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9. Troubleshooting
If you have problems with the operation of the boiler, try some of the following solutions:
SYMPTOM CAUSE SOLUTION
The boiler is not
connected to the mains.
Connect the boiler to the mains (400V/50Hz) via
power cord with plug.
The display does not
show any data.
Boiler controller failure. Replace the boiler controller.*
Boiler drive cable Is
disconnected (or
damaged).
Connect (or replace) the boiler drive cable.*
Boiler drive is damaged. Replace the boiler drive.*
Screw feeding device
does not work.
There was a motor
overheating and thus the
motor thermal protection
was activated.
Let the motor cool, after cooling the motor will
restart automatically.
The fuel feeder contains
an obstacle (stone, etc.).
Demount the fuel feed screw and remove the
obstruction. Reassemble the feeder.*
The fuel contains a
substantial quantity of
dust.
Remove unsuitable fuel from the boiler, refill the
container with prescribed fuel.
Repeated activation of the
motor thermal protection.
The alignment of the
drive, screw shaft and
burner is not correct.
Disassemble the fuel screw feeder, clean and
reassemble it with emphasis on ensuring the
alignment of the individual components.*
The container does not
contain fuel.
Refill the container with prescribed fuel.
Overall wear of the screw
shaft.
Replace the screw shaft.*
The screw shaft rotates,
though the fuel is not
transported into the
combustion chamber.
The turnstile chain was
damaged.
Replace the turnstile chain.*
Boiler fan cable is
disconnected (or
damaged).
Connect (or replace) the boiler fan cable.* Boiler fan does not work.
The fan is damaged. Replace the boiler fan.*
The fan was clogged by
dust.
Clean the boiler fan.* The fan is noisy in
operation.
The fan bearings are
worn.
Replace the entire boiler fan.*
The fan does not rotate
during boiler modulation
at the lowest output
values.
The set values of the fan
speed are too low.
Increase the fan speed on the boiler controller
so as to guarantee its smooth operation.
Water from the
emergency fire-fighting
equipment leaked into the
fuel feeder.
The fuel burnt through to
the fuel feeder, which
activated the thermostatic
valve.
Remove wet fuel from the feeder, fill the
container with new dry fuel and start-up the
boiler.
Water from the
emergency fire-fighting
equipment leaks into the
fuel feeder.
The thermostatic valve on
the feeder leaks.
Replace the thermostatic valve.
The boiler is filled with wet
fuel.
Refill the container with dry fuel. The walls of the fuel tank
are covered with droplets
of water.
The temperature in the
boiler room is low (about
12 °C or less)
The boiler room requires a higher air
temperature (boiler room wall insulation,
installation of heating radiator to the boiler room,
etc.).
A short time passed after
firing in the boiler.
Let the boiler thoroughly flame up. The boiler cannot reach
the rated output during
operation.
Fuel dosing is set to a
lower output.
Adjust the fuel dosing according to the control
unit instruction manual.
35


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