The ER error on your Samsung Washer means the control board has detected a fault it cannot identify through its normal error codes, often linked to a communication breakdown between the main control board and other parts of the machine. This is sometimes shown on Samsung freezer displays as a related “PC ER” style code, and it points to the same underlying issue: the control system isn’t getting the signals it expects. A power cycle often clears it, but repeated appearances usually point to a wiring or board problem.

Error code ER
Meaning General control board fault or communication error between components
Severity Medium — the appliance may stop mid-cycle but is not usually dangerous
Time to fix 10–45 minutes
Tools needed None, or a multimeter for advanced checks

What the ER error means

Samsung washers use a range of two-letter codes to flag specific faults, and ER is the code used when the control board picks up on an issue it can’t map to a more specific fault like a motor, sensor, or drain problem. It’s essentially a catch-all warning that something in the electronics or wiring isn’t communicating correctly. This same logic applies to other Samsung appliances, including freezers, which is why you may see a similar “PC ER” reading show up on a freezer display when its own control board loses track of a connected part.

In most cases the error appears because of a temporary glitch, a loose connector, or a power supply issue rather than a fully failed part. That said, if it returns after a reset, it’s worth investigating further before it leads to a bigger repair.

Common causes

  • Temporary software glitch in the main control board
  • Loose or corroded wiring connector between the control board and a sensor or motor
  • Power surge or unstable mains supply affecting the electronics
  • A failing main control board that can no longer process signals correctly
  • Interference from a nearby faulty component sending incorrect signals
  • Moisture or condensation reaching the control board wiring

How to fix the ER error

  1. Power cycle the washer — Unplug it for 5 minutes, or switch off at the wall socket, then plug it back in and start a new cycle. This clears most temporary glitches.
  2. Check the power supply — Make sure the washer is plugged into a stable outlet, not a shared extension lead that could cause voltage drops.
  3. Inspect accessible wiring connectors — With the machine unplugged, check any connectors you can safely reach at the back or underside for looseness, corrosion, or moisture damage.
  4. Run a short test cycle — After resetting, run a quick rinse or spin cycle to see if the error returns immediately or after a delay, which helps narrow down whether it’s a one-off or a recurring fault.
  5. Check for related error codes — If the ER error is followed by another code, look it up specifically; issues like the Samsung Washer SE Error Code: Causes and Fixes or Samsung Washer DE Error Code: Causes and Fixes can sometimes appear alongside a general control fault.
  6. Call a qualified technician — If the error keeps returning after resets and wiring checks, the main control board likely needs professional testing or replacement.

FAQ

Can I fix the ER error myself?
A. In many cases yes — a power cycle and a check of accessible wiring connectors resolves it. If it keeps returning, the fix usually needs a technician to test or replace the control board.

Is the ER error the same on Samsung freezers?
A. It’s similar in principle. Samsung freezers use a related “PC ER” style code to flag the same kind of control board communication fault, though the exact causes and fixes differ slightly by appliance type.

Is it safe to keep using the washer with an ER error?
A. If the washer completes a test cycle without issue, it’s generally fine to use short-term. But if the error appears mid-cycle repeatedly, stop using it until it’s checked, since it may indicate a worsening electrical fault.