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Dishwasher leaves standing water in the tub after the cycle; the drain pump motor is clogged, damaged, or has lost continuity and can no longer force water through the drain hose.
A loud grinding, humming, or buzzing sound during the drain phase indicates a seized impeller or worn pump motor bearings — replace the full assembly to restore quiet operation.
The control board detects residual water from a previous cycle (caused by a failing pump) and locks out the start of the next wash cycle as a safety measure.
A cracked pump housing or deteriorated shaft seal allows water to escape underneath the dishwasher; replacing the complete pump assembly with a new seal eliminates the leak source.
💡 Pro Tip: How to Confirm Your Drain Pump Has Failed
Your part is likely the culprit if you notice any of the following:
⚠️ Water remains standing at the bottom of the tub after the cycle ends
⚠️ Loud grinding, buzzing, or humming noise coming from the pump area during drain phase
⚠️ Dishwasher refuses to start a new cycle because it detects leftover water from the previous cycle
⚠️ Error code related to drainage displayed on the control panel
🔬 Technician's Tip: Set your multimeter to continuity mode and probe the pump motor terminals. No continuity = confirmed pump failure. Remember — drain pumps are not repairable; if defective, always replace the full assembly.
📦 What's in the Box
✅ 1× Dishwasher Drain Pump Assembly A00126401 (120V / 60Hz / 0.8A / 35W — includes impeller and seal)
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Disclaimer: Compatibility information, part numbers, and model fitment data on this page are sourced from manufacturer databases and third-party references. While we strive for accuracy, please verify your appliance model number before ordering. Heima is not responsible for errors or omissions in compatibility listings.
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