17
Checking the ionisation current
A
C
D
B
0
1.
Switch OFF the mains isolator.
0
2.
Pull ionisation current cable plug
C
.
0
3.
Switch ON the mains isolator.
There must be a fault shutdown
after the burner has tried to start.
Fault code "F A7" flashes on display
B
.
0
4.
Switch OFF the mains isolator.
Note
Test cable no.1 is required when
checking with the Testomatik-Gas.
You can also carry out this test with
a multimeter.
0
5.
Push ionisation current cable plug
C
into adaptor
D
.
0
6.
Push test cable socket
A
onto the
ionisation electrode.
0
7.
Switch the mains isolator ON and
press reset.
0
8.
Check the ionisation current.
Note
The ionisation current should be at
least 3 µA for approx. 2 to 3 s after
the gas valve has been opened and
during operation.
0
9.
Record the actual value in the report
(on page 65).
10.
Switch the mains isolator OFF,
remove the test equipment and
reconnect the ionisation cable plug-
in connectors.
11.
Switch ON the mains isolator.
Commissioning, inspection, maintenance
Further details regarding the individual steps
(cont.)
5692 908 GB