The air/water heat pump’s compressor does
not start
• There is no heating or hot water demand, nor cooling
demand.
– VVM S320 does not call on heating, hot water or
cooling.
• Alarm tripped.
– VVM S320 temporarily blocked, see menu 3.1 - "Operat-
ing info" for more information.
Add. heat only
If you are unsuccessful in rectifying the fault, and are unable
to heat the house, you can, whilst waiting for assistance,
continue running the installation in emergency mode or
“Add. heat only” mode. “Add. heat only” mode means that
additional heat only is used to heat the house.
SET THE INSTALLATION TO ADDITIONAL HEAT
MODE
1. Go to menu 4.1 - "Operating mode".
2. Select “Add. heat only”.
EMERGENCY MODE
You can activate the emergency mode both when VVM S320
is running and when it is switched off.
To switch off, restart or activate emergency mode: press
and hold the on/off button for 2 seconds. This brings up a
menu with various options.
To activate emergency mode when VVM S320 is switched
off: press and hold the on/off button (SF1) for 5 seconds.
(Deactivate the emergency mode by pressing once.)
NIBE VVM S320Chapter 11 | Disturbances in comfort62
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