Daikin UATYQ30ABAY1 [15/24] Inthe offunit column itisreportedifthealarmstopsthewholeunitornot
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Daikin UATYQ30ABAY1 [15/24] Inthe offunit column itisreportedifthealarmstopsthewholeunitornot

Daikin UATYQ30ABAY1 [15/24] Inthe offunit column itisreportedifthealarmstopsthewholeunitornot
Original instructions
Installation manual
15
We reserve the right to make changes without any prior notice.
UATYQ*Y1
Packaged Rooftop
4P522681-1B
the mask displays the working hours of compressors 3 and 4.
2.10 Alarms
When an alarm is triggered, the red "Alarm" key is on and the alarm digital output is activated.
By pressing the "Alarm" key, the last alarm is displayed; the other active alarms can be scrolled with arrow keys.
Thisisanexampleofanalarmmask:
Eachalarmisidentiedbyacode“ALxx”andthealarmcauseisdescribedinthemask.Toresetanactivealarm,
press and hold for at least 2 seconds the "Alarm" key; if the alarm has been successfully reset, the alarm mask
disappears and, if no other alarms are active, the red "Alarm" key is switched OFF. An alarm can be reset only if the
condition that has activated the alarm is not present anymore.
The manual reset of an alarm must be done only after checking the alarm cause and solving the
problem that has activated the alarm.
The improper reset of an alarm can cause serious damages to the unit or to its components.
On alarm history menu, last 150 alarms are stored. When the memory is full and another alarm is activated, the oldest
alarm is overwritten.
In the following, the full alarm list is reported with the main possible causes, some troubleshooting hints, the reset
mode, the action on the unit and on its components.
Thealarmresetmodeisreportedonthe“RESET”column:
• A=automatic:whenthealarmconditiondisappears,thealarmisautomaticallyreset;
• AC=automaticcontrolled:thealarmisautomaticallyresetforalimitednumberofattemptsinacertaintime,after
that the reset becomes manual;
• M=manualresetfromdisplayorfromsupervisor:thealarmmustbemanuallyresetbydisplayasdescribed
above or by the supervisor reset variable; for each alarm with manual reset, the reset day and time are stored on
the alarm history.
Inthe“OFFUNIT”column,itisreportedifthealarmstopsthewholeunitornot:
• Yes=thealarmstopstheunit;
• No=thealarmdoesnotstoptheunit,butonlytheconcerneddevices
CODE DESCRIPTION MAIN CAUSES CHECKS AND TROUBLESHOOTING RESET
UNIT
OFF
ITEMS OFF
AL01
Overload
Compressor 1
Intervention of the thermal
protection compressor 1
Check working conditions.
M No Compressor 1
Check cabling, terminals and circuit
breaker of the motor.
Check adsorbed current.
Check compressor discharge
temperature.
AL02
Overload
Compressor 2
Intervention of the thermal
protection compressor 2
Check working conditions.
M No Compressor 2
Check cabling, terminals and circuit
breaker of the motor.
Check adsorbed current.
Check compressor discharge
temperature.

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