Kostrzewa Compact Bio 16kW Manual De Uso página 103

13. Examples of equipment failures and remedies
Failure
Automatic fuel ignition not working
- 'No fire/fuel' message
Black smoke in the combustion chamber
Not combusted fuel in the ash pan.
Flying fuel particles in combustion chamber
Not combusted fuel in the ash pan.
Set temperature not reached
Smoke coming from the boiler
Experts in biomass heating
Cause
• 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
• 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
Compact Bio / Compact Bio Luxury User Manual – EN 07.15
Remedy
• 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)
• 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
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