TROUBLESHOOTING:
Problem. Possible cause. Possible solution.
Alarm RPM RPM sensor defective. Change the fan.
Change to % regulation at the fan.
No power to the controller Defective fuse in the controller. Replace the fuse to a new one.
Safety thermostat not active. Reconnect by firmly pressing the red button.
The controller has been
overvoltage. Send controller to NBE for repair.
The burner deactivate
residual current
protection Electric ignition is faulty. Change the electric ignition to a new.
Current leak in a component. Note when RCD deactivate, replace the component.
Cables exposed. Check cables, insulate them if possible.
Too high pellet
consumption Lean burning. Make a new adjustment of the burner.
Too high chimney draft. Install draft stabilizer in the chimney.
Uninsulated pipes in the
installation. Insulate with pipe insulation.
Too many electric
ignitions Flow in the system is fluctuating.
Set the pressure controlled circulation pump to fixed
pressure.
External thermostat unstable. Set ”External wait” up in the controller.
Unburnt pellets in the ash Lean burning. Make a new adjustment of the burner.
The grate is placed incorrectly. Mount it correctly.
Too many pellets on the grate. Make a new adjustment of the burner.
The fan is adjusted too high. Make a new adjustment of the burner.
Too high chimney draft. Install a draft stabilizer in the chimney.
Cinders on the grate Blower cleaning is not sufficient.
Adjust the fan % up to clean, and the time between the
down.
Clean the grate mechanical more frequently.
Poor quality pellets. Change supplier.
Mount compressor cleaning.
Change the grate to a model that is more open.
Fat combustion. Adjust the fan up at 10, 50 and 100 % power.
Adjust the burner power down in ”auto calculation”.
The boiler is condensing Too low chimney temperature. See page 27 about flue gas condensation.
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