Detergent consumption is unusually high; tank empties much faster than expected.

Safety: Unplug and remove detergent reservoir.

• Check settings: Ensure the detergent concentration or intensity setting is not set to maximum unnecessarily.
• Inspect for leaks: Look for detergent residue around hoses and fittings; repair or replace leaking parts.
• Valve test: With the unit off, observe if detergent continues to drip from the nozzle. If so, the dosing valve is likely stuck open and should be replaced.
• Usage technique: Use shorter trigger pulls and more suction-only passes to reduce detergent use.