Nibe SMO 20 - Additional Heat and Alarm Data; Alarm Log Details

In most cases, SMO 20 notes a malfunction (a malfunc-
tion can lead to disruption in comfort) and indicates this
with alarms, and instructions for action, in the display.
Info-menu
All the installation’s measurement values are gathered
under menu 3.1 in the control module’s menu system.
Examining the values in this menu can often make it
easier to identify the source of the fault.
Manage alarm
info / action
reset alarm
aid mode
Low pressure alarm
alarm
In the event of an alarm, some kind of malfunction has
occurred, which is indicated by the status lamp changing
from green continuously to red continuously. In addition,
an alarm bell appears in the information window.
ALARM
In the event of an alarm with a red status lamp a mal-
function has occurred that the heat pump and/or control
module cannot remedy itself. In the display, by turning
the control knob and pressing the OK button, you can
see the type of alarm it is and reset it. You can also
choose to set the installation to aid mode.
info / action Here you can read what the alarm means
and receive tips on what you can do to correct the
problem that caused the alarm.
reset alarm In many cases, it is sufficient to select “reset
alarm” for the product to revert to normal operation. If
a green light comes on after selecting “reset alarm”,
the alarm has been remedied. If the red light is still on,
and a menu called “alarm” is visible in the display, the
problem causing the alarm still remains.
aid mode “aid mode” is a type of emergency mode.
This means that the installation produces heat and/or
hot water even if there is some kind of problem. This
could mean that the heat pump’s compressor is not in
operation. In this case, any electric additional heat pro-
duces heat and/or hot water.
Caution
To select aid mode an alarm action must be
selected in the menu 5.1.4.
Caution
Selecting "aid mode” is not the same as cor-
recting the problem that caused the alarm. The
status lamp will therefore continue to be red.
If the operational interference is not shown in the display
the following tips can be used:
BASIC ACTIONS
Start by checking the following items:
• The switch's (SF1) position.
• Group and main fuses of the accommodation.
• Miniature circuit breaker for SMO 20 (FA1).
• The property's earth circuit breaker.
NIBE SMO 20Chapter 10 | Disturbances in comfort46
10 Disturbances in comfort