Allen, Historically I keep levels around 2700-2900. Any other ideas what could've burnt the board? I asked the pb an he had no ideas. There was the comment here about lightening storms. I wonder if it could be a something else in the configuration. I'll make a note about the salt. Glad I prefer to keep it low! My idea was always to keep it lower so it's less salt damage around the pool. We should be getting the panel put back in hoping within the hour and I'll report back. thx!You didn't answer my question.
If you have historically ran your Hayward SWG at salt levels of 3200-4000 that contributed to your board failure.
For the Hayward SWG you should run it at the lower end of it's range 2800-3000.
The control board sets the amps based on the cells salinity reading. Higher salinity will generate higher amps. Amps over 8 can overheat the thermistor. If the amps are 8.0 or higher after you replace the thermistor, you should reduce the salinity to prevent repeated failures.
Running the SWG at lower salinity keeps the amps low which reduces the heat on the board and the component failures.