68
Fault code dis-
played
System characteristics
Cause
Measures
9F
Control mode
Solar control module or
Vitosolic fault
Replace solar control module or
Vitosolic.
A3
Burner blocked.
Flue gas temperature sen-
sor incorrectly positioned.
Fit flue gas temperature sensor
correctly (see page 75).
A7
Control mode with incorrect
time
Programming unit faulty
Replace the programming unit.
b0
Burner blocked
Short circuit, flue gas tem-
perature sensor
Check flue gas temperature sen-
sor.
b1
Control mode as per deliv-
ered condition
Communication error, pro-
gramming unit
Check connections; replace pro-
gramming unit if necessary.
b5
Control mode as per deliv-
ered condition
Internal fault
Replace control unit.
b7
Burner blocked
Boiler coding card fault
Plug in boiler coding card or re-
place if faulty.
b8
Burner blocked
Lead break, flue gas tem-
perature sensor
Check flue gas temperature sen-
sor.
bA
Mixer regulates to 20 °C flow
temperature.
Communication error, ex-
tension kit for heating cir-
cuit 2 (with mixer)
Check extension kit connections
and code.
bb
Mixer regulates to 20 °C flow
temperature.
Communication error, ex-
tension kit for heating cir-
cuit 3 (with mixer)
Check extension kit connections
and code.
bC
Control mode without remote
control
Communication error,
Vitotrol remote control,
heating circuit 1 (without
mixer)
Check connections, cable, coding
address "A0" in the
"Heating cir-
cuit"
group and remote control set-
tings (see page 102).
For wireless remote control units:
check connection; place remote
control close to the boiler.
bd
Control mode without remote
control
Communication error,
Vitotrol remote control,
heating circuit 2 (with mix-
er)
Check connections, cable, coding
address "A0" in the
"Heating cir-
cuit"
group and remote control set-
tings (see page 102).
For wireless remote control units:
check connection; place remote
control close to the boiler.
bE
Control mode without remote
control
Communication error,
Vitotrol remote control,
heating circuit 3 (with mix-
er)
Check connections, cable, coding
address "A0" in the
"Heating cir-
cuit"
group and remote control set-
tings (see page 102).
For wireless remote control units:
check connection; place remote
control close to the boiler.
bF
Control mode
Incorrect LON communi-
cation module
Replace LON communication mod-
ule.
C1
Control mode
Communication error, EA1
extension
Check connections.
C2
Control mode
Communication error, so-
lar control module or
Vitosolic
Check solar control module or
Vitosolic.
C3
Control mode
Communication error,
AM1 extension
Check connections.
Troubleshooting
Fault codes
(cont.)
5686 293 GB
Diagnosis
Содержание J3HA
Страница 10: ...10 2x 1 2 4 3 Fig 2 Installation sequence Mounting the boiler and making connections 5686 293 GB Installation ...
Страница 21: ...21 2 3 2x 1 Fig 14 Installation sequence Fitting the front panel 5686 293 GB Installation ...
Страница 78: ...78 Troubleshooting Maintenance cont 5686 293 GB Diagnosis ...
Страница 90: ...90 0004 0006 0005 0003 0001 0002 Fig 51 Parts lists Miscellaneous assembly 5686 293 GB Components ...
Страница 114: ...114 5686 293 GB ...
Страница 115: ...115 5686 293 GB ...