Question about Aprilaire 550 Humidifier

1 Answer

Aprilair model 760 does not go on

I have relaced the solenoid,cleaned the water feed line, but the unit will not go on.Does anyone have any ideas

Posted by on

  • Chris Parrish May 11, 2010

    does it have the outside stat wired or is it in manual mode?

×

1 Answer

  • Level 1:

    An expert who has achieved level 1.

    Corporal:

    An expert that hasĀ over 10 points.

    Mayor:

    An expert whose answer gotĀ voted for 2 times.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 11 Answers

If you replaced the solenoid yourself make sure that is a 24VAC some solenoid are 120VAC and they look the same. to see if your humidifier is working you can short the 2 control wires coming from the humidifier I think the wires are brown or oa range. if you put then together the hum. should come on if is pluged in, if not then check your outlet see if you have 120AC plug in a lamp to check the outlet, if not your hum.may have a bad power supply you can get one at www.AppliancePartsPros.com/Parts

Posted on Feb 09, 2009

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Model 760 Aprilaire makes a loud noise when running. It almost sounds like the blade is hitting something. Its 10 years old !! I built the house so if you can tell me for sure what it is I'm sure I can fix...


I think you're on the rate track. If it's ten years old the blade and.or the shaft may be worn out. Turn off the water line feeding the humidifier.Turn off the electricity to the unit. Drain the tank, open he tank cover and try spinning the blades with your hand. That way you can tell and see what its rubbing against and if it can be repaired. But, if it's 10 years old, parts may not still be available for that specific model.

Good luck. Hope that helps.

Feb 11, 2011 | Aprilaire 700 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.
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;}
  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

Solenoid on Aprilaire whole house humidifier


the solenoid allows water to flow to jet that then runs down the pad the solenoid is control by the stat

Feb 23, 2010 | Aprilaire 700 Humidifier

1 Answer

How do I know my aprilair 760 humidifier is working?


A simple check you can perform on your aprilaire 760 is the following:
1) locate the two brown wires coming out of the 760 (these wires will be wired to tell the 760 to turn on when the hvac bower is on and the humidistat is calling for moisture).
2) temprarily disconnect the two brown wires from the external wiring and then short the wires together. All you're doing here is bypassing the your thermostat and bower-on indicator.

With the 70 unit plugged in to the wall outlet and the two brown wires connected together, both the fan and the solenoid valve (water inlet valve) should both be activated.

Dec 13, 2009 | Aprilaire 700 Humidifier

1 Answer

When calling for heat and humidity I have 24v at the brown wires going to my Aprilaire, but the solenoid doesn't pick. Is it the control card or solenoid? Both are mounted on the Aprilaire unit. I have a...


If you have 24 volts to the solenoid, then it's not the control card. It's either the solenoid or there's an orifice in the water line at the solenoid that sometimes stops up. To check the solenoid you need to disconnect the power to the system and disconnect the solenoid wires (the two brown wires) and ohm the solenoid. If you get a low ohm reading around 50 ohms or then the solenoid is good and you need to check the orifice. If the ohm meter doesn't move when you ohm across both leads then it's the solenoid and it needs replaced.

Nov 24, 2009 | Humidifiers

1 Answer

Aprilaire Model 560bone dry, water is on, what can I check?


Yes, just check to see if you have 24 volts going into the solenoid. If you do and it is not opening its probably bad. Since you verified the water lines, filter, orifice and saddle valves are not obstructed. Change the solenoid valve. When you price the part. (it's not cheap) consider paying about 30% more and just change the whole unit.
Good luk
HVAC Teacher

Feb 18, 2009 | Aprilaire 600 Humidifier

2 Answers

Water is leaking from the bottom of the unit


The tune up kit that I ordered arrived on Friday and I installed most of it on Friday night. While it is nice to have a new frame and the distribution panel and I think the price of the whole kit was fair considering it comes with the parts and 2 water panels, the fix was really simple.

The kit came with the water distribution tube with with a new blue orifice (Aprilaire #4232) already inserted. This orifice is in the end of the plastic tube at the solenoid end. When I removed the old water distribution tube, the old orifice was not really dark blue anymore but kind of a light blue and was deteriorating from 12 years of exposure to the chemicals in the water. What should have been a pin-hole size opening in the orifice was up to about 2mm or a little more so the orifice was letting way too much water through.

If anyone else has this leaking problem, and your orifice is several years old, I would check that first. It is a $2.75 part and may be the cause of the leak. The whole feed tube kit is only $8.75 and includes the feed tube, nozzle, orifice, ferule, compression nut, strainer so if you need to replace the orifice, I would order the whole feed tube kit for a little bit more.

Hope this helps,
Roger...

Jan 17, 2009 | Aprilaire 700 Humidifier

1 Answer

Water feed tube and nozzel seems to plug


What type of plumbing do you have? Galvanized, copper or pvc?

Dec 15, 2008 | Aprilaire 700 Humidifier

1 Answer

Aprilaire model 760


It could be that the humidistat is not calling for humidity. Make sure that you have the dial turned up all the way (as far as it will go, just to test it) and that the blower on the furnace is running - if the unit is properly wired, the water will not run unless the blower on the furnace is running. This should do the trick. If not, the only other thing would be a bad humidistat. Good Luck!

Dec 14, 2008 | Aprilaire 550 Humidifier

1 Answer

I hear to click of the relay, but no water is feeding into the unit


Sounds to me like the solenoid valve is your problem and it is likely stuck due to sediment. I beleive Aprilaire has superceeded all of their old valves to the part number 4040 (used on all models of aprilaire humidifiers) - anyone who services these units regularly likely has one in stock usually $60 - 100.

Nov 11, 2007 | Aprilaire 550 Humidifier

Not finding what you are looking for?
Aprilaire 550 Humidifier Logo

143 people viewed this question

Ask a Question

Usually answered in minutes!

Top Aprilaire Humidifiers Experts

paulcarew

Level 3 Expert

1863 Answers

Ken Thomas

Level 2 Expert

118 Answers

Mack Baxter

Level 3 Expert

379 Answers

Are you an Aprilaire Humidifier Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...