Window AC LBT Not Working

About This Service

When the window AC LBT (low voltage transformer) is not working, the unit may not power on, respond to controls, or operate the blower, sensors, and compressor correctly. This issue is often caused by voltage fluctuations, transformer burnout, short circuits, or PCB-related damage. Our technicians inspect the LBT output, check associated circuits and wiring, and identify whether repair or replacement is required. We restore stable low-voltage supply to ensure smooth control functions and reliable AC operation.