Buderus Logamax plus GB162-L.B. 80 kW Installation Instructions Manual page 53

Main display Sub display
code code Key to display code
[a/2/1| [8/0/6|
Locking fault:
RC20-HK1 temperature sensor. The integrated temperature sensor of the
remote control (control unit) of heating circuit 1 is defective.
[a/2/1| [8/1/6|
Locking fault:
The contacts to the heating circuit flow sensor have shorted or are
interrupted, the sensor has been connected incorrectly or is defective.
[a/3/2| [8/0/7|
Locking fault:
The contacts to the heating circuit flow sensor have shorted or are
interrupted, the sensor has been connected incorrectly or is defective.
[a/3/2| [8/1/6|
Locking fault:
MM10 not available or no communication. The heating circuit addresses on
the MM10 and the RC35 do not match up, the MM10 or the bus circuit is
connected incorrectly or is defective, MM10 is not recognized by the RC35.
[c/a/\| [2/8/6|
Blocking fault:
The return temperature sensor has measured a return temperature higher
than 221 °F (105 °C)
[c/0/\| [2/8/8|
Blocking fault:
The contacts for the pressure sensor have been interrupted or have
shorted.
[c/0/\| [2/8/9|
Blocking fault:
The contacts for the pressure sensor have shorted.
[c/u/\| [2/4/0|
Blocking fault:
The contacts for the return temperature sensor have shorted.
[c/y/\| [2/4/1|
Blocking fault:
The contacts for the return temperature sensor have been interrupted.
[e/l/\| [2/9/0|
Locking fault:
The UBA 3 or the KIM is defective.
[e/\/\| [2/4/2|
Blocking fault:
3)
The UBA 3 or the KIM is defective.
thru
[2/8/7|
[h/\/7|
Operating phase:
The system pressure is too low (less than 12 psi [0.8 bar]).
[h/\/7|
Operating phase:
The system pressure is too low (less than 12 psi [0.8 bar]).
[p/-.-|
Operating phase:
The system pressure is too high (higher than 58 psi [4.0 bar]).
[\/r/e|
Locking fault:
Reset is carried out. This code appears after the "Reset" button on the
display was pressed for 5 seconds.
Table 23 Display codes
1) Any display code with a dot in bottom right hand corner.
2) Any display code with a blinking dot in bottom right hand corner.
3) Any display code starting with the letter E (except EL).
Logamax plus GB162-L.B. 80 kW / 100 kW – 6720645916 (2014/10)
Display codes
Display information
Other effects
Since there is no actual room temperature
information, room influence and
optimization of the switch times do not
work. The EMS works on the basis of the
values last set on the remote control.
Since there is no actual room temperature
information, room influence and
optimization of the switch times do not
work.
Heating circuit pump 2 is activated
depending on the preset value. The power
to the mixer is switched off and the mixer
stays in the state it was last put in (can be
adjusted manually).
Heating circuit 2 cannot be operated
correctly. MM10 and the mixer
automatically goes into emergency
operation. Heating circuit pump 2 is
activated continuously. Monitor data in the
RC35 is invalid.
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.
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