Viessmann MPA51 Operating And Service Instructions page 9

Burner control unit
Status Service
Status Service
Status Service
Status Service
Status Service
Status Service
Status Service
(cont.)
Quality of the ionisation current
Note
Ionisation current > 50 is very good. If the
value is lower, measure the ionisation
current. The ionisation current should be
> 3 μA. If not, check the ionisation cable
and ionisation electrode.
Start counter with reset, 1 digit
Start counter with reset, 100 digit
Start counter with reset, 1000 digit
Hours run meter with reset, 1 digit
Hours run meter with reset, 100 digit
Hours run meter with reset, 1000 digit
Burner control unit
9