12
GB
LEDS’ TABLE
LEGEND
= LED ON
= LED OFF
= flashing LED (0,1 second ON, 0,1 second OFF)
= flashing LED (2 seconds ON, 2 seconds OFF)
= flashing LED (7 seconds ON, 7 seconds OFF)
NORMAL OPERATION
DIAGNOSTICS
NOTES
• “Damaged sensor” means a situation in which the sensor is disconnected or short-circuited.
• The condensate level alarm is active only in cooling (COOL) and dehumidifying (DRY) mode.
• “Wrong operating mode” indicates that it is selected by remote control an operating mode not permitted by the system
conguration set during installation (for example, you select the heating mode, but the unit is set to “cooling only”).
• “Set temperature can not be reached” indicates that:
• the unit is in cooling mode, but the water temperature is above the set temperature for more than 10 minutes, so the
desired temperature can not be reached
or:
• the unit is in heating mode, but the water temperature is lower than the set temperature for more than 10 minutes,
so the desired temperature can not be reached.
• “Communication Error” indicates that the unit is set as SLAVE on SACBUS protocol, but which has lost communication
with the MASTER board for more than 30 seconds.
LD1
STANDBY
Red
LD2
STANDBY
Green
LD3
TIMER
Blue
LIGHTS UP CONDITIONS
● ● ○
Unit in heating mode waiting to warm (ICT < 32°C)
Unit in heating mode and thermo-off
○ ● ○
Unit in heating mode with heat exchanger already hot (ICT > 32°C)
Unit in cooling mode
○ ● ●
Unit in heating mode with heat exchanger already hot and active timer
Unit in cooling mode and active timer
● ● ●
Unit in heating mode, in thermo-off anche active timer
● ○ ○
Unit off
OTHER COMBINATIONS See DIAGNOSTICS
Error
LED’s status
Effects
LD1 (Stby) LD2 (Opr) LD3 (Timer)
Damaged air sensor
○ ○
The system stops
Damaged coil sensor
○
Set temperature can not be reached
Wrong operating mode
Communication error (only for SLAVE on SACBUS)
Condensate level alarm
○
○
The system stops and the condensate
pump is activated
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