Aprilaire Humidifiers Troubleshooting: All you need to know

Aprilaire Humidifiers Troubleshooting

Like any complex machinery, Aprilaire humidifiers can sometimes encounter problems. Here are the common Aprilaire humidifier troubleshooting problems and how to fix them.

Aprilaire humidifiers troubleshooting: Main Problems and Solutions

There can be a few issues when your Aprilaire humidifier is not working correctly. Here are the main ones.

The Humidifier Is Not Getting Water

There may be issues with the water supply to your humidifier, such as a faulty valve or a clogged filter. Another likely reason could be a buildup in the humidifier itself. Here are some solutions.

Water Inlet Valve

Check the water inlet valve, which is responsible for supplying water to the humidifier. If it isn’t working correctly, the humidifier won’t be able to function. Follow these steps:

  • Turn the valve on.
  • Check the water line for any kinks or blockages. Remove any blockage so water can flow through.
  • Inspect the valve for any damage or debris.
Aprilaire Humidifiers Troubleshooting
Aprilaire Humidifiers Troubleshooting: All you need to know

Saddle Valve

A saddle valve is a small valve used to tap into a water line. It is typically located near the humidifier and mounted on the wall or floor. If the saddle valve is clogged, replace it. Another possibility is that the valve is not working correctly. 


The humidistat is the humidifier’s component that controls the room’s humidity level. If it is set too low, the humidifier will not turn on. Conversely, if it is set too high, the humidifier will run continuously and may over-humidify the room.

The ideal setting for the humidistat depends on the room’s size and the desired humidity level. However, a good starting point is to set it to between 30 and 50 percent. With the humidistat set correctly, the humidifier should turn on and off to maintain the desired humidity level.

The Drum Won’t Turn

The humidifier drum is a crucial component of your humidifier, responsible for delivering moisture to the air in your home. If your humidifier drum won’t turn, there is likely some obstruction inside the drum preventing it from rotating.

Accumulated Debris

If dirt or other debris accumulates on the surface of the drum, it can prevent it from turning smoothly. You may need to disassemble the drum and carefully clean it using a damp cloth or specialized cleaning solution to remove any obstructions.

Motor Issue

Suppose there is an issue with the motor that powers the drum. In that case, you will likely need to take your humidifier to a qualified repair professional who can assess and troubleshoot your particular model.

The Float

The most common reason a humidifier drum doesn’t turn is that the float is stuck. The float is a small plastic piece in the water tank that tells the humidifier when to turn it on and off. If the float gets stuck, it can prevent the humidifier from turning on. 

To fix this, remove the float from the water tank and clean it with a soft cloth. If the float is damaged, you may need to replace it.

Drive Belt

The belt is responsible for driving the drum. If the drum isn’t turning, the belt may have come off. You will need to put it back on if it has come off. 

To do this, find the end of the belt still attached to the motor. Then, carefully thread it over the drum and around the pulley. Once you have done this, you should check to ensure that the belt is tight. If it is too loose, it will slip off again.

Aprilaire Humidifiers Troubleshooting
Aprilaire Humidifiers Troubleshooting

The Fan Is Not Working

If the fan in your humidifier is not working, the unit will not be able to circulate moisture effectively.

Blow Out the Motor

First, make sure that the unit is unplugged. Then, use compressed air to blow out dust or debris clogging the motor. Finally, hold the can upright and aim the nozzle directly into the engine. 

You may need to do this a few times to remove all the debris. Then, plug the unit back in and see if it’s running smoothly. If not, you may need to replace the motor. However, blowing it out can often fix the problem without buying a new one.


Turn the humidistat to its highest setting and listen for a click, indicating that the switch is on. Then, the fan should start working. If you don’t hear a click, the switch may be damaged.

The Fuse

Check the fuse. If it is damaged or old, you’ll need to replace it with a new one.

The Humidifier Is Not Draining

If your humidifier isn’t draining, you risk damaging the unit or causing other problems. There are a few common reasons for humidifiers not draining correctly. 

Unclog the Drainage Tube

A clogged drainage tube in a humidifier can be relatively easy to fix if you have the right tools. 

First, you’ll need to turn off your humidifier and unplug it from the power source. Then, locate the drainage tube and use a brush or other object to clear away any blockages. Once the line is clear, you can plug your humidifier back in and turn it on. In just a few minutes, your humidifier will be up and running again!

Drain Hose

Check the drain hose for any kinks. If the hose is kinked, it may prevent the water from draining out of the humidifier. 

Drain Pan

If you notice that your humidifier isn’t draining correctly, clear the drain outlet. You can detach the outlet and run it under hot water. If that doesn’t work, you may need to use a small brush or a paperclip to clear any debris blocking the drain. 

Another option is to add vinegar to the water tank. The acidic properties of vinegar can help break down any deposits causing a blockage. Just be sure to rinse out the tank thoroughly before using it again.

Water Panel Distribution Tray

A water panel distribution tray inside the humidifier holds a small amount of water. As air draws through the humidifier, it passes over the water panel, causing the water to evaporate into the air. This process adds moisture to the atmosphere, making breathing more comfortable.

If a humidifier is not working correctly, one possible solution is to check the water panel distribution tray. 

This tray can become clogged with mineral deposits, dirt, or other debris. If the tray is blocked, it will prevent water from evaporating properly, and the humidifier will not work correctly. Additionally, the tray can become cracked or out of place, preventing proper operation.

Water Line

A humidifier is a great way to improve the air quality in your home, but only if it’s functioning correctly. One common problem with humidifiers is that they stop draining properly, leading to a buildup of water and bacteria, which can be a health hazard and damage your humidifier. One possible solution is to check the water line for leaks. 

If there are any cracks or holes, water will be able to escape, leading to a buildup in the tank. Another solution is to empty the tank regularly and clean it with a mild disinfectant.

Aprilaire Humidifiers Troubleshooting

Humidifier Overflowing

One of the most common problems with humidifiers is that they can start to overflow, leaving water puddles on the floor and damaging nearby surfaces.

Unclog or Unkink the Drain Hose

If your humidifier is starting to overflow, one of the first things you should check is the drain hose. If the hose is clogged or kinked, it will prevent water from draining properly, causing the humidifier to overflow. 

Luckily, this is a relatively easy problem to fix. First, remove the hose and clear any debris blocking it. Once the hose is clear, reattach it and make sure there are no kinks or bends.


Aprilaire humidifiers are a great way to improve the air quality in your home and protect your family from the dangers of dry air. 

However, like all other machines, they occasionally need Aprilaire humidifier troubleshooting. Following the tips in this article, you should be able to fix most Aprilaire humidifier issues. But if you’re still having trouble, don’t hesitate to contact our professional help for further help.


If you’re still not sure what to do with your humidifier, these might help. We’ve included information on the Aprilaire 600 troubleshooting, including the Aprilaire humidifier not turning on, the humidifier not working after cleaning, the humidifier stopped working, how to activate Aprilaire humidifiers, and how to reset Aprilaire humidifiers.

Why is my Aprilaire humidifier not working?

If my humidifier is on but not working, it may be clogged or dirty. As minerals and debris build up inside the unit, they prevent proper airflow and reduce effectiveness.

How do I reset my Aprilaire humidifier?

To reset your Aprilaire humidifier, you must first turn off the power to your device. Next, locate the built-in water panel (sometimes called a “pad”) inside your humidifier and remove it from the device. After this:

– Use clean water to rinse and soak the pad for about 15 minutes before putting it back in your humidifier.
– Replace the pad, restore power and wait about 30 minutes for your humidifier to fully reset and function correctly.
– If you are still experiencing issues with your Aprilaire humidifier after resetting it, consult the user manual or contact a professional for further assistance.

How can you tell if your Aprilaire humidifier is working?

One potential indicator that your Aprilaire humidifier is working correctly is if you notice an increase in the humidity levels inside your home. You may also see that your skin and respiratory system feel less dry and irritated or that your home feels more comfortable overall. 

Additionally, suppose you regularly check the water level in your humidifier tank and notice that it is consistently at or near full capacity. In that case, this may indicate that the humidifier is functioning correctly.

Why is my whole house humidifier not working?

There could be several reasons your whole house humidifier is not working correctly. One possible cause is the unit’s clogged or dirty air filter. If this is the case, you will need to replace or clean the air filter to restore proper functionality to your humidifier. 

Another potential issue may be an issue with the water supply to the humidifier, such as a leaky connection or a clogged water line.

What to do if the humidifier is not working?

The first thing to do if you notice your humidifier isn’t working correctly is to check if the humidifier has power and if the water tank is full. You may also want to check the filter for any obstructions or clogs. Then, clean any dirt or particles out of the internal components of the humidifier.

More content related

Dehumidifier compressor starts then stops? Find solutions here

AirCare Humidifier Blinking 20? Find Solutions Here

Furnace Leaking Water? Here Is the Solution

This Is Why Ants Do Come into the House in Summer