EMERGENCY MODE
Emergency mode is used in event of operational interference
and in conjunction with service.
When S1156 is put into emergency mode, the system works
as follows:
• The compressor is blocked.
• S1156 prioritises heating production.
• Hot water is produced if possible.
• Max output for the immersion heater in emergency mode,
limited according to the setting in menu 7.1.8.2 - "Emer-
gency mode".
• Fixed supply temperature if the system has no value from
the outdoor temperature sensor (BT1).
When the emergency mode is active, the status lamp is yel-
low.
You can activate the emergency mode both when S1156 is
running and when it is switched off.
To activate when S1156 is running: press and hold the on/off
button (SF1) for 2 seconds and select "emergency mode"
from the shutdown menu.
To activate emergency mode when S1156 is switched off:
press and hold the on/off button (SF1) for 5 seconds. (De-
activate the emergency mode by pressing once.)
29Chapter 5 | Electrical connectionsNIBE S1156
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