Dometic Waeco AirConServiceCenter ASC2500G Operating Manual page 82

Operation
8.2.2 Entering user codes
When you switch on the air conditioning service station, the device data
appears in the display. If a user code has been created, the same code
must be used to enable the station.
1. Enter the correct user code.
If you enter an incorrect user code, the following error message
appears:
Once the correct code is entered, the station is enabled and it starts
up. The user's name is displayed:
82
ENTER USER CODE
WRONG CODE
John Citizen
ASC2500G
----
EN