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.
Samsung Washer 3C Checks Before Replacing Parts
- Restart the washer and confirm the 3C message returns under the same condition instead of after a one-time interruption.
- Check the simple causes first: load balance, water supply, drain flow, door or lid closure, visible leaks, and power stability.
- Inspect accessible wiring connectors and moisture-prone areas before assuming the control board has failed.
- Use the complete Samsung washer model number from the door, lid, or rear tag before matching any pump, valve, sensor, suspension, lock, or board category.
- If the 3C code points to a specific system, test that system directly before ordering replacement parts.
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
When It’s Better to Replace Than Repair
Sometimes replacing an appliance makes more financial sense than putting more money into repairs.
Here are a few signs it may be time to shop for a new one:
For repair parts, verify exact fit with the full washer model number before buying; these links are general replacement-appliance shopping options.
- ✓Appliance over 8-10 years old
- ✓Repair cost over 50% of replacement
- ✓Multiple recent breakdowns
- ✓Major component failure
Recommended Replacement Options
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Still Not Working?
If the Samsung washer 3C error returns after the basic checks, stop and recheck the full model number, the exact symptom, wiring, sensors, water or drain path, and visible component condition before buying another part.
More options (for a better recommendation)
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📖 View All Error CodesExpert: Mike Sullivan
EPA Section 608 Certified Technician with 18+ years experience.
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