Samsung Ecobubble UC and dC error fixed

Thanks for coming back with the fix — that’s genuinely useful, and it makes technical sense even though the fault code was misleading.

On some Samsung washers, a poor connection elsewhere in the circuit can cause odd behaviour and completely inaccurate fault indications. A loose drain pump connection could certainly upset the control board enough to throw UC/power-related faults and then refuse to start with a dC/door error.

For anyone else with similar symptoms on a Samsung, the sensible checks would be:

1. Isolate the appliance from the mains before removing any panels or touching wiring.

2. Check the drain pump connections closely Look for loose spade terminals, heat damage, discolouration, melted plastic, or signs of arcing. If the connectors are slack, they should really be tightened or replaced rather than just pushed back on repeatedly.

3. Inspect the pump itself Check the pump coil resistance, impeller condition, and whether there’s any water ingress onto the terminals.

4. Check the wiring loom Especially from pump to main PCB and from door lock to PCB. Tug gently on each connector and look for broken conductors near plugs.

5. Inspect the PCB carefully Any browned areas, dry joints, or overheated components are worth noting, particularly around relay and pump-drive areas.

6. Don’t assume the error code is the failed part As your case shows, a dC error did not mean the door interlock was actually at fault.

A very helpful update, and it may save others from replacing good parts unnecessarily. If any wiring or 240V connectors are heat-damaged, I’d strongly recommend proper repair by a qualified engineer.

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