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Giles gef-720

Question asked by scott355s10 on Feb 9, 2018
Latest reply on Feb 16, 2018 by fixbear

Working on a Giles gen-720 without the vent hood but for some reason I keep getting a change charcoal filter on the display. It will not let me in the service mode or do anything. I tried replacing the controller and still the same problem. Has anyone else have this issue.