User Instructions for GECO GH21TA controller
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Page 40 Edition I
19.06.2013
In order to connect the GH21TA controller to the GA03HA room panel:
Step 1
Step 2
Step 3
Turn off the
controller with
button
And unplug the
power cable from
the wall
→
Connect the
room panel to
the controller
using
connections
58-59-60-61
as shown in
diagram 12.1
→
Insert the plug
into a 230V
socket and turn
on the controller
using the button
Diagram 12.1 connecting the GA03HA room panel to the GH21TA controller
15. In case of damage to the controller
If the controller malfunctions, contact the supplier/manufacturer of the boiler, or GECO, for
technical advice. If the controller needs to be repaired or serviced, remove it completely from the
boiler and send it along with its housing to the specified address.
Sending an incomplete controller for servicing automatically invalidates
the warranty
