CoolAir RTX1000, RTX2000 Display messages
21
8 Display messages
I
8.1 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.
NOTE
When you start the vehicle or switch on several consumers at
once, the display text “LO” may briefly appear.
Display
indication
Description Cause Remedy
LO
The battery monitor
has detected low
voltage.
Connection voltage is too
low. The battery capacity
is not sufficient to operate
the system.
➤ Charge your vehicle
battery.
➤ If the fault occurs again,
contact an authorised
workshop.
LO °C
The system has
detected that the
ambient temperature
is too low for opera-
tion.
The ambient tempera-
ture is below 5 °C.
➤ Wait until the ambient
temperature has risen
above 5 °C before
switching on the
system.
HI
The system has
detected a brief or
constant 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
connection voltage.
➤ Brief over-voltage: No
action required.
➤ If the display message
“HI” remains visible for a
longer period: Have the
vehicle electronics
checked. Make sure the
connection voltage is
less than 30 V.
The system has
detected a too big
inclination.
The compressor is
switched off.
10 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
system can be switched
on again.
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