83
Fault code
displayed
Const.
Weather-
comp.
System characteris-
tics
Cause
Measures
40
X
Mixer closes
Short circuit, flow
temperature sen-
sor, heating circuit
2 (with mixer)
Check flow temperature
sensor (see page 97)
44
X
Mixer closes
Short circuit, flow
temperature sen-
sor, heating circuit
3 (with mixer)
Check flow temperature
sensor (see page 97)
48
X
Mixer closes
Lead break, flow
temperature sen-
sor, heating circuit
2 (with mixer)
Check flow temperature
sensor (see page 97)
4C
X
Mixer closes
Lead break, flow
temperature sen-
sor, heating circuit
3 (with mixer)
Check flow temperature
sensor (see page 97)
50
X
X
No DHW heating
Short circuit, cylin-
der temperature
sensor
Check cylinder tempera-
ture sensor (see
page 92)
51
X
X
No DHW heating
Short circuit, outlet
temperature sen-
sor
Check the outlet tempera-
ture sensor (see
page 93)
58
X
X
No DHW heating
Lead break, cylin-
der temperature
sensor
Check cylinder tempera-
ture sensor (see
page 92)
59
X
X
No DHW heating
Lead break, outlet
temperature sen-
sor
Check the outlet tempera-
ture sensor (see
page 93)
A7
X
Control mode as per
delivered condition
Programming unit
faulty
Replace programming
unit
A8
X
Burner blocked. The
venting program is
started automatically
(see page 55)
Air in the internal
circulation pump or
minimum flow rate
not achieved
Vent the system if the
fault message continues
to be displayed
A9
X
If a heating circuit
with mixer is connec-
ted, the burner oper-
ates at its lower heat-
ing output.
If only one heating
circuit without mixer
is connected, the
burner is blocked.
Internal circulation
pump blocked
Check the circulation
pump
b0
X
X
Burner blocked
Short circuit, flue
gas temperature
sensor
Check the flue gas tem-
perature sensor (see
page 94).
b1
X
X
Control mode as per
delivered condition
Communication er-
ror, programming
unit
Check connections and
replace programming unit
if required
b4
X
X
Regulates as if the
outside temperature
were 0 °C
Internal fault
Replace the control unit
Troubleshooting
Fault codes
(cont.)
5773 216 GB
Diagnosis
Содержание B2TA
Страница 12: ...12 2 5 1 4 2x 3 Fig 5 Installing the boiler Removing the front panels 5773 216 GB Installation ...
Страница 13: ...13 1 2 SW17 Fig 6 Installing the boiler Siting and levelling the boiler 5773 216 GB Installation ...
Страница 23: ...23 4 1 5 2 2x 3 Fig 16 Installing the boiler Fitting the front panels 5773 216 GB Installation ...
Страница 101: ...101 Parts lists Overview of assemblies 5773 216 GB Components ...
Страница 107: ...107 Parts lists Hydraulics 5773 216 GB Components ...
Страница 118: ...118 0004 0002 0005 0006 0001 0003 Fig 77 Parts lists Miscellaneous 5773 216 GB Components ...
Страница 142: ...142 5773 216 GB ...
Страница 143: ...143 5773 216 GB ...