dyson tp04 making a weird clicking noise, is it broken?

Diagnosis

The clicking noise in a Dyson Pure Cool TP04 is typically caused by a mechanical interference within the impeller assembly or an imbalance in the motor's rotational axis. Because the TP04 uses a high-velocity brushless DC motor to push air through a narrow slit (the amplifier), even a tiny piece of foreign debris—such as a dried leaf, a piece of plastic packaging, or a clump of pet hair—can strike the impeller blades hundreds of times per second, creating a rhythmic clicking or ticking sound. In some cases, the clicking is not a blockage but a symptom of "bearing chatter." This happens when the motor mounts shift slightly or the lubrication in the motor bearings degrades, causing the impeller to wobble. You can confirm if it is a blockage by running the machine at its lowest speed (1-3) and listening for a slow click, then ramping up to speed 10. If the clicking accelerates linearly with the fan speed, the issue is almost certainly located within the impeller housing or the air intake path.

How to Fix It

To resolve the clicking noise, you must perform a deep clean of the air path and ensure the impeller is unobstructed. Follow these steps precisely:

1. Power Down: Completely unplug the unit from the wall outlet. Do not rely on the remote control to turn it off; the motor must be fully depowered to avoid injury during cleaning.
2. Filter Removal: Twist and remove both the HEPA and Carbon filters from the base. Inspect the interior of the filter shrouds. Use a vacuum with a hose attachment to clear any debris that may have bypassed the filter and entered the motor housing.
3. Aperture Clearing: Locate the narrow air slit (the amplifier) around the loop. Use a canister of compressed air or a soft-bristled detailing brush to clear the entire perimeter. Small objects often get lodged in the corners of the loop, which can cause air turbulence that sounds like clicking.
4. Impeller Inspection: Use a flashlight to look down into the air intake. If you see a visible object caught in the impeller blades, use a pair of long-reach needle-nose pliers or a vacuum with a crevice tool to gently remove it. Do not poke sharp metal objects deep into the motor as you may bend the impeller vanes.
5. Filter Reseating: Reinstall the filters, ensuring they "click" firmly into place. If a filter is slightly askew, it can create a whistle or a rhythmic vibration that mimics a clicking sound.

If That Didn't Work

• Check for Remote Interference: Ensure the remote is not resting against the machine or that there isn't a secondary device triggering the oscillation motor. If the clicking only happens during oscillation, the issue is in the base gear assembly, not the fan. Try cleaning the base track with a damp microfiber cloth to remove grit.
• Replace the HEPA Filter: If your filters are older than 12 months, the structural integrity of the filter pleats may have collapsed. A collapsed filter can lean against the internal housing, causing a vibration or "tapping" sound as air rushes past it at high speeds. Replace with genuine Dyson filters to ensure a tight seal.
• Calibrate the Motor: Perform a hard reset by unplugging the unit for at least 30 minutes. This allows the capacitors to discharge and can sometimes reset the motor's electronic commutation, which may resolve "hunting" noises that sound like clicking.
• Inspect for Plastic Warping: Examine the outer loop for any cracks or stress marks. If the plastic casing has warped due to heat or a drop, it may be rubbing against the internal moving parts during oscillation.

Heads Up

• Avoid Liquid Cleaners: Never spray cleaning agents directly into the air inlets or onto the impeller; this can cause the motor bearings to seize or short-circuit the PCB.
• Filter Warning: Using third-party, non-HEPA filters can lead to debris entering the motor housing, which is the primary cause of the clicking noise you are experiencing.
• Maintenance Cycle: Vacuum the external intake grills every two weeks to prevent dust buildup from being sucked into the impeller assembly.
• Oscillation Care: Avoid manually forcing the loop to turn left or right; always use the remote or app to prevent stripping the gears in the base.