Status lamp
The status lamp indicates the status of the indoor module. It:
• lights green during normal operation.
• lights yellow in emergency mode.
• lights red in the event of a deployed alarm.
B
OK button
The OK button is used to:
• confirm selections of sub menus/options/set values/page in the
start guide.
C
Back button
The back button is used to:
• go back to the previous menu.
• change a setting that has not been confirmed.
D
Control knob
The control knob can be turned to the right or left. You can:
• scroll in menus and between options.
• increase and decrease the values.
• change page in multiple page instructions (for example help text
and service info).
E
Switch
The switch assumes three positions:
•
On ()
•
Standby ( )
•
Emergency mode ( )
Emergency mode must only be used if there is a fault in the electric
boiler/indoor module. In this mode, the compressor switches off
and the immersion heater engages. The indoor module display is
not illuminated and the status lamp shines yellow.
F
13Chapter 2 | The heating installation – the heart of the houseNIBE VVM 225
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