Daikin UATYA-B, Operation Manual

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Service manual Daikin R32 Rooftops UATYA-B
ESIE21-02 – 2021.03
4.6.3 Pressure probes
Condensing pressure
Alarm code AL94 for circuit 1; AL95 for circuit 2
Reason for activation When the value measured by the analogue input is outside the set operating range
Reset When the value measured by the analogue input falls within the set operating range
Reset mode Automatic
Alarm icon Flashing
AlarmLog Yes
Alarm relay Based on “alarm.conf” file
Devices Behaviour in the event of an alarm
Compressors Only the compressors of the circuit involved are switched off
The other devices They follow their control
Evaporating pressure
Alarm code AL98 for circuit 1; AL99 for circuit 2
Reason for activation When the value measured by the analogue input is outside the set operating range
Reset When the value measured by the analogue input falls within the set operating range
Reset mode Automatic
Alarm icon Flashing
AlarmLog Yes
Alarm relay Based on “alarm.conf” file
Devices Behaviour in the event of an alarm
Compressors Only the compressors of the circuit involved are switched off
The other devices They follow their control
Delivery air differential pressure
Alarm code AL106
Reason for activation When the value measured by the analogue input is outside the set operating range
Reset When the value measured by the analogue input falls within the set operating range
Reset mode Automatic
Alarm icon Flashing
AlarmLog Yes
Alarm relay Based on “alarm.conf” file
Devices Behaviour in the event of an alarm
Unit fan
If the unit has been running for the past thirty minutes, the fan keeps the speed value calcu -
lated as the average of the measured values, otherwise the unit stops.
The other devices They follow their own setup parameters if the fan stays operational, otherwise they stop.
Differential air pressure in return line
Alarm code AL72
Reason for activation When the value measured by the analogue input is outside the set operating range
Reset When the value measured by the analogue input falls within the set operating range
Reset mode Automatic
Alarm icon Flashing
AlarmLog Yes
Alarm relay Based on “alarm.conf” file
Devices Behaviour in the event of an alarm
Unit fan
If the unit has been running for the past thirty minutes, the fan keeps the speed value calcu -
lated as the average of the measured values, otherwise the unit stops.
The other devices They follow their own setup parameters if the fan stays operational, otherwise they stop.
4 Alarms