Viessmann MatriX radiant burner Service Instructions Manual page 24

Initial start−up, inspection and maintenance
Gas burner control unit
Confirming a parameter set
If
H a parameter set has been modified via the DIP switch or
H the burner control unit has been replaced,
a flashing P appears below status. The figures below service indicate the
selected parameter set (see page 25).
Status Service
U is shown below service if an invalid DIP switch setting has been selected
Status Service
1. Check the DIP setting; if required
change as on page 23.
2. Press b and a simultaneously
for approx. 2 s.
The selected parameter settings
have been accepted when P no
longer flashes, and the DHW LED
is illuminated.
3. Press reset, then the operating
display will be redisplayed.
24
(cont.)