Can I fix Samsung code PC ER myself?

Start with these safe checks: Power the fridge off and unplug it for a few minutes, then plug it back in. If the doors were recently removed and reinstalled, make sure the door harness connectors were reconnected. If the code returns, request service.

When should I call a technician for code PC ER?

If the code returns, request service. Don't open the sealed refrigerant system, cut or braze lines, or add refrigerant. That needs an EPA-certified technician. Turn power off at the breaker or disconnect before opening any panel, and leave capacitors, compressors and control boards to a pro: they can hold a dangerous charge even with the power off.

Samsung Refrigerator Error Code PC ER / PC CH: Communication error

What PC ER means

There's a communication problem inside the refrigerator, usually after a power surge or if the doors' connections aren't seated properly.

Also shown as: PC CH, depending on the model.

Likely causes

Power surge
Door wiring not connected properly after removal

Safe first checks

Power the fridge off and unplug it for a few minutes, then plug it back in.
If the doors were recently removed and reinstalled, make sure the door harness connectors were reconnected.

When to stop

If the code returns, request service.

Checked against: Samsung UK: Fridge freezer display not working after a power cut (error codes). Codes can differ by model and year, so confirm with your owner's manual.