Buderus Logamax plus GB162-80 kW Service Instructions Manual page 27

section 29 Display codes and other symptoms
Main Sub-
z z
display display
code code
e e
[9/p/\| [2/3/9|
e e
[9/u/\| [2/3/3|
e e
[a/0/1| [8/0/0|
e e
[a/0/1| [8/0/8|
e e
[a/0/1| [8/0/9|
e e
[a/0/1| [8/1/0|
e e
[a/0/1| [8/1/1|
e e
[a/0/1| [8/1/6|
e e
[a/0/1| [8/2/8|
e e
[a/0/1| [8/1/6|
e e
[a/1/1| [8/0/6|
e e
[a/1/1| [8/1/6|
e e
[a/1/1| [8/4/0|
e e
[a/1/1| [8/4/1|
e e
[a/1/1| [8/1/5|
e e
[a/1/1| [8/1/6|
e e
[a/1/8| [8/2/5|
e e
[a/2/1| [8/1/6|
e e
[a/2/2| [8/1/6|
e e
[a/2/3| [8/1/6|
e e
[a/3/2| [8/0/7|
Logamax plus GB162-80 kW/100 kW - Subject to modifications resulting from technical improvements!
Display code
z
Meaning
e
Locking fault code: The UBA 3 (section 1,
[32]) or the KIM is defective.
e
Locking fault code: The UBA 3 (section 1,
[32]) or the KIM is defective.
e
Blocking fault code: The contacts for the out-
door-temperature sensor are open or have
shorted.
e
Blocking fault code: The contacts for the
DHW temperature sensor are open or have
shorted.
e
Blocking fault code: The contacts for the
DHW temperature sensor 2 are open or have
shorted.
e
Blocking fault code: DHW mode was active
for 4 hours without any interruption, while a
heat demand occurred as well. The DHW
heating system has been switched off after this
period of 4 hours, while the boiler is in heating
mode.
e
Blocking fault code: Thermal disinfection has
been switched off.
e
Blocking fault code: The UBA 3 bus is over-
loaded.
e
Blocking fault code: The water pressure indi-
cation of the heating system does not work.
e
Blocking fault code: No communication
between the room thermostat and the control
panel (section 1, [4]).
e
Blocking fault code: The room thermostat
sensor indicates a fault.
e
Blocking fault code: No communication with
the RC35 takes place.
e
Blocking fault code: Select RC35 as one of
the heating circuit addresses.
e
Blocking fault code: Activate at least one
heating circuit address via the service menu.
e
Blocking fault code: The switch module sen-
sor indicates a fault.
e
Blocking fault code: No communication with
the switch module.
e
Blocking fault code: Two RC room thermo-
stats are connected; they have been assigned
the wrong heating circuit addresses.
e
Blocking fault code: There is no communica-
tion between heating circuit address 1 and the
corresponding room thermostat.
e
Blocking fault code: There is no communica-
tion between heating circuit address 2 and the
corresponding room thermostat.
e
Blocking fault code: There is no communica-
tion between heating circuit address 3 and the
corresponding room thermostat.
e
Blocking fault code: The supply temperature
sensor of heating circuit address 2 indicates a
fault.
LED on Other symptoms
UBA 3
Reset
required?
Yes flashing No heating operation and no
1 Hz DHW.
4) 6) 7) 8)
Yes flashing No heating operation and no
1 Hz DHW.
4) 6) 7) 8)
No Off A minimum outdoor tempera-
ture of - 40 °F (- 40 °C) is
assumed. This may cause the
room temperature to be too
high.
No Off Heating operation, but no hot
water.
No Off Heating operation, but no hot
water.
No Off Heating operation, but no hot
water.
No Off The tank has not been disin-
fected.
No Off No heating operation and no
DHW.
No Off No heating operation and no
DHW.
No Off The BC10 settings are not
shown on the RC thermostat.
No Off
No Off
No Off
No Off
No Off Heating system supply tem-
perature at heating circuit
addresses too low.
No Off The heating circuit pump is run
continuously.
No Off
No Off
No Off
No Off
No Off The mixer is not activated any-
more and stays in its last posi-
tion.
Symptoms 5
Diagnosis
→
section 66
→
section 66
→
section 64
→
section 65
27