I was recently given a 2000 Cal Spa Jacuzzi (not sure of a specific model)by a friend (it worked fine last time he turned it off). It has a panel on top that says GE electric, and the board says Balboa Instruments 2100 wiring system. There was a rat that got under it and chewed two or three of the small wires, which I have fixed. I filled the tub, the jets work, the blower works (on the option button), and the lights work fine. There is a little green light on the panel for suction safety mode which light up. But when I hit heat it starts at 100 and goes up to 104, blinks several times then goes back to 62 and blinks EC. Anyone have any idea what this could be? (The heat light indicator on the top panel is not lighting up either). Any help would be appreciated.