User guide

Display and Controls16 EFAS
22
2.1.3 LED Display
The red LED indicates different EFAS states. The table
below explains the meaning of the display.
2.2 Acoustic Signals
The digital tachograph EFAS is provided with a buzzer.
Acoustic signals can be switched on or off as required. For
more information, see the section "Tones" on page 68.
2.2.1 Meaning of the Acoustic Signals
Tone Sequence Meaning
1x long, 2x short
Displayed warning (event or fault
message) to be acknowledged.
2x short, 1x long Failure; system error; EFAS to 
be serviced.
1x long
General error.
1x very long Programmed speed exceeded!
 >>
or
Advance warning of max. speed
be
ing exceeded.
1x short
Indicates a user entry is to be
made.
2x short Incorrect entry warning.
Display Meaning
Red The LED flashes upon activation 
(functional check).
Off EFAS is ready for operation.
Permanently red System error. Have your EFAS
checked by a workshop.
Flashing red Warning. Acknowledge the warning
with OK.
Flashing red 2x Incorrect entry. Correct your entry.