22
Internal system faults
If the correct programme sequence can
no longer be guaranteed, internal sys-
tem faults occur.
Fault
code
*1
Display System charac-
teristics
Cause Measures
01, 02, 05
to 0d, 0F,
14, 15, 17,
1A to 1c,
1E, 45, 47,
Ac, b0
01, 02,
05 to 0d,
0F, 14,
15, 17,
1A to 1c,
1E, 45,
47, Ac,
b0
Fault in burner
control unit area
Internal system
fault and EMC
Replace burner
control unit
Measure against
EMC: Try connect-
ing to another
phase
F 0E, F F 0E, F Fault in burner
control unit area
EEPROM or inter-
nal system fault;
EMC fault
Have your system
tested for EMC in-
terference; replace
burner control unit
1d 1d Fault in burner
control unit area
Processor crash-
ed
Have your system
tested for EMC in-
terference; replace
burner control unit
03 03 Fault in burner
control unit
Excessive tem-
perature
(> 60 °C)
Check ambient
temperature
Faults without fault display
Fault Cause Measures
Combustion faults
due to pulsation
Excessive gas
throughput
Adjust gas throughput in accordance
with rated boiler heating output.
Insufficient or too
much air
Adjust gas throughput in accordance
with rated boiler heating output.
Condensate
banked up in flue
system
Check condensate drain.
Incorrect flue outlet Check flue outlet.
*1
All fault codes are saved to the fault memory and the last 10 can be called up.
Diagnosis
Diagnosis
(cont.)
5782 991 GB
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