Dishwasher Not Cleaning Dishes, (Spray Arms Do Not Rotate)

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

1. Check 1

   Turn the dishwasher off before touching anything. Remove or pull out the racks as the manual permits and rotate each spray arm by hand through a full revolution. Check for tall utensils, cutting boards, pans, hanging items, a rack, or a door-mounted item that intersects the arm.

   Expected result: An arm hits a dish or rack; only one arm is blocked; every arm turns freely; or an arm is loose, cracked, warped, or rubbing its support.

   Next step: Rearrange the load for clearance and recheck hand rotation. If all arms were free or a damaged arm remains, continue with the cool, model-approved cleaning and filter checks without running the unit open.

   Stop if: Do not reach into a running dishwasher, force an arm past resistance, bend a rack, or continue if glass, sharp debris, a cracked arm, or water is present where it should not be.

   Why this matters

   Why: A physical obstruction can stop an arm and leave the obstructed rack dirty. A free arm with poor cleaning keeps water delivery, nozzle, filter, feed-tube, cycle, and pump causes in consideration. A damaged or loose arm cannot be diagnosed by loading changes alone.

2. Check 2

   With the dishwasher off and cool, remove only the spray arm and filter parts that the exact owner's manual identifies as user-removable. Rinse visible arm openings and the filter using the manual's method; use a soft tool for nozzle debris only if the manufacturer permits it, and do not push debris into the arm.

   Expected result: Nozzle holes or the filter are clogged; the arm is clean but still has resistance; the filter is missing, damaged, or not seated; or the parts are clean and the arm turns freely.

   Next step: Reinstall every part exactly as the manual shows and verify free rotation by hand. If cleaning does not restore wash action, stop disassembling and arrange service rather than reaching into the sump or pump.

   Stop if: Do not remove a sealed pump cover, use a knife or wire to enlarge holes, use harsh chemicals not approved by the manual, or operate with a missing filter or loose spray arm.

   Why this matters

   Why: Clogged nozzles or a filter restriction can reduce circulation and cleaning. A filter that is missing or incorrectly seated can allow debris into the circulation path. Clean, freely turning parts make obstruction less likely and shift attention to water fill, the feed path, wash pump, or control.

3. Check 3

   Check the selected cycle and the owner's manual for which racks and spray arms it uses. Load soiled faces toward the spray paths, leave space between items, and make sure the detergent dispenser and upper-arm docking or feed path are not blocked by a dish or rack position.

   Expected result: A rack-only or specialized cycle was selected; one rack is dirty while another cleans; the upper arm is not aligned with its feed connection; or all racks remain dirty on a normal full-wash cycle.

   Next step: Use a suitable cycle and correct the rack or feed alignment only as the manual permits, then recheck cleaning. If the arms remain still or all sections remain dirty, continue to the fill and service boundary rather than repeatedly running cycles.

   Stop if: Do not force the rack, remove a feed tube from a running unit, or open the door during operation to reach a moving or pressurized spray arm.

   Why this matters

   Why: A rack-only cycle can intentionally leave another arm inactive, and a blocked docking path can deprive an upper arm of water. Dirty dishes throughout a normal cycle are less consistent with loading alone and keep fill, circulation, filter, or pump issues in consideration.

4. Check 4

   Using only the exact model's normal operating guidance, note whether the dishwasher completes its fill, wash, drain, and heat stages and whether the sound is a normal spray-and-circulation sound, a repeated hum, a grinding noise, or silence during the wash portion. Do not remove panels or place hands in the tub during a cycle.

   Expected result: The tub appears not to fill, there is little or no wash-spray sound, a pump hums without circulation, the unit drains but never washes, or the cycle operates normally but dishes remain dirty.

   Next step: Keep the dishwasher off when fill or circulation is abnormal and arrange qualified appliance service. If the cycle sounds normal, repeat only after safe loading and cleaning checks; persistent poor cleaning still needs model-specific diagnosis.

   Stop if: Stop for leaking water, a burning odor, smoke, repeated breaker trips, exposed wiring, a grinding or seized-pump sound, or a tub that fails to fill or drain as expected.

   Why this matters

   Why: A low fill condition can leave a lower or middle arm still and points toward water supply, inlet, float, or control diagnosis. A hum without spray or a grinding sound keeps the circulation pump or trapped debris in consideration. Normal wash sound with dirty dishes shifts attention toward loading, detergent, temperature, nozzles, filter, or a particular arm's feed path.

5. Check 5

   Record the dishwasher model, cycle, affected rack, hand-rotation result for each arm, filter and nozzle condition, loading changes, fill and drain behavior, and any unusual sound or error indication. Photograph only visible parts and labels without removing panels.

   Expected result: One arm remains still after safe cleaning; every arm remains still; the issue began after a filter, rack, or spray-arm change; or the problem persists on a normal cycle with clear loading and clean parts.

   Next step: Arrange qualified appliance service and provide the model, observations, cycle behavior, and photos. Use the exact owner's manual and parts diagram for any model-specific part identification.

   Stop if: Do not remove the door, kickplate, pump cover, inlet valve, wiring, or control panel, and do not test live voltage or run the dishwasher with a damaged or missing spray arm or filter.

   Why this matters

   Why: The record helps separate a local arm or feed problem from a system-wide fill or circulation fault and prevents ordering a pump or arm from a symptom alone. A persistent system-wide failure requires internal electrical, inlet, pump, or control diagnosis.