The air/water heat pump’s compressor does
not start
• There is no heating or cooling demand (accessory is
required for cooling).
– VVM 500 does not call on heating, cooling or hot
water.
• Compressor blocked due to the temperature condi-
tions.
– Wait until the temperature is within the product’s
working range.
• Minimum time between compressor starts has not
been reached.
– Wait for at least 30 minutes and then check if the
compressor has started.
• Alarm tripped.
– VVM 500 temporarily blocked, see menu 3.2 "Com-
pressor information".
Electrical addition 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 heat pump in ”add.
heat only”. This means that additional heating only is
used to heat the house.
SET THE INSTALLATION TO ADDITIONAL
HEAT MODE
1.
Go to menu 4.2 op. mode.
2.
Mark ”add. heat only” using the control knob and
then press the OK button.
3.
Return to the main menus by pressing the Back
button.
NIBE VVM 500Chapter 10 | Disturbances in comfort62
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