Samsung · Washing Machine
Samsung Washing Machine AE Error Code
Communication fault between PCBs
What this error means
AE (AC6, ACb variants) is a Communication Error between Samsung's main control and a sub-board—display, inverter, or Wi-Fi module. Cycles may freeze mid-step or refuse to start until the link restores.
How AE is detected
When AE appears on a Samsung washing machine, the control board has confirmed that water did not leave the machine within the programmed drain window. On Samsung WF50K7500AV, Samsung WA52M7750AW, and similar variants, the drain pump runs for a fixed interval—often three to seven minutes on washers and dishwashers—while a pressure switch or turbidity sensor verifies the tub or sump is empty. If water remains, the cycle stops to prevent spin with a full tub or overflow on the next fill.
Most AE calls are resolved without parts: unplug for 60 seconds—avoid extension cords and shared circuits with microwaves. Restricted drain paths mimic pump failure because the impeller spins against a blocked hose or filter. Document whether the pump hums audibly during the drain step; a humming pump with no water movement points to a clogged filter or kinked hose, while silence may indicate a failed pump motor or loose wiring at the harness.
After clearing blockages, run a short cycle and listen at the drain hose for steady water flow. If AE returns on the next load with a clean filter and straight hose, measure resistance at the pump motor connector per the service manual for your model before ordering a replacement pump assembly.
Common causes
- Loose ribbon cable after moving the washer
- Moisture on board connectors following a leak repair
- Power surge damaging UART lines on the main PCB
- Failed sub-board after lightning or brownout
Step-by-step fixes
- 1Unplug for 60 seconds—avoid extension cords and shared circuits with microwaves
- 2Ensure the washer sits on a grounded outlet, not a surge strip rated below appliance load
- 3Note whether AE appears at power-on or randomly mid-cycle for the technician
- 4Dry the control area thoroughly if AE followed an LE or overflow event
When to call a technician
AE every startup after reset typically requires main or sub PCB replacement with model-matched parts.
Affected models
- Samsung WF50K7500AV
- Samsung WA52M7750AW
- Samsung WF45R6300AV
Prevention & maintenance
- Clean drain filters and hose terminations monthly on high-use washing machines to prevent AE from lint and food debris buildup.
- Record when AE appears in the cycle and whether it clears after a 60-second power reset on your Samsung washing machine—that detail speeds diagnosis if you call service.
- Keep the model and serial number from the rating plate when ordering parts for AE; Samsung uses multiple revisions with different harness lengths and board firmware.
- Photograph wiring connector orientation before disconnecting any component while troubleshooting AE; reversed plugs on pumps and valves cause immediate repeat faults.