Ventilation
• Activate ventilation by pressing field no. 2. The function is automatically switched off after 30 minutes.
• By shortly pressing the filed 2 again, the ventilation is deactivated.
• By shutting down the heat pump with the on/off options the ventilation is deactivated.
• In case of power failure while the ventilation is activated, the ventilation will proceed after the reconnection of the power supply
for the remaining time but no longer than 30 minutes.
• In the event of any other failure the ventilation is deactivated.
• Ventilation cannot be activated:
- in case of any kind of failure
- during antilegionella function operation
- during defrosting.
Symbol 2 is active and visible.
Backup mode (Models ZG and ZGNT)
• Activate backup mode by pressing field no. 2.
• Backup mode uses heaters and is activated when an error occurs on the aggregate.
The water is heated with heaters.
• By pressing field no. 2 backup mode is deactivated.
• Symbol 3 is displayed.
• If the backup mode is activated, please contact the maintenance services.
Operation signalization
Antilegionella programme:
• activated – control field 17 is displayed
• deactivated – control field 17 is not displayed
Electrical heater:
• activated – control field 14 is displayed
• deactivated – control field 14 is not displayed
Heat pump:
• activated – control field 16 is displayed
• deactivated – control field 16 is not displayed
On/off:
• activated – control field 9 and other fields are displayed
• deactivated – control field 9 is displayed
Defrosting:
• activated – control field 19 is displayed
• deactivated – control field 19 is not displayed
Fan on/off:
• activated – control field 20 is displayed
• deactivated – control field 20 is not displayed
Ventilation on/off (by pressing field no. 2):
• activated – control field 2 is displayed
Backup mode on/off (by pressing field no. 2):
• activated – control field 3 is displayed
• deactivated – control field 3 is not displayed
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