Nibe RMU S40 Installateurhandbuch Seite 28

Disturbances in comfort
In most cases, RMU S40 notes a malfunction (a malfunction
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 indic-
ated by the status lamp shining 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 occurred. 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 cause of 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 tries to produce heat and/or hot
water, even though there is some kind of problem. This could
mean that the compressor is not in operation. In this case,
any electric additional heating produces heat and/or hot
water.
NOTE!
To select "Activate auxil. oper.", an alarm action
must be selected in the menu 7.1.8.1 – "Alarm ac-
tions" in the main product.
NOTE!
Selecting "Activate auxil. oper." is not the same as
correcting the problem that caused the alarm.
Therefore, the status lamp will remain red.
28
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.
ALARM
• If the communication is weak between the main product
and an accessory in a zone, a repeater (RPP 10) may need
12
to be installed to amplify the signal between the zones.
Alarm
Reset alarm
Wired connection
Activate auxiliary operation
• Check that the cable is correctly connected between
RMU S40 and the main product.
• Check that the addresses in the room unit's 2 - "Installa-
tion" menu and the main product's 7.2.1 - "Add/remove
accessories" menu match.
THE DISPLAY IS OFF
No information is visible on the display.
• Check that the screensaver is active by pressing the
screen.
• 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".)
RMU S40 | EN