How do I test my Aprilaire 600 humidifier?

To check the humidifier operation, set the knob to “Test/Reset”, make sure that the water saddle valve is open and that there is electricity to the unit. The furnace blower motor must be operating and the furnace calling for heat for the Aprilaire Humidifier to function.

Why is my Aprilaire humidifier not working?





Common solutions for: Aprilaire Humidifier not getting water



If the water inlet valve is clogged or defective, the humidifer will not fill with water. Use a multimeter to test the valve for continuity. If the water inlet valve does not have continuity, replace it. In addition, test the incoming power to the valve.

How do I know if my Aprilaire humidifier is working?

The click sound at the solenoid valve indicates there is electricity to the solenoid valve. By turning the dial of your manual humidistat 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.

How do you test a humidifier?

There are several ways to determine if a humidifier is working properly. First and foremost, when the humidifier turns on an audible click, followed by the sound of the humidifier fan should be heard. Additionally, water should be seen running through the drain tube at the bottom of the humidifier.

How do I reset my Aprilaire 600 humidifier?

Purchase genuine Aprilaire water panels. If you replace the Water Panel with an automatic control, you should turn the control knob to the “Test/Reset” position until the “Change Water Panel” light blinks to reset the timer.

How do I service my Aprilaire humidifier?





Simply add mild soap and water to the bucket and gently scrub it down. Rinse it thoroughly and let it air dry before putting it back. Clean mineral buildup from the orifice, solenoid, and all other components. Be sure the humidifier is level for proper operation.

How do you test a motor humidifier?

Quote from the video:
Quote from Youtube video: Click if you put a multimeter across the the solenoid. You should read about 24 to 25 volts ac. While the solenoid is open and allowing water to flow into a humidifier if it's a power humidifier.

How do you test a solenoid on a humidifier?

Quote from the video:
Quote from Youtube video: The control lead to running to the valve. And spread the wires apart for testing. Turn your humidistat all the way to the highest setting while the furnace is running. Test with your voltmeter.

Where is AprilAire located?

Madison, Wisconsin



AprilAire is still based in Madison, Wisconsin and remains committed to providing best-in-class Indoor Air Quality solutions through research, engineering, product refinement, and practical experience.

How do you fix a humidifier?

What Are the Steps to Humidifier Repair?

  1. Unplug the humidifier or otherwise make sure that power to the unit is off.
  2. Lift the pad frame from the humidifier housing and hold it so excess moisture will drip back into the reservoir.
  3. Remove the pad from the frame.
  4. Rinse the pad with clean water or replace it.

What do you do when your humidifier doesn’t work?

Humidifier not working



If the humidifier is switched on, but nothing is happening, the first thing you want to do is check for power. Make sure the cord is fully inserted into the outlet. If that’s not the problem, make sure no breakers have been flipped in the fuse or breaker box of your home.

How do I know if my humidifier solenoid is bad?



If you hear a click and water flows through to the humidifier – you need to look elswhere in the control circuit for the issue. If you hear no click and no water flows the valve probably needs to be replaced.

How do you test a aprilaire solenoid?

Quote from the video:
Quote from Youtube video: Caused the humidistat to open the solenoid by increasing the setting above the current humidity. Level. If the solenoid is getting power you should hear a click and there should be about 25 volts AC.

How do you check if a solenoid is working?

Do your best to listen for a “click” noise. If the click is strong and loud, it most likely means the solenoid has enough power and is working properly. If the clicking you are hearing is quiet or repetitive, it may be that your solenoid is not strong enough or does not have enough power from the battery.

Do humidifier solenoids go bad?

The solenoid valve then opens up, allowing more water to flow into the humidifier. If the solenoid valve goes bad, however, the humidifier won’t be able to receive additional water.

What are common problems with humidifiers?



Dirty humidifiers can especially cause problems for people with asthma and allergies. But even in healthy people, dirty humidifiers have the potential to trigger flu-like symptoms or even lung infections when the contaminated mist or steam is released into the air.

What are common problems with humidifiers HVAC?

Assorted Humidifier Parts

  • Clogged water valve.
  • Clogged orifice.
  • Bad solenoid valve.
  • Bad motor.
  • Bad humidistat.
  • Faulty or shorted wiring.
  • Float not working properly.


How do you clean a solenoid on a humidifier?

When debris collects in the valve seat of the solenoid valve body, it can simply be cleaned and returned to the humidifier. Corrosion can be removed by soaking in vinegar and water.

How do you change a aprilaire solenoid?



Quote from the video:
Quote from Youtube video: Let any remaining water drain into the plastic container remove the thumb screws and discard the old solenoid. Align the new solenoid and tighten the thumbscrews. Now connect the water supply.