Dishwasher Fills and Drains but Does Not Wash: Safe Checks Before Service

Use only checks that match the exact appliance or system and its official guide.

1. Check 1

   Run the normal wash cycle with the dishwasher empty of loose objects and observe from outside during the portion after filling. Note whether you hear or see the normal spray/circulation action, whether the machine immediately drains, and whether any leak indicator or water appears on the floor. Do not reach into a running tub.

   Expected result: There is clear spray/circulation, there is only fill-and-drain with no spray sound, or the machine drains while a leak indication or external water is present.

   Next step: If water is outside the appliance or a leak indication is present, stop the cycle, close the water supply if accessible and arrange service. If there is no spray action but no leak, continue only with the power-off external checks below; do not open the pump or control area.

   Why this matters

   Why: Spray/circulation means the problem may be cleaning performance rather than a total absence of wash action. Fill followed by drain with no wash action does not identify the pump; a leak-detection system can also cause a dishwasher to drain after detecting a leak.

2. Check 2

   With the cycle stopped and the appliance safe to open, check the selected cycle and the visible loading around the spray arms. Make sure a top-rack-only option was not selected when lower-rack washing is expected, and move only dishes or utensils that visibly block an arm or detergent dispenser.

   Expected result: A top-rack-only cycle was selected, an item prevents an arm from turning, or nothing in the load obstructs the spray pattern.

   Next step: Select a cycle appropriate for the full load and rearrange the obstruction, then make one controlled test. If the correct cycle and clear load still produce no wash action, proceed to the spray-arm and filter checks rather than guessing a motor or pump part.

   Why this matters

   Why: The official spray-arm guidance says a top-rack-only cycle does not engage lower spray arms, and loading that prevents an arm from turning can leave dishes unwashed. A clear load means the symptom is not explained by loading alone.

3. Check 3

   Before starting another cycle, gently spin each accessible spray arm by hand and confirm that it moves freely without striking a rack or dish. Do not use a tool, force an arm past resistance or disassemble the arm on an unspecified model.

   Expected result: An arm is blocked or resists rotation, or all accessible arms turn freely.

   Next step: Rearrange the load and retest if an obstruction was found. If the arms turn freely but the appliance still fills and drains with no spray action, stop at the external checks and schedule service.

   Why this matters

   Why: A blocked arm can delay detergent release and soil removal; the manufacturer guidance treats resistance after loading as a reason to rearrange the dishes. Free movement rules out only this visible obstruction and does not prove that internal circulation is working.

4. Check 4

   Turn the dishwasher off before accessing a removable filter or foreign-object cup that the exact model identifies at the tub bottom. Inspect for food or mineral buildup, rinse the filter as the model guide directs, and reinstall every filter and lock before operating the appliance.

   Expected result: The filter or cup is visibly blocked, or it is clean and correctly locked but the wash stage still has no spray action.

   Next step: Clean and securely reinstall a blocked filter, then run one controlled test. If the filter is clear or the no-wash symptom remains, do not remove the pump, motor or wiring; provide the exact model, cycle and observation to qualified service.

   Why this matters

   Why: Manufacturer guidance links filter maintenance with strong water flow and cleaning performance, but a clean filter does not establish a failed or healthy circulation pump. Operating without the filters properly installed can damage the appliance.