Performed 1 system heating diagnostics on an out of warranty carrier heat pump/ air handler. I found that someone had disconnected the compressor plug for the outdoor unit. I replugged in the compressor and the breaker tripped. The home had stated that the unit had been diagnosed with issues at the end of last summer. I checked the contactor and capacitor and verified that they were ok. I checked the breaker sizes. I inspected the air handler in the crawlspace and found that the evaporator coil was clogged with hair and it looks like the TXV bulb was potentially damaged during the installation of the system. I gave the homeowner pricing for the repair and emailed him an estimate. The homeowner discussed it with his wife and they would like an estimate to replace the system.