Upon arrival I found a blown low voltage fuse. I replaced the fuse and cycled the system and it instantly trips when I power the Y circuit. Traced low-voltage short down to the wire that goes through the high pressure and low pressure cut out on the outdoor unit. The wire was not secured properly and was pinched in between the bracket on the condenser coil so had eventually rubbed through insulation causing it to short out each time the heat pump got a call to come on. I remove this wire and wrapped it with electrical tape and secured it to a different wire bundle. Cycled system. Everything is running on my departure.
