02/03/2026- I arrived on site and found an inverter not detected error on the thermostat. Upon inspection of the inverter I found the outdoor unit without any high voltage due to a tripped breaker. As I went to reset the breaker in the main breaker panel I noticed that the breaker was loose. I re-secured the breaker and turned it on and no issues occurred as the system started running properly. I tested all electrical equipment and found all to be in spec and I found no voltage shorts. I tested the unit multiple times and no issues occurred and the system was heating properly each time. Due to my findings I recommended for the customer to contact an electrician to verify that there are no issues in the main breaker panel and to contact us if any issues arise with the AC unit. This unit is currently working properly and heating at the time of service.