Pressing on each component will access the corresponding reading parameters.
A ring positioned beside each component indicates its status:
-
Grey: inactive
-
Green: in operation
-
Orange: maintenance fault
-
Red: danger fault
Machine status
The machine status is displayed by clicking
■
Unit status
On
Indicates the unit state
State of the unit
Description
Off
The unit is off
Off due to a fault
The unit is stopped following a fault
On
The unit is operational
On setpoint 1
The unit is operational with the setpoints 1
On setpoint 2
The unit is operational with the setpoints 2
Night cooling
Night cooling mode is active
Frost protection
The unit is stopped but is providing frost protection
Test mode
Test mode is active
Fire protection
Fire protection is active
■
Control active
Indicates the operating status
Operating status
Description
Damper opening
The isolation damper is in the process of opening
Ventilation start-up
The ventilation is in the process of starting up
Control active
The control functions are active
Control limited
Certain control functions are not authorised (E.g.: flow rate insufficient for the electric heater
operation)
Fan delay
The AHU is in the process of shutting down but the ventilation remains active to cool the
electric heaters
Free cooling
Free cooling is in progress
Outdoor temperature limit
The outdoor temperature is too low for the unit to operate
Heat recovery unit defrost preheat
The heat recovery unit is defrosting.
■
Current mode:
symbol grey if operation requested but inactive, symbol coloured if operation
requested and active
Indicates the "Cooling" operating mode
Indicates the "Heating" operating mode
Indicates the "Air quality" operating mode
2 - THE CONTROL PLC
11
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