Cordless vacuum will not charge; charger LED flashes rapidly or shows error color

Safety first: Use only the original Hoover charger. Unplug from mains before connecting or disconnecting the battery.

Steps:

• Allow battery to warm/cool: If the battery is very cold or hot, let it reach room temperature for at least 1 hour, then retry charging.
• Check charger model: Confirm the charger model matches your Hoover vacuum and battery specifications.
• Inspect battery: Look for physical damage or swelling. If present, do not attempt to charge; replace the battery.

If the charger continues to flash error with a physically intact battery at room temperature, the battery BMS has likely locked out; replace the battery pack.