Samsung ElectronicsNoNoNoNo12-2-16 DC Link Over voltage/ Low voltage error1. Checklist :1) Is the power voltage normal?2) Is the voltage of front and back terminal of indoor(outdoor) power relay normal?3) Is the resistance value for DC Link voltage detection NORMAL?4) Is the resistance value of DC Link discharge normal?5) Is the appearance of DC Link Capacitor normal?2. Troubleshooting procedureYesTerminate the service.Exchange the PCB.Exchange the PCB.Exchange the PCB.YesYesYesNoNoYesTerminate the service.NoYesYesYesRestart after power off.Is the DC Link voltage error occurred again?Is the front and back terminal voltage ofindoor/outdoor power relay normal?Is the resistance for thedetection of DC Link voltage normal?Exchange the reactor.Is the appearance ofDC Link Capacitor normal?Is the power voltage normal?Reassembly the PCB.Is the resistance value ofDC Link discharge normal?Is the reactor insulation damaged?Exchange the PCB.Exchange the PCB.Troubleshooting12-18
