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ENGLISH
UNICO - INVERTER
3
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.
• 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 (g. 28
ref. A).
• If the batteries are at, you will notice that no
messages are displayed and that the unit’s
reception conrmation 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 lter and clean it if necessary.
• Remove anything that might clog the air ows.
The unit does not turn on
The unit does not cool or
heat adequately
• No power supply
The power switch is in “0” position
• Remote control batteries are at
• The temperature set on the remote control is
either too high or too low (when using the hea
ting pump unit).
• The air lter has been blocked before the
respective cleaning LED was switched on.
• Indoor or outdoor air ow 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);
FAULTS POSSIBLE CAUSES SOLUTIONS
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