G-406-P11 SERVICE MANUAL PAGE 9
PPUH „GECO” Sp. z o.o. Edition I RELEASE DATE 2006-10-06
3. When the automatic operation mode is activated, the controller will start the central heating
system circulation pump, if the boiler water temperature is more or equal to the factory set
value (40
0
C). Also the pump operation control diode (the vertical dash on the left hand side
of the display) goes on.
4. The controller will stop the pump if the temperature of water drops to the temperature of
pump activation minus 4 degrees Centigrade.
5. When the feeding screw stop time set has elapsed, the controller causes the feeding screw to
start operation for the preset loading time, after which the feeding screw is deactivated, etc.
(the cycle is repeated).
6. The screw feeder in the burner operates constantly.
7. The display will show the temperature of water measured. When the pushbutton is
pressed, all the equipment is deactivated and the manual operation mode resumed.
8. When the pushbutton is pressed, the controller enters the programming mode which
does not affect the automatic operation mode.
Sustaining mode operation
This state is signalled by the bottom and top control diode on the pushbutton.
In this state the pump is working in the same way as in the automatic mode.
After the sustaining time has elapsed (“u3” user parameter), the controller will start the feeding
screw and the fan for the factory set time. The fan will operate correspondingly longer (“u4”
parameter) than the feeding screw so that the added fuel can start burning.
When the pushbutton is pressed, the programming mode is entered, similarly to the automatic
operation mode.
When the pushbutton is pressed, all the equipment is deactivated and the manual control
operation mode is resumed.
Alarm modes
Five alarm modes are recognized by the controller. Except for AL4, the number of alarm will be
shown, as well as the acoustic alarm output will be activated for the period of two seconds. Then
this output will be deactivated for the period of two seconds, to be activated again, etc.. Except for
the AL4, the abandonment of the alarm modes is possible only when the pushbutton is
pressed.
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