Hoover Unb

Hoover error code UNB indicates: Hoover H-WASH 300 / 500 / 700 Eco-Power Inverter Washer: Unbalanced load notification Unb; appliance pauses spin ramp and attempts automatic load redistribution..

The primary root cause for Hoover code UNB is: On Hoover washers utilizing Eco-Power permanent magnet brushless motor, Power Care System premix injection, and hOn AI intelligence: Heavy single garment (jacket, bath sheet) clinging to drum wall, causing centrifugal mass imbalance..

To resolve error code UNB: Open door and rearrange wash items. Add one or two smaller towels to balance drum inertia during high-speed extraction. Rotate dial to Off, hold down Start/Pause and Spin Speed keys for 6 seconds until 'rES' appears on the digital readout, then power cycle.

Resetting power (unplugging for 5–10 minutes) clears temporary memory errors. However, if Hoover code UNB persists, the physical component causing On Hoover washers utilizing Eco-Power permanent magnet brushless motor, Power Care System premix injection, and hOn AI intelligence: Heavy single garment (jacket, bath sheet) clinging to drum wall, causing centrifugal mass imbalance. 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.