Samsung's troubleshooting table for the DW80B7070 lists five noise causes. A sound when the dispenser cover opens and the drain pump runs in an early stage is normal operation. A dishwasher that is not level is noisy: ensure it is level. A foreign object such as a screw or plastic piece in the pump chamber needs a technician. A chopping sound means a nozzle is bumping against dishes: rearrange the dishes. Also a nozzle that will not rotate smoothly because a dish or pot blocks it: rotate the nozzles by hand after loading to check.
Differential
Likely causes of “Samsung dishwasher makes grinding, humming, knocking or squealing noises”, and how to tell them apart
- 1
A nozzle bumping against dishes
What separates it A chopping sound that repeats as the nozzle turns
How to confirm Rearrange the dishes so nothing touches the nozzle
- 2
The dishwasher is not level
What separates it Vibration or a thump that carries into the cabinet
How to confirm Ensure the dishwasher is level, and adjust the feet
- 3
Foreign material in the pump chamber
What separates it A grinding or rattling from the base during draining
How to confirm Contact a qualified service technician to remove it
- 4
Normal early-stage dispenser and drain pump sounds
What separates it A click and a hum as the cover opens at the start
How to confirm Samsung says this is normal operation, so no action is needed
Before you touch a setting
Record this first — changing settings destroys the evidence
- The phase of the cycle when the sound occurs
- Whether it stops when the racks are empty
Try in this order
0 of 5 completedMatch the sound
ReversibleA sound when the dispenser cover opens and the drain pump runs early in a cycle is normal. A chopping sound is a nozzle bumping dishes.
Rotate the nozzles by hand
ReversibleAfter loading, turn each nozzle by hand to check whether any dish or pot interferes with it. Rearrange the dishes.
Level the dishwasher
ReversibleEnsure the dishwasher is level; install it on an uncarpeted floor that can support its weight.
Clean the drain pump
ReversibleIf you hear an abnormal noise from the drain pump, remove the lower rack and the micro filter, take off the drain-pump cover by pushing its handle and lifting, check the impeller and remove foreign matter, then press the cover down until it clicks.
Stop if it grinds
ReversibleA screw or plastic piece in the pump chamber must be removed by a qualified service technician.
Model-specific
What is true of this model and not of its siblings
- Nozzle care
- To clean the upper nozzle, pull out the upper rack, turn the nozzle cap counterclockwise, remove and clean the nozzle, reinsert it, tighten the cap clockwise and check it rotates by hand. The lower nozzle pulls up out of the base and is pushed down until it clicks. Take care because nozzles may break when removed.
- Sanitize option
- Choosing Sanitize raises the final rinse to 163 F (73 C) for high-temperature sanitization; the Sanitize lamp blinks once the water passes 155 F (68 C) and stays lit until the option ends, and turns off when you open the door or press POWER. Samsung says the Normal cycle with Sanitize is NSF certified. Hi-Temp or a similar option raises the main wash temperature to help with tough baked-on food.
- Parts for this problem on the DW80B7070 (RepairClinic, 2026-09-21)
- circulation pump motor with heater unit, part number DD93-01013A, at $349.36; drain pump, part number DD31-00016A, at $155.28.
- Other models this page answers
- These steps also fit models DW80B6060, DW80R9950, DW80R7060, DW80M9550, DW80N3030, DW50T6060.
Stop boundary
When this stops being a self-service repair
- !If a grinding sound continues with empty racks, contact a qualified technician about foreign material in the pump chamber
- !If the sound comes with a code, use the information code table
Evidence ledger
Sources behind this answer
Samsung's own support page listing this model's manuals.
Samsung's own short user manual for these dishwashers to confirm the control-panel and code names.
Parts and list prices as shown on RepairClinic's parts search for this model number on 2026-09-21.
Exact questions
Common questions
Why does it chop?+
A nozzle is bumping against the dishes. Rearrange them.
Is a sound at the start normal?+
Yes. A sound when the dispenser cover opens and the drain pump operates early is normal.
What if it is not level?+
Ensure it is level; an unlevel dishwasher is noisier.
Can something in the pump make noise?+
Yes, a screw or plastic piece in the pump chamber; a technician must remove it.
How do I clean the drain pump?+
Remove the lower rack and micro filter, lift the drain-pump cover and clear any foreign matter.
Can I mute the beeps?+
Yes. In the settings menu choose Sound U0.
Does Auto Release Dry make noise?+
The door opens automatically before the cycle ends; the dishwasher cannot be closed for two minutes.
Is steam noise normal?+
After a cycle the door opens to let steam out, which is normal.