Question about Aprilaire 600 Humidifier

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Aprilaire 600 doesn't seem to be running at all

I replaced the water dispersion mesh assembly on my Aprilaire 600 a few weeks ago while converting my heating system back to it's winter mode and noticed the previous unit showed very little calcification. I made sure the water supply valve is open, the unit is turned on, and the humidity level set on the control unit. After 3 weeks I checked the unit and acn find no evidence water is running through the unit or it is providing any humidity to my system. I don't know what else to check.

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2 Answers

If you determine that you don't have a water issue. Remove cover to humidistat and check for 24V AC across the AA terminals. This controls the relay. No 24V, water will not flow.

Posted on Dec 05, 2007

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  • 298 Answers

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

Posted on Nov 21, 2007

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1 Answer

Coating from water panel pad clogging furnace filter


I know of no answer to this except to remove the coating manually to prevent it clogging you filter.

Jun 22, 2017 | Aprilaire 600 Humidifier

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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.
Sincerely,


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 will not turn on


http://www.aprilaire.com/themes/aa/en/manuals/600a.pdf here's the link fo the manual. read page thirteen about the inline screen that the unit has. it may be clogged up.

Jan 10, 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

1 Answer

Humidifier won't turn on with furnace fan set to Auto.


There is a devise called a current sensing relay (a little black box that hangs on a blower motor wire that senses current from that wire) If you have such a devise it should hang from the white (common) wire. Loop the wire through twice.

Nov 23, 2008 | Aprilaire 600 Humidifier

2 Answers

Aprilaire 600 Humidifier


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.

If the outside temp and your sending unit circuit is ok, I wish you luck on your troubleshooting.

adx_98

Nov 10, 2008 | 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

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

Aprilaire 400 - Mesh Screen not wet


Not happy either. I bought 3 Aprilaire 400 for my house (3 zones). I picked this style since I have attic installation and did not want to run drains. The first night I expected a major air quality improvement but no change in humidity. I have installed humidifiers before so I know the drastic improvement they make. So I watched for a season and still no humidity improvement. Absolutely nothing at all. Same exact observation as you all described. Only the bottom of the media was wet. I'm dissatisfied with Aprilaire 400. Do not buy! Since I installed humidifiers before and understand them I am converting the Aprilaire 400 to work like a Aprilaire 600. I simply unwired the float sensors, removed the floats/lid and using a knife cut some of the plastic cups so the water would drain well. I also cut open the plastic exit port some too so it wont clog from dust globs. I obviously added drains. HUGE RESULTS. On the very first cycle on the humidity in that zone went from 25 to 48. I am watching carefully. -GK

Dec 31, 2007 | Aprilaire 400 Humidifier

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