User Instructions for GECO GH21TA controller
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Page 6 Edition I
19.06.2013
ONLY A QUALIFIED WIRING TECHNICIAN MAY
CONNECT DEVICES TO THE GH21TA CONTROLLER.
5.
Controller modes
The controller can be operated in five modes:
•
Standby
– returns the controller to the state before loss of power. The controller
algorithm is not implemented, the clock operates in real time, and the chosen installation
settings are stored.
•
Automatic
- There are two sub-modes, heating and maintain
Heating – in this mode, the algorithm is implemented in the control mode selected
depending on the type of fuel
Maintain
- the controller enters this mode if the boiler temperature reaches the set point.
In this mode, an individually prepared algorithm is implemented.
•
Manual
– This mode is used only to validate the on / off (tests) for each installation of
technological equipment, so when you are sure that tests are finished, go to the automatic
mode.
•
Alarm
– Characterised by the occurrence of an alarm that prevents further operation of
the equipment or the occurrence of a warning, which allows the user to accept temporary
operation under warning conditions accepted by the user with the awareness that it is
temporary in nature. When the fault is resolved, the driver returns to the mode it was in
before.
