Glossary

Plain-English meanings of the words you will meet in manuals and on our E10 pages.

Error code / fault code
A short code (like E10 or 10) an appliance shows when its control board detects a problem. Each brand has its own list.
Inlet valve
An electric valve that lets water into a washing machine or dishwasher. If it fails, the machine cannot fill.
Inlet filter
A small mesh filter where the fill hose connects. It traps grit and is the most common cause of slow filling.
Level sensor (pressure switch)
Tells the control board how much water is in the drum or tub.
Pump filter
A filter behind a small front panel on most washing machines that catches coins, buttons and lint before the drain pump.
Aquastop
A safety inlet hose with a built-in valve that shuts the water off if it detects a leak.
Zeolite / CrystalDry
A mineral used in some Bosch and Siemens dishwashers that absorbs moisture and releases heat to dry dishes.
Super Cool / Fast Cool
A fridge setting that runs the compressor harder for a few hours to bring the temperature down quickly.
Tankless / continuous-flow water heater
A gas water heater that heats water only when you open a hot tap, instead of storing it in a tank.
Direct vent
A sealed venting system that takes combustion air from outside and sends exhaust outside through pipes.
Vent termination
The end of the intake or exhaust pipe on the outside wall or roof.
Combustion abnormality
The burner is not burning cleanly, often from too little air, a blocked vent or a gas supply problem.
E-Nr / model number
The model code on the rating plate. Always quote it with the error code when you call for service.