I was doing a service call via phone on a Coleman 706 today. The spa has the ability to lock certain things on the control panel like just the temp, or the whole panel to ensure filter settings and such don't get messed with.
My customer had a slue of grandkids visiting so she decided to lock the temp setting at a 100. Well it's been 100 outside for days and thats just two hot. She read her manual and couldn't get the control panel to unlock.
Not really wanting leave airconditioning at the store, I suggested flipping the breaker off for several hours so the control would default to factory settings. This didn't work and not only did it not default, it held the time of day, and the filter settings.
I called Coleman and found out that the control panel on the 700 series spas will hold the program for 48 days. Thats great for the customer because they don't have to reprogram after water changes, service, or if they drain and go south for a few months. But now I have to leave this nice cool store and play with a control panel...