Zanussi i22

Zanussi error code I22 indicates: Zanussi Aquacycle / ZDF Series / AirDry Dishwasher: Siphon pressure sensor alarm i22; analog sensor detects back-pressure after drain cycle completes..

The primary root cause for Zanussi code I22 is: On Zanussi (Zanussi Aquacycle / ZDF Series / AirDry Dishwasher) models: Kitchen sink siphon spigot not drilled out on new installation, grease blockage in drain hose non-return flap, or restricted wall pipe..

To resolve error code I22: Inspect connection spigot under kitchen sink (ensure plastic membrane was drilled out). Clean rubber non-return flap in sump outlet. 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 I22 persists, the physical component causing On Zanussi (Zanussi Aquacycle / ZDF Series / AirDry Dishwasher) models: Kitchen sink siphon spigot not drilled out on new installation, grease blockage in drain hose non-return flap, or restricted wall pipe. must be inspected or replaced.

Set a digital multimeter to ohms (Ω). Disconnect power and test Mechanical Pressure Switch Contacts / Inductive Frequency Sensor across Across switch spade contacts with harness unplugged; electronic output: 40Hz–50Hz frequency signal. Expected nominal reading is Mechanical: Continuity 0.0Ω–0.2Ω (Empty: 11-12, Full: 11-14). Electronic: 20Ω–45Ω coil resistance.. Tolerance: Mechanical switch contacts must transition cleanly on gentle breath pressure. Coil ~22Ω ±5%..

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.