@Carol - that is what happened, the A/C unit itself was damaged a couple of weeks back. What often happens is a "brown out" where the supply voltage drops (e.g. only 90V instead of the 110V expected). Since the devices want to draw the same amount of power, the system supplies more amperes to make up for the difference. And Ohm's law (Voltage = current * resistance) comes into play and suddenly the wiring in the devices that is limited to a certain number of amps carries a lot more than it was designed for and starts to heat up. Brown outs can cause fires and equipment failure.

[Linked Image]