Dishwasher shows E7; wash pump does not run or stops shortly after starting

Safety first: Disconnect power and ensure the machine is drained before working under the unit.

• 1. Listen for pump behavior: When a cycle starts, note whether the pump hums, runs briefly, or is completely silent. This helps distinguish between mechanical blockage and electrical failure.
• 2. Inspect sump and filters: Remove tank filters and check the sump area for broken glass, cutlery, or other debris that could block the circulation pump inlet.
• 3. Access wash pump: Remove the lower front panel or side panel to reach the wash pump assembly. Check for leaks or signs of overheating.
• 4. Manually rotate impeller: With power off, attempt to spin the pump impeller by hand (or with a tool if enclosed). If it is jammed, remove the pump housing and clear any obstruction.
• 5. Electrical tests: Measure motor winding resistance and, if present, test the start/run capacitor. Replace the pump motor or capacitor if readings are out of specification.
• When to call a technician: Circulation pump replacement often requires disassembly of plumbing and seals; professional service is recommended if you are not experienced with commercial dishwashers.