In most cases, VVM S320 notes a malfunction (a malfunction
can lead to disruption in comfort) and indicates this with
alarms, and instructions for action, in the display.
Info-menu
All the indoor module’s measured values are gathered under
menu 3.1 - "Operating info" in the indoor module’s menu
system. Examining the values in this menu can often make
it easier to identify the source of the fault.
Manage alarm
13.45 3
Your system has an active alarm.
Please select action or contact your installer.
I want to see more info about the alarm
I want to change settings for my system
October
13.45 3
October
The installation pump has no contact with the supply
temperature sensor. Additional heat is blocked. The installation
switches to alarm operation, which may mean a reduction of
comfort.
Select auxiliary operation and contact your installer.
Reset alarm and try again
Start auxiliary mode
In the event of an
alarm, a malfunction
has occurred and the
status lamp shines
with a steady red light.
You receive informa-
tion about the alarm
in the smartguide on
the display.
ALARM
In the event of an
alarm with a red
status lamp, a mal-
function has occurred
that VVM S320 cannot remedy itself. On the display, you
can see what type of alarm it is and reset it.
In many cases, it is sufficient to select “Reset alarm and try
again” for the installation to revert to normal operation.
If a white light comes on after selecting “Reset alarm and
try again”, the alarm has been remedied.
"Auxiliary operation" is a type of emergency mode. This
means that the installation attempts to produce heat and/or
hot water, even though there is some kind of problem. This
could mean that the heat pump’s compressor is not in oper-
ation. In this case, any electric additional heat produces heat
and/or hot water.
Caution
To select "Auxiliary operation", an alarm action
must be selected in menu 7.1.8.1 - "Alarm actions".
Caution
Selecting "Auxiliary operation" is not the same as
correcting the problem that caused the alarm. The
status lamp will therefore remain red.
Troubleshooting
If the operational interference is not shown in the display
the following tips can be used:
Basic actions
Start by checking the following items:
• Group and main fuses of the accommodation.
• The property's earth circuit breaker.
• Miniature circuit breaker for VVM S320 (FC1).
• Temperature limiter for VVM S320 (FQ10).
• Correctly set load monitor.
NIBE VVM S320Chapter 11 | Disturbances in comfort60
Disturbances in comfort
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