Iberna ILF / EcoTime Pro Inverter Washing Machine: Electronic pressure sensor calibration fault E20; signal frequency received from the analog pressure transducer is out of valid bounds.
On Iberna washing machines powered by reliable GIAS compact micro-controller, high-efficiency wash group, and fast-response NTC thermistors: Blocked pressure tube, punctured silicone diaphragm, or defective oscillator in electronic pressure switch (~25.6 kHz empty).
Inspect rubber pressure hose for pinholes or splits. Blow through tube towards tub to clear compression dome. Measure sensor output frequency (~25.6 kHz empty). Move program selector to Stop, hold Start/Pause and Spin keys together for 5 seconds until status LEDs extinguish, then restart.
