AEG i22

AEG error code I22 indicates: AEG Favorit / ProClean / ComfortLift Series: Siphon pressure sensor alarm i22; analog sensor detects back-pressure after drain cycle completes..

The primary root cause for AEG code I22 is: On AEG (AEG Favorit / ProClean / ComfortLift Series) 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. Rotate selector to 12 o'clock (OFF), press and hold Start/Pause and Exit simultaneously for 4 seconds until the diagnostic LED sequence resets error memory.

Resetting power (unplugging for 5–10 minutes) clears temporary memory errors. However, if AEG code I22 persists, the physical component causing On AEG (AEG Favorit / ProClean / ComfortLift Series) 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.