Gonna leave this here in case someone needs it in the future. Had to switch my main breaker off to do some unrelated work, and when I switched it back on, my indoor pool controller was frozen with all lights on. Resolution:
page 12:
page 12:
2. The microprocessor was hit by a power surge. Turn off all power to the system. (If the PCB is prior to Revision N, disconnect the nine (9) volt battery.) Wait two (2) minutes and then turn the power on. If this frees up the system, you will need to reset the time and date, except with a Revision N board. Programming will not be lost. It is advisable to install a Surge Protection Kit.