17OCT2021 Jason B Arrived for no heat, spoke with Dale about the systems history and performance. This is a Heat-pump air handler. Cycled system on at thermostat, then verified proper function at Condenser. Inspected air handler. Found 3amp fuse blown. Disconnected power at air handler. Replaced fuse. Found main power loose inside AH breakers. Tightened breakers and cycled system on. Checked all amps. System is running properly at this time.