It's possible that this has come up before but here's the scenario. Bought a used RLK with PB4 on here a few weeks ago. It arrived and looked to be in great condition. I finally got my quarantine tank set up and was ready to program my heater, chiller, etc. The problem is I can't change any of the users previous settings. I was able to change the clock and the status light in the PB4 is green. I tried a factory reset that appeared to go through but all the settings remained and I still can't change them. Whenever I got to the module setting and select the PB4 to change things the blue light on #1 of the control panel flashes blue. I make my changes, select "save" and then go back to the main menu only to find out NOTHING CHANGED. Please don't suggest I change to an Apex or another system. This is a standby quarantine tank and I don't plan to dump a bunch of cash into a controller for it. I have been using RKLs on my main tank for years and have had no issues what so ever. I'm familiar with the system in general as far as programing etc but this one has me stumped.
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