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Display:
Error code:
Description:
Cause and Remedy:
Error code:
Description:
Cause and Remedy:
Error code:
Description:
Cause and Remedy:
Operating Manual
4
Negative draft input open, measuring circuit from negative draft meas-
urement open
signal incorrect
signal cable defect
signal too low
combustion chamber leak
5
Negative draft input short-circuit, measuring circuit from negative
draft measurement is shorted out
signal incorrect
signal cable defect
signal too high
6
Negative draft pressure in boiler is not achieved
negative draft tube disconnec-
ted
negative draft does not
change
Negative draft pressure
too low
check polarity and signal
►
(0-10V)
replace sensor
►
signal below 0V
►
check closure of boiler door
►
check polarity and signal
►
(0-10V)
replace sensor
►
signal above 10V
►
connect up negative draft
►
tube
Check negative draft tube for
leaks. Check flue gas tube for
►
blockage.
Close boiler door, check tube
to negative draft sensor, check
whether boiler flue gas outlet
is clear, check whether con-
►
densation heat exchanger is
clear. Make sure flue gas fan is
running.
11 Malfunctions
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