Whirlpool's article for a WDT970SAKZ that will not start lists six checks: water turned on (the valve fully open), Control Lock, standby or Delay Wash, door closed and latched, a 30 second power cycle, and the circuit breaker or fuse. The manual's own list is short: breaker or fuse, door closed and latched, the cycle set correctly, water on, the float switch wire under the unit connected and Control Lock off. If the door is not fully latched the dishwasher will fail to start or resume a cycle or turn on the fan; on most models you hear a click.
Differential
Likely causes of “Whirlpool dishwasher will not start or respond”, and how to tell them apart
- 1
The door is not latched
What separates it The panel lights but no cycle starts because the door is not latched
How to confirm Press the door firmly closed until you hear the latch click
- 2
Control Lock or Kosher mode is on
What separates it Buttons do nothing and the lock light flashes three times
How to confirm Follow the control lock page; press Cancel to leave Kosher mode
- 3
Delay Wash or standby mode
What separates it The dishwasher seems idle after Start because Delay Wash or standby mode is on
How to confirm Open or close the door to wake it, and clear any Delay Wash setting
- 4
The float switch wire is disconnected
What separates it A dishwasher that will not run after service or installation
How to confirm Reconnect the float switch wire under the unit with power off
Before you touch a setting
Record this first — changing settings destroys the evidence
- Whether the panel lights when the door is opened or closed
- Whether the lock light flashes when a button is pressed
- Whether a breaker tripped or a blinking pattern appears
Try in this order
0 of 5 completedCheck power
ReversibleLook at the circuit breaker or fuse. The manual requires a 120 V 60 Hz supply on a 15 or 20 amp fused circuit.
Latch the door
ReversibleFirmly press the door closed until the latch clicks. If the door is not fully latched the dishwasher will fail to start a cycle, resume a cycle or turn on the fan.
Open the water valve
ReversibleEnsure the water valve under the sink is fully open. Whirlpool says modern dishwashers need immediate water pressure to begin a cycle and will refuse to start or show an error if the valve is closed.
Check the locks and modes
ReversibleIf any button flashes the lock light three times, Control Lock is on. Cancel exits Kosher Consumer Friendly mode. To wake the dishwasher from standby or sleep open or close the door or press Start.
Reset the control and check the float
ReversibleDisconnect power for 30 seconds. Also check the float switch wire under the product is connected to the float switch.
Model-specific
What is true of this model and not of its siblings
- Electrical requirements
- The manual requires 120 V, 60 Hz AC, a 15 or 20 amp fused supply, copper wire only, and no more than two 12 AWG field conductors plus a ground in the terminal box. It recommends a time-delay fuse or breaker, allows sharing a circuit with a garbage disposal if the branch circuit is not overloaded, and asks for a UL listed power cord kit plugged into a grounded 3-prong outlet.
- Parts for this problem on the WDT970SAKZ (RepairClinic, 2026-09-21)
- latch- door, part number W11412299, at $25.90; $60.00 cash back user interface control panel, part number W11806852, at $266.16; dishwasher power cord kit - contains power cord,, part number 4317824, at $25.90.
- Other models this page answers
- These steps also fit the WDT750SAKZ dishwasher, WDT730HAMZ dishwasher, WDTA50SAHZ dishwasher, WDF520PADM dishwasher.
Stop boundary
When this stops being a self-service repair
- !If the dishwasher still will not start after the breaker, door, water and lock checks and a 30 second power cycle, contact Whirlpool service
- !If a breaker trips as the dishwasher starts, stop and call an electrician
Evidence ledger
Sources behind this answer
Whirlpool's own article on a dishwasher that will not fill, including the Start/Resume indicator and the 3 second door rule.
Whirlpool's own manual for this model, English pages 1 to 29: maintenance, loading, care, setting menu, error codes, installation and the check-operation cycle.
Whirlpool's own help articles for its dishwashers, each; the article for this page is named in the page's notes.
Whirlpool's own product-assistance and cleaning articles for its dishwashers.
Parts and list prices as shown on RepairClinic's parts search for this model number on 2026-09-21.
Exact questions
Common questions
What is Delay Wash?+
An option that runs the dishwasher later or at off-peak hours, so it will not run until the delay time.
Does the door need a click?+
On most models you hear a click when the latch engages.
What is the float switch wire?+
A wire under the unit that must be connected to the float switch on the drip tray.
Why does it beep and not start?+
It may be locked, unlatched or showing a code; check the lights.