Aprilaire 700 Humidifier Logo
R
Richard Kalagher Posted on Nov 29, 2013
Answered

I have an Aprilair humidifier that started making a loud humming/buzzing noise. The water runs OK but the soloniod is burning hot to the touch. Is this normal?

First I thought it might be the motor, but now I suspect the solonoid.

Answer This Question

1 Answer

dustin358

Level 1:

An expert who has achieved level 1.
Hot-Shot:

An expert who has answered 20 questions.
Corporal:

An expert that has over 10 points.
Mayor:

An expert whose answer got voted for 2 times.

  • Contributor 30 Answers
  • Posted on Jan 05, 2014
dustin358
Contributor
Level 1:

An expert who has achieved level 1.
Hot-Shot:

An expert who has answered 20 questions.
Corporal:

An expert that has over 10 points.
Mayor:

An expert whose answer got voted for 2 times.

Joined: Nov 24, 2008
Answers
30
Questions
0
Helped
15109
Points
45

Yeah they do need to be replaced from time to time. Make sure you get a water test kit and check your water hardness. You may need a whole home water filter if it is outside of normal ranges. A pretty easy DIY project and relatively inexpensive at the big box stores

5 Related Answers

Lou Barta

  • 189 Answers
  • Posted on May 10, 2009

SOURCE: Aprilair 760 Humidfier will not stop water flow to EV panel

If the water continues runs nonstop even when the heater is turned off, you might have either a bad solenoid valve or a bad humidistat. Simply disconnect one of the two low voltage wires going into the unit. If the water turns off then your problem is most likely your humidistat or the low voltage wiring. If the water continues to run even when the low voltage is disconnected you have a defective solenoid valve.
Good luck.......

Ad

Anonymous

  • 1 Answer
  • Posted on Dec 29, 2009

SOURCE: 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.

Ken Thomas

  • 118 Answers
  • Posted on Feb 04, 2010

SOURCE: Loud vibrating noise when the furnace blower starts up.

Try closing damper slightly between humidifier and furnace????

Anonymous

  • 8 Answers
  • Posted on Feb 19, 2011

SOURCE: My aprilair's humidifier motor began to make loud squealing noise

Put some lubricant, oil, WD40, etc. on shaft of fan. Spin the fan with your finger and work the oil into the shaft until the fan spins freely again. Reassemble and problem will be gone for 2-3 weeks. Repeat again until you want to replace the fan motor.

Robert

  • 1036 Answers
  • Posted on Mar 08, 2011

SOURCE: I have an AprilAir 600

Hello, check to see if you are getting 24 volts to the solenoid valve, if you are and the solenoid does to click to let the water in it must be replaced. If you are not getting 24 volts start at the transformer and work your way toward the solenoid valve to find where the voltage stops.

Ad

Add Your Answer

×

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

0helpful
2answers

My Essick humidifier makes periodic loud noises. How do I stop it?
no info generic answer ---check fan and compressor
Read full answer
Dec 09, 2021 • Essick Air Humidifiers
0helpful
1answer

I have a 1099 general powered humidifier making a loud humming noise.
there are no moving parts in that humidifier other than the solenoid and it only moves open or closed are you sure the noise isn't caused by something else, maybe something close or even the furnace
Read full answer
Feb 23, 2014 • General Filters 1099-LH Humidifier
1helpful
1answer

Have a aprilair 550 for some time. Installed a new Lennox G61MP furnace and the technitions failed to reconnect the wiring that powers the humidifier. Need wiring schematic. Does humidifier transformer get...
Hello, yes the transformer will get a 120 volts from the Furnaces control board, there should be a terminal labeled HUM on the control board. You need to bring 2 wires one from HUM and one from a nuetral tap on the board to the line side of the transformer, this way every time the blower motor on the Furnace turns on the humidifier will aswell.
Read full answer
Aug 23, 2011 • Aprilaire 550 Humidifier
1helpful
1answer

Loud Ringing or buzzing noise off and on from the humidifer. Do we just need a new filter?
Hello, usually a ringing or buzzing sound comes from the solenoid valve on the humidifier. Make sure that the solenoid valve is getting a solid stream of water to it, sometimes if there is not a good stream of water the solenoid will buzz. if that checks out good than replace the solenoid vlave.
Read full answer
Feb 10, 2011 • Aprilaire 550 Humidifier
0helpful
1answer

Have an HE225A, B By-pass Flow thru humidifier about 9 yrs old. Just change the antimicrobial pad with recommended Aprilair 110/220 and when the furnace comes on, there is a loud, hum-like, vibrating noise...
Make sure the new pad you installed is in the right position. The pad is marked with a black dot about the size of a quarter. This end should be up for proper water flow through the pad.I fwater flow is being restricted at the pad the vibrating nosie that you are hearing is the dry portion of the pad vibrating agaist the platic housing of the humidifier. This noise stops once the pad has absorb enough water in this area of the pad.
Read full answer
Jan 23, 2011 • Honeywell HE220A1019 Whole House...
0helpful
1answer

My Aprilaire 560 doesn't shut off even if the blower is off.
My Aprilair 560 turns on and off repeatedly.Making a loud banging sound.Changed my water valve worked 1 day and started agin.
Read full answer
Dec 20, 2009 • Aprilaire 550 Humidifier
17helpful
1answer

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.
Read full answer
Dec 13, 2009 • Aprilaire 700 Humidifier
1helpful
1answer

Aprilair 760 Humidfier will not stop water flow to EV panel
If the water continues runs nonstop even when the heater is turned off, you might have either a bad solenoid valve or a bad humidistat. Simply disconnect one of the two low voltage wires going into the unit. If the water turns off then your problem is most likely your humidistat or the low voltage wiring. If the water continues to run even when the low voltage is disconnected you have a defective solenoid valve.
Good luck.......
Read full answer
Apr 09, 2009 • Aprilaire 700 Humidifier
0helpful
1answer

Aprilair model 760 does not go on
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
Read full answer
Dec 14, 2008 • Aprilaire 550 Humidifier
1helpful
1answer

No water to my Aprilair model 550.
Some sump pump have a safty switch that will not let the hum. come on if the tank is full of water, I,m not sure if this is the type that you have but make sure that the pump is pumping water. Also your humidistat have an internal switch that it should be set to bypass not to power Note: some humidifier have their own power supply the 550 dose not
Read full answer
Jan 26, 2008 • Aprilaire 550 Humidifier
Not finding what you are looking for?

View Most Popular

700 Humidifier

  • Humidifiers

Related Question

My Essick humidifier makes periodic loud noises. How do I stop it?

  • Essick Air Humidifiers

Related Topics

1,620 views

Ask a Question

Usually answered in minutes!

Popular Questions

Aprilaire 600 - change water panel light stays on

Aprilaire 600 Humidifier

What should my humidifier be set at for the winter?

Aprilaire 700 Humidifier

Aprilaire 600 only operates in test mode...

Aprilaire 600 Humidifier

Loud "Glonk" when humidifier turns off

Aprilaire 700 Humidifier

My aprilaire model 560 is constantly clicking loudly. I read about the click point but despite where I set the dial it is constantly clicking whenever the furnace kicks on. What can I do?

Aprilaire 600 Humidifier

Top Aprilaire Humidifiers Experts

Paul Carew

Level 3 Expert

3808 Answers

Cindy Wells

Level 3 Expert

6688 Answers

john h

Level 3 Expert

29494 Answers

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

Answer questions

Manuals & User Guides

PDF Manual
. 700 Humidifier Manual

700 Humidifier

Loading...