Daikin UATYA-B, Operation Manual

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Service manual Daikin R32 Rooftops UATYA-B
ESIE21-02 – 2021.03
4.3.2 Electronic valve driver alarm
Communication error alarm
Alarm code AL160 for circuit 1; AL161 for circuit 2
Reason for activation Serial communication error between controller and drivers
Reset Automatic
Reset mode 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
Involved circuit Stop
The other devices They follow their control
4.3.3 Humidifier alarms
The controller manages different alarms which are dependant on the connected humidifier.
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
PAL73 1 s CPY humidifier - General alarm - Alarm delay upon activation
PAL74 5 - CPY humidifier - General alarm - Max. number of alarms per hour
PAL75 1 s CPY humidifier - General warning message - Alarm delay upon activation
PAL76 5 - CPY humidifier - General warning message - Max. number of alarms per hour
CPY humidifier – General alarm
Alarm code AL162
Reason for activation General alarm in CPY board after the delay set in parameter “PAL73”
Reset As soon as the alarm in the CPY board is cleared.
Reset mode Automatic; switches to manual after the trip occurrences per hour set in “PAL74”
Alarm icon Flashing
AlarmLog Yes
Alarm relay Based on “alarm.conf” file
Devices Behaviour in the event of an alarm
Humidifier According to parameters set in CPY board
The other devices They follow their control
CPY humidifier – General warning message
Alarm code AL163
Reason for activation General alarm in CPY board after the delay set in parameter “PAL75”
Reset As soon as the alarm in the CPY board is cleared.
Reset mode Automatic; switches to manual after the trip occurrences per hour set in “PAL76”
Alarm icon Flashing
AlarmLog Yes
Alarm relay Based on “alarm.conf” file
Devices Behaviour in the event of an alarm
Humidifier According to parameters set in CPY board
The other devices They follow their control
4 Alarms