WARRANTY WORK: Upon arrival performed diagnostic to the heat pump system for heating operations, found the 2- year old unit not working due to electrical failures in the service disconnect and blown fuses . Replaced the 60a. Service disconnect box and 60a. fuses to the air handler in the basement, checked operations, found no other issues. Unit is working fine at this time. NOTE: While working on the HVAC system, noticed that the electric water heater has the cover to electrical elements removed. Very sure it’s something we didn’t do, cause it was like that upon arrival.