Help - Gtech vacuum cleaner pulsing on and off

Pulsing on a cordless vacuum usually points to either an airflow restriction or the battery/control system cutting in and out under load. The exact cause isn’t certain from the symptom alone, but these checks should help narrow it down.

1. Check for a blockage Remove the bin, filters, wand and floorhead if possible, and inspect every airway. Look especially in the elbow bends, floorhead neck and any narrow hose sections. Even a partial blockage can make some vacuums surge or pulse.

2. Clean the brush bar and floorhead If the brush roller is tangled with hair or thread, the motor can be overloaded. Make sure the brush turns freely by hand once cleared.

3. Wash and fully dry the filters A clogged filter is a very common cause. If the Pro 2 has washable filters, clean them as per the manual and let them dry naturally for at least 24 hours before refitting. Never refit damp filters.

4. Check the bin and seals Make sure the dust container is emptied properly and fitted back correctly. Inspect seals and gaskets for damage or poor seating, as airflow issues can upset operation.

5. Consider the battery If it pulses even with clean airflow and especially if it’s worse on higher power, a weak battery is possible. If runtime has also dropped recently, that strengthens the suspicion.

6. Listen for motor strain If it still pulses with the wand/floorhead removed, the fault may be in the motor, battery pack, or control electronics rather than a simple blockage.

Isolate it from any charger/mains supply before inspecting internal parts. If it needs electrical testing, battery replacement diagnosis, or strip-down beyond normal cleaning, best use a qualified repairer.

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