Checking The Ionisation Current - Viessmann MatriX Service Instructions Manual

Commissioning, inspection, maintenance
Further details regarding the individual steps

Checking the ionisation current

01. Switch OFF the main isolator.
02. Pull off ionisation current cable plug
C.
14
B
D C
4. Record the actual value in the report
(on page 45).
Rechecking the values
Ramp up and down to the upper and
lower outputs again using the pro-
gramming unit in the burner control
unit. If the values do not match the
permissible CO
the table on pages 13 and 13, repeat
the steps for the upper and lower out-
put.
5. Press "S" D and "-" C simultane-
ously. The burner is now in operating
mode.
03. Switch ON the main isolator.
There must be a fault shutdown
after two burner starts have been
attempted. Fault code "F 25" flashes
in display A.
(cont.)
content according to
2
A