Lamp house not correctly inserted

Check if the lamp house is properly installed. Ensure that the three fixation screws (reference 1 image "Lamp house switch") of the lamp house are fastened.

Lamp Info Module with old firmware.

Check lamp info module firmware version in the "version info" area of the communicator. If mismatch is detected then run update.

Malfunction Lamp Info Module.

Replace the Lamp Info Module. See "Replacement of the Lamp Info module".