Unit Alarms; Air Flow Alarm; Dirty Filters Alarm - Daikin UATYA-B Operation Manual

4.2 Unit alarms

4.2.1 Air flow alarm
The air flow test is performed using either a mechanical differential or a differential pressure transducer.
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
PAL115 5.0
PAL116 15
PAL118 5
Air flow alarm from differential pressure transducer
Alarm code
Reason for activation
Reset mode
Alarm icon
AlarmLog
Alarm relay
Devices
All devices
4.2.2 Dirty filters alarm
Alarm code
Reason for activation
Reset
Reset mode
Alarm icon
AlarmLog
Alarm relay
Devices
All devices
Daikin R32 Rooftops UATYA-B
ESIE21-02 – 2021.03
UM Description
Pa Constant flow rate - Differential flow switch - Alarm threshold
s Constant flow rate - Differential flow switch - Alarm delay upon fan start-up
s Constant flow rate - Differential flow switch - Alarm delay at steady state
AL5
When the pressure value measured by the differential pressure transducer is lower than
the setpoint in parameter "PAL115" after delay "PAL116" upon unit start-up or "PAL118" at
steady state
Manual
Flashing
Yes
Based on "alarm.conf" file
Behaviour in the event of an alarm
The controller stops the operation of the unit.
AL14
With the unit running, upon opening of the digital input to which the relevant safety device is
connected
When the relevant digital input closes
Automatic
Flashing
Yes
Based on "alarm.conf" file
Behaviour in the event of an alarm
They follow their control
4 Alarms
Service manual
91