I took the flow sensor out and cleaned, made sure there was no build up in the cell. I also turned the power off to the unit and disconnected the sensor wiring and reconnected. When I turned the system back on I still get the general fault of no flow, check filter pump. Test results this morning were: FC 0.4, CC 0, pH 7.5, TA 70, CYA 60 and CH of 350. I know the stabilizer is a little low, but has been at this level before with no problem. Is there any way that I can test the flow switch or jumper around it so that I am not just changing parts? Thanks in advance for the help.
Forgot to mention, I added a jug of bleach to get the FC up to 4.5 and a bag of salt to see if the salinity meter would register an increase in the amount of salt. The salinity went up the expected 350ppm. The temperature reading is also correct when checked against another thermometer.