I went out to test the water on my 2007 Sundance Optima and noticed a clear screen, except for a series of dashes (-----). According to the owners manual, this is the watchdog mode. If it senses something wrong, it will shut down and go into this watchdog mode. I turned off the breaker to the tub for a couple of minutes, then turned it back on. This seems to have cleared up whatever went wrong...for now. But, this has spawned a couple of questions:
1. Any idea what could have caused this?
2. Is this a sign of more trouble ahead?