Instruction manual

EN
Display messages
34
7Display messages
I
Note
When you start the vehicle or switch on several consumers at once,
the display text LO may briefly appear.
7.1 Control panel warnings
The system control unit has various functions for protecting the device and
the battery. If one of these protective functions has been triggered, this is
shown by the following codes on the display.
Display
text
Description Cause Remedy
LO
The battery monitor has
detected low voltage.
The compressor
switches off immedi-
ately and the fan is
switched off after 20 to
30 seconds. The whole
system shuts down after
2minutes.
Connection voltage is too
low. The battery capacity
is not sufficient to operate
the system.
➤ Brief under-voltage: No
action required.
➤ The system switches it-
self off: Charge the vehi-
cle battery or check if
the battery monitor has
been correctly set.
HI
The system has
detected a brief or con-
stant over-voltage.
A brief over-voltage may
occur when large electri-
cal consumers are
switched off. Constant
over-voltage is the result
of an incorrect connec-
tion voltage.
➤ Brief over-voltage: No
action required.
➤ If the display message
“HI” remains visible for a
longer period: Check the
vehicle electronics.
Make sure the connec-
tion voltage is less than
30 volts.
HO
The system has
detected a brief electri-
cal overload and
switches the compressor
off.
The current power
requirement of the com-
pressor is too high.
➤ The brief overload is
compensated by the
system by switching off
the compressor. The
compressor starts up
again after a short time.
The compressor is
switched off. 5 minutes
later, the entire system
will be switched off.
The compressor (driver's
cab) is tilted too far.
➤ Once the compressor
has been returned to its
normal position, the sys-
tem can be switched on
again.
BA_CA850S_SP950.book Seite 34 Mittwoch, 2. Mai 2012 5:05 17