Westinghouse i20

Westinghouse error code I20 indicates: Westinghouse WDF Series / Fast 30 Wash Dishwasher: Water drain timeout error i20; wash water remains in sump after 90 seconds of drain pump activation..

The primary root cause for Westinghouse code I20 is: On Westinghouse (Westinghouse WDF Series / Fast 30 Wash Dishwasher) models: Clogged fine mesh filter in tub sump, lemon seeds or broken glass jammed in drain impeller, kinked waste hose, or drain pump coil open (160–220 Ω)..

To resolve error code I20: Remove sump filter cylinders and clean under hot water. Check drain pump impeller through sump cavity. Measure pump motor resistance (160–220 Ω). Press Start/Pause together with Temp button for 5 seconds to exit service diagnostic mode and clear persistent EEPROM alarm.

Resetting power (unplugging for 5–10 minutes) clears temporary memory errors. However, if Westinghouse code I20 persists, the physical component causing On Westinghouse (Westinghouse WDF Series / Fast 30 Wash Dishwasher) models: Clogged fine mesh filter in tub sump, lemon seeds or broken glass jammed in drain impeller, kinked waste hose, or drain pump coil open (160–220 Ω). must be inspected or replaced.

Set a digital multimeter to ohms (Ω). Disconnect power and test Drain Pump Motor Stator Coils across Across pump motor spade terminals (L-N unclipped). Expected nominal reading is 160Ω–220Ω (Sync 230V) / 20Ω–45Ω (3-Phase BLDC). Tolerance: ±10% balance. Insulation resistance between coil and motor chassis must exceed 20MΩ..

Standard electrical safety protocol: 1. Disconnect 230V mains power before opening panels. 2. Verify zero voltage at test points. 3. Allow hot water or heating elements to cool below 30°C before handling.