Since having melted connections at the transfer switch and at the outside shore power receptacle recently, I decided to check all the connections in the converter and HW heater. The main incoming power lugs in the converter were tight, but was able to make 1/2 to 3/4 turn on some other lugs. Also checked connection on HW heater, tightening wire nuts and taping. I can sleep better knowing the smoke alarm has less chance of going off.