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13. Troubleshooting
Failure
Flying fuel particles in combustion
chamber Not combusted fuel
in the ash pan
Set temperature not reached
Smoke coming from the boiler
Experts in heating
Cause
Incorrect air volume
Incorrect feed and pause time for
specific power
Incorrect boiler size
Sensor failure
Incorrect location of the return
water temperature sensor
Set boiler power too low
Blocked flue
Boiler extension duct blocked
Heat exchanger channels blocked
Mini Bio and Mini Bio Luxury User Manual - ENGV 08.15
Remedy
Reduce air volume, check feed and
pause time (burner power too high)
Check correct boiler selection
Sensor check
Check return sensor location
(water circulation required)
Check burner feed and pause
times
Clean the ducts and channels