I've not had any problems with my GL-235 Goldline control system until now. I have my pool set at 90, and for years, once that is satisfied, the Goldline tells my pump to shut off, and it has without fail, until now.
For the past couple of days, it heats to 91 or even 92 and the pump keeps running (and the valve actuator is sending water to the panels). For grins, I dialed it down to 85 while it was running, and it shut off. But, it starts back up again after a while.
The whole system is so simple, I know, but I am scratching my head as to where to look. The sensors? I could do resistance checks but that seems to be a failproof part. The relay? Such a simple device. The actual board going bad on the GL-235 perhaps? I don't know how to diagnose that.
Any help would be appreciated!