Checking The Ionisation Current - Viessmann VITOCROSSAL 200 Instructions Manual

Further details regarding the individual steps

Checking the ionisation current

01. Switch OFF the main isolator.
02. Pull ionisation current cable plug
C.
03. Switch ON the main isolator.
There must be a fault shutdown
after the burner has tried to start.
The fault code "F 25" flashes in dis-
play B.
04. Switch OFF the main isolator.
Note
Test cable no.1 is required when
checking with the Testomatik-Gas.
You can also carry out this test with
a multimeter.
05. Push ionisation current cable plug
C into adaptor D.
06. Push test cable socket A onto the
ionisation electrode.
A
D C
Commissioning, inspection, maintenance
07. Switch the main isolator ON and
press reset.
08. Check the ionisation current.
Note
Approx. 2 to 3 s after the gas valve
has been opened and during oper-
ation, the ionisation current should
be at least 3 µA.
09. Record the actual value in the report
(on page 61).
10. Switch the main isolator OFF,
remove the test equipment and
reconnect the ionisation cable plug-
in connectors.
11. Switch ON the main isolator.
(cont.)
B
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