Question about Aprilaire 600 Humidifier

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Aprilaire 600 I need to know why the control panel keeps clicking off, won't work in test mode either? Have power but none of the LED will stay lite when the blower comes on.

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Re: Aprilaire 600

Chech to see if the out door sensor is hood up,also take off the small panel you will see a small switch make shure it is in the correct position baypass or power. being a AP 600 it should be in the baypass mode. Hope this helps

Posted on Jan 18, 2008

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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

Solenoid valve won't open

Check for 24v.hum transformer shuold interlock/power up during blower motor hearing speed operation.Make sure its running.also manual mode resistor has to be installed in control panel.a blue plastic tag w/2 ends.

Mar 15, 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

The red light is always on in my humidifier control panel. When I set it to test, I hear nothing clicking. No water runs into my humidifier. The unit (model 600) is about 6 years old.

if your using an outdoor thermostat then it may not be connected properly or the manual mode resistor wires are touching. these are connected on the humidistat just to the right of the H H terminals

Dec 12, 2009 | Aprilaire 600 Humidifier

1 Answer

Water only runs with humidistat in test/reset mode. Aprilaire 600 with an Aprilaire 56 Automatic Humidistat, both about 5 years old. Water line is clear, and test mode runs fine for the 1 minute interval....

you need to make sure your humidity level in the house isnt higher then what your humidifier will provide at any givin outdoor temp. this chart is in the owners manual. you cant remove the wires going to the ODS or it will give an error unless you have a resistor to put in its place. Anyway if the humidifier works in test mode according to AA it works so you may have higher humidity than you think, the highest your gonna get is 45% as the temp outside drops it will allow less humidity so it doesnt cause window condinsation (property damage) here is a copy of the chart. the #s on the left are the dial setting
TABLE 2 – % Relative Humidity Guide
Outdoor Temperature (°F)
-10°F 0°F 10°F 20°F 30°F 40°F
10% 10% 10% 15% 20% 25%
2 10% 10% 15% 20% 25% 30%
3 10% 15% 20% 25% 30% 35%
4 15% 20% 25% 30% 35% 40%
5 20% 25% 30% 35% 40% 45%
6 25% 30% 35% 40% 45% 45%
7 30% 35% 40% 45% 45% 45%

Nov 28, 2009 | 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

3 Answers

Aprilaire 600 - change water panel light stays on

Turn the control knob to the test/reset position untill the change water panel light blinks to reset the change panel timer. Make shure the furnace is running calling for heat.Turn control knob to prior setting after resetting timer. Hope this helps.

Feb 16, 2008 | Aprilaire 600 Humidifier

1 Answer

No water at all

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

If it does check that restrictor is not blocked

Jan 19, 2008 | Aprilaire 600 Humidifier

3 Answers

Aprilaire 600 only operates in test mode...

Call Aprilaire and tell them, this is happining everywhere

Dec 05, 2007 | Aprilaire 600 Humidifier

2 Answers

Aprilaire 600 humidifier solonoid valve chattering in sync with d10 led

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:

Oct 12, 2007 | Aprilaire 600 Humidifier

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