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Original instructions
Installation manual
18
We reserve the right to make changes without any prior notice.
UATYQ*Y1
Packaged Rooftop
4P522681-1B
CODE DESCRIPTION MAIN CAUSES CHECKS AND TROUBLESHOOTING RESET
UNIT
OFF
ITEMS OFF
AL24
B7 probe broken or
disconnected
The reading of the probe B7
(indoor air humidity) exceeds
the range
Check working conditions.
M No
All components and
fuctions directly
related to the probe
Check in the controller for the correct
probe reading range .
Check the correct reading of the probe
and eventually replace it.
Check probe wiring and terminals.
Check correct functioning of the analogic
input of the main board.
AL25
B4 probe broken or
disconnected
The reading of the probe
B4 (supply air temperature)
exceeds the range
Check working conditions.
M No
All components and
fuctions directly
related to the probe
Check in the controller for the correct
probe reading range .
Check the correct reading of the probe
and eventually replace it.
Check probe wiring and terminals.
Check correct functioning of the analogic
input of the main board.
AL26
B3 probe broken or
disconnected
The reading of the probe B3
(condensing pressure circuit
1) exceeds the range
Check working conditions.
M No
All components and
fuctions directly
related to the probe
Check in the controller for the correct
probe reading range .
Check the correct reading of the probe
and eventually replace it.
Check probe wiring and terminals.
Check correct functioning of the analogic
input of the main board.
AL27
B8 probe broken or
disconnected
The reading of the probe B8
(Outdoor air temperature)
exceeds the range
Check working conditions.
M No
All components and
fuctions directly
related to the probe
Check in the controller for the correct
probe reading range .
Check the correct reading of the probe
and eventually replace it.
Check probe wiring and terminals.
Check correct functioning of the analogic
input of the main board.
AL28
B5 probe broken or
disconnected
The reading of the probe
B5 (return air temperature)
exceeds the range
Check working conditions.
M No
All components and
fuctions directly
related to the probe
Check in the controller for the correct
probe reading range .
Check the correct reading of the probe
and eventually replace it.
Check probe wiring and terminals.
Check correct functioning of the analogic
input of the main board.
AL29 Heater 1 overload
The circuti breaker of the
heater group 1 trips
Checkworkingconditions(airowand
temperature).
M No Heater group 1Check cabling and terminals of the
heaters and adsorbed current.
Check thermal switch.
AL30 Heater 2 overload
The circuit breaker of the
heater group 2 trips
Checkworkingconditions(airowand
temperature).
M No Heater group 2Check cabling and terminals of the
heaters and adsorbed current.
Check thermal switch.
AL31
Generic serious
alarm by DIN .
Systemo
The serious alarm digital input
(DIN) is open
Check external control. M Yes All
AL32
Generic alarm by
dig. input System
still on
The generic alarm digital input
is open
Check extarnal control. M No None
Содержание
- Models 1
- Operation manual 1
- Rooftop packaged unit 1
- Rooftop packaged unit english 1
- Contents 3
- Operating guide 5 3
- User interface 4 3
- User interface 4
- Operating guide 5
- Software menu 5
- Main mask and menu 6
- Switching on off he unit from keyboard 7
- Temperatureandairflowsetpointadjust 7
- Clock menu and time slots setting 8
- Time slots programming examples 9
- Stopwashingfunction forcedfreecoolingatunitstart up 10
- Summer winter changeover from keyboard 11
- Input output visualization 12
- Change language and unit and software data visualization 14
- A automatic whenthealarmconditiondisappears thealarmisautomaticallyreset ac automaticcontrolled thealarmisautomaticallyresetforalimitednumberofattemptsinacertaintime after 15
- Above or by the supervisor reset variable for each alarm with manual reset the reset day and time are stored on the alarm history 15
- Alarms 15
- Eachalarmisidentifiedbyacode alxx andthealarmcauseisdescribedinthemask toresetanactivealarm 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 15
- Inthe offunit column itisreportedifthealarmstopsthewholeunitornot 15
- M manualresetfromdisplayorfromsupervisor thealarmmustbemanuallyresetbydisplayasdescribed 15
- 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 thealarmresetmodeisreportedonthe reset column 15
- That the reset becomes manual 15
- 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 15
- The mask displays the working hours of compressors 3 and 4 15
- 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 thisisanexampleofanalarmmask 15
- Yes thealarmstopstheunit no thealarmdoesnotstoptheunit butonlytheconcerneddevices 15
- 1 maintenance alarms must be reset from masks ac ad ae of the maintenance menu and they cannot be reset by 21
- 2 the alarm is reset automatically but to clear the alarm visualization it is necessary to press and hold the alarm 21
- Key for at least 2 seconds 21
- Pressing the alarm key 21
- Cm_dkn_0001_rooftop_en_06 05 2019_rev02 24
- P522681 1 24
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