SP-900
Display messages
CoolAir
29
9
Display messages
The “Malfunction” LED (
2
3, page 3) lights up if there is a fault in the air con-
ditioner. The type of fault appears in the display.
Display
text
Description
Cause
Remedy
FO2
The system cannot
determine the current
temperature.
Room temperature sensor not
correctly connected to the air
conditioning or the measured
value is not within the specifi-
cations.
➤
Switch off the
system.
➤
Switch it on again
after 60 minutes.
➤
If the fault occurs
again, contact an
authorised work-
shop.
➤
Do not operate
the system when
the ambient tem-
perature is more
than 43 °C.
FO3
System overload,
compressor
switches off.
Thermal overload due to defec-
tive fan or ambient temperature
that is too high.
LO
The battery voltage is
too low.
The battery safety device was
triggered. The voltage has
dropped below the set value.
HI
The battery voltage is
too high.
The battery safety device was
triggered. The voltage has
exceeded 30 V.
Ho
is
flashing
The minimum com-
pressor speed was
not achieved.
If the refrigerant circuit is
overloaded, the compressor
is not able to maintain the
minimum speed.
F05
Communication fault.
Communication between
the display and control unit
is impaired.
BA_SP-900.book Seite 29 Montag, 14. April 2008 9:48 09
