then it should work just turn it all the way to the lowest humidity when you are in cooling mode.

Jan 07, 2009 | Aprilaire 600 Humidifier

2 Answers

Orifice clogs to Aprilaire 600 look at page thirteen in this manual there is allready a inline filter on the unit. hope this helps

Jan 06, 2009 | Aprilaire 600 Humidifier

1 Answer

Aprilaire 600 bypass water flow rate

The water is only dispensing over the evaporator pad while the furnace is in the heating mode. When the furnace finishes cycling the humidifier will also stop.

Mar 04, 2008 | Aprilaire 600 Humidifier

1 Answer

Aprilaire 600 not getting a Solenoid click and no water flow at all

Your solenoid may have seized. The best way to check is remove the cover off the humidifier pad housing, remove the rubber tube of the distribution tray and see if water comes out while in the test mode. If you have a volt meter you can test to see if you have 24volts at the two wires connected to the solenoid. If you have 24volts there but no water ,the solenoid is bad if not you may have a bad humidistat or humidifier transformer depending on how it is wired.

Feb 10, 2008 | Aprilaire 600 Humidifier

2 Answers

Aprilaire 600 doesn't seem to be running at all

check list
1.check the clamp on the pipe where water line connects
is the hole clogged (water turned off)wont take long
2.Is water flowing all the way to resevoir after turnnig water on
loosen line at reservoir
3.jiggle float water should enter the reservoir inlet to float valevel
somestime cake up,clean float off
4.Remove pump cap clean impeller and standpipe
5.clean reservoir,and close everything up

Usually the hole in the pipe is clogged up in step 1 or the float is sticking if there is no evidence of water in the reservoir

Nov 20, 2007 | Aprilaire 600 Humidifier

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