I have an Aqua Logic PS-8 controller. The pump comes on at the programmed time but no other commands work (such as service mode, lights, etc). Even when the pump is off I cannot mannually get it to turn on by pressing 'Filter' button on the controller. Also. the 'check system' LED is on and the readout says to inspect cell. I cleaned the salt cell and it wont reset the error when holding the + button for 3 seconds. Anyone have any ideas on these problems? Thanks!