Viessmann MatriX radiant burner Service Instructions Manual page 25

Gas burner control unit
Fault display
The fault display will be activated automatically if the burner control unit
switches to a fault state. The last fault will then be displayed. The light
segments of the display will flash.
Operating display
Automatic
activation
in case of fault state
Status Service
Operating display
Initial start−up, inspection and maintenance
(cont.)
Fault code
Status Service
Status Service
Press the reset button
The operating phase in
which the fault has occurred
will be displayed for as long
as key a is held down (see
flow chart on page 32)
The additional error
information will be
displayed as long as key b
is held down.
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