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Operation and maintenance instructions – v2.8.8 & 2.7.3
- Conditions:
• PX units with modulating bypass
- Causes:
• This alarm indicates that the modulating bypass has not reached the ordered position within 10 seconds.
The most common reason for this is a damaged position sensor on the bypass actuator, and this must be replaced.
Other reasons may be that the control board output is damaged, implying the replacement of the board, or a
mechanical blocking verified by a visual inspection of the bypass
- Effects:
- Conditions:
• The basic setup parameter “Filters Resets” must be >0
- Causes:
• Alarm indicating that the hours limit for the maintenance of the filters has been reached
- Effects:
8.20 TYPE 18: ALARM INDICATING AN INCORRECT POSITION OF THE MODULATING
BYPASS RELATIVE TO THE ORDERED POSITION
8.21 TYPE 19: ALARM INDICATING THAT THE HOURS LIMIT FOR THE MAINTENANCE OF
THE FILTERS HAS BEEN REACHED
Displayed on HMI
Text displayed
LED ALARM
LED Pa
FILTERS ALARM
Red
/
TAC5 control board
AL1 relay
O.R.1
LED ALARM
LED AF
Fans
Alarm Status
/
ON
/
Stopped
Manual reset mandatory.
TAC5 control board
AL1 relay
O.R.1
LED ALARM
LED AF
Fans
/
/
ON
/
/
Auto reset: via dedicated reset
Displayed on HMI
Text displayed
LED ALARM
LED Pa
B.20
Position of the modulating bypass incorrect
RED
/
Содержание GLOBAL LP FW
Страница 15: ...15 Operation and maintenance instructions v2 8 8 2 7 3 4 3 INTERNAL WIRING DIAGRAM GLOBAL PX...
Страница 16: ...16 Operation and maintenance instructions v2 8 8 2 7 3 4 4 INTERNAL WIRING DIAGRAM GLOBAL RX TOP...
Страница 17: ...17 Operation and maintenance instructions v2 8 8 2 7 3 4 5 INTERNAL WIRING DIAGRAM GLOBAL LPFW...
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