i52
AEG
Drain Pump Triac Fault
Dishwasher displays i52 and may not drain correctly; wash cycle may abort.
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Shorted drain pump motor, Damaged wiring to drain pump, Burnt triac controlling drain pump on AEG main PCB
How to Fix / Troubleshooting
Safety first: Disconnect mains power before working under the dishwasher.
- Check for obstructions: Remove filters and inspect the drain pump area for debris. A jammed pump can cause overcurrent and damage the triac.
- Observe drain behavior: Start a cycle and then cancel it to trigger draining. If you hear no pump noise and water remains, suspect the pump or control board.
- Inspect pump and wiring: Access the drain pump from the bottom. Check for burnt smell, discoloration, or melted plastic. Ensure the connector is firmly seated and wires are intact.
- Test and replace pump: Measure the pump coil resistance; if open or very low, replace the drain pump.
- Control board replacement: If a known-good pump does not restore operation, the main PCB triac is likely faulty and the board must be replaced by a qualified technician.
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Repair Difficulty
Professional Required
5/5
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