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3.5.2
Troubleshooting
In case of malfunctions, check the following table.
If the problem persists after the suggested checks and controls, contact the authorised technical service.
FAULTS
The unit does not turn on
The unit does not cool or
heat adequately
POSSIBLE CAUSES
• No power supply
• The power switch is in "0" position
• Remote control batteries are flat
• The temperature set on the remote control is
either too high or too low (when using the hea-
ting pump unit).
• The air filter has been blocked before the
respective cleaning LED was switched on.
• Indoor or outdoor air flow obstacles are present.
• The heating/cooling load has increased (for
example a door or a window was left open or
equipment that dissipates a large amount of
heat was installed in the same room);
SOLUTIONS
• Check that mains power is present (by turning on a
light for instance).
• Check if the master switch is closed or if a fuse is
burnt (in this case replace the fuse). If there is a
magnetothermal circuit breaker instead of the
master switch, check if it tripped (if it did, rearm it).
Should the problem occur again, contact the Servi
ce Center at once and do not attempt to run the unit.
• Move the power switch to "1" position (fig. 28
ref. A).
• If the batteries are flat, you will notice that no
messages are displayed and that the unit's
reception confirmation sound is missing when you
try to issue any command to it. In this case replace
the batteries.
• Check the temperature setting on the remote
control and correct it if need be.
• Check the air filter and clean it if necessary.
• Remove anything that might clog the air flows.
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