If the Samsung DW80B7070 will not start, Samsung's troubleshooting table lists five causes. The door is not closed completely, and the upper rack is not properly joined to the duct nozzle or is crooked or unbalanced. The START button was not pressed: press START before closing the door, then close it within 3 seconds. The dishwasher does not operate at all: check the power cable, the water supply valve, the pressure between 20 and 120 psi, and a tripped circuit breaker. Or the control panel is locked: unlock the Control Lock. If a code appears on the display, use the information code table.
Differential
Likely causes of “Samsung dishwasher will not start or respond”, and how to tell them apart
- 1
The door is not completely closed or the upper rack is out of place
What separates it The dishwasher will not start and the door seems shut
How to confirm Latch the door, and check the upper rack is joined to the duct nozzle and not crooked
- 2
START was not pressed before closing the door
What separates it Nothing happens after the door is closed because START was not pressed before closing the door
How to confirm Press START first, then close the door within 3 seconds
- 3
Control Lock is on
What separates it The Control Lock indicator blinks when buttons are pressed
How to confirm Hold Sanitize for three seconds to unlock the controls
- 4
The power cable is loose, the breaker is open or the water valve is closed
What separates it The panel is dark or the dishwasher never begins
How to confirm Reseat the power cable, reset the breaker and open the water valve
Before you touch a setting
Record this first — changing settings destroys the evidence
- Whether the panel lights when POWER is pressed
- Whether a code appears on the display
- Whether the Control Lock indicator is lit
Try in this order
0 of 5 completedLatch the door
ReversibleCheck the door is latched and closed completely, and check whether the upper rack is properly joined to the duct nozzle and is not crooked or unbalanced.
Press START then close the door
ReversibleTo start a cycle press START before closing the door, and close the door within 3 seconds. The dishwasher starts the cycle after draining for a few seconds.
Unlock the panel
ReversibleIf the Control Lock is on, hold the Sanitize button for three seconds with the power on.
Check power and water
ReversibleMake sure the power cable is connected properly and the circuit breaker has not opened. Check the water supply valve is open and pressure is between 20 and 120 psi.
Read any code
ReversibleIf an information code appears with a warning sound, use the information code table: LC leakage, 4C water supply, 5C drain, HC heating, 3C pump, PC zone wash, HC2 and HC4 dry heater.
Model-specific
What is true of this model and not of its siblings
- Information codes at a glance
- LC is a leakage check, 4C a water supply check, 5C a drain check, HC a high temperature heating check (run an empty cycle with detergent, then switch off the breaker and call service if it continues), 3C a pump operation check, PC a zone wash function check, HC2 a dry heater failure check and HC4 a dry heater overheat check, for which you unplug the power cord before contacting service.
- Checking the basics
- A dishwasher that will not start may have the door not fully latched, the control lock on, a tripped breaker or a stuck start button. Close the door firmly, hold the lock key to unlock and check the breaker. Press Start within a few seconds of closing the door.
- Resetting
- Turn the breaker off for a minute and back on, or hold the Power button as the manual directs. If an error code shows, look it up before calling service.
- Parts for this problem on the DW80B7070 (RepairClinic, 2026-09-21)
- assy cover door switch, part number DD97-00256A, at $148.22.
- Other models this page answers
- These steps also fit models DW80B6060, DW80R9950, DW80R7060, DW80N3030, DW50T6060.
Stop boundary
When this stops being a self-service repair
- !If the dishwasher still will not start after these checks, contact an authorized Samsung service center or call 1-800-SAMSUNG
- !If the breaker trips as the dishwasher starts, stop and call an electrician
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 will my Samsung dishwasher not start?+
The door may not be latched, START may not have been pressed, the panel may be locked or power or water may be missing.
What if I opened the door mid-cycle?+
Press START first, then close the door to resume.
What is PC?+
A zone wash function check. Turn it off and try again; contact service if it persists.
Can the upper rack stop it starting?+
Yes, if it is not joined to the duct nozzle or is crooked.
Does the dishwasher power off automatically?+
Yes, when the selected cycle is complete.