Daikin UATYA-B, Operation Manual

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Service manual Daikin R32 Rooftops UATYA-B
ESIE21-02 – 2021.03
4.2.13 External alarm
A digital input is featured in the controller to manage an external signal. The signal is managed by the controller according
to the option set in parameter “PAL60” (0 = warning only; 1 = unit stop; 2 = only ventilation unit in operation).
The parameters involved are shown in the table.
The values of the parameters are representative. In specific cases, different values can be set.
Parameter Value UM Description
PAL57 0 s Activation delay
PAL58 0 s De-activation delay
PAL59 0 - Max. number of alarms in one hour
PAL60 0 - Action in presence of an alarm
External alarm
Alarm code AL209
Reason for activation When the relevant digital input is open, after the delay setpoint in parameter “PAL57”
Reset Upon closing of the digital input after the delay set in parameter “PAL58”
Reset mode Automatic; switches to manual after the trip occurrences per hour set in “PAL59”
Alarm icon Flashing
AlarmLog Yes
Alarm relay Based on “alarm.conf” file
Devices Behaviour in the event of an alarm
All devices Based on setpoint in parameter “PAL60”
4.2.14 c.pCOe communication error alarm
c.pCOe boards are extensions that are serially connected to the master board.
Alarm code AL52 for extension 1; AL53 for extension 2; AL54 for extension 3
Reason for activation When the master fails to communicate with the corresponding extension.
Reset As soon as serial communication is restored.
Alarm icon Flashing
AlarmLog Yes
Alarm relay Based on “alarm.conf” file
Devices Behaviour in the event of an alarm
All devices Unit operation stop
4 Alarms