The following steps have to be performed by a qualified person as you may be exposed to electrical hazards and/or damage the product. Make sure the power supply is disconnected if required and the water supply is disconnected if required.
For the following steps you will need the following tools: Screw driver.
Dismount the overflow cover and unplug the hose from the overflow.
WARNING: Be sure the adjustment is done before disconnecting the hose. If LSL value is Hi in the Info menu of the touchscreen, the hose can be disconnected safely.