Diffuser Troubleshooting & Care

Having trouble with your AirScent diffuser? Most common issues can be resolved in just a few minutes. Use the troubleshooting guide below to find your issue, or follow our care, cleaning and connection instructions to keep your diffuser performing at its best.

What's it doing?

8 common symptoms

No mist at allRunning, but nothing coming outNo scentSound is running, no fragranceWon't turn onHas power, stays offContinuous beepingWon't stop beepingWeaker fragranceUsed to be strongerNot in the appOn, but won't show upBubbling noiseGurgling from the bottleIgnoring the scheduleWorks manually, not on schedule

Three habits that prevent most problems

Before troubleshooting anything, check these — they're behind the majority of issues we hear about.

Always keep it upright

Never tilt, lay it on its side, or transport it horizontally — especially with fragrance oil inside. Tilting lets oil leak into the electronics.

Damage from tilting or side-storage can void your warranty.

Give it room to breathe

Position it in an open, ventilated spot with some natural air movement. Avoid tucking it behind furniture, under cabinets, or into enclosed spaces.

Residue nearby usually means low airflow — move it and lower the intensity.

Check the rubber seal

Every time you remove or swap the fragrance bottle, confirm the rubber seal is present, correctly seated, and undamaged before reconnecting.

Don't operate the diffuser if the seal is missing or damaged.

Cleaning & changing fragrances

Weaker scent, mixed fragrances, or reduced mist usually mean it's time for a clean.

Changing fragrances

Switching scents? Rinse the brown bottle only, let it dry, then refill.

Brown bottle only · ~5 minutes

  1. Remove the brown fragrance bottle.
  2. Empty any remaining fragrance oil.
  3. Rinse the brown bottle only, using hot (not boiling) water.
  4. Let the bottle dry completely.
  5. Refill with your new AirScent fragrance.

Never rinse the diffuser head, tubing, or electrical components with water.

Deep clean with methylated spirits

For weak scent, poor output, or before a fragrance switch — about 15 minutes.

Flushes tubing and clears residue

  1. Remove the fragrance oil bottle.
  2. Empty any remaining fragrance oil.
  3. Add a small amount of methylated spirits to the bottle.
  4. Reconnect the bottle to the diffuser head.
  5. Run the diffuser on high for 10–15 minutes.
  6. Turn it off and remove the bottle.
  7. Empty any remaining methylated spirits.
  8. Let the bottle dry fully before adding fragrance oil.

Connecting to the Scent Online app

Bluetooth recommended

Bluetooth gives the most stable connection. Wi-Fi isn't needed for normal operation once your schedule is saved.

Connect via Bluetooth

Scent Online app

  1. Download and open the Scent Online app.
  2. Turn Bluetooth on in your phone settings.
  3. Switch your AirScent diffuser on and stay close to it.
  4. In the app, select Bluetooth Free Login and allow Bluetooth access.
  5. Wait for the app to find nearby devices, then select your diffuser.
  6. Select Schedule, choose your times and fragrance intensity.
  7. Select Save in the top-right corner.

Reset your diffuser

Fixes most “not appearing in app” issues

Switched on but not showing up in the Scent Online app? A reset almost always solves it. Pick your model.

Reset — Tower X

Then reconnect via Bluetooth

  1. Make sure your Tower X is switched on.
  2. Locate the small reset pinhole on the front, just above the AirScent logo.
  3. Insert a small pin into the reset hole.
  4. Press and hold for approximately 10–15 seconds.
  5. Continue holding until you hear two beeps.
  6. Release the button.
  7. Open the Scent Online app and reconnect using Bluetooth.

Reset — S1500L / S3000XL

Then reconnect via Bluetooth

  1. Make sure the diffuser is switched on.
  2. Press and hold the + and – buttons together for approximately 10–15 seconds.
  3. Continue holding until you hear two beeps.
  4. Release the buttons.
  5. Open the Scent Online app.
  6. Search for the diffuser again using Bluetooth.

Reset — S3000TF Big Tower

Then reconnect via Bluetooth

  1. Make sure the diffuser is switched on.
  2. Press and hold the top-left button.
  3. Continue holding until you hear two beeps.
  4. Release the button.
  5. Open the Scent Online app and reconnect using Bluetooth.

Reset — X-Mini

Then reconnect via Bluetooth

  1. Remove or open the front cover of your X-Mini.
  2. Locate the reset button inside, on the right-hand side.
  3. Press and hold for approximately 10 seconds.
  4. Continue holding until you hear the reset beep.
  5. Release the button and reconnect power if required.
  6. Open the Scent Online app and search for your X-Mini using Bluetooth.

Frequently Asked Questions

Didn't see your symptom above? This covers everything, grouped by what's happening.

Power & startup

My diffuser has power but isn't turning on.

Check that the power cable and adapter are securely connected. Try another compatible power outlet to rule out an issue with the outlet itself.

My diffuser is continuously beeping.

Check the power cable and adapter first. Then inspect the diffuser for any sign that fragrance oil may have entered the internal components. If you suspect oil has entered the machine, turn it off and contact AirScent Support before using it again.

My diffuser keeps turning itself off.

Open the Scent Online app and check the operating schedule. Confirm the correct start and finish times are selected, and that you pressed Save after making changes.

Mist & scent

My diffuser is running but producing little or no mist.

With the diffuser operating, check whether you can feel air pressure at the outlet. If it's running but producing little or no mist, it likely needs cleaning — see the cleaning guide above.

I can hear it operating, but there's no scent.

This usually means residue or a blockage in the fragrance tube or atomiser. Run the methylated spirits cleaning process described above.

My fragrance suddenly seems weaker.

Check the amount of fragrance left in the bottle, your intensity setting, and the operating schedule. Also confirm the diffuser needs cleaning and is positioned somewhere with good airflow.

My new fragrance smells mixed with the previous one.

A small amount of the old fragrance can remain in the tube or atomiser. Clean the diffuser before switching to a different fragrance.

The fragrance isn't reaching the whole room.

Position matters a lot here. Make sure the diffuser sits in an open area, away from furniture, cabinets, or walls that restrict airflow. Try repositioning before increasing intensity.

There's fragrance residue around my diffuser or nearby surfaces.

Intensity is likely too high for the room, or airflow is too low. Move the diffuser to a more open spot and reduce the fragrance intensity.

It's making a bubbling, gurgling, or unusual noise.

The fragrance bottle may be overfilled. Remove some oil to leave room for pressure to release, then test again.

It's making more noise than usual.

Confirm the diffuser is sitting upright, on a flat stable surface, and that the fragrance bottle and diffuser head are securely fitted. If the noise sounds like bubbling, also check for overfilling.

After maintenance

It stopped working after I changed the fragrance bottle.

Double-check the fragrance bottle, fragrance tube, diffuser head, and rubber seal are all correctly reinstalled — the rubber seal between bottle and head especially.

The app is showing the wrong fragrance oil level.

The oil-level indicator is an estimate, not a physical sensor. After refilling, reset or update the fragrance level in the app where that option is available.

App & schedule

It works manually but doesn't follow its schedule.

In the Scent Online app, check that the correct days are selected, start and finish times are correct and in 24-hour format, and that the schedule was saved using Save in the top-right corner.

It's switched on but not appearing in the app.

This is almost always fixed by a reset. Jump to the reset instructions for your model above, then reconnect via Bluetooth.

I unplugged or moved it and now it's behaving differently.

Check the power connection first, then reconnect via the Scent Online app and confirm your saved schedule and intensity settings are still correct.

Still stuck?

If you've been through the steps above and it's still not right, our team can take it from here. Have this ready and we'll sort it faster:

  • Your diffuser model
  • Your order number, if you have it
  • A short description of the issue
  • A photo or video, if relevant
  • What you've already tried
Contact AirScent Support