Samsung AQV12UGAX - DC-Link Voltage Under;Over Error - E466

4-24 Samsung Electronics
No
No
No
No
4-3-21 DC-Link Voltage under/over error When is displayed
1. Checklist :
1)Isthepower voltage normal?
2) Is the voltage o ront and back terminal o ndoor power relay normal?
3) Is the resistance value for DC Linkvoltage detection NORMAL?
4) Is the resistance value of DC Link discharge normal?
5) Is the appearance of DC Link Capacitor normal?
2.Troubleshooting procedure
Yes
Terminate the service.
Exchange the INDOOR PCB.
Exchange the OUTDOOR PCB.
Exchange the OUTDOOR PCB.
Yes
Yes
Yes
No
No
Yes
Terminate the service.
No
Yes
Yes
Yes
Restart after power o.
Is the DC Linkvoltage error occurred again?
Is the front and back terminalvoltage of
indoor/outdoor power relay normal?
Is the resistance for the
detection of DC Linkvoltage normal?
Exchange the reactor.
Is the appearance of
DC Link Capacitor normal?
Is the power voltage normal?
Reassembly the PCB.
Is the resistance value of
DC Link discharge normal?
Is the reactor insulation damaged?
Exchange the OUTDOOR PCB.
Exchange the OUTDOOR PCB.