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5.1.3 ALARMS RESET
Performed by A2 board
Heat pump faults coming from the frigorific circuit are classified in 2 categories:
- “Manual” reset faults:
Memorized by board A2 as soon as they appear and transmitted to the system control.
The A2 board alarm light “AL” comes on steady.
Heat pump is stopped until alarm is reset.
- “Automatic” reset faults:
The A2 board alarm light “AL” flashes as soon as a fault appear. Heat pump is stopped.
If the default lasts less than 30 minutes, alarm is automatically cleared and heat pump starts again.
If it lasts longer than 30 minutes, default is memorized by board A2 and transmitted to the system control.
The alarm light “AL” then comes on steady.
Heat pump is stopped until alarm is reset.
How to reset the alarm:
Note : problem must be solved before final reset action.
Alarm reset by pressing push button « RESET » on A2
board for 5 seconds
Alarm reset by setting the system control in OFF position
See detail in corresponding technical manual
Alarm reset by switching off power supply
This action is recommended in case of problem of
setting error (E15, E16, E20, L02, L08, L09, L10, L13)
and memory (F29, F31).
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