Cordless Shark vacuum displays an error pattern and will not start after long storage; battery appears full but motor does not run

Safety first: Remove the battery before attempting any mechanical checks. Do not apply external power directly to the motor.

• 1. Verify battery function: Test the battery on another compatible Shark vacuum if possible, or confirm it charges and shows normal LED behavior.
• 2. Listen for motor attempt: Install the battery and press the power button while holding the vacuum near your ear. If you hear a brief click or tiny movement then shutdown, the motor may be stuck.
• 3. Gently tap motor housing: With the battery removed, gently tap the motor housing area with your hand to free any stuck brushes. Reinstall the battery and test again. Do not strike hard or use tools.
• 4. Check for burning smell: If you smell burnt insulation or see smoke when attempting to start, stop immediately. The motor windings may be shorted.
• 5. Replace motor or main body: If the motor will not start and the battery is known good, the main suction motor or soft‑start circuit on the PCB is likely defective. These components are not easily user‑serviceable; replace the motor assembly or main body.