Wash temperature sensor reading is invalid or out of range; E17 displayed and heating may be disabled.

Safety first: Disconnect power and allow the wash tank to cool before removing the sensor.

Corrective actions:

• Locate wash tank probe: Find the Champion wash tank temperature sensor mounted in the tank wall or sump.
• Inspect for scale and buildup: Remove the sensor and check for heavy lime scale or debris. Clean gently with descaling solution if reusable.
• Check wiring: Inspect the harness from the sensor to the control board for cuts, abrasions, or loose connectors.
• Test sensor: Measure resistance at room temperature and compare to specification. Replace if readings are out of range or intermittent when the sensor is moved.
• Board evaluation: If a known-good sensor still results in E17, the control board may need replacement.

When to call a technician: For persistent sensor errors or if descaling requires tank chemical treatment, professional service is recommended.