Three red flashes on the handle LED and no suction; unit stops within 1–2 seconds of starting.

Safety first: Remove the battery before dismantling the bin or cyclone. Do not run the motor with covers removed.

Steps to try:

• Empty and clean bin: Remove the dust bin and empty it fully. Tap the cyclone gently over a bin to dislodge fine dust. Do not wash the cyclone unless Gtech documentation explicitly allows it.
• Check filters: Remove the pre‑motor filter and post‑motor filter (if fitted). Tap them gently to remove dust. If washable, rinse under cold water only and allow to dry for at least 24 hours before refitting.
• Inspect airway: Check the extension tube, elbow joints, and floor head neck for blockages. Use a broom handle or similar to push out compacted debris.
• Test motor without accessories: With a clean bin and filters, run the vacuum with only the main body and battery. If it still cuts out with three red flashes, the motor or controller PCB may be failing.
• When to seek service: Motor or controller replacement in Gtech cordless vacuums is complex and usually requires a replacement main body assembly. Contact Gtech support or a professional repairer.