Work Performed: Inspected Navien tankless combi boiler showing error code 777, indicating low-water cut-off activation Observed low-water cut-off flashing red; reset the boiler by unplugging it — system restarted successfully Monitored boiler operation and verified adequate water level Performed full visual inspection — no signs of internal damage or water intrusion at this time Verified system pressures, temperatures, and thermostat operation — all within normal range Customer Notes: Customer mentioned a recent dishwasher leak, which may have contributed to low-water cut-off trigger Offered boiler maintenance and flush — customer prefers to schedule this for the fall, including flushing and bleeding the radiators Also discussed maintenance for existing ductless system to be done in the fall