I've only had my hot tub for a couple months but have suddenly started having a strange problem with it over the last 7-10 days. I'll come home from work and the Sundance logo on the front will be red. Opening up the cover reveals the display simply saying '---'. If I kill the power at the outdoor box, wait about a minute, then turn it back on, the hot tub boots up normally (and doesn't seem to have gotten any cooler--temp still at 104*). This then happens again a day or two later.
Any advice?