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Manual
NBE pellet system
TROUBLESHOOTING
Problem
Cause
Solution
ALARM
HOT DROP SHAFT
OR BACK SMOKE
1. Cinders/ash in the combustion head.
2. Ash in the boiler, smoke pipe and chimney.
3. Backflow valve installed incorrectly in the boiler.
4. No draught in chimney.
5. Performance too high (kW) in proportion to boiler.
6. Defective sensor.
7. Air flow wrong.
Clean the combustion chamber!
Clean the boiler, smoke pipe and chimney!
Rectify or remove the backflow valve panel in the boiler!
Strip the insulation in the smoke pipe, raise the chimney!
Contact your dealer!
Change the heat sensor on the printed circuit board!
Contact chimney-sweep or NBE!
ALARM
FAULTY IGNITION
1. Burner grate not fitted correctly.
2. Ash/cinders in the combustion head.
3. Damp pellets.
4. Ignition not fitted correctly.
5. Defective ignition.
6. Excessive chimney draught.
7. Photo sensor is faulty/covered in soot.
8. Blocked ventilator.
Check the burner grate.
Clean the combustion chamber!
Change supplier/storage!
Fit into quadrangular holder.
Change ignition/ignite manually!
Install a draught stabilizer in the chimney.
Clean/change the sensor.
Clean the ventilator and check that it works.
ALARM
LOW BOILER
TEMPERATURE
Boiler temperature has not exceeded 35 degrees after 2
hours of operation, or has dropped below
35 degrees when running.
Low burner performance.
Check pellet feed/ventilator!
Check that the temp. sensor is on the boiler.
ALARM
PLUG NOT FITTED
1. Plug on the burner is not fitted correctly.
2. Dirt in the plug.
3. Faulty sensor.
Check the plug on the burner !
Clean any pellet reside from the plug.
Change the sensors (photo/temperature).
Control display is black
1. Boiler overheated
2. Control fuses broken.
3. Contrast button not set on controls.
Reset overheating fuse!
Change the fuses. Check for short circuits!
Set contrast button.
Burner ejects HFI relay
1. Ignition faulty.
2. Faulty cables.
Change Ignition/ignite manually!
Check cables and plug on the burner.
Check condition of burner.
Burner goes out on “LOW STEAM”
Weak flame
1. Fuel supply instable.
2. Pellets remain in pipe.
3. Low feed is set too low.
4. Chimney draught estimated wrongly.
5. Amount in auger measured incorrectly.
Check there is no sawdust at the entrance to the auger.
Check the slope of the auger.
Check that the auger drops into the combustion chamber.
Increase chimney draught and watch LX indicator at low
performance.
Measure the auger again for 360 seconds.
Burner goes out on “PAUSE”
Weak flame
1. Pellets supply instable.
2. Pellets remain in pipe.
3. Chimney draught is set too low.
4. Chimney draught too strong.
Check there is no sawdust at the entrance to the auger.
Check the slope of the auger.
Check that the auger drops into the combustion chamber.
Watch LX indicator during pause.
Increase chimney draught.
Install a draught stabilizer in the chimney.
Excessive pellet consumption /
boiler will not reach required tem-
perature
1. Combustion set incorrectly.
2. Chimney draught too strong.
3. Backflow valve installed incorrectly in the boiler.
4. Bad boiler /low efficiency/ insulation.
5. Combustion chamber working too hard.
6. Damp pellets/poor quality.
Check that the ash is dark grey!
Measure the chimney draught / install a draught stabilizer.
Check boiler, install backflow valve.
Measure smoke temperature, insulate the boiler!
Reduce performance of combustion chamber.
Use efficient pellets.
Boiler and burner are clogged up /
black.
1. Too many pellets.
2. Lag set incorrectly.
3. Blocked ventilator.
Increase auger performance in calculation program.
Reduce chimney draught.
Clean the ventilator!
