Hi, I just moved into a house with an indoor older hot tub. I’ve had it running for a few days now, on startup everything fired up well. Water came up to temp, got it set at 102, and pump was running. On maybe the 3rd day of running I woke up to everything shut off; the display, pump and heater. The breaker was NOT tripped. The only way to get everything going again is by flipping the breaker off then on. Then everything fires up and water starts coming back up to temp set point. Just wanting to get some ideas of what the issue may be. Thanks!