Arthur Martin E31

Arthur Martin error code E31 indicates: Arthur Martin Electrolux AWF Series / Silence Plus Washer: Electronic pressure sensor frequency out of range E31; sensor output signal < 32 Hz or > 46 Hz..

The primary root cause for Arthur Martin code E31 is: On Arthur Martin (Arthur Martin Electrolux AWF Series / Silence Plus Washer) models: Defective internal oscillator in electronic pressure sensor, damaged diaphragm, open circuit on 5V DC/GND/Signal wires, or faulty MCU input pin..

To resolve error code E31: Use multimeter frequency mode (Hz) to measure signal on center pin (nominal empty frequency ~43.5 Hz). Replace electronic pressure switch if static frequency is out of 42–45 Hz range. Hold Départ/Pause and Option buttons firmly for 5 seconds until the red indicator extinguishes and service memory resets.

Resetting power (unplugging for 5–10 minutes) clears temporary memory errors. However, if Arthur Martin code E31 persists, the physical component causing On Arthur Martin (Arthur Martin Electrolux AWF Series / Silence Plus Washer) models: Defective internal oscillator in electronic pressure sensor, damaged diaphragm, open circuit on 5V DC/GND/Signal wires, or faulty MCU input pin. 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.