Zanussi i20

Zanussi error code I20 indicates: Zanussi Aquacycle / ZDF Series / AirDry Dishwasher: Water drain timeout error i20; wash water remains in sump after 90 seconds of drain pump activation..

The primary root cause for Zanussi code I20 is: On Zanussi (Zanussi Aquacycle / ZDF Series / AirDry 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). Hold Start/Pause plus Skip/Option button simultaneously for 5 seconds until three rapid confirmation beeps clear persistent error memory.

Resetting power (unplugging for 5–10 minutes) clears temporary memory errors. However, if Zanussi code I20 persists, the physical component causing On Zanussi (Zanussi Aquacycle / ZDF Series / AirDry 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.