Kostrzewa Mini Bio Luxury Notice Technique page 72

14. End notes for installers
72
Table 4. Failure chart
Failure
The feed screw does not turn,
despite being signalled as functioning
No air intake despite the fan being
signalled as functioning
Automatic fuel ignition not working
Black smoke in the combustion chamber.
Not combusted fuel in the ash pan.
Flying fuel particles in combustion chamber.
Non combusted fuel in the ash pan.
Set temperature not reached
Smoke coming from the boiler
Leader in pellet boilers
Cause
• no power to gear motor
• wrong wiring of power cables
• the feeder is blocked
• gear motor failure
• control module failure
• no power to the fan
• fan failure
• control module failure
• incorrect heating element connection
• heating element hot air outlet blocked
• heating element failure
• flame sensor contamination/failure
• flame sensor opening at the
rear grate wall contaminated
• incorrect air volume
• incorrect feed and pause time for individual
power settings
• incorrect air volume
• incorrect feed and pause time for individual
power settings
• incorrect boiler for the given building
• sensor failure
• incorrect location of the return water
temperature sensor
• boiler power set too low
• blocked flue
• boiler extension duct blocked
• heat exchanger channels blocked
Remedy
• check control module plugs and
connectors
• check the connection of the gear motor
to the screw shaft
• check if the feeder duct is not blocked and
that the screw shaft can rotate freely in the
duct
• check fan plugs and cables
(with connectors)
• replace fan
• replace control module
• 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)
• reduce air volume, check feed
and pause time (burner power too high)
• check if boiler selection is correct
• check sensors
• check return sensor location
(water circulation required)
• check burner feed and pause times
• clean the ducts and channels
Mini Bio Luxury 12; 21kW User Manual – EN 10.17