User Instructions for GECO GH21RA controller
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Page 42 Edition I
19.06.2013
Step 3
Remove the housing cover using a
flathead screwdriver
Step 4
Disconnect the wires from the terminals,
remove the cables from the sheaths,
loosen the cable clamp strip and remove
all cables from the outside of the
controller.
Step 5
Remove the controller from the boiler by
unscrewing the 4 screws
in the lower part
the controller housing
Step 6
Replace the top cover of the housing
and front panel