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CoolAir RT780 Display messages
17
8.2 Control panel fault messages
The “Fault” LED (fig. 2 2, page 3) lights up if there is a fault with the parking cooler.
The type of error is shown on the display by the following error codes:
Display
text
Description Cause Remedy
FO1
The compressor does not
work.
Compressor overload or
fault in the electricity supply
to the compressor.
Switch off the system.
Switch it on again after
60 minutes.
If the fault occurs again,
contact an authorised
workshop.
Do not operate the system
at ambient temperatures
of below 0 °C or above
43 °C.
FO2
The system cannot
determine the current
temperature.
Room temperature sensor is
not correctly connected to
the parking cooler or the
measured value is not within
the specifications.
FO3
System overload, the
compressor switches off.
Thermal overload due to a
defective fan or an ambient
temperature that is too
high.
FO4
FO5
Overload due to fan. Short circuit in condenser
fan or evaporator fan.
Leave the system switched off
and consult an authorised
service centre.
FO6
Communication problem
between display unit and
control unit.
Fault in the wiring.
17


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