Faults With A Fault Code - Buderus Logamax plus GB142-24 Servicing Instructions

7 Diagnosis
7.2

Faults with a fault code

The following structural diagrams can be used for the systematic
troubleshooting of faults with fault codes.
While trying to establishes the fault causes, you should always also
check the contacts of all electrical plug-and-socket connections
and the connection plugs in the UBA 3.
WARNING!
Danger to life due to electric shock.
 Switch off the Logamax plus GB142 when
testing the connections!
Whenever a fault has been remedied, you must press the "Reset"
button (for at least 5 seconds) to reset the UBA 3 to its setting
status (release).
NOTE!
Resetting is not possible by switching off the
operating switch!
If a fault is displayed again, you should follow the relevant structural
diagram to carry out further troubleshooting.
Certain trouble-shooting activities have to be carried out in the
heating mode of the Logamax plus GB142. The flue gas test or the
service mode must be activated then, see chapter „4 Operation" on
page 9, "Flue gas test" menu on page 10 and "Service Mode"
menu on page 11.
Locking boiler-fault code - (dash)
No communication between UBA 3 and
BC10.
Press the "Reset" button.
New
fault message
page 83
Operating code -A
46 Logamax plus GB142-24/30/45/60 - We reserve the right to make any changes due to technical modifications!
No
?
Yes
44
Other display code.
8
page 31