PC ER
Samsung Door and Main PCB Communication Error

Display shows PC ER; refrigerator may not respond to door opening or panel inputs correctly.

Advertisements

Safety Warning

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

Advertisements

Possible Causes

Damaged door wire harness (often at hinge), Loose connector at main PCB, Pinched or broken wires in door, Main PCB communication fault

How to Fix / Troubleshooting

Safety first: Unplug the refrigerator before inspecting wiring.

Step 1 – Inspect door hinges and harness:

  • Open the top hinge cover on the affected door (usually the right door).
  • Locate the door wire harness and check for pinched, cut, or corroded wires.
  • Ensure the harness connector is fully seated.

Step 2 – Check harness continuity (advanced):

  • With the unit unplugged, disconnect the harness at both ends (door and cabinet).
  • Use a multimeter to check continuity on each wire.
  • If any wire is open, replace the Door Wire Harness.

Step 3 – Inspect main PCB connections:

  • Remove the rear access cover and locate the Main PCB.
  • Verify that all connectors related to door communication are secure.

Note: If wiring is intact and PC ER persists, the Main PCB or door control board may be faulty and should be replaced by a technician.

Advertisements

Repair Difficulty

Hard 4/5

Required Part

Door Wire Harness
Check Price on Amazon

We may earn a commission from links on this page.

Advertisements