Exact model-family answer directory
Whirlpool WDT730HAMZ dishwasher troubleshooting
Choose the symptom actually shown by WDT730HAMZ. Whirlpool dishwasher; exact model determines filter, third rack, fan/heat and code display. Error codes remain separate records because the same characters can mean different things on another platform.
Whirlpool WDT730HAMZ dishwasher controls are locked or buttons do not respond
For the Whirlpool WDT730HAMZ dishwasher, control lock, wet panels, active cycles and door state can disable keys without a failed console.
Open record Whirlpool · long cycleWhirlpool WDT730HAMZ dishwasher cycle takes too long
For the Whirlpool WDT730HAMZ dishwasher, sensor wash, heating delays, water temperature and repeated fill/drain correction can extend time.
Open record Whirlpool · detergent doorWhirlpool WDT730HAMZ dishwasher detergent door will not open or detergent remains
For the Whirlpool WDT730HAMZ dishwasher, a wet cup, blocked lid, short/prewash cycle or weak circulation can leave detergent even when the latch works.
Open record Whirlpool · not cleaningWhirlpool WDT730HAMZ dishwasher does not clean dishes
For the Whirlpool WDT730HAMZ dishwasher, fill, circulation, spray-arm movement, loading, detergent and water temperature must all be present.
Open record Whirlpool · not dryingWhirlpool WDT730HAMZ dishwasher does not dry dishes
For the Whirlpool WDT730HAMZ dishwasher, plastic retention, rinse aid, selected option, final-rinse heat and vent/fan design affect drying.
Open record Whirlpool · leakingWhirlpool WDT730HAMZ dishwasher is leaking water
For the Whirlpool WDT730HAMZ dishwasher, locate the first drop during fill, wash and drain instead of diagnosing from the final puddle.
Open record Whirlpool · spotsWhirlpool WDT730HAMZ dishwasher leaves spots, film or cloudy glassware
For the Whirlpool WDT730HAMZ dishwasher, hard water, detergent dose, rinse aid, temperature and permanent glass etching require different corrections.
Open record Whirlpool · grindingWhirlpool WDT730HAMZ dishwasher makes grinding, humming, knocking or squealing noises
For the Whirlpool WDT730HAMZ dishwasher, identify whether the sound occurs during fill, circulation or drain.
Open record Whirlpool · odorWhirlpool WDT730HAMZ dishwasher smells bad or musty
For the Whirlpool WDT730HAMZ dishwasher, food soil, filter/sump residue, drain backflow and long idle periods should be separated from electrical odor.
Open record Whirlpool · stopsWhirlpool WDT730HAMZ dishwasher stops or pauses mid-cycle
For the Whirlpool WDT730HAMZ dishwasher, record whether the stop occurs during fill, circulation, heat or drain and whether the door/lights changed.
Open record Whirlpool · Wi-FiWhirlpool WDT730HAMZ dishwasher will not connect to Wi-Fi or the manufacturer's app
For the Whirlpool WDT730HAMZ dishwasher, confirm wireless eligibility, account ownership and supported network requirements before resetting.
Open record Whirlpool · not drainingWhirlpool WDT730HAMZ dishwasher will not drain or leaves water in the tub
For the Whirlpool WDT730HAMZ dishwasher, separate normal sump water from a blocked filter, pump cover, hose, air gap, disposal connection or household drain.
Open record Whirlpool · not fillingWhirlpool WDT730HAMZ dishwasher will not fill with water
For the Whirlpool WDT730HAMZ dishwasher, door latch, supply valve, inlet hose, float and control state should be checked before the inlet valve.
Open record Whirlpool · won't startWhirlpool WDT730HAMZ dishwasher will not start or respond
For the Whirlpool WDT730HAMZ dishwasher, prove power, door latch, control lock, delay and Start/Resume behavior first.
Open recordConfirm the model first
Which units this covers, and how to tell yours is one of them
Every answer below is scoped to these model identifiers. A neighbouring model in the same line can use a different part, a different reset sequence or a different radio, so matching the identifier before following a procedure is the step that decides whether the rest of the page applies to you.
- Model numbers and patterns
- WDT730HAMZ
- What that covers
- Whirlpool dishwasher; exact model determines filter, third rack, fan/heat and code display.
Published specification
What is true of this model and changes how you fix it
These are the properties that decide which procedure applies. Each is read from the manufacturer’s own published figures for this model, not carried over from a sibling that shares its retail name.
- Drying — heated dry (has an element)
- Heated-dry option with an element — dries plastics better than Bosch, but keep plastics off the tub floor to avoid melting. Rinse aid helps.
- Wash & racks
- Stainless tub with adjustable racks and a sensor cycle; check your build for a 3rd rack. Manual filter must be cleaned periodically.
- Drain path
- 'Won't drain' is usually the filter, drain hose, air gap, or an un-removed disposer knockout plug.
Where these figures were read. whirlpool.com WDT730HAMZ (stainless tub, heated dry), read 2026-09-01
Manufacturer support for this product line. Whirlpool Product Help — Product Help. Official Whirlpool use, installation, maintenance, error-code and troubleshooting library.
Exact questions
Questions that only have an answer for the Whirlpool WDT730HAMZ dishwasher
Each answer below uses this model’s own published figures. The same question asked about a different model in the line has a different answer, which is why it is answered here rather than on a general page.
My Whirlpool WDT730HAMZ dishes are wet at the end.+
If you are not using the heated-dry option, dishes rely on rinse aid and residual heat, so plastics stay damp. Turn on Heat Dry (or Sani Rinse) for hotter, drier results, keep the rinse-aid tank filled, and crack the door open after the cycle. Unload the bottom rack first so drips from above do not fall on it. This model does have a heating element, so it can dry better than a Bosch if you enable it.
Structured depth, not empty permutations
Every published record carries a direct answer, scope, ordered fixes, risk notes and sources.
Device and manufacturer hubs share a consistent record system, but each answer carries the relevant controls, fault boundaries, consequences and official support entry point for that platform.
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