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This is a sure sign of a blockage. The motor cuts out because it gets too hot and will start again when it has cooled. Follow the instructions in your user manual for clearing blockages (you can download a copy from the Dyson website if necessary). Make sure the washable filter is clean too (and completely dry before you use it).
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Most Dyson cleaners have a thermal cut-out to protect
the motor from overheating in the event of a restriction to the airflow. So, if anything causes it to overheat, it will
switch off. If this happens, leave the cleaner switched off for at least two
hours, as it will not start again until it has cooled down. The most common cause of a
cut-out is that the cleaner has a blockage or the filter needs washing.A high room temperature may also trigger
it.Before you continue vacuuming,
ensure the filter is clean and there are no blockages.You can download the user guide at www.dyson.co.uk/support/.Just click on ‘Get Expert Help’ then ‘Using my Dyson product’ then ‘User Guide’.
The TOC(thermal overload cutout) on the motor is getting too hot - thats why it keeps shutting off and starting again once its cooled, so make sure your filters are clean and they are no blockages in the hose or the brushbar compartment or any where else
Which dyson is it?
It is probably a thermal cut-off which is caused by a blockage. The machine will turn itself off before it overheats if it is a thermal cut-off. Once it has cooled down, you will be able to turn it back on again (usually 30 mins - 1 hour).
If the machine doesn't turn on at all anymore, you may need to replace the power switch. Call the Dyson helpline, they will do a blockage troubleshoot and if it's not that, they will tell you where you can find an authorized Dyson repair dealer in your area.
cut out switch on the motor needs replacing this overheats and cuts of the motor when the motor cools down it will start again you have to keep both filters and cyclone clean and free of dust or after replacement the same will happen again
the automatic cut out switch on the motor needs replacing when the motor gets hot this switch comes in and stops the motor from overheating when the motor cools down the cleaner will work again and cut out again when the motor gets hot if it is not replaced it will eventually burn the motor out after the switch has been replaced both the filter and cyclone need to be cleaned on a regular basis or the same will happen again