Dyson DC35 Animal (purple) stops after a few seconds and makes a funny noise

From miscellus

Dyson DC 35 Animal hand-held vacuum cleaner
Dust collector unit, showing socket for butterfly action switch
Butterfly valve fully open
Butterfly valve jammed shut

Our Dyson DC35 Animal hand-held vacuum cleaner (the purple one) developed a strange fault recently. After a few seconds use it would cut out. it would also make a strange noise as it vacuumed, probably some in-built 'alarm' system to indicate a blocked vacuum feed.

The fault

The fault turned out to be a jammed butterfly valve on the dust collector (the part that the extension tubes clip on to). The purpose of the butterfly valve is probably to stop dust falling out as the cleaner is inverted. It should be completely free moving but on ours it was jammed shut with dust. The valve has a switch on it, see the socket that connects the switch to the cleaner. The cleaner has some logic to turn off it the switch is closed.

The solution

Just remove the plastic dust collector and run hot water through the valve, maybe help it a little with an old toothbrush.

Ensure the butterfly valve moved with complete freedom.

Ensure the dust collector is completely dry before re-assembling. Placing it a warm (not hot) place will aid this.


If you are not able to dismantle this unit into its component pieces, you should probably not be undertaking a repair of this type, simple though it may be.

The user guide shows how to dismantle this cleaner


This fault probably also applies to the DC34 but I don't have access to one in order to check this.

See also