User Instructions for GECO GH21TA controller
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Page 10 Edition I
19.06.2013
Button
Description
Function
Turn on/off
The main screen appears
Change modes
Switch between manual and automatic
In the ‘boiler mode bar’, Manual Mode
appears, or in the case of Automatic
Mode, the display reads Heating,
Grate Mode H, Pump only, Maintain,
or Grate mode M
Automatic mode allows a view of
devices, temperature and accompanying
features. In manual mode, view
temperature and accompanying
features, and see devices which can be
edited.
The screen shows temperature,
devices and accompanying features
From the main screen, go to the user
help menu.
From the alarm and note screen, go to
Data service
The screen shows help for users.
The screen shows product
information and service helpline
information.
Confirm change.
Enter Menu from the main screen
Saves change
Goes to Menu from the main screen
Exit without confirming changes.
Hold the button for three seconds to go
to the main screen
Exit to previous screen or higher level
menu
Right arrow
Quickly go to boiler output temperature
screen from the main screen.
Move to the next column or row on
the right.
The screen displays boiler output
temperature.
Left arrow
Quickly go to boiler output temperature
screen from the main screen.
Move to the next column or row on
the left.
The screen displays boiler output
temperature.
Up arrow
Increase value
Go to the next position above
Increase the value by one step
Down arrow
Decrease value
Go to the next position below
Decrease the value by one step
