Cordless vacuum runs only on low power; higher power modes cannot be selected or drop back immediately.

Safety first: Ensure the battery is fully charged before testing power modes.

• Test after full charge: Charge the vacuum completely, then attempt to switch to higher power modes.
• Check mode button: Press the mode button repeatedly and observe if the indicator changes. If the button feels stuck or unresponsive, it may be faulty.
• Monitor temperature: If the vacuum has been used heavily, allow it to cool for 30 minutes and try again. Thermal limiting can restrict power.
• Assess battery health: If the vacuum immediately drops from turbo to normal and the battery is old, the pack may not support the required current. Replace the battery if runtime is also reduced.
• Service if controls fail: If the mode button does nothing even with a new battery, the control PCB may need replacement.