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CONTROL
OPERATION OF THE MAIN MODULE
When starting for the first time, if there is no request for operation from the indoor unit, the main control module displays the text
OFF. When there is a request for operation, the operating mode (cooling) and the text ON are displayed if unit operates as
chiller, the text ON and the operating mode (heating) if unit operates as heat pump.
COMPRESSOR TIMERS
To avoid continuous starts and stops of the unit and thus compromise the functioning of the compressors, timers have been
installed; these can be interpreted using the following figure.
When the compressor is activated, it continues to operate as described previously until reaching the SET POINT
temperature. It will subsequently restart according to the conditions requested by the thermostat, and if the on-off safety time
and the safety time between two successive starts has elapsed. These parameters are set by the manufacturer.
Compressor ON
Compressor OFF
Seconds
Off On
Safety time
On / on safety time
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