Fault Indicator On Display; Resetting A Burner Fault - Viessmann VITODENS 100-W Operating Instructions Manual

What to do if...

Fault indicator on display

Any fault in the heating system will be
shown on the display.
You can check the fault code on the dis-
play and then notify your heating con-
tractor accordingly. This allows the heat-
ing contractor to better prepare for the
service call and may save additional
travelling costs.

Resetting a burner fault

Note
If the " U " fault flashes on the display and
a fault code with "F" is shown, the burner
is locked out.
r
20
f 2
Turn rotary selector "rt" to "U
RESET" for less than 2 s, then back into
the control range.