I have my sump stand light wired to the SLX switch A port. All was working well, for the last 10 months or so, with the light switching on when the doors opened and turning off when the doors closed. This morning when checked on the tank I noticed the lights on with the doors closed. I went into the RKL controller, and was able get things working again, but an hour later, doors closed lights on again. Evidently something is about to fail completely. Anyone else have this problem before? Just trying to narrow things down because I don't have extra modules on hand to switch out. I'm figuring between the SLX module pc4 or maybe the the light's power adapter?