Samsung combi dryer/washer motor ( EC2) code.

Hello,

If you’ve now proved the original and replacement motors will all run, the fault is much more likely to be in the motor drive circuit, wiring, or feedback side rather than the motor itself. I wouldn’t rely too much on LED flash rates alone unless you have Samsung service data for that exact model.

Before checking anything internal, isolate the appliance from the mains.

1. Check the motor wiring loom carefully Follow the loom from motor to the inverter/control board and main PCB. Look for broken wires, overheated plugs, loose pins, or corrosion. On washer dryers, vibration can fracture conductors near the motor plug or where the loom is tied to the tub.

2. Inspect the motor connector and board plugs Even if they look connected, remove and refit each plug. A poor connection on the motor windings or tacho/Hall feedback can bring up a motor fault very quickly.

3. Check the feedback circuit These machines need to “see” motor speed/position feedback almost immediately. If the Hall sensor/tacho wiring is open circuit, shorted, or not reaching the board, the machine can flag a motor error even with a good motor fitted.

4. Examine the drive board/inverter area Look for burnt tracks, damaged solder joints, failed relays (if fitted), or blown power components. If a replacement board failed again after 3 weeks, something external may be stressing it.

5. Check for drum drag or wiring damage under load Make sure the drum turns freely by hand and nothing is mechanically jamming the drive system.

If wiring and feedback test good, I’d strongly suspect the motor control board/inverter stage or the main PCB not commanding it correctly. For live electrical testing or board-level diagnosis, best to use a qualified appliance engineer.

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