___________________________________________________________________________ NT 1965 A - 03/201915
6.1.5
OFF VIA ALARM
When the machine is energised, it can be in the state
OFF by alarm
. This method switches the unit and its devices off
and closes the dampers until the alarm is deactivated. In this state, if no command is issued by the supervisor or if the
machine is not switched off via the ESC button, the control unit will switch to OFF automatically. This state is brought
about by the following alarms:
•
Supply air fan thermal alarms (AL01)
•
Return air fan thermal alarms (AL02)
•
Differential pressure switch alarm (AL03)
•
Fresh air damper end position alarm (AL06)
•
Fire alarm (AL16)
•
Supply temperature less than PA36 for more than 10 minutes (AL17)
•
Supply temperature greater than PA37 for more than 10 minutes (AL18)
•
Frost protection temperature sensor alarm (ES01)
When the alarm conditions are eliminated, the machine returns to normal operation
6.1.6
RTC CONFIGURATION
When the board is powered off for several days, it will be necessary to reconfigure the RTC system clock (Real Time
Clock). In this case, when the machine is powered up, the RTC configuration page will be displayed:
Once the clock is configured, press
Enter
to update the RTC and access the main page of the application. Pressing
ENTER
to confirm also resets any clock alarm (
ERTC
).
If the alarm does not disappear: disconnect and reconnect the power supply to the board and then reset the alarm
manually.
6.2
STATUS PAGES
From the main page, you can scroll through the machine status pages. These pages are not password-protected and
can only be accessed when the machine is switched on. To display them, press the "Right or Left" buttons on the
remote control.
If some devices/accessories are deactivated by the corresponding parameter, the information on the relevant
operating states will be substituted with suspension points "...". The same applies to deactivated sensors.
Fan
Exchanger protection
Freecooling/freeheating
Recycling casing fan