Hi, I have a sundance cameo 880. Before I often had the code COOL so i put hot water and when the temperature get up, everything went allright. Last week, the same thing happend but the code ---- appered. Everything shut down and nothing start under 80. I reset the breaker 2 or 3 times and nothing happend. I suspect the hi-limit switch or the temperature sensor. Does anybody have a clue on what it can be? Thanks for the answer!