OEM VERIFIED BENCH

OFFICIAL FAULT CODEUnb

Candy // OFFICIAL DIAGNOSTIC BENCH

Candy Unb

Washing MachineDrive Motor, Inverter & Tachometer Sensor

Washing Machine

Other Brands Sharing Code Unb:HaierUNB HooverUNB HisenseUNB RosieresUNB GEUNB IbernaUNB ZerowattUNB

Symptom / Description

FAULT

Candy RapidÓ / Smart Pro / GrandÓ Vita Inverter Washer: Unbalanced load notification Unb; appliance pauses spin ramp and attempts automatic load redistribution.

TELEMETRY // LIVESIG: FAULT_DETECTED

Root Cause

ROOT CAUSE

On Candy washers utilizing Speed-Drive Inverter brushless motor, Smart Touch NFC / hOn Wi-Fi connectivity, and GIAS Cuore electronic platform: Heavy single garment (jacket, bath sheet) clinging to drum wall, causing centrifugal mass imbalance.

CIRCUIT // SUBSYSTEMLOGIC: ROOT_ISOLATED

Repair Instructions

UNLOCKED

1Open door and rearrange wash items. Add one or two smaller towels to balance drum inertia during high-speed extraction. Turn dial to Off, press and hold Start/Pause and Extra Rinse simultaneously for 5 seconds until display flashes '888', then power cycle.

AI diagnostic workshop engine analyzing appliance circuit schematics and error telemetry in real time

AI WORKSHOP PROTOCOL ENGINE

Direct extraction from OEM factory manuals & wiring schematics

Field Actions

DISPATCH

Need Help? Call a Certified Technician Worldwide Candy Parts Finder

Electrical & Safety Protocol

Always disconnect appliance from 230V/400V mains before opening panels. Use CAT III multimeter for circuit testing.

CALIBRATED BENCH PROTOCOL // CAT III 600V

Workshop Verification & Safety Checklist

WORKSHOP VERIFICATION PROTOCOLDrive Motor, Inverter & Tachometer SensorWashing Machine

2. Multimeter & Electrical Bench Tests (Ω)

MODE: OHMMETER (Ω)AUTO-RANGE

Precision digital multimeter probes measuring electrical resistance in Ohms on an appliance control board

CALIBRATED METROLOGY RESISTANCE BENCH (CAT III)

Nominal Resistance (Ω)

3Ω–6Ω (BLDC phase U-V-W) / 60Ω–180Ω (Tacho coil) / 1.5Ω–3.5Ω (Universal stator)NOMINAL

0 Ω (SHORT)CALIBRATED BAND∞ OL (OPEN)

▲ NOMINAL OPERATING WINDOW

Target Component:3-Phase Motor Windings / Tacho Generator / Carbon Brushes

Test Pins & Connections

PROBE (+)

PROBE (-)

Across phase pins U-V, V-W, U-W on motor harness; across tacho pins

Tolerance & Diagnostic CriteriaBLDC phase winding values must be strictly balanced within ±0.3Ω. Hand rotation generates 1V–4V AC on tacho.

1. Pre-Intervention Electrical Safety Protocols

!High-Voltage Safety Protocol & DC Bus: Wait at least 5 minutes after power cutoff to allow inverter DC bus capacitors (380V DC) to bleed down.
!Verify 0V DC across inverter filter capacitors before unplugging motor harness connectors.
!Keep hands clear of drive belt and pulleys during any manual rotation tng.

3. Preliminary Mechanical & Visual Checks

Slip off drive belt and spin drum/motor shaft by hand to check for roaring or seized ball bearings.
For universal motors: verify carbon brushes have at least 10mm remaining length and smooth contact faces.
Inspect motor suspension rubber mounts and drive belt tension/groove profile.

Perform these diagnostic steps before triggering AI Deep Search or replacing boards.Certified Workshop Routine

Frequently Asked Questions: Candy UNB

FAQ TREE

What does error code UNB mean on a Candy appliance?

Candy error code UNB indicates: Candy RapidÓ / Smart Pro / GrandÓ Vita Inverter Washer: Unbalanced load notification Unb; appliance pauses spin ramp and attempts automatic load redistribution..

What is the root cause of Candy error code UNB?

The primary root cause for Candy code UNB is: On Candy washers utilizing Speed-Drive Inverter brushless motor, Smart Touch NFC / hOn Wi-Fi connectivity, and GIAS Cuore electronic platform: Heavy single garment (jacket, bath sheet) clinging to drum wall, causing centrifugal mass imbalance..

How do I fix or resolve Candy error code UNB?

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. Turn dial to Off, press and hold Start/Pause and Extra Rinse simultaneously for 5 seconds until display flashes '888', then power cycle.

Is it safe to clear Candy error code UNB by resetting power?

Resetting power (unplugging for 5–10 minutes) clears temporary memory errors. However, if Candy code UNB persists, the physical component causing On Candy washers utilizing Speed-Drive Inverter brushless motor, Smart Touch NFC / hOn Wi-Fi connectivity, and GIAS Cuore electronic platform: Heavy single garment (jacket, bath sheet) clinging to drum wall, causing centrifugal mass imbalance. must be inspected or replaced.

How do I test electrical resistance for Candy code UNB using a multimeter?

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..

What safety protocol must be followed before servicing Candy code UNB?

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.

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COMMUNITY

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OEM VERIFIED BENCH

OFFICIAL FAULT CODEUnb

Candy // OFFICIAL DIAGNOSTIC BENCH

Candy Unb

Washing MachineDrive Motor, Inverter & Tachometer Sensor

Washing Machine

Other Brands Sharing Code Unb:HaierUNB HooverUNB HisenseUNB RosieresUNB GEUNB IbernaUNB ZerowattUNB

Symptom / Description

FAULT

Candy RapidÓ / Smart Pro / GrandÓ Vita Inverter Washer: Unbalanced load notification Unb; appliance pauses spin ramp and attempts automatic load redistribution.

TELEMETRY // LIVESIG: FAULT_DETECTED

Root Cause

ROOT CAUSE

CIRCUIT // SUBSYSTEMLOGIC: ROOT_ISOLATED

Repair Instructions

UNLOCKED

AI WORKSHOP PROTOCOL ENGINE

Direct extraction from OEM factory manuals & wiring schematics

Field Actions

DISPATCH

Need Help? Call a Certified Technician Worldwide Candy Parts Finder

Electrical & Safety Protocol

Always disconnect appliance from 230V/400V mains before opening panels. Use CAT III multimeter for circuit testing.

CALIBRATED BENCH PROTOCOL // CAT III 600V

Workshop Verification & Safety Checklist

WORKSHOP VERIFICATION PROTOCOLDrive Motor, Inverter & Tachometer SensorWashing Machine

2. Multimeter & Electrical Bench Tests (Ω)

MODE: OHMMETER (Ω)AUTO-RANGE

CALIBRATED METROLOGY RESISTANCE BENCH (CAT III)

Nominal Resistance (Ω)

3Ω–6Ω (BLDC phase U-V-W) / 60Ω–180Ω (Tacho coil) / 1.5Ω–3.5Ω (Universal stator)NOMINAL

0 Ω (SHORT)CALIBRATED BAND∞ OL (OPEN)

▲ NOMINAL OPERATING WINDOW

Target Component:3-Phase Motor Windings / Tacho Generator / Carbon Brushes

Test Pins & Connections

PROBE (+)

PROBE (-)

Across phase pins U-V, V-W, U-W on motor harness; across tacho pins

Tolerance & Diagnostic CriteriaBLDC phase winding values must be strictly balanced within ±0.3Ω. Hand rotation generates 1V–4V AC on tacho.

1. Pre-Intervention Electrical Safety Protocols

!High-Voltage Safety Protocol & DC Bus: Wait at least 5 minutes after power cutoff to allow inverter DC bus capacitors (380V DC) to bleed down.
!Verify 0V DC across inverter filter capacitors before unplugging motor harness connectors.
!Keep hands clear of drive belt and pulleys during any manual rotation tng.

3. Preliminary Mechanical & Visual Checks

Slip off drive belt and spin drum/motor shaft by hand to check for roaring or seized ball bearings.
For universal motors: verify carbon brushes have at least 10mm remaining length and smooth contact faces.
Inspect motor suspension rubber mounts and drive belt tension/groove profile.

Perform these diagnostic steps before triggering AI Deep Search or replacing boards.Certified Workshop Routine

Frequently Asked Questions: Candy UNB

FAQ TREE

What does error code UNB mean on a Candy appliance?

Candy error code UNB indicates: Candy RapidÓ / Smart Pro / GrandÓ Vita Inverter Washer: Unbalanced load notification Unb; appliance pauses spin ramp and attempts automatic load redistribution..

What is the root cause of Candy error code UNB?

How do I fix or resolve Candy error code UNB?

Is it safe to clear Candy error code UNB by resetting power?

How do I test electrical resistance for Candy code UNB using a multimeter?

What safety protocol must be followed before servicing Candy code UNB?

Community Verification

COMMUNITY

Did this solution resolve the issue?

Candy Unb

Symptom / Description

Root Cause

Repair Instructions

Field Actions

Workshop Verification & Safety Checklist

Frequently Asked Questions: Candy UNB

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Candy Unb

Symptom / Description

Root Cause

Repair Instructions

Field Actions

Workshop Verification & Safety Checklist

Frequently Asked Questions: Candy UNB

Community Verification

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