Problem: The washer cannot detect the motor’s speed or position. This is usually caused by a failed Hall Sensor on the motor or a loose wire connection. The machine stops immediately to prevent damage.
How to Fix 3C Error
-
- UNPLUG the washer from electrical power and wait 5 minutes.
- Remove the rear access panel to expose the motor assembly and wiring harness.
- Inspect the motor harness connector at both ends for burn marks, corrosion, or bent pins. Clean contacts with electrical contact cleaner and a soft brush.
- Test motor windings resistance between terminals U-V, V-W, and W-U using a multimeter. All readings must be equal (typically 2-5Ω). Uneven readings indicate motor failure.
- Test the hall sensor resistance within the motor assembly per service manual specifications (typically
- 5-
- 5kΩ between designated pins).
- Verify ground continuity at motor mounting bolts—ensure tight connection to chassis.
- If motor tests faulty, replace entire motor assembly using OEM part DC34-00030A: remove drive belt, stator mounting bolts, and rotor assembly. Install new motor, reattach belt with proper tension, and reconnect all wiring.
- Reassemble panels and run diagnostic test cycle to verify operation.
Still Not Working?
If the replacement part didn’t fix the issue, you may have a wiring problem or main board failure.
Browse all Samsung error codes: Samsung Error Codes
Best Value Replacement Washers
If your current unit is repeatedly failing, replacing it may save money versus another major repair.
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