Samsung's cycle chart for the DW80B7070 gives the real numbers: Auto 109 to 135 minutes, Normal 111 to 128, Heavy 137, Delicate 79, Express 60 about an hour and Pre Blast 10 minutes. Anything much longer has a documented cause: Samsung's troubleshooting table says if the dishwasher is connected to a cold water supply additional time is required to heat the cold water, and it must be connected to hot water at 120 F for best performance. SmartDry Low increases the cycle time, Sanitize raises the final rinse to 163 F, and Hi-Temp Wash adds heating time.
Differential
Likely causes of “Samsung dishwasher cycle takes too long”, and how to tell them apart
- 1
A cold water supply
What separates it The cycle runs much longer as it heats the cold water
How to confirm Connect the dishwasher to a hot water supply at about 120 F
- 2
SmartDry Low or Hi-Temp Wash selected
What separates it The cycle is longer with the option lit because SmartDry Low or Hi Temp Wash was selected
How to confirm SmartDry Low increases cycle time; deselect options you do not need
- 3
Heavy or Auto with heavy soil
What separates it Heavy runs 137 minutes and Auto extends when it senses heavy soil
How to confirm Use Normal or Express 60 for lighter loads
- 4
Low water pressure
What separates it The dishwasher waits to fill and takes longer because of low water pressure
How to confirm Check pressure is between 20 and 120 psi
Before you touch a setting
Record this first — changing settings destroys the evidence
- The cycle and options and the total time taken
- Whether the supply is hot or cold
- Whether any code appeared on the display
Try in this order
0 of 5 completedCompare with the chart
ReversibleAuto is 109 to 135 minutes, Normal 111 to 128, Heavy 137, Delicate 79, Express 60 about 60 and Pre Blast 10 minutes.
Check the water supply
ReversibleCheck the supply line is connected to hot water. To work properly the dishwasher must be connected to a hot water supply; if it is on cold, extra time is needed to heat the water.
Check pressure
ReversibleThe water pressure should be between 20 and 120 psi (140 to 830 kPa). Low pressure lengthens fill times.
Trim the options
ReversibleSanitize raises the final rinse to 163 F, and SmartDry Low reinforces drying with circulation of heated air and increases the cycle time. Deselect them for a shorter run.
Use a shorter cycle
ReversibleExpress 60 takes about an hour; Lower Rack uses only the lower nozzle to reduce time and power for a small load.
Model-specific
What is true of this model and not of its siblings
- Cycle chart temperatures
- Main wash temperature runs 122 to 140 F (50 to 60 C) on Auto, 113 to 144 F on Normal, 149 F on Heavy, 122 F on Delicate and 131 F on Express 60. Water use is 4.0 to 5.3 gallons on Normal, 5.4 gallons on Heavy, 4.3 on Delicate, 2.9 on Express 60 and 1.1 on Pre Blast, and the Sanitize option raises the final rinse to 163 F.
- Parts for this problem on the DW80B7070 (RepairClinic, 2026-09-21)
- circulation pump motor with heater unit, part number DD93-01013A, at $349.36; sensor-tur, part number DD32-00008A, at $201.22; water inlet valve, with garden hose water supply, part number DD33-01002B, at $172.73.
- 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 the cycle runs far beyond the chart times with hot water and normal pressure, contact Samsung service
- !If a code such as 4C appears, follow the water supply check
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
Is there a one-hour cycle?+
Express 60 takes about 1 hour.
Why is my cycle much longer?+
A cold water supply requires additional time to heat the water.
Does SmartDry add time?+
SmartDry Low reinforces drying and increases the cycle time.
What is Pre Blast?+
A 10 minute cycle that dislodges large food debris and prevents caking, with no detergent or rinse.
What is Lower Rack for?+
It uses only the lower rack nozzle to reduce cycle time and power for a small load.
What supply pressure is required?+
20 to 120 psi (140 to 830 kPa).
Can I set a delay?+
Yes, up to 24 hours in one-hour increments.