Question about Aprilaire 600 Humidifier

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Orifice clogs to Aprilaire 600

Aprilaire 600 has worked well but not humidifying now (water drips out).. Home water is softened yet getting deposits in the orifice. Installer never put in inline filter. I've cleaned the orifice and it worked for a while, now clogged again. If I permanently remove the orifice, will there be enough water pressure to run through the unit? Could I simply adjust the water line to decrease water flow if too rapid? Has anyone installed an inline filter used for ice makers to remove deposits?

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To directly answer your question...yes, you can run the unit with the orafice removed and control flow through the saddle valve. The manual states not to do this but it works very well. Adjust the saddlevalve so you have nice slow solid water flow and your evaporator will always be wet. The orafice "limits" water flow...it does not increase it.......I have mine removed...and like your system the installer never installed the inline filter either. I have the water supply tapped into the hot water line, after the water softner....now I can use the humidifier on my variable speed Trane XV90...even when there is no call for heat ( unit runs as long as blower fan is operating...thus the evaporator never dries out.

Posted on Jan 19, 2009

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Http://www.aprilaire.com/themes/aa/en/manuals/600a.pdf look at page thirteen in this manual there is allready a inline filter on the unit. hope this helps

Posted on Jan 11, 2009

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1 Answer

No water flow


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.

Oct 31, 2013 | Aprilaire 600 Humidifier

1 Answer

My Aprilaire 600 is dripping from the front toward the bottom... Can I fix it myself or do I need my maintenance guy?


Hello, check to make sure that the drain line is not blocked, this could cause the water to back up in the humidifier and leak, also make sure the water panel is clean and free of any mineral deposits.

Feb 09, 2011 | Aprilaire 600 Humidifier

1 Answer

Aprilaire 600 was leaking water from bottom of unit...subsequently filter pad replaced and all parts cleaned of residue; drain tube cleaned and is draining...The problem is that water is still dripping...


Sorry to read about your problem, I hope this helps you out.

you must have a defective water inlet valve, and its letting water in, just a little.. it maybe dirt in the valve, clogging it.

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Jan 01, 2011 | Aprilaire 600 Humidifier

1 Answer

760 aprilaire humidifier does not let water to the filter. I have cleaned and checked the lines in and out of solenoid.


Normal 0 false false false MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman"; mso-ansi-language:#0400; mso-fareast-language:#0400; mso-bidi-language:#0400;} Your Aprilaire Humidifier is designed to operate in conjunction with your furnace blower motor. Most installers wire a humidifier to operate when the furnace is calling for heat. To determine if your Aprilaire Humidifier is maintaining proper humidity, turn up the heat temperature 5 degrees above the current room temperature on your thermostat and set your humidifier control to call for humidity. The humidifier control is located on the cold air return duct. To set your humidifier control to call for humidity, turn the control dial to the off position and slowly rotate the dial until you hear a “click” on the control. You should also hear a click at the solenoid valve located on your Aprilaire unit. The humidifier control will have a click point at the current relative humidity level in your home. If the current relative humidity is 45% or the outdoor temperature is above 60F, the control will only operate the humidifier in the test mode.
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  1. No click at the solenoid valve indicates an electrical problem. Contact your heating and air conditioning dealer to further check the electrical components of your Aprilaire Humidifier.

  1. The click sound at the solenoid valve indicates there is electricity to the solenoid valve. By turning the dial of your humidifier control to a setting above the “click point” you should see water coming out of the drain line within a few minutes which would indicate your humidifier is working.

  1. If the solenoid valve makes a click sound and there is no water draining from the unit, this would indicate the flow of water is being obstructed.

1. To determine if water flow is being obstructed, turn the dial of your humidifier control to the off position. The first location you would want to check for an obstruction would be at the saddle valve located on the water line supplying water to the humidifier. When checking the saddle valve, you want to make sure it is completely open. This can be done by turning the valve all the way to the left. If anything is clogged, it can be dislodged by turning the saddle valve all the way to the right and back to the left. Once this is done, turn the humidifier control dial above the click point and you should see water coming out the drain line.


If water is still not coming out of the drain, check the orifice and in-line strainer to make sure they are not clogged. The orifice is located in the tube on the discharge side of the solenoid valve and the in-line strainer is located on the inlet side of the solenoid valve. You may clear the orifice by inserting a needle through the small opening. Clean the strainer by running it under warm water to dislodge deposits or replace. After clearing and re-installing the orifice and strainer (be sure to double wrench all water connections), turn the humidifier control dial above the click point and you should see water coming out the drain line.

Mar 10, 2010 | Aprilaire Humidifiers

1 Answer

No water running into aprilaire I NEED TO FIND WHERE THE COMPRESSION NUT IS ON THE DOLENOID SO I CAN CLEN THE ORIFICE


I CALLED A REPAIR MAN THEY ARE COMING OUT Tuesday. I went to their business place and they showed me where the orifice is. They also told me because I have well water I need a filter on the line to keep the orifice from clogging which they are going to do and I will be able to change it myself.

Jan 05, 2010 | Aprilaire 550 Humidifier

1 Answer

When the system calls for heat My Aprilaire 700 fan turns on, but the solenoid doesn't open up. The indoor humidity is around 35% now, outside temperature was around 35 with relative humidity of 75%. In...


do you hear a clicking at the solinoid? grab the solinoid and turn it on to see if its getting voltage, you should feel it energize. you can turn off the water supply and disconnect the water line from the solinoid. there is a black pre screen inside the inlet if you have a tiny flat heat screwdriver insert it into the inlet and turn it out. clean it and retry. you can also make sure the orifice isnt clogged its located on the outlet side of the soliniod. when you remove you will probably have a stream of water come out of the feed tube thru the orifice, even if it has sat all summer. if water comes out you dont have a clogged orifice. donot try to **** out the orifice if its clogged you will need to get a new one fron www.aprilaire.com . you can verify it clogged by after cleaning the prescreen reconnect the water line inlet and turn on humidifier if water comes thru the solinoid with the outlet feed tube not connected then the orifice is clogged. If you clean the prescreen and the orifice is fine ,still no water then you will need a new solinoid you should also be able to purchase from aprilaire. here is links to the solinoid and orifice

http://estore.aprilaire.com/catalog/humidifiers/all-humidifier-parts/299

http://estore.aprilaire.com/catalog/humidifiers/all-humidifier-parts/267

hope this helps,
Mac

Nov 07, 2009 | Aprilaire 700 Humidifier

2 Answers

Water drips from unit


lift the frontup2 inches should drain out back if not blocked
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Aug 17, 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

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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

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1 Answer

Aprilaire 110


Modle 110 has a relay in it see if it is stuck.Hope this helps

Nov 05, 2007 | Aprilaire 600 Humidifier

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