Came home to a hot house today. A/C blower running but condenser unit not. Smelled of burned electrical wire outside. Discovered in the non-fused disconnect box remnants of a wasp nest and one of the two wire to the unit completely severed from a small flash fire within the box. 40 AMP breaker was not thrown.
Bought a new breaker and a new disconnect and inspected everything - at condenser and main unit - before re-assembly. (After seeing the schematic, other than the signal wires to the condenser, I see now that the two are totally separate.)
It is all running now and appears to be cooling. (Unfortunately, unit is older than 15 years, so I know I am living on borrowed time.)
Could it be that the wasp nest shorted the condesner's capacitors? All fire evidence was on the load side of the wiring, not the supply side. Am I OK to keep my DIY fix?
Thanks, Danny Hindes dannyhindes at yahoo dot com