Buderus Logamax plus GB162-80 kW Service Instructions Manual page 22

5 Symptoms
section 29 Display codes and other symptoms
Main Sub-
z z
display display
code code
[\/-/\|
[\/-/\|
[\/\/\]
[\/\/}
e e
[-/a/\] [2/0/8|
1)
2)
e e
[-/h/\| [2/0/0|
1)
e e
[-/h/\| [2/0/0|
1)
3)
e e
[=/h/\| [2/0/1|
1)
e e
[0/a/\| [2/0/2|
1)
e e
[0/a/\| [3/0/5|
1)
22
Display code
z
Meaning
Operating code: A communication test is car-
ried out while starting up. This display code
flashes to check the communication between
the UBA 3 (section 1, [32]) and the control
panel (section 1, [4]) 3-5 times during a period
of 3-5 seconds while starting up. If a new UBA
3 or a new KIM has been fitted, this display
code will flash for max. 10 seconds.
Fault code: If this code continues to flash on
the display, there is a fault in the communica-
tion between the UBA 3 (section 1, [32]) and
the control panel (section 1, [4]).
Operating code:The boiler is in flue gas test
or service mode.
Flue gas test: The boiler is in heating mode at
a performance capacity of 100 % for a period
of 30 minutes. The maximum heating system
supply temperature set on the control panel
now applies (section 1, [4]).
Service mode: the boiler will run in heating
mode at a reduced performance capacity for
30 minutes. The maximum heating system
supply temperature set on the control panel
now applies (section 1, [4]).
DHW mode is not possible during the flue gas
test or during service mode.
Operating code: The boiler is in manual oper-
ation mode.
Operating code:The boiler is in flue gas test
or service mode.
Flue gas test: the boiler will run in heating
mode at 100 % performance capacity for
30 minutes. The maximum heating system
supply temperature set on the control panel
now applies (section 1, [4]).
Service mode: the boiler will run in heating
mode at a reduced performance capacity for
30 minutes. The maximum heating system
supply temperature set on the control panel
now applies (section 1, [4]).
DHW mode is not possible during the flue gas
test or during service mode.
Operating code: The boiler is in heating
mode.
Operating code: The boiler is in manual oper-
ation mode.
Operating code: The boiler is in DHW mode.
Operating code:The switch optimization pro-
gram is activated. This program is activated if
a hot water request from an RC regulator or an
ON/OFF controller occurs more frequently
than once every 10 minutes. This means that
the boiler cannot be restarted until at least
ten minutes have elapsed since initial startup
of the burner.
Operating code:The heating boiler cannot
start up temporarily after DHW mode has
ended.
Logamax plus GB162-80 kW/100 kW - Subject to modifications resulting from technical improvements!
LED on Other symptoms
UBA 3
Reset
required?
Off or
flashing
at 8 Hz
Off or No heating operation and no
flashing DHW.
at 8 Hz
Off No DHW operation.
Off
Off No DHW operation.
Off
Off
Off
Off The target room temperature
possibly is not reached.
Off
Diagnosis
→
section 66
→
section 35