Motor revs up down

Hi there, it's Jack at Dyson.

Like most Dyson vacuums, DC07 is equipped with a thermostat which shuts the machine down for protection if it starts to overheat. This will often be due to a blockage, and the pre-filter may also be overdue for a wash.

The machine will reset automatically after it's been allowed to cool down, but to prevent this from happening again there are a few simple check you can try: http://www.dyson.co.uk/support/dc07/dc07-standard/my-machine-is-not-working/machine-won-t-switch-on-or-cuts-out/my-machine-cut-out-whilst-i-was-using-it/how-to-wash-filters/wand-suction

We recommend washing the filter at least once every 3-6 months, using cold water without detergent. Allow the filter to dry completely before replacing it - this may take at least 12 hours.


Removing any blockages and washing the filter thoroughly should resolve the issue. However, if your machine continues to shut off after you've tried both of these steps please get in touch with us directly so we can talk you through some additional troubleshooting checks. You can reach us by calling 0800 298 0298 (UK), 1-866-693-9766 (US), 1-877-397-6622 (CA) or 1800 239 766 (AU).

short in motor???repair shop!

Hi there, it's Jack at Dyson.

DC33 doesn't include a reset button. The motor is equipped with a thermal cutout sensor, which will shut the machine down for protection if something causes it to overheat. This will reset itself automatically once it's been allowed to cool down for at least three hours.

To prevent this from reoccurring we'd recommend washing both filters in cold water without detergent, and checking the machine for blockages. Our online Support guide will walk you through each step: http://www.dyson.co.uk/support/dc33/dc33-multi-floor/my-machine-is-not-working/machine-won-t-switch-on-or-cuts-out/thermal-cut-out

If you'd like some further advice from our experts after giving this a try, please call us on 0800 298 0298 (UK), 1-866-693-9766 (US), 1-877-397-6622 (CA) or 1800 239 766 (AU).

If you attach a picture of the scrubber, and give the model number, I can help. I retired from repairing these floor machines after 30 years. I like Clarke machines.

Hi Steve,

Your DC04 is equipped with a safety device which shuts down the machine if it starts to overheat. This can be due to a blockage, or because the filter needs a wash. You should find the machine will restart after cooling down for about an hour, but to ensure this doesn't happen again, please follow the steps shown in our online support guide to locate and remove any blockages from the cleaner:

http://www.dyson.co.uk/support/help.asp?article=89&product=DC04-SY-STD-BC

In normal use, the filter should be washed at least once every 3-6 months, as shown in the video below. Use cold water without detergent, and allow at least 12 hours for the filter to dry completely before replacing it.

This should resolve the issue, but if the machine won't restart, or if it continues to cut out in use, please get in touch with us directly so we can help. You can call free on 0800 298 0298 - our Helpline is available from 7am until 10pm, 7 days a week.

Kind regards,

Jack
Dyson Online Customer Support

The cutting out is, in a way, a good thing. Most vaccuum cleaners have a thremal cutout, so if the cleaner overheats it cuts out until a safe temperature is reached to save the motor from damage.

The question here is why is the motor overheating. There are only 2 possibilities:

1: The motor its self is failing and windings in the motor are burning out, causing the overheat. If this is happening, then the overheat will probably be accompanied by much louder noise from the motor that you are used to and possibly the smell of burning emectrical equipment. If this is happening then you should stop using the cleaner right away. Generally the cost of a replacement motor (Unless the appliance is under warranty of course) is more than the residual value of the vaccuum cleaner.

2: The motor is overheating because it is being overstrained. Possible causes for this are:
Dust filters on the machine are clogged (Bagless machines typically have at least 2 filters, one on the exit airflow from the motor and another somewhere around the top of the cylinder. In a Dyson for instance, there is a foam filter in a clip open housing directly above the dust container.

Clean, wash or replace the filters as per the manufacturer's instructions.
If it has a bag, then the pores of the bag may be blocked - swap out the bag.
If it is an upright with a brush, ensure that the brush is turning freely
Ensure that all pipes are free from obstructions, pay particular attention on upright cleaners, to the pipe that leads from the beater brush housing to the waste dust collection

If no burning or smelling, maybe nothing to do with motor, and if caused by the safety cut-out, it will need about an hour to cool down, and then check filter, bag, and drop coin through hose, pipes and the floor tool, to check for blockages and to stop it running hot. Damaged cable, worn carbon brushes, broken electrical rewind electrical contacts or even the printed circuit board (later models) are the most likely causes.

Return if still under warranty/ Could be motor...

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