I found the service disconnect melted with burned and melt wires. At some point someone bypassed a fuse and the disconnect bypassing the safety of the disconnect. The disconnect will have to be replaced with new fuse and the high voltage wire must be repaired or replaced. I have the service disconnect in the off position (it will still send 120volts into the unit) and I have the breaker for the roof top unit off. The breaker must be left off until repairs are correctly made and the safety is restored to the high voltage circuit. I’m working on an estimate and will send it over ASAP. Customer said to speak with the builder owner “sam”. She called sam and I tried explaining this was not an issue prior to replacement and has since failed. It was not on the estimate to replace the disconnect at the time because it still was good.