Troubleshooting in marathon
®
gas and dual fuel burners
dreizler A 3001 E - 18.12.2015 | A 2012 - 1.09 | EN - 23.10.2009
160
Error
Possible cause
Trouble shooting
The air pressure switch out-
puts an error during pre-purg-
ing.
The air pressure switch failed to
switch.
Setpoint value is too high and must
be reduced.
Reverse polarity of blower motor in
case of incorrect rotational direc-
tion.
Replace air pressure switch where
required.
Check signal lines of air pressure
switch for contamination.