Vaillant VRT 392 - Status and Error Messages; Status Messages; Fault Signal

Operating Manual VRT 392 18
5 Status and error messages
Status and error messages are displayed in the second
row of the area for basic data.
Status messages
– Holiday programme active
Within a set holiday time period the heating is
controlled to the room target temperature for this
period.
– Maintenance + telephone number of the installer
Indicates maintenance for the heating system is
required.
In addition, the telephone number of the installer
appears if it has been programmed in by him.
Fault signal
Fault at boiler.
Indicates a fault in the boiler.
⇒ Contact your installer.
If the display remains dark or if you can‘t manage any
changes in the display with the dials, the device is faulty.
⇒ Contact your installer.
5 Status and error messages