Buderus Logamax plus Installation Instructions Manual page 77

Main Sub-
display display
code code
Blocking fault:
[4/l/\| [2/2/0|
The contacts for the safety temperature sensor have shorted or the safety
temperature sensor has detected a flow temperature of over 266 °F
(130 °C).
Blocking fault:
[4/p/\| [2/2/1|
The contacts for the safety temperature sensor have been interrupted.
Blocking fault:
[4/u/\| [2/2/2|
The contacts for the safety temperature sensor have shorted.
Blocking fault:
[4/y/\| [2/2/3|
The contacts for the safety temperature sensor have been interrupted.
Operating phase:
[5/h/\| [2/6/8|
Component test phase.
Locking fault:
[6/a/\| [2/2/7|
The system has detected an insufficient ionization current during the
ignition phase.
Blocking fault:
[6/a/\| [2/2/7|
The system has detected an insufficient ionization current after four
start-up attempts.
Blocking fault:
[6/c/\| [2/2/8|
The system has detected an ionization current before burner start-up.
Blocking fault:
[6/c/\| [3/0/6|
An ionization current has been measured after the burner shut down.
Blocking fault:
[6/l/\| [2/2/9|
The system has detected an insufficient ionization current during the
operating phase.
Blocking fault:
[6/p/\| [2/6/9|
The glow ignitor was activated for more than 10 minutes.
Blocking fault:
[6/y/\| [2/0/3|
The ionization current is too high.
Blocking fault:
[7/c/\| [2/3/1|
The power supply was interrupted during a locking fault
[4/a/\| [4/c/\| [4/e/\| [4/f/\|
[4/l/\| [4/p/\| [4/u/\| [4/y/\|
Blocking fault:
[7/l/\| [2/6/1|
The UBA 3 is defect.
Blocking fault:
[7/l/\| [2/8/0|
The UBA 3 is defect.
[8/y/\| [2/3/2|
Operating phase:
The external switch contact is open.
1)
Table 19 BC10 Display codes
1) Only visible on the Service Tool or a specific RC controller.
Logamax plus GB162-80 kW/100 kW - Subject to modifications resulting from technical improvements!
Display codes
Key to display code
Display information
Other effects
No heating operation and no DHW.
No heating operation and no DHW.
No heating operation and no DHW.
No heating operation and no DHW.
No heating operation and no DHW.
No heating operation and no DHW.
No heating operation and no DHW.
No heating operation and no DHW.
No heating operation and no DHW.
No heating operation and no DHW.
No heating operation and no DHW.
No heating operation.
13
77