HVAC Replacing Faulty Disconnect RTU Job with Low Voltage Issues Voltage

I go back to replace the faulty 3 phase disconnect to prevent low voltage issues. One leg of power last time I was working on this unit wasn't receiving correct voltage. This the repair from No Ac Service Call RTU Faulty Disconnect Voltage Problems HVAC video

Видео HVAC Replacing Faulty Disconnect RTU Job with Low Voltage Issues Voltage канала The HVAC Hacker