Model support
Whirlpool WDF750SAYT Dishwasher
Troubleshooting, fault codes and repair information for the Whirlpool WDF750SAYT, organized around the engineering platform this dishwasher is built on.
- Brand
- Whirlpool
- Model
- WDF750SAYT
- Engineering revisions
- WDF750SAYT, WDF750SAYT3
- Appliance
- Dishwasher
- Platform
- Dishwasher platform, documentation from about 2013
- Models on this platform
- 14 across KitchenAid, Whirlpool
- Documented fault codes
- 31 with explanations
- Service documentation
- Tech sheet, service manual (used by our technicians; not published)
Whirlpool WDF750SAYT error codes
These are the fault codes documented for the platform this model belongs to. A code describes a condition the control detected; it does not by itself identify a failed part. Select a code for causes, safe checks and repair context.
| Code | Meaning | Areas involved |
|---|---|---|
| 1-1 | Control: pilot relay stuck on | Main control board, Wiring harness and connectors |
| 1-2 | Control: software issue | Main control board |
| 2-1 | User interface: stuck key | User interface / keypad board, Wiring harness and connectors |
| 2-2 | User interface: no response from UI | User interface / keypad board, Main control board, Wiring harness and connectors |
| 3-1 | Thermistor/OWI: open | Temperature sensor (thermistor), Turbidity (soil) sensor, Wiring harness and connectors |
| 3-2 | Thermistor/OWI: shorted | Temperature sensor (thermistor), Turbidity (soil) sensor, Wiring harness and connectors |
| 3-3 | OWI: failed calibration | Turbidity (soil) sensor, Wiring harness and connectors, Drain pump |
| 4-3 | Wash motor: motor not running | Circulation (wash) pump and motor, Main control board, Wiring harness and connectors |
| 4-4 | Wash motor: motor failure | Circulation (wash) pump and motor, Main control board, Wiring harness and connectors |
| 5-1 | Door switch: door stuck open | Door latch and switch, Door switch, Wiring harness and connectors |
| 5-2 | Door switch: door stuck closed | Door switch, Door latch and switch, Wiring harness and connectors |
| 6-1 | Inlet water: low or no water | Water inlet valve, Float and float switch, Flow meter |
| 6-2 | Inlet water: fill valve electrical problem | Water inlet valve, Wiring harness and connectors, Main control board |
| 6-3 | Inlet water: suds or air in pump | Detergent dispenser, Diverter motor and disk, Wiring harness and connectors |
| 6-4 | Inlet water: float switch open (overfill) | Float and float switch, Water inlet valve, Drain pump |
| 6-6 | Inlet water: cool water | Temperature sensor (thermistor), Wiring harness and connectors |
| 6-7 | Inlet water: flow meter | Flow meter, Wiring harness and connectors |
| 6-8 | Inlet water: water softener regeneration valve electrical problem | Main control board, Wiring harness and connectors |
| 7-1 | Heating: no heat | Heating element, Wiring harness and connectors, Main control board |
| 7-2 | Heating: heater stuck on | Main control board, Heating element |
| 8-1 | Draining: slow drain | Drain pump, Filter assembly |
| 8-2 | Draining: drain motor electrical problem | Drain pump, Wiring harness and connectors, Main control board |
| 8-3 | Draining: drain stuck on | Main control board, Drain pump |
| 8-4 | Draining: drain motor electrical problem | Drain pump, Wiring harness and connectors, Main control board |
| 9-1 | Diverter: can't find position | Diverter motor and disk, Wiring harness and connectors, Main control board |
| 9-2 | Diverter: stuck on | Main control board, Diverter motor and disk |
| 9-3 | Diverter: disk missing | Diverter motor and disk |
| 9-4 | Diverter: lower spray arm error | Wiring harness and connectors, Main control board |
| 10-1 | Other: dispenser electrical problem | Detergent dispenser, Wiring harness and connectors, Main control board |
| 10-2 | Other: vent wax motor electrical problem | Wiring harness and connectors, Main control board |
| 10-3 | Other: drying fan error | Drying fan, Wiring harness and connectors, Main control board |
Common dishwasher problems
- Not draining
Documented check order on this platform: Water inlet valve → Water-level pressure sensing - Not cleaning
Documented check order on this platform: Load size or distribution → Filters and spray arms → Detergent type or amount → Diverter - Not filling
- Not drying
Documented check order on this platform: Dispenser → Exhaust vent restriction → Detergent type or amount - Leaking
Documented check order on this platform: Drive or pump motor → Detergent type or amount → Exhaust vent restriction - Not starting
Documented check order on this platform: User interface / keypad - Lights blinking
Documented check order on this platform: Detergent type or amount
Typical dishwasher repair costs
| Repair | Typical range | Labor |
|---|---|---|
| Dishwasher drain pump replacement | $180–$400 | Moderate |
| Dishwasher water inlet valve replacement | $180–$360 | Light |
| Dishwasher door latch replacement | $180–$350 | Light |
| Dishwasher door switch replacement | $180–$320 | Light |
| Dishwasher detergent dispenser replacement | $180–$370 | Moderate |
| Dishwasher thermistor or turbidity sensor replacement | $180–$330 | Light |
| Dishwasher circulation pump and wash motor replacement | $300–$620 | Heavy |
| Dishwasher heating element or drying fan replacement | $190–$410 | Moderate |
| Dishwasher diverter motor replacement | $180–$390 | Moderate |
| Dishwasher main control board replacement | $260–$590 | Moderate |
Typical total ranges for the Las Vegas area, parts and labor included. The final cost depends on diagnosis, the exact model, parts availability and whether other damage is found.
Repair or replace?
Dishwashers typically last about 9–12 years. Service documentation for this platform dates from about 2013, so the oldest units built on it are now around 13 years old. The age printed in the serial number, the repair cost and the condition of the rest of the appliance decide it. Use the repair-or-replace guide.
Models built on the same platform
These models share this platform's service documentation, so fault codes and most diagnostic steps are the same.
- Whirlpool WDF730PAYM
- Whirlpool WDF730PAYT
- Whirlpool WDF730PAYW
- Whirlpool WDF735PABW
- Whirlpool WDF750SAYW
- Whirlpool WDT790SLYW
- Whirlpool WDT910SSYW
- KitchenAid KDFE104DBL
- KitchenAid KDFE104DSS
- KitchenAid KDFE104DWH
- KitchenAid KDTE104DBL
- KitchenAid KDTE104DSS
- KitchenAid KDTE104DWH
Need your Whirlpool WDF750SAYT repaired in the Las Vegas area?
We repair Whirlpool, Maytag, KitchenAid, JennAir, Amana and other Whirlpool-family appliances in Las Vegas, Henderson, Summerlin and Boulder City. A model number helps but is never required to book.