Yes
Fan starts
No
After approx.
51 seconds
Check cables and
plug-in connec-
tions
Fault
F9
Yes
Differential pres-
sure sensor
enables start
(0.75 V across
terminals X8.5
and X8.6)
No
After approx.
51 seconds
Check fan cables
and fan plug-in
connections,
check fan
Fault
E6
Yes
Ignition
No
Fault
Check the ignition
module (control
voltage 230 V
across plugs X2.1
and X2.2)
F4
Yes
Gas combination
valve opens
No
Fault
Check the gas
combination valve
(control voltage
230 V), check the
gas supply pres-
sure
F4
Yes
Ionisation cur-
rent builds
(higher than
5 µA)
No
Fault
Check electrode
adjustment and
check the gas
pipe for airlocks
Symbol
A
F4
Further details regarding the individual steps
(cont.)
11
Initial start-up, inspection, maintenance
56
92
548
GB
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