Question about Dyson DC07 Bagless Upright Cyclonic Vacuum

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Overheating Dyson DC07

The motor thermal protection keeps tripping after a few minutes.I have stripped and checked all the filters and tubes are clean but still keeps tripping .Any ideas ?.Graham

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  • Engineer10 Sep 03, 2007

    Yes , have done this and still cuts out after a few minutes.

  • manole Nov 26, 2007

    Yes, we have the same problem. I have removed the switch and replaced with new. this seemed to be the answer but again after about 5 minutes the machine cut out I'm not sure but it seems there must be a thermal cut out,Where is this on the mchine? Can you help ? Regards Brian

  • ticktockboom May 06, 2008

    Have tested and cleaned all filters and parts in various configurations.
    The problem is motor just runs hot from the effort of doing its job. With minimum attachments it holds out, but even a filter casing (empty of filter) is enough to cause it to run hot and result in a thermal trip out.

  • gachand Jul 20, 2008

    Yes my Dyson DC07 does the same thing. After 5-10 minutes it cuts out also even after cleaning out the filter. Has anyone found a good solution?

  • Anonymous Jul 23, 2008

    blowing fuses

  • Anonymous Nov 05, 2008

    my dyson also cuts out after 10-15 minutes of use. after down time of 5 minutes vaccuum works again for maybe 5 minutes. all filters are clean etc. took vaccuum to repair service and they ripped me for 100.00. still having same problem 6 months later. TIME TO BUY NEW ????

  • Anonymous Mar 16, 2014

    Dyson dc24 brush keeps tripping off and it is clean

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Many devices including this one have what's known as a thermal cut out.

It is there for obvious safety reasons and prevents the temperature in the locality of the cut out from exceeding a pre-defined value.
Some of them require you to press a reset button in order to switch the power back on and other types simply reconnect the electricity supply when the temperature returns to normal (safe) operating limits.
The Dyson DC07 has a thermal cut out located close to the motor and it is of the "self resetting" type.
If your vacuum cleaner switches off after a few minutes the most probable cause (there can be others) is the thermal cut out has operated.
The first and most important thing to do is to establish why it has operated.... If the airflow around the motor has become restricted then it will not be being sufficiently cooled and so it will have cut out correctly. However, thermal cut outs are often quite crude internally and it is not uncommon for them to start cutting out at too low a temperature. So...

Here's what to do...
(some tools may be required to complete the following so read the entire procedure before starting. Please note this is not an absolute guide if you need really foolproof step by step instructions... buy a manual! But this should help)

  • remove and thoroughly empty the dust bin (do not put it back yet)
  • remove and clean the drum filter to the right of the motor (right when looking at the front of the machine). (N.B. Never put this back if it is still damp)
  • remove the accessories from the upright section
  • withdraw the handle and separate it from the flexible hose (all of these and the following parts have a colored (commonly yellow) release tags/buttons/levers *** Never force anything!! ***
  • remove the flexible hose
  • remove the pipe union to the left of the motor
  • carefully lie the machine on its front (wheels uppermost) and remove the u-bend
Check all these parts for blockages/clogging before continuing...

There are now only two areas left that I know of which may cause further blockages. One is the "whole of life filter" located under the dust bin and the other one is inside each of those seven little cones (cyclonic chambers) at the top of the dust bin (root 8 cyclone is usually written on one of them). The following will require some tools and some common sense...
  • carefully prise the plastic disc up (the one under where the dust bin rests) use a flat bladed screwdriver or similar releasing it from the lug you can see at the front. Inspect the filter and replace if necessary (when replacing it you may find the original has been glued to the plastic lid - if so gently scrape it off )
  • If none of the above has revealed an obvious problem lets turn our attention to these pesky little cones... if you have ever vacuumed up any damp material these can become blocked. You will need a size 15 star drive (sometimes known as torx TX-15) screwdriver. I recommend you buy one with a shaft length of at least 70mm (you will need one this long if you are to access the thermal cut out later)
  • Place the bin assembly on a suitable dust sheet.. this can get messy!
  • remove the clear plastic outer bin
  • undo the three star drive screws at the top and partly withdraw the top ***careful*** you can not fully withdraw this piece. All we are doing here is creating a bit of limited access and "peer room" (before withdrawing the lid you may wish to peer underneath and for future reference note how the release rod is engaged).
  • now here you have to use a big dollop of care and common sense. By peering into these cones (shine a powerful torch through the sidewall of the cone) see if you can tell if any of them are blocked.
  • using a small piece of wire or similar gently poke any blockages away. Be careful not to damage the loose but still attached lid.
  • reassembly is a bit tricky because you have to re-engage the release rod at the bottom whilst at the same time pushing the lid back into position. Take care not to damage or trap the large rubber sealing ring as you press the lid home Finally replace the three screws being careful not to over tighten.
If none of this revealed anything very positive... Its time to open up and inspect the motor casing/thermal cut out.

**** WARNING**** The next section requires someone who is technically minded, has fiddly fingers patience and a basic understanding of typical plastic goods assembly techniques. As I am not including photo's the descriptions given can only be considered as pointers to how to do it (I'm not writing a Haynes manual here! So if you are a cak handed clot with little or no patience and a tendency to resort to ever bigger hammers - take the vacuum cleaner to an independent repair shop - explain the symptoms, tell them what you have done so far and leave it to them!!

  • In order to release the roller brush and belt mechanism turn the vacuum cleaner face down undo the three 1/4 turn screws and carefully withdraw the grey plastic cover (ease the belt guard section gently away)
  • coax the belt from the motor end then withdraw the belt and roller from its housing
  • Now we need to release the mains cable from the switch area to the motor housing - Undo the screw below the yellow switch
  • Working from the back prise the plastic housing forwards (this is tricky) leaving the switch in the on position can help but the main lugs stopping the housing from coming forwards are at the top just behind the big yellow switch button. the best way is to insert a fairly small flat bladed screwdriver in past the upper lugs at the back and put a slight outwards force on the housing tou are trying to remove... patience! Repeat for the other side
  • Now undo the electrical connections and release the flex from its channel so it is free to be withdrawn when you release the motor housing
  • turn the vacuum on to its front and remove the four torx drive motor housing securing screws (two of these are down a fairly deep recess)
  • carefully withdraw the complete motor assembly from the shell
  • The remaining part of the grey plastic casing can now be removed (a bit fiddly)
  • You should now have the complete motor assembly housed in a black plastic case with the grey intake at one end. Inspect this carefully and you will see that the grey intake is held in place with four lugs. gently prise the black plastic over these lugs and the grey intake will come away
  • Now you need to do two things in stages - pressing on the shiny metal motor shaft will push the motor out of the black casing but make sure that at the same time you feed the mains flex complete with rubber boot through the hole.
  • Voila the motor is now exposed
  • Inspect the motor for any signs of overheating or damage - check the brushes are OK (if you don't know what these are and you've got this far, now may be the time to ask a friend with a bit more knowhow to help!)
  • Unplug the electrical connections and undo the small Phillips screw holding the plastic assembly to the motor casing (this contains a capacitor and firmly pressed against the metal motor casing is the thermal cut out
  • If all else seems OK replace the thermal cut out with a new one and reassemble
  • No I'm not going to explain how to do that! For the most part just carefully reverse these instructions! - come on you've made it this far!!

NB. NEVER remove or bypass the cut out. this really could be very dangerous!

I hope this is of some help... Regards to all.


Posted on Sep 30, 2008

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Hi Graham. Remove waste bin unit from machine & run machine does it now cut out or run ok.

Posted on Sep 02, 2007

  • chris pursloe
    chris pursloe Sep 04, 2007

    1) Ok remove side filter & do test again.
    2) Does the motor slow down & pick up speed with a popping noise ?

    If after doing test 1) machine still cuts out then the problem lies at motor end of machine this could be warn carbon brushes, faulty thermal cut out, or motor breaking down.

    If after doing test 1) machine now runs ok purchase new premotor filter.

    If the motor is making strange noises & popping sounds remove post motor filter this is situated under the waste bin, look at filter has it got scorch marks on it if yes you will need a new motor.

    If its just black with carbon dust thats fine
    you are probably now looking at replacing carbon brushes or thermal cut out which is reletively simple job.

    Should you find that the problem lies with motor, brushes, thermal cut out I can supply spare parts & manuals that tell you how to strip machine down.
    contact me here dyson@gawab.com

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Dc 07 cut out when filtters not cleaned out and makes motercut but but when keep using itit puts lots of strain on the moter the thermal cut out is on the moter

Posted on Nov 27, 2008

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2 Answers

Periodically my Dyson DC07 stops operating, and then will resume operating after about a 10 minute wait period. Is there a thermal switch or "cutout" if the motor is overheating?


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).

Feb 10, 2015 | Dyson DC07 Bagless Upright Cyclonic Vacuum

3 Answers

Is it possible to overheat the motor?


This can happen , normally if the filters are kept clean and replaced now and again the motor should last quite a few years if it does overheat then it has a thermal cut off that resets after it cools down ,,Hope this is of some help

Feb 22, 2011 | Dyson DC07 Animal Bagless Upright Cyclonic...

1 Answer

Electrical supply cuts out after a few minutes use


Sounds like the motor is overheating and cutting out. The motor has a protection device that automatically resets when the motor cools down.
The most common cause of overeating is blocked or dirty filters. Don't be fooled by Dyson's "lifetime filters". They need to be cleaned and/or replaced regularly.
If after cleaning/renewing filters it still does it, you need a new motor as the trip device is not available separately. New motors can be found on eBay quite cheaply but it requires some special tools and good DIY skills to do it. Have a look at www.dysonmedic.com to see if you you think you can do it, but if not it's time to call a repair shop or the Dyson helpline.

Oct 29, 2010 | Dyson DC07 Animal Bagless Upright Cyclonic...

1 Answer

My DCO7 keeps cutting out, all filters are clean, it was my mother ln laws she gave it to me, I thought I could solve the problem, there is no suction from the hose, I am now frustrated. Regards steven...


The electric motor inside your Dyson has a built in over-current trip to protect itself (and you if it seriously overheated and caught fire). This normally automatically resets itself, however if the motor has just about had it, next time it is switched on it just trips again.

The primary cause of motors overheating is that the filters are not cleaned or replaced frequently enough. Dont be fooled by Dyson's "lifetime filters". They need to be regularly cleaned and replaced when necessary.

Replacement motors are available on eBay for about £25, however replacing one requires good DIY skills and tools.

Have a look at www.dysonmedic.com and see if you feel you can tackle it yourself. If not, take it to a repair shop or call the Dyson helpline.

Sep 30, 2010 | Dyson DC07 Bagless Upright Cyclonic Vacuum

1 Answer

Hi, how do I replace the fuse in the dyson dc7?


Other than the fuse in the plug, there is no fuse on a DC07. However, the motor does have a built in over-current trip to protect itself (and you if it seriously overheated and caught fire). This normally automatically resets itself, however if the motor has just about had it, the moment it is switched on, it just trips again.
It cannot be reset manually.

The primary cause of motors overheating is that the filters are not cleaned or replaced frequently enough. Dont be fooled by Dyson's "lifetime filters". They need to be regularly cleaned and replaced when necessary.

Replacement motors are available on eBay for about £25, however replacing one requires good DIY skills and tools.

Have a look at www.dysonmedic.com and see if you feel you can tackle it yourself. If not, take it to a repair shop or call the Dyson helpline.

Jun 12, 2010 | Dyson DC07 Bagless Upright Cyclonic Vacuum

1 Answer

After using the unit for a few minutes it cuts off.


The electric motor inside your Dyson has a built in over-current trip to protect itself (and you if it seriously overheated and caught fire). This normally automatically resets itself, however if the motor has just about had it, next time it is switched on it just trips again.

The primary cause of motors overheating is that the filters are not cleaned or replaced frequently enough. Dont be fooled by Dyson's "lifetime filters". They need to be regularly cleaned and replaced when necessary.

Replacement motors are available on eBay for about £25, however replacing one requires good DIY skills and tools.

Have a look at www.dysonmedic.com and see if you feel you can tackle it yourself. If not, take it to a repair shop or call the Dyson helpline.

Apr 17, 2010 | Dyson DC07 Bagless Upright Cyclonic Vacuum

2 Answers

DOES A DYSON HAVE AN AUTOMATIC SHUT OFF VALVE


The motor has a built in over-current trip to protect itself (and you if it seriously overheated and caught fire). This normally automatically resets itself, however if the motor has just about had it, the moment it is switched on, it just trips again.
It cannot be reset manually.

The primary cause of motors overheating is that the filters are not cleaned or replaced frequently enough. Dont be fooled by Dyson's "lifetime filters". They need to be regularly cleaned and replaced when necessary.

Replacement motors are available on eBay for about £25, however replacing one requires good DIY skills and tools.

Have a look at www.dysonmedic.com and see if you feel you can tackle it yourself. If not, take it to a repair shop or call the Dyson helpline.

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The electric motor inside your Dyson has a built in over-current trip to protect itself (and you if it seriously overheated and caught fire). This normally automatically resets itself, however if the motor has just about had it, next time it is switched on it just trips again.

The primary cause of motors overheating is that the filters are not cleaned or replaced frequently enough. Dont be fooled by Dyson's "lifetime filters". They need to be regularly cleaned and replaced when necessary.

Replacement motors are available on eBay for about £25, however replacing one requires good DIY skills and tools.

Have a look at www.dysonmedic.com and see if you feel you can tackle it yourself. If not, take it to a repair shop or call the Dyson helpline.

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Dyson DC07. Problem:- switch the hoover on and it cuts out after approximately 1 second. Any ideas please?


The motor has a built in over-current trip to protect itself (and you if it seriously overheated and caught fire). This normally automatically resets itself, however if the motor has just about had it, the moment it is switched on, it just trips again.

The primary cause of motors overheating is that the filters are not cleaned or replaced frequently enough. Dont be fooled by Dyson's "lifetime filters". They need to be regularly cleaned and replaced when necessary.

Replacement motors are avaible on eBay for about £25, however repalcing one requires good DIY skills and tools.

Have a look at www.dysonmedic.com and see if you feel you can tackle it yourself. If not, take it to a repair shop or call the Dyson helpline.

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1 Answer

Moter cuts out after a few minutes


The motors have a "trip" to protect them, and you if a serious problem caused a fire, which can be tripped if the filters are blocked and causing the motor to overheat.
The filter at the top of the cyclone (the bit on top of the dust container) should be cleaned regularly (more often than Dyson suggest), and under the dust container you may not have noticed there is another filter - called the post motor filter. This isn't mentioned in the user book but does get clogged after a few years of use. It can be removed and can be replaced - eBay has companies that can help.
If all filters are clean and okay, it is probably the early stages of complete motor failure. If you're good at DIY, the site www.dysonmedic.com has some good info on how to change a motor. Again, eBay will help find a motor.
If you dont fancy having a go, either ring Dyson or a local vacuum repair company.

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