Question about Aprilaire 700 Humidifier

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Aprilaire 700 using too much water-------

My Aprilaire 700 is producing about 1 gallon of water/minute of operation-whats wrong?

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There is a small oriface that is installed next to the solenoid valve. It sounds like this oriface is missing. It reduces the water flow through the humidifier when it is working properly. You should be able to disassemble the solenoid fittings to check and see if the oriface is in the water line. For a "temporary" fix regulate the water pressure down by closing down on the saddle valve.
Good luck
HVAC Teacher

Posted on Mar 08, 2009

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I have an Aprilaire 700 unit it vibrates when the water solenoid turns on how do I fix it


You gotta remember that the 700 also has a fan that blows air through the water filter/grate. The fan could have a warped blade and thus vibrates when rotating. Although there could be nothing wrong with this unit at all as it is not unusual for any solenoid to vibrate when it's engaged. Could could replace it if you'd like. EBay is your best source. But your posture should really be 'if it ain't broke, don't fix it.

Jan 13, 2015 | Aprilaire Humidifiers

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Aprilaire 700 water never shuts off


the float may be bad or sticking allowing water to run continusly even when unit is off.

Nov 06, 2013 | Aprilaire 700 Humidifier

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Replaced water panel and the light keeps blinking to change it agai...model 700


Sorry to read about your problem, I hope this helps you out.
did you hit the reset

Digital Humidifier Control (Model 700): (Automatic or Manual mode) Check system operation and reset Change Water Panel indicator by setting the knob to "Test/Reset". With HVAC blower operating and HVAC calling for heat, humidifier will operate for one minute. DO NOT LEAVE IN TEST MODE AS HUMIDIFIER WILL NOT OPERATE.

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Dec 29, 2010 | Aprilaire 700 Humidifier

1 Answer

Not working


HI, Troubleshooting an Aprilaire Humidifier

Aprilaire, a manufacturer of indoor air quality products including thermostats, air cleaners and dehumidifiers, also offers a line of whole house humidifiers. Installed in your existing heating and cooling system, humidity is produced by a supplied water source that flows over a water panel before being distributed throughout your air through the heating and cooling system. Issues you may need to troubleshoot with your Aprilaire humidifier include error messages and the unit producing too little or too much humidity.

Things You'll Need:

Replacement water panel


Turn down the control dial by one setting if condensation appears on your windows or walls.


Turn up the control dial by one setting if there is a lack of humidity, often indicated by dry skin or peeling wallpaper or paint.


Turn the control dial to "Test/Reset" if the humidifier does not run. Verify the heating and air conditioning unit blower is operating. If the heating and air conditioning unit is not operating or you are unable to resolve the issue contact a heating contractor.


Contact a heating contractor if you turn the control dial to "Off" and the humidifier continues to run.


Contact your Aprilaire dealer (see Resources) if you notice an error code on the display and the "Call Dealer for Service" light flashes.


Turn the control dial to "Off" and turn off the water supply if the yellow "Change Water Panel" light flashes. Lift the front panel off of the humidifier. Slide out the water panel. Insert a new water panel. Replace the front cover. Turn the control dial to "Test/Reset" until the "Humidifier On" light flashes. If you feel uncomfortable changing the water panel, contact a heating contractor.


Tips & Warnings

Purchase replacement water panels through your Aprilaire dealer or a heating contractor.



You can get parts from the link below:

arnoldservice.com/humidifier_parts.htm


Hope it helps.

Thanks for using fixya....

Nov 17, 2010 | Aprilaire 700 Humidifier

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Loud clicking and banging, A700 doesn`t work


You have a faulty humidistat

Greg Sunsetmech

Dec 13, 2009 | Aprilaire 700 Humidifier

1 Answer

Aprilaire 700 water panel light won't reset


the solinid may be stuck or the humistat is wired wrong

Jan 16, 2009 | Aprilaire 700 Humidifier

2 Answers

Aprilaire 700 humidifier not adding any humidity


Thanks for your Question,
Sounds to me like you have a calcium build up in the Solenoid, which is restricting flow to the unit for proper operation, you might even have a bit of restriction in the copper line feeding the Solenoid, replacement of the solenoid would probably take care of your problem, one quick tip, in the spring and summer months, its a good idea to shut the water off to the unit, this should make the Solenoid last a little longer, hope this was helpful to ya, please let me know, thanks again,
mr.grzz

Jan 12, 2009 | Aprilaire 700 Humidifier

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Aprilaire 700 operating at wrong time


You want the humidifier to run in heat mode which is the r-w1 terminal on the stat.

Nov 17, 2008 | Aprilaire 700 Humidifier

1 Answer

Water panel light


The reset is to place the controller in the "test/reset" position. The furnace must be in heat mode and operating at the time. The green light will blink for about 1 minute if operating properly, then cut off when placed in a normal setting.

Oct 19, 2008 | Aprilaire 700 Humidifier

1 Answer

Humidifier control .


if humidifier was wired into thermostat circuit for power instead of seperate transformer , this can happen. you need to see if you voltage going to the solenoid valve. if you do , and it isn't opening, the valve is bad . this is assuming that it is using a # 50 relay to come on only when the fan runs . . make sure the water valve is open

Dec 24, 2007 | Aprilaire 700 Humidifier

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