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heat consumer) boiler is checked and the cause for overheating is
determined and repaired, restart the burner by turning off its power supply
and then back on in order to run the burner in normal mode
;
in case of alarm mode – fuel delivery pipe overheating, the alarm thermo-
probe of the burner’s main module is activated and the control board
switches into alarm mode. This thermo-probe senses the temperature on
the surface of fuel pipe and prevents so called “back fire” process. After
the unit is cooled down and the reason for such kind of emergency
situation are clarified and special preventive measures have been taken,
then the burner should be restarted into nominal operating mode. This is
done by manual switch OFF and back ON of the power supply of the
burner. In some situations this thermo-probe could be thermally damaged
and will need renewal, in such situation please refer to service assistance.
In some cases it is possible to achieve high temperature levels in the region
of the pellet supply pipe, which will result in sensor failure and it should be
replaced by authorized technician;
5.6.
Restarting the operation of a pellet burner of series “GP”
The restarting of the burner is required in case of failure modes, for example the
burner has a start signal (and the “START” indicator is lit ), but the control
module of the burner is operating in safe mode, which is not allowing nominal
operation of the burner. The LEDs on the control module of the burner show
information for the current state of the burner. It is necessary to take precaution
measures in order to solve the problem and to remove the cause for the failure.
After that the burner should be restarted – this is performed by switching off and
back on the electrical power supply of the main module of the pellet burner
(performed for example by switching off the power supply by an automatic
circuit breaker). It is recommended to check and eventually clean the grate of
the burner before starting the burner again.
5.7.
Description of the active thermo stickers, showing the condition of the
system
The thermosticker is used to measure the operating temperature of the burner’s
body in a characteristic zone of the burner. The temperature measurement could
indirectly determine the condition of the heating system and the need for
preventive and service actions of the burner and the entire system, as well as the
flue gases duct.
