Model support
Whirlpool WDT770PAYB Dishwasher
Troubleshooting, fault codes and repair information for the Whirlpool WDT770PAYB, organized around the engineering platform this dishwasher is built on.
- Brand
- Whirlpool
- Model
- WDT770PAYB
- Engineering revisions
- WDT770PAYB0, WDT770PAYB1, WDT770PAYB2, WDT770PAYB3
- Appliance
- Dishwasher
- Platform
- Dishwasher platform, documentation from about 2011
- Models on this platform
- 28 across Whirlpool
- Documented fault codes
- 29 with explanations
- Service documentation
- Tech sheet, service manual (used by our technicians; not published)
Whirlpool WDT770PAYB 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 |
| 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 → Drive or pump motor - Not filling
- Not drying
Documented check order on this platform: Dispenser → Exhaust vent restriction → Detergent type or amount → Drive or pump motor - 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 2011, so the oldest units built on it are now around 15 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 WDF530PAYQ
- Whirlpool WDF730PAYB
- Whirlpool WDF735PABB
- Whirlpool WDF735PABM
- Whirlpool WDF750SAYB
- Whirlpool WDF750SAYM
- Whirlpool WDF775SAYB
- Whirlpool WDF775SAYM
- Whirlpool WDF775SAYW
- Whirlpool WDF780SLYB
- Whirlpool WDF780SLYM
- Whirlpool WDF780SLYW
- Whirlpool WDF785SAAM
- Whirlpool WDT770PAYM
- Whirlpool WDT770PAYW
- Whirlpool WDT790SAYB
- Whirlpool WDT790SAYM
- Whirlpool WDT790SAYW
- Whirlpool WDT790SLYB
- Whirlpool WDT790SLYM
- Whirlpool WDT910SAYE
- Whirlpool WDT910SAYH
- Whirlpool WDT910SAYI
- Whirlpool WDT910SAYM
- Whirlpool WDT910SAYO
- Whirlpool WDT910SSYB
- Whirlpool WDT910SSYM
Need your Whirlpool WDT770PAYB 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.