Viessmann VITOCROSSAL 200 Service Instructions Manual page 49

Diagnosis
(cont.)
Fault Display
code *1
01, 02, 05 01, 02,
to 0d, 0F, 05 to 0d,
14, 15, 17, 0F, 14,
1A to 1c, 15, 17,
1E, 45, 47, 1A to 1c,
Ac, b0 1E, 45,
47, Ac,
b0
F 0E, F F 0E, F
1d 1d
03 03
Faults without fault display
Fault
Combustion fault
through pulsation
Whining noises
*1 All fault codes are saved to the fault memory and the last 10 can be called up.
System charac-
teristics
Fault in area of
burner control unit
Fault in area of
burner control unit
Fault in area of
burner control unit
Fault in burner
control unit
Cause
Excessive gas
throughput
Too little or too much
air
Condensate banked
up in flue gas sys-
tem
Incorrect flue
draught
Incorrect CO set-
2
tings; air shortage or
excess
Cause
Internal system
fault and EMC
EEPROM or inter-
nal system fault;
EMC fault
Processor
crashed
Excessive tem-
perature
(> 60 °C)
Measure
Adjust gas throughput in accordance
with rated boiler output
Adjust gas throughput in accordance
with rated boiler output
Check condensate drain
Check flue draught
Adjust burner in accordance with the
details on page 14
Troubleshooting
Measure
Replace burner
control unit
EMC measure: try
connecting to
another phase
Have your system
tested for EMC
interference;
replace burner
control unit
Have your system
tested for EMC
interference;
replace burner
control unit
Check ambient
temperature
49