Messages - Vaillant VRT 350f Installation Instructions Manual

tion brings the room temperature to the desired Set-back
temperature.
Hot water generation is switched off and frost protection is
activated.
If the display shows 1 Day away from home active, you can
use the rotary knob to set the desired Set-back temperature
for the heating circuit.
The advanced function is automatically deactivated after
24:00 hours or if you cancel the advanced function first. The
heating system will then return to the pre-set mode.
5.5

Messages

5.5.1 Service message
If a service is required, the controller displays a service mes-
sage in the display.
Caution.
Risk of damage to the heating installa-
tion due to failure to perform maintenance
work.
A service message indicates that the heating
installation must be serviced by the compet-
ent person. Failure to observe these service
messages could lead to material damage or
failure of the heating installation.
▶
If the controller displays a service mes-
sage, inform a skilled tradesman.
0020131979_01 Operating instructions
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.
°C
Op. mode
25