Performed diagnostic found system off, not working, tested electrical all ok, then tested system, system caught fire. System is off need new motor. Looking for replacement motor will call tomorrow with more info. Replaced motor, then found system not working, still has possible small water leak inside unit. But isn’t leaking right now. Found hot water pump not wired up, so rewired the pump and tested system. System on and working right now. Tested system multiple times.