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10
Troubleshooting
Two type of fault are distinguished:
• Burner faults and
• Control and heating system faults.
If there is a burner fault the fault indicator lamp on the
burner comes on (
burner documentation). Such faults
can generally be reset by pressing the reset button on
the burner. Controls and heating system faults are
indicated on the controls display if it has one. For further
information see
controls' documentation.
Correcting burner faults
CAUTION: Risk of system damage due to
too many resets
Too many resets can damage the burner's
ignition transformer.
B Do not press the reset button more than
three times in a row.
B If the fault does not reset after the third
attempt, try to localize and rectify the
fault with the help of the burner
documentation.
B Notify a service engineer if necessary.
B Remove the burner hood if the boiler is equipped with
an integral burner.
B Press reset button on burner.
CAUTION: Risk of system damage from
freezing.
The heating system can freeze up in cold
weather if it has been disabled by a fault
shutdown.
B Rectify the fault immediately and restart
the heating system.
B If this is not possible, protect your
heating system from freezing by draining
the heating system and hot water pipes
at the lowest point.
1
Fig. 65
Resetting the burner
1
Burner
Troubleshooting | 47
6 720 648 162-15.1T
6 720 648 162 (2011/08)
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