Troubleshooting - Kostrzewa Mini Bio Manual De Uso

13. Troubleshooting

Failure
The display shows 'burner sensor
short-circuit' message
The display shows 'heat exchanger
overheating' or 'STB open' message
The display shows 'burner overheating'
message
No indications on the display
Control system button(s) not working
Automatic fuel ignition not working -
'No fire/fuel' message
Black smoke in the combustion chamber
Not combusted fuel in the ash pan
Experts in heating
Cause
Incorrect burner plate sensor
installation
Burner plate outlet damage
Burner duct damage
Incorrect boiler temperature sensor
installation
Boiler temperature sensor failure
No heat removal
STB safety temperature limiter
Incorrect sensor installation
Feeder sensor failure
Fouled burner grate - sinter on the
grate
No power supply
Incorrect connection of control
system plugs and cables
High control humidity
Display failure
Control panel failure
Incorrect settings of heating
element, heating time and fire test
Incorrect heating element
connection
Heating element hot air outlet
blocked
Heating element failure
Flame sensor fouling/failure
Flame sensor opening at the rear
grate wall fouled
Incorrect air volume
Incorrect feed and pause time for
specific power
Mini Bio and Mini Bio Luxury User Manual - ENGV 08.15
Remedy
Check sensor installation
Check plate outlet
Check burner duct
Check correct sensor position
Check the sensor connection in the
control
Boiler pump failure
Repair or replace control
Check sensor installation
Replace feeder sensor
Clean burner grate
Check power supply connections
Check control plugs
and connectors
Control replacement / repair
Control system repair
Change settings
Check heating element plugs and
cables (with connectors)
Clean igniter opening
High fuel moisture content
Replace heating element
Replace or clean the flame sensor
Clean flame sensor opening
Reduce air volume, check feed and
pause time (burner power too high)
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