How to Fix Samsung Washer Error 3C

Error Code: 3C Difficulty: Hard

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

1. • 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.