I'm not sure what to do here. Hope you can help.
I had a service tech out a few weeks ago and he told me that the chlorinator was shot, and the controller was too. I got both of them on line, and replaced them myseld instead of the exorbidant charges they wanted for the parts.
Problem is, now the system indicates "Chlorinator Off - Low Temperature". But I'm certain the water is not cold - this is florida in September. Water is 80+. I checked the fuse and it's good.
Its a Hayward PS-4 system with a T-Cell-15 chlorine generator.
Any ideas would be most appreciated!

My guess is something was left unplugged or there's a loose connection or the wires to the sensors were installed in the wrong slot.

There's an old saying amongst mechanics that is appropriate here: The last thing you worked on is the first thing that breaks.

thanks for the reply.

Anyone else?

Check all the connections. It surely sounds like a bad temp sensor connection.