Buderus Logamax GB062-24 KDE H V2 Service Manual page 33

6A
Flame not detected.
Step
B Switch off the boiler.
14.
B Remove the mix unit.
Check the diaphragm for the damage,
dirt or adhesion.
Is the diaphragm OK ?
15. Check the gas-air ratio setting (max):
B Remove the cap in the flue gas
measuring point.
B Activiate the permanent max opera-
tion mode (chimniy sweeper) via serv-
ice function 2.F3.
B Measure the CO2 / O2 value (see
instruction manual) :
Are the values correct ?
16. Check the gas-air ratio setting (min):
B Remove the cap in the flue gas
measuring point.
B Activiate the operation mode to 1 via
service function 1.2F.
B Measure the CO2 / O2 value (see
instruction manual) :
Are the values correct ?
B Switch off the boiler.
17.
B Condensate traces in the fresh air
pipe of flue gas sysyem ?
Logamax PLus GB062
Remedy
B Install the diaphragm correctly in mix-unit again.
yes:
B Install the mix-unit.
B Press the RESET button and start the boiler again.
6A ? --> 15.
B Install the ignition electrodes.
no:
B Switch on the boiler.
B Press the RESET button and start the boiler again.
6A ? --> 15.
yes: 6A ? --> 16.
B In case of deviation, correct the gas adjustment.
no:
6A ? --> 16.
yes: 6A ? --> 17.
B In case of deviation, correct the gas adjustment and
no:
close the cap again.
6A ? --> 17.
B Clean the flue gas system (maintanance).
yes:
6A ? --> 18.
no: B Switch on the boiler.
6A ? --> 18.
4
Fault finding
33