Disturbances In Comfort - Nibe RMU S40 Installateurhandbuch

Disturbances in
comfort
In most cases, RMU S40 notes a malfunction (a malfunc-
tion can lead to disruption in comfort) and indicates this
with alarms, and instructions for action, in the display.
MANAGE ALARM
In the event of an alarm, some type
of malfunction has occurred, which
is indicated by the status lamp shin-
ing with a steady red light. A dialogue
box appears in the display, containing
information about the alarm.
ALARM
In the event of an alarm with a red
status lamp, a malfunction has oc-
curred. The display shows what type
of alarm it is and lets you reset the
alarm.
In many cases, it is sufficient to select
"Reset alarm" for the installation to
revert to normal operation.
If the alarm indication disappears after
you have selected "Reset alarm", the alarm has been
remedied. If the alarm recurs, the cause of the problem
remains.
"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 com-
pressor is not in operation. In this case, any electric ad-
ditional 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 ac-
tions" in the main product.
Caution
Selecting "Auxiliary operation" is not the same
as correcting the problem that caused the
alarm. The status lamp will therefore remain
red.
26
TROUBLESHOOTING
COMMUNICATION ERROR
RMU S40 has lost contact with the main product.
Wireless connection
• Check that the distance between the main product
and RMU S40 is not too great.
• If the communication is weak between the main
product and an accessory in a zone, a repeater
(RPP 10) may need to be installed to amplify the signal
Heating
between the zones.
Alarm
Below is a brief description Wired connection
of the alarm, as well as
proposed actions. • Check that the cable is correctly connected between
RMU S40 and the main product.
Show more information
• Check that the addresses in the room unit's "Installa-
tion" menu and the main product's 7.2.1 menu corres-
pond.
ALARM
THE DISPLAY IS OFF
No information is visible on the display.
12
Alarm
• Check that the screensaver is active by pressing the
Reset alarm
screen.
Activate auxiliary operation
• Check that the On/Off button is set to On.
• Check that the cable is correctly connected between
RMU S40 and the main product.
• If RMU S40 is set to "Night mode", the display is off.
(See Menu 1 – Night mode.)
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