Arthur Martin E51

Arthur Martin error code E51 indicates: Arthur Martin Electrolux AWF Series / Silence Plus Washer: Motor drive triac short circuit E51; universal motor spins at maximum uncontrolled speed immediately at start..

The primary root cause for Arthur Martin code E51 is: On Arthur Martin (Arthur Martin Electrolux AWF Series / Silence Plus Washer) models: Power triac on main PCB short-circuited (anode to cathode breakdown), motor field winding grounded, or carbon dust buildup bridging terminals..

To resolve error code E51: Blow compressed air across motor terminal block to clear carbon dust. Measure motor insulation resistance to ground (> 10 MΩ). Replace main PCB triac. 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 E51 persists, the physical component causing On Arthur Martin (Arthur Martin Electrolux AWF Series / Silence Plus Washer) models: Power triac on main PCB short-circuited (anode to cathode breakdown), motor field winding grounded, or carbon dust buildup bridging terminals. 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.