TS267 - Detergent dispenses even when I don't press the red button

TS267 - Detergent dispenses even when I don't press the red button

The needle valve is stuck in the open position.

Over time, the detergent you use to make the detergent/water solution you mix for the detergent tank may separate from the water. This congealed detergent may accumulate in the tank, hose, wand and in the needle valve. Sediment and particles that come through the water lines may lodge in the needle valve.

Back flush to wash congealed detergent, sediment and particles out of the needle valve and into the detergent tank where it can be removed.