GMG-LEZ Operation manual
Page 28 of 37
B0840
7.1.2 Changing the password
How to change a password:
1. Switch off voltage supply
2. Press Mode + Save
3. Keep keys depressed and switch voltage on
4. Enter current password (factory default: 1234):
5. Save by pressing "Save"
6. Enter new password
7. Save by pressing "Save"
8. The program will change into normal mode
Should an incorrect entry be made in step 4. the control unit will, after pressing of [SAVE],
switch into the normal mode immediately. To change the password, the user is required to
restart with step 1.
If the newly changed password gets lost, the control unit can be reset to the original
parameters in the factory.
This, however, will result in loosing of all changes made.
For that reason, all changes made to the parameters should always be recorded and
archived.
7.1.3 Error messages
In case of fault, the control will display one of the following errors:
E1 Motor current too high / motor overload
E2 Monitoring time for the pressure switch is over
(left adapter unit)
E3 Reservoir minimum level reached
E4 Monitoring time for the pressure switch is over
(right adapter unit)
After root cause remedy, error messages can be deleted by long pressing of [SAVE].
