Buderus Logamax plus GB142-24 Servicing Instructions page 72

7 Diagnosis
Locking boiler fault code 6C
6 C 2 2 8
Press the "Reset" button.
New fault message
Check the ionization electrode for soiling.
Damage see page 95.
Is the ionization electrode
okay?
44
page 72
6 C 3 0 6
Check that the burner is still under pressure
after the heat request has ended.
See page 108, par. 8.1.26.
Is the burner still under
pressure?
page 77
Locking boiler fault code 6C-2
72 Logamax plus GB142-24/30/45/60 - We reserve the right to make any changes due to technical modifications!
An ionization current was measured before
the burner start.
No
6 C
?
Yes
No
Yes
An ionization current was measured after the
burner switch-off.
Yes
No
44
Locking boiler-fault code.
Replace the ionization electrode.
See page 97.
Locking boiler-fault code.
Replace the gas valve.
See page 101.
8
page 31
8
page 31