Arthur Martin EH1

Arthur Martin error code EH1 indicates: Arthur Martin Electrolux AWF Series / Silence Plus Washer: Mains electrical frequency out of range EH1; frequency is outside the 43 Hz to 67 Hz window..

The primary root cause for Arthur Martin code EH1 is: On Arthur Martin (Arthur Martin Electrolux AWF Series / Silence Plus Washer) models: Operation on uncalibrated portable generator or off-grid solar inverter, severe electrical grid harmonic distortion, or failing PCB timer clock..

To resolve error code EH1: Measure electrical frequency with multimeter frequency mode (must be 50.0 Hz ± 0.5 Hz). Avoid operating machine from non-sinusoidal generators. 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 EH1 persists, the physical component causing On Arthur Martin (Arthur Martin Electrolux AWF Series / Silence Plus Washer) models: Operation on uncalibrated portable generator or off-grid solar inverter, severe electrical grid harmonic distortion, or failing PCB timer clock. must be inspected or replaced.

Set a digital multimeter to ohms (Ω). Disconnect power and test 3-Phase Motor Windings / Tacho Generator / Carbon Brushes across Across phase pins U-V, V-W, U-W on motor harness; across tacho pins. Expected nominal reading is 3Ω–6Ω (BLDC phase U-V-W) / 60Ω–180Ω (Tacho coil) / 1.5Ω–3.5Ω (Universal stator). Tolerance: BLDC phase winding values must be strictly balanced within ±0.3Ω. Hand rotation generates 1V–4V AC on tacho..

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.