Samsung Refrigerator PC ER — What It Means & How to Fix It
Also shown as PC CH on some models.
PC ER (shown as PC CH on older Samsungs) means the main control and display can't talk — try a full power reset.
What this code means
Samsung French-door refrigerators use PC ER (newer) / PC CH (older) for a communication fault between the main PCB and the panel/sub PCB. The link is monitored continuously; when it drops the unit flags PC ER/CH and may run poorly or stop responding.
Appears on Samsung French-door and side-by-side families with twin-PCB design (model sticker inside fresh-food section). The two displays mean the same fault, just different generations.
Most likely causes
| Cause | How likely | DIY-fixable? |
|---|---|---|
| Temporary power or control glitch | Very common | Yes — power reset, 60 sec |
| Loose harness between main and display PCB | Common | No — technician job |
| Corroded connector in door harness | Occasional | No — technician job |
| Failed display/sub PCB | Less common | No — technician job |
| Failed main PCB | Less common | No — technician job |
What you can try yourself
- Cut power at breaker for 60 seconds to reset both PCBs.
- Restore power and wait 2 minutes without pressing buttons.
- If PC ER/CH clears, monitor cooling for 24 hours.
- If it returns, note which compartment warms and any other code with it.
- Persistent fault needs harness and PCB checks.
When to call a technician
- PC ER/CH returns immediately after reset
- Display blank or flickering
- Both fresh-food and freezer warm while code is shown
Typical professional repair cost: PCB or harness repair for PC ER/CH typically runs $200—$500 including labor.
Frequently asked questions
Is PC ER the same as PC CH on Samsung?
Yes — same communication fault, different display generation. PC CH is the older C-suffix variant of PC ER. The reset and harness checks are identical.
How do I clear PC ER?
Full 60-second power reset. If it persists, the harness between boards or one of the boards is faulted.
Sources checked
Error meanings can vary by model. This guide was checked against the documentation above; use the manual for the model number on your own appliance when it differs.
Related Samsung codes
- Samsung Refrigerator 21E 21E is Samsung's freezer fan fault: the evaporator fan in the freezer section isn't turning, so cold air stops circulating — usually ice bridging over the fan, sometimes a worn fan motor.
- Samsung Refrigerator OF OF OF OF on a Samsung refrigerator is demo mode (or Cooling Off): the fridge is running as a showroom unit with cooling disabled. It's a setting — not a fault — and it exits with an 8-second button hold.
- Samsung Refrigerator 22E 22E is Samsung's fresh-food (fridge) fan fault, displayed as 22C on some models: the evaporator fan serving the refrigerator section has stopped, so the fresh-food compartment runs too warm.
- Samsung Refrigerator 5E 5E is Samsung's fridge defrost sensor error: the defrost sensor in the fresh-food (fridge) section isn't reporting a plausible temperature, so automatic defrost can't run properly and frost builds up over time.
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