Vaillant VRT 350 Operating Instructions Manual page 24

Service heat generator 1
22,5
Desired temperature 20,0°C
Menu
The following service messages may appear:
–
Service heat generator 1
–
Service (of the heating installation)
5.5.2 Fault message
If a fault occurs in the heating installation, the controller dis-
plays a fault message in the display.
Caution.
Risk of damage to the heating installation
due to failure to perform troubleshooting
work.
A fault message indicates that the skilled
tradesman must perform troubleshooting or
repair work on the heating installation. Failure
to take notice of these fault messages may
lead to material damage or a breakdown of
the heating system.
24
°C
Op. mode
▶
If the control displays a fault message,
inform a competent person.
!
Heat generator 1 fault
Back
If the controller shows a fault message in the display instead
of the basic display and you press the left-hand selection
button Back then the basic display appears again.
You can also read current fault messages under Menu → In-
formation → System status → Status. As soon as a fault
message for the heating installation appears, the Status set-
ting level will display Fault. In this case, the right-hand func-
tion key has the function Display.
Operating instructions 0020135485_02