Machine fills and drains but wash arms do not rotate properly; E7 displayed indicating wash pump issue.

Safety first: Isolate power and allow the machine to cool. Water in the sump may still be hot.

• Check spray arm movement: Remove and clean the upper and lower wash arms. Ensure jets are not blocked with debris or limescale. Refit and confirm they spin freely.
• Inspect wash pump inlet: Remove tank filters and inspect the sump. Clear any debris that could restrict flow to the wash pump.
• Access wash pump assembly: From the front or side, locate the main circulation pump. Check for leaks around the pump seal and for signs of overheating.
• Test impeller and bearings: Disconnect power leads and attempt to turn the pump shaft or impeller by hand. It should rotate smoothly. If seized or very stiff, the pump must be replaced.
• Check start capacitor (if fitted): Many Classeq single‑phase pumps use an external run/start capacitor. Inspect for bulging or leakage. Test capacitance with a meter and replace if out of tolerance.
• Electrical tests: Measure motor winding resistance and compare with manufacturer data. An open winding or short to earth indicates a failed pump.