Issue-Specific Repair
Sub-Zero Dishwasher Knocking During Wash Cycle in Burlington & Woburn, MA
Is your Sub-Zero Dishwasher knocking during wash cycle? Local Burlington & Woburn technicians fix it fast — call (617) 812-1425.
MA Licensed & InsuredSame-day available90-day parts warrantyAll Greater Boston home types served
$120–$380
Typical cost
1–2 hours
Repair time
90-Day
Warranty
Mon–Sat 7am–8pm · Sun 9am–5pm
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1st Appointment
$15 OFF
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Return Customer
$20 OFF
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Veteran & Military
$20 OFF
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Senior (65+)
$20 OFF
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(617) 812-142550,000+
Repairs Done
90-Day
Parts Warranty
Same Day
Availability
Brands We Service
Certified Boston Repair Experts
Built for Greater Boston — Homes, Condos & More
ProFix Appliance Repair Boston specializes in local Sub-Zero Dishwasher repair in Burlington & Woburn, MA. A periodic knocking sound occurs during the wash cycle. Our neighborhood technicians carry the parts needed to fix it in a single visit and serve zip codes 01803, 01801, 01888.
Colonial & Ranch
Greater Boston's most common homes — we service full-size appliances in Middlesex, Essex & Norfolk County MA.
Condo / Townhouse
HOA-approved. Insurance certificates & board documentation on request.
Same-Day Service
Call before noon for today's slot across all Greater Boston zip codes.
All Major Brands
Samsung, LG, Sub-Zero, Miele, Viking & 40+ more.
Upfront Pricing
Flat-rate quotes before work starts — no surprise charges.
90-Day Warranty
Parts & labor guaranteed. We return at no charge if needed.
MA Licensed & Insured
State-licensed, fully bonded & insured
HOA & Board Ready
Insurance certificates on request
Flexible Scheduling
Mon–Sat 7am–8pm · Sun 9am–5pm
Upfront Fixed Pricing
No hidden fees — price locked before we start
How It Works
01
Book Online or Call
Schedule in 2 min or call (617) 812-1425
02
Tech Arrives
Usually same day in a 2-hr window
03
Diagnose & Quote
Upfront price — no work without approval
04
Fix & Test
Repair done, tested before we leave
Related Services
Not Cleaning Properly
Not Draining
Door Won't Close
Making Unusual Noise
Not Filling with Water
Leaking Water
Dishwasher Won't Start
Leaving Residue on Dishes
Not Cleaning Dishes Well
Not Filling with Water
Overfilling with Water
Leaking from Door
Leaking from Bottom
Soap Dispenser Not Opening
Rinse Aid Not Dispensing
Dishes Not Drying Properly
Heating Element Failure
Spray Arms Clogged
Spray Arm Not Spinning
Wash Pump Failure
Drain Pump Failure
Mineral Scale Buildup
White Spots on Dishes
Cloudy Glassware
Dishwasher Smells Bad
Drain Filter Clogged
Door Latch Failure
Control Board Failure
Cycles Running Too Long
Stopping Mid-Cycle
Error Code Displayed
Grinding Noise from Pump
Humming but Not Starting Cycle
Water on Floor Under Dishwasher
Rust Inside Dishwasher Tub
Rack Tines Rusting
Top Rack Not Cleaning
Bottom Rack Not Cleaning
Touchpad Not Responding
Door Spring Broken
Fills and Immediately Drains
Running Constantly / Cycle Won't End
Detergent Tablet Not Dissolving
White Deposits on Plastic Containers
Dishwasher Interior Rusting
Cloudy Film Inside Tub
Glassware Permanently Etched
FH / Water Inlet Error (Whirlpool/KitchenAid)
Leak Detection System Tripped
Air Gap Clogged
Garbage Disposal Connection Problem
Hard Food Disposer Failed
Starting Intermittently
Exterior Too Hot to Touch
Steam Escaping from Door
Built-In Water Softener Not Working
Food Particles on Dishes After Washing
Salt Indicator Light On
Child Lock Activated and Stuck
Poor Results After Switching Detergent
Not Using Hot Water at All
Three-in-One Dishwasher Tablet Not Working Properly
High-Temperature Wash Not Working
Delay Start Feature Not Working
Burning Smell from Dishwasher
Control Panel Getting Wet
Spray Arm Spin Test Failed
Bottom Spray Arm Missing or Broken
Third Rack Not Cleaning (Third-Rack Models)
Not Filling with Enough Water
Sanitize Indicator Not Illuminating
Spray Arm Hitting a Dish During Cycle
Steam Wash Option Not Working
Cycle Selector Knob Broken
Available Now · Greater Boston, MA
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ProFix Appliance Repair Boston — trusted by thousands of Greater Boston homeowners. Same-day slots available.
Why Is Your Sub-Zero Dishwasher Knocking During Wash Cycle?
A periodic knocking sound occurs during the wash cycle.
Common Causes
- 1Spray arm hitting an item protruding through the rack
- 2Loose item on bottom of tub being knocked by spray arm
- 3Spray arm not securely attached and wobbling during rotation
- 4Debris in wash pump creating intermittent noise
- 5Utensil fallen from upper rack to tub floor
How We Fix It
Our technician will inspect the spray arm attachment, check the tub for loose items, and clear any debris in the pump.
- Diagnostic included when we do the repair
- Genuine Sub-Zero OEM parts
- Avg repair time: 1–2 hours
Typical repair cost: $120–$380
Average repair time: 1–2 hours · 90-day parts & 30-day labor warranty included
Other Sub-Zero Dishwasher Issues in Burlington & Woburn
Not Cleaning ProperlyNot DrainingDoor Won't CloseMaking Unusual NoiseNot Filling with WaterLeaking WaterDishwasher Won't StartLeaving Residue on DishesNot Cleaning Dishes WellNot Filling with WaterOverfilling with WaterLeaking from DoorLeaking from BottomSoap Dispenser Not OpeningRinse Aid Not DispensingDishes Not Drying ProperlyHeating Element FailureSpray Arms CloggedSpray Arm Not SpinningWash Pump FailureDrain Pump FailureMineral Scale BuildupWhite Spots on DishesCloudy GlasswareDishwasher Smells BadDrain Filter CloggedDoor Latch FailureControl Board FailureCycles Running Too LongStopping Mid-CycleError Code DisplayedGrinding Noise from PumpHumming but Not Starting CycleWater on Floor Under DishwasherRust Inside Dishwasher TubRack Tines RustingTop Rack Not CleaningBottom Rack Not CleaningTouchpad Not RespondingDoor Spring BrokenFills and Immediately DrainsRunning Constantly / Cycle Won't EndDetergent Tablet Not DissolvingWhite Deposits on Plastic ContainersDishwasher Interior RustingCloudy Film Inside TubGlassware Permanently EtchedFH / Water Inlet Error (Whirlpool/KitchenAid)Leak Detection System TrippedAir Gap CloggedGarbage Disposal Connection ProblemHard Food Disposer FailedStarting IntermittentlyExterior Too Hot to TouchSteam Escaping from DoorBuilt-In Water Softener Not WorkingFood Particles on Dishes After WashingSalt Indicator Light OnChild Lock Activated and StuckPoor Results After Switching DetergentNot Using Hot Water at AllThree-in-One Dishwasher Tablet Not Working ProperlyHigh-Temperature Wash Not WorkingDelay Start Feature Not WorkingBurning Smell from DishwasherControl Panel Getting WetSpray Arm Spin Test FailedBottom Spray Arm Missing or BrokenThird Rack Not Cleaning (Third-Rack Models)Not Filling with Enough WaterSanitize Indicator Not IlluminatingSpray Arm Hitting a Dish During CycleSteam Wash Option Not WorkingCycle Selector Knob Broken
Still have questions?
Our Boston team is ready — same-day service across Middlesex, Essex & Norfolk Counties.