4 Operation
Display messages
Actuating the reset button is prohibited in the
event of an insulation fault.
– Notify the authorised service centre.
NOTE
For further instruction relating to explosion-
protection warning lights, see the chapter
entitled "Operating and display elements",
section "Explosion-protection warning lights".
Messages
Certain truck conditions may cause event-
related messages to be shown on the display
of the display-operating unit.
There are messages about operation and
messages about the truck. If a message about
operation appears, the display-operating
unit will prompt you to perform an action. A
message about the truck means that the truck
control unit has detected a fault.
The following types of message may appear
individually or in combination:
• A graphic symbol
• The message
• A code consisting of a letter and a four-digit
number
The message is displayed until either the
cause has been corrected or the message has
been acknowledged.
In the case of successive events, the respec-
tive messages are displayed one after another
on the display.
Messages about operation
If messages about operation appear on the
display-operating unit, an action must be
carried out.
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