I found an owner's manual on jandy.com that contained a Professional Maintenance and Service section for my heater model. (It's actually the same manual, but contains one additional section for Professional's) After removing the top of the heater as the manual instructed, I located the Exhaust Temperature Limit Switch. The switch has a very small red button in the center. All that was required was to push the red button on the switch to reset the circuit. Everything is as good as new. There must have been some debris in the exhaust vent which caused the circuit to trip. Manual states that the switch trips at 305 degrees.

Hope this helps if anyone else has the same problem.