Why Is My Dishwasher Making A Grinding Noise?

How to Fix It

Remove obstructions from the spray arms by poking out debris with a toothpick or thin wire. To reduce mineral deposits, try a vinegar cycle or install a water filter.

2. Blocked Pump

Sometimes leftover food scraps or tiny utensils can become stuck in the pump or chopping mechanism, causing a disturbing grinding sound.

How to Fix It

Check the bottom of the dishwasher for any foreign objects and carefully remove anything that doesn’t belong.

3. Plugged Inlet Valve

A blocked water inlet valve can create grinding sounds in a dishwasher. This problem often occurs in areas with hard water, where mineral buildup slows water flow and impacts operation.

How to Fix It

To fix a blocked inlet valve, disconnect the hose, clean out any sediment filter, and remove any trapped debris or mineral buildup.

4. Blocked Chopper Blade

The chopper blade, found at the base of the dishwasher, grinds up food scraps to keep the drain flowing. Appliance SD Repair. If blocked by debris, utensils, or broken fragments, it can fail to rotate smoothly and produce a grinding sound.

How to Fix It

Remove any debris from the chopper blade to see if that fixes the issue before deciding to replace it.

5. Faulty Motor Bearings

If water reaches the motor bearing, it can cause rust and produce a grinding sound. Some dishwashers, however, have sealed bearings that don’t need lubrication, which helps prevent water-related damage.

How to Fix It

Prevent rust on motor bearings by following the manufacturer’s lubrication instructions. If corrosion is extensive, the bearings might need to be replaced.

6. Worn-Out Pump Assembly

Dishwashers have both a drain pump and a circulation pump. Damage or blockages in either one can cause a noticeable grinding noise.

How to Fix It

Check the pump for any trapped debris and clear it to determine if that fixes the problem. If the pump shows damage, it will need to be replaced.

7. Loose Dishes

Improperly positioned dishes may move around during washing, causing a loud grinding noise. Fortunately, this is an easy problem to fix.

How to Fix It

To fix this, arrange dishes properly according to the manual and ensure no items are loose on the bottom rack.

When to Call a Pro

If the grinding sound continues despite attempting these fixes, it may be necessary to contact a professional Appliance SD Repair technician to inspect or service your dishwasher.

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Services that we provide

Refrigerator repair, Freezer repair, Ice-maker repair, Wine-cooler repair, Washer repair, Dryer repair, Dishwasher repair, Stove repair, Oven repair, Range repair