The GE Profile PDT785's Lock Controls option stops selections being made, and it can be set after a cycle has started so nothing changes mid-cycle. GE's manual says to lock or unlock, depending on the model, press and hold the Dry Boost pad, or press the Steam-Sani, Presoak-Sani or Sanitize pads at the same time, for 3 seconds. The Lock Controls light comes on when locked and goes off when unlocked. If the panel ignores presses, also check the Sabbath/Door Wake Up mode, which makes the display, sounds and interior lights ignore the door until a pad is pressed.
Differential
Likely causes of “GE dishwasher controls are locked or buttons do not respond”, and how to tell them apart
- 1
Lock Controls is on
What separates it The Lock Controls light is lit and pads do nothing
How to confirm Press and hold the Dry Boost pad, or the Steam-Sani, Presoak-Sani or Sanitize pads together, for 3 seconds
- 2
Sabbath/Door Wake Up mode is on
What separates it The display, sounds and lights do not respond to the door opening
How to confirm Press any pad to reactivate the control and lights
- 3
The display timed out
What separates it The panel is dark after two minutes with the door open
How to confirm Close and open the door, or press any pad, to activate the display
- 4
Pads were touched more than 30 seconds apart
What separates it The panel lights go off while you set controls
How to confirm Touch each pad within 30 seconds of the last, and touch any pad to relight
Before you touch a setting
Record this first — changing settings destroys the evidence
- Whether the Lock Controls light is lit
- Which of the Dry Boost or sanitize pads your model has
- Whether the display is on after opening and closing the door
Try in this order
0 of 5 completedLook for the Lock Controls light
ReversibleThe light turns on to show the controls are locked and off to show they are unlocked.
Hold the right pad
ReversibleDepending on the model, press and hold the Dry Boost pad, or the Steam-Sani, Presoak-Sani or Sanitize pads at the same time, for 3 seconds.
Wake the display
ReversibleThe display turns off if the door stays open two minutes. To activate it close and open the door or press any pad.
Check Sabbath mode
ReversibleTo turn Sabbath/Door Wake Up mode on or off press and hold the Cycle Select and Wash Temp Boost pads for 5 seconds, close the door and wait 3 minutes. In the off mode the display, sounds and interior lights ignore the door.
Check the wall switch
ReversibleIn some installations the power to the dishwasher comes through a wall switch, often next to the disposer switch. Make sure it is on.
Model-specific
What is true of this model and not of its siblings
- Related pad combinations
- Dry Boost pressed 5 times within 5 seconds mutes the control sounds; pressed 5 times within 3 seconds toggles the double end-of-cycle beep, confirmed by a triple beep. Holding Start for 3 seconds cancels a cycle, and Delay Hours followed by Start begins a countdown.
- Parts for this problem on the PDT785 (RepairClinic, 2026-09-21)
- configured machine control board, part number WD21X34778, at $200.58; configured top ui control with cover, part number WD21X29519, at $301.80.
- Other models this page answers
- These steps also fit models PDT755, GDP665, GDT670, GDT650, GDF650, GDF510.
Stop boundary
When this stops being a self-service repair
- !If the panel stays unresponsive after unlocking and cycling power, contact GE Appliances service
- !If the display never lights with the breaker on, check the wall switch and the fuse before calling service
Evidence ledger
Sources behind this answer
GE Appliances' own support articles for dishwashers; the article for this page is named in the page's notes.
GE's own page for the Profile PDT785 with its installation guide and specifications.
Parts and list prices as shown on RepairClinic's parts search for this model number on 2026-09-21.
Exact questions
Common questions
How do I lock the GE dishwasher controls?+
Press and hold the Dry Boost pad, or the Steam-Sani, Presoak-Sani or Sanitize pads together, for 3 seconds, depending on the model.
How do I know it is locked?+
The Lock Controls light is on.
Can I lock after starting?+
Yes. You can lock the controls after a cycle has started to prevent changes.
What is Sabbath mode?+
A mode where the display, control sounds and interior lights do not respond to the door opening; press any pad to reactivate.
How do I mute the sounds?+
Press the Dry Boost pad 5 times within 5 seconds.
Why do the panel lights go off?+
Each pad must be touched within 30 seconds of the others when setting controls.
Does locking stop the door opening?+
No, locking does not stop the door opening, and it stops pad selections only.
What does a triple beep mean?+
The end-of-cycle beep option was turned on or off.