I am a homeowner seeking some advice.

I have an FTXS series Daikin Inverter Room Air conditioner, with less than three months usage (but probably installed about six months ago) It blew the circuit breakers, failed to come on and now shorts out the electricity entirely if switched on. The technician tells me the compressor motor has burned out, but doesn't know what has caused it.

Could the burnout have been caused by a screw being drilled into the wall near the indoor unit and possibly too close to the cable going from the unit to the compressor. I can detect a wire behind the drywall about 4 inches from the screw but not directly behind or next to it.

If so, would the burnout happen immediately or after a period of time?

The compressor is on the roof with a lot of others which all seem to be fine.

Thanks
Homeowner17