error-4 Troubleshooting

Main brush error on the Mova X40

Source: ProductDB robot-vacuum seed Confidence: 85% Verified Aug 8, 2026

The robot stops or reports the main brush is stuck. Hair or debris is likely wrapped around the roller.

How to fix Main brush error

Clear the main brush

Remove the main brush guard and clear hair or debris wrapped around the roller.

Source: ProductDB robot-vacuum seed Confidence: 80% Verified Aug 8, 2026
Difficulty: ★ Est. 5 min

Replace the main brush

If the roller is worn or damaged, replace it with a genuine part.

Source: ProductDB robot-vacuum seed Confidence: 80% Verified Aug 8, 2026
Difficulty: ★★ Est. 10 min

Replacement parts for the Mova X40

Mova X40 Water tank filter Mova X40 Battery Mova X40 Dust bag Mova X40 Dock filter Mova X40 HEPA filter Mova X40 Dock base pad Mova X40 Drive wheels Mova P10 Pro Ultra Filter Mova P10 Pro Ultra Left side brush Mova P10 Pro Ultra Right side brush Mova P10 Pro Ultra Main brush roller Mova P10 Pro Ultra Side brush set Mova P10 Pro Ultra Mop pad Mova P10 Pro Ultra Mop pad (4-pack) Mova P10 Pro Ultra Battery Mova M80 Filter Mova M80 Left side brush Mova M80 Right side brush Mova M80 Main brush roller Mova M80 Side brush set Mova M80 Mop pad Mova M80 Mop pad (4-pack) Mova M80 Battery Mova X20 Filter Mova X20 Left side brush Mova X20 Right side brush Mova X20 Main brush roller Mova X20 Side brush set Mova X20 Mop pad Mova X20 Mop pad (4-pack) Mova X20 Battery Mova L50 Filter Mova L50 Left side brush Mova L50 Right side brush Mova L50 Main brush roller Mova L50 Side brush set Mova L50 Mop pad Mova L50 Mop pad (4-pack) Mova L50 Battery Mova X40 Filter Mova X40 Left side brush Mova X40 Right side brush Mova X40 Main brush roller Mova X40 Brush guard Mova X40 Side brush set Mova X40 Cable organizer Mova X40 Cleaning tool Mova X40 Charging cable Mova X40 Remote control Mova X40 Floor cleaning solution Mova X40 Mop pad Mova X40 Mop pad (4-pack)

← All Mova X40 error codes

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