We have a 12X24 Ester Williams on ground pool with a Compupool Salt Sytem and about 4 days ago the Water Fault LED light illuminated and we are trying to fix it ourselves without having to pay a pool company a bunch of money to come out. In the Troubleshooting guide in the back of the manual it says to Check the Water Flow through cell is low. and we seem to think this might be the issue. We are wondering however how you check for air in the system, which is the first thing they ask you to check in this case.
We really hope someone can help!