Live Support Skip navigation
Thanks. We've saved your preferences.
You can update your contact preferences at any time in the Keep in touch section of Your Dyson. If you have a Your Dyson account, you can log in below to manage your contact options.

Dyson DC04 Constant MAX vacuum

Let's get your machine working.

See all steps

Please select the appropriate option

Turn off and unplug the machine before proceeding.

Check the brushbar

Tilt the machine into vacuuming position.

Recline the machine and place it on its back so that you have access to the brushbar.

Remove the soleplate by turning the 3 fasteners by a quarter. A coin is best used.

Remove blockages as necessary.

Spin the brushbar and check for any damage.

Has checking the brush bar resolved the problem?

We're glad the problem's been solved.

Please let us know if there's anything else we can help you with.

How would you rate our online support?

1/5 Poor

2/5 Average

3/5 Good

4/5 Very Good

5/5 Excellent

Dyson machines are built to last. However, since December 2014 we have unfortunately no longer been able to supply spare parts, or carry out service or repairs for DC03, DC04 or DC05 machines.

Apologies. We can't help you online.

But our Customer Support Team will be able to solve your problem. Call us on 0800-298-0298

How would you rate our online support?

1/5 Poor

2/5 Average

3/5 Good

4/5 Very Good

5/5 Excellent

Air may be escaping because of a missing seal or blockage.

Test the suction

Make sure the machine is standing in the upright position.

Pull back the wand cap.

Turn the machine on and place your hand on the end of the wand.

Is the suction strong or weaker than normal?

Does the machine stand upright?

Keep your hands and clothing away from the brush bar area at all times.

Check the brushbar

Tilt the machine back into the vacuuming position.

Lay the machine on its side, keeping it in the vacuuming position.

  • Turn the machine on and check to see if the brushbar is spinning.

Does the brushbar turn with the power on?

Airway inspection checks

Remove the valve pipe, near to the base of the machine.

Check for blockages:

  • Check the valve pipe for blockages and remove if necessary.
  • Check the seal on the valve pipe for any damage.
  • Check the seal on the machine for any damage.

Plug the machine in and switch on. Place your hand over the airway inspection and test the suction.

Is the suction strong or weaker than usual?

Turn off and unplug the machine before proceeding.

Check the cleaner head

Turn off power, lay the machine flat on the floor and turn over so that the base can be viewed.

Using a coin, turn each fastener by a quarter. Remove the soleplate.

Check for blockages

Carefully remove any blockages from the brushbar using a pair of scissors to cut away any hair and fibres from the brushbar if necessary.

Inspect the internal hose for blockages or and damage.

  • Both ends of the internal hose pull away. If the internal hose is split choose 'part broken'.
  • When refitting, push firmly to connect and ensure that both ends of the hose are fitted securely.

Re-assemble and test machine.

Has checking the cleaner head resolved the problem?

Dyson machines are built to last. However, since December 2014 we have unfortunately no longer been able to supply spare parts, or carry out service or repairs for DC03, DC04 or DC05 machines.

Apologies. We can't help you online.

But our Customer Support Team will be able to solve your problem. Call us on 0800-298-0298

How would you rate our online support?

1/5 Poor

2/5 Average

3/5 Good

4/5 Very Good

5/5 Excellent

Check duct, bin and cyclone

Turn the machine off and remove the cyclone and bin assembly.

Check duct inlets

Check the entry seal located on the left side of the duct is not missing or damaged.

Check the entry pipe and exhuast pipe on the main duct for any blockages and remove as necessary.

Check the bin and cyclone

Check the cyclone entry seal is not missing or damaged.

Check both entry inlets on the clear bin and cyclone for blockages and remove as necessary.

Open the bin lid by pressing the release catch.

Clean the bin, ensuring the cone seal is attached and not damaged.

Clean cyclone shroud as necassary and check the cyclone seal is not missing or damaged.

Re-assemble and test machine.

Has checking the duct, bin and cyclone resolved the problem?

The post-motor filter located under the clear bin should last the lifetime of the machine and does not need to be washed.

Washing the filter

Please follow the steps in the video to wash the filter.

For a step by step guide, please select Step by step.

Has washing the filter resolved the problem?

Dyson machines are built to last. However, since December 2014 we have unfortunately no longer been able to supply spare parts, or carry out service or repairs for DC03, DC04 or DC05 machines.

Apologies. We can't help you online.

But our Customer Support Team will be able to solve your problem. Call us on 0800-298-0298

How would you rate our online support?

1/5 Poor

2/5 Average

3/5 Good

4/5 Very Good

5/5 Excellent

Washing the filter

Remove the clear bin and cyclone top from your machine.

Press the filter release catch to remove the pre-motor filter and filter casing.

Wash the filter in cold water only.

WARNING: Please do not use detergent, do not wash in a dishwasher or washing machine.

Repeat the steps shown below until the water runs clear.

Continue to wash the filter.

Leave the filter to dry in a warm place for 12 hours.

WARNING: Do not dry the filter in a tumble dryer, microwave, oven or near a naked flame.

Replace the filter into the filter casing and then replace into the cyclone top.

Has washing the filter resolved the problem?

Check duct, bin and cyclone

Turn the machine off and remove the cyclone and bin assembly.

Check duct inlets

Check the entry seal located on the left side of the duct is not missing or damaged.

Check the entry pipe and exhuast pipe on the main duct for any blockages and remove as necessary.

Check the bin and cyclone

Check the cyclone entry seal is not missing or damaged.

Check both entry inlets on the clear bin and cyclone for blockages and remove as necessary.

Open the bin lid by pressing the release catch.

Clean the bin, ensuring the cone seal is attached and not damaged.

Clean cyclone shroud as necassary and check the cyclone seal is not missing or damaged.

Re-assemble and test machine.

Has checking the duct, bin and cyclone resolved the problem?

Turn off and unplug the machine before proceeding.

Checking the upright lock

Recline the machine and stand behind.

On the right side, by the back wheel you will find the valve pipe carriage.

  • Check the valve pipe is clear of blockages by pressing the push button to remove it from the valve carriage.

Lock the valve carriage into place by pressing the large push button in front (visible when reclined).

Re-test machine.

Has checking the upright lock resolved the problem?

Airway inspection checks

Remove the valve pipe, near to the base of the machine.

Check for blockages

  • Check the valve pipe for blockages and remove if necessary.
  • Check the seal on the valve pipe for any damage.
  • Check the seal on the machine for any damage.

Plug the machine in and switch on. Place your hand over the airway inspection and test the suction.

Is the suction strong or weaker than usual?

Checking the hose

Please re-fit the valve pipe before continuing.

Disconnect the wand from the hose. Stretch out the hose and check for any splits. If the hose is damaged choose 'part broken'

Plug the machine in and switch it on. Place your hand over the end of the hose and test the suction.

Is the suction from the hose strong or weaker than usual?

Checking the wand

Look through the wand. You should see light shining through. If not remove the blockage.

Connect the wand to the hose and test the machine.

Has checking the wand resolved the problem?

Check duct, bin and cyclone

Turn the machine off and remove the cyclone and bin assembly.

Check the duct

Check the entry seal located on the left side of the duct is not missing or damaged.

Check the entry pipe and exhuast pipe on the main duct for any blockages and remove as necessary.

Check the bin and cyclone

Check the cyclone entry seal is not missing or damaged.

Check both entry inlets on the clear bin and cyclone for blockages and remove as necessary.

Open the bin lid being careful to ensure dust is captured.

Release the clear bin by pressing the bin release catch on the front of the cyclone.

Clean cyclone shroud as necessary and check the cyclone seal is not missing or damaged.

If any parts are missing or damaged select 'part broken'.

Re-assemble and test machine.

Has checking the duct, bin and cyclone resolved the problem?

Checking the U-bend and hose

Tilt the machine forward and unclip the u-bend airway inspection which is located at the base of the hose.

  • Check for blockages and remove as necessary. If the u-bend is missing or damaged choose 'part broken'.

Remove the hose

Pull the hose from the back of the duct.

Check the hose at both end for blockages and remove as necessary.

Reassemble

Reconnect the hose, ensuring it clicks into place and is secure.

Reconnect the u-bend, ensuring it clicks into place.

Retest the machine.

Has checking the hose and u-bend resolved the problem?

Check duct, bin and cyclone

Turn the machine off and remove the cyclone and bin assembly.

Check the duct

Check the entry seal located on the left side of the duct is not missing or damaged.

Check the entry pipe and exhuast pipe on the main duct for any blockages and remove as necessary.

Check the bin and cyclone

Check the cyclone entry seal is not missing or damaged.

Check both entry inlets on the clear bin and cyclone for blockages and remove as necessary.

Open the bin lid being careful to ensure dust is captured.

Release the clear bin by pressing the bin release catch on the front of the cyclone.

Clean cyclone shroud as necassary and check the cyclone seal is not missing or damaged.

If the seals are missing or damaged select 'part broken'.

Re-assemble and test machine.

Has checking the duct, bin and cyclone resolved the problem?

Make sure the machine is standing in the upright position.

Test the wand

Pull back the wand cap.

Turn the machine on and place your hand on the end of the wand.

Is the suction strong or weaker than usual?

When did the machine last have power?

Check electrical supply

Is the power cord or plug damaged?

Are the other household appliances working?

Does the vacuum work when plugged into another socket?

Change the (13 amp) fuse.

Has checking the electrics resolved the problem?

Thermal cut out

Most Dyson vacuum have a built in safety system that stops the machine if it begins to overheat. This usually happens because the filters need washing or your machine is blocked.

Carry out the performance checks, and if your machine cuts out unplug and leave for at least 2 hours to cool down.

If the customer prefers to check the machine when the power has returned, wait for a minimum of 2 hours and ask them to call back.

The post-motor filter located under the clear bin should last the lifetime of the machine and does not need to be washed.

Washing the filter

Please follow the steps in the video to wash the filter.

For a step by step guide, please select Step by step.

Is there anything else we can help you with?

Please select the appropriate option

We're glad the problem's been solved.

Please let us know if there's anything else we can help you with.

How would you rate our online support?

1/5 Poor

2/5 Average

3/5 Good

4/5 Very Good

5/5 Excellent

Dyson machines are built to last. However, since December 2014 we have unfortunately no longer been able to supply spare parts, or carry out service or repairs for DC03, DC04 or DC05 machines.

Apologies. We can't help you online.

But our Customer Support Team will be able to solve your problem. Call us on 0800-298-0298

How would you rate our online support?

1/5 Poor

2/5 Average

3/5 Good

4/5 Very Good

5/5 Excellent

Turn off and unplug the machine before proceeding.

Check the brushbar

Tilt the machine into vacuuming position.

Recline the machine and place it on its back so that you have access to the brushbar.

Remove the soleplate by turning the 3 fasteners by a quarter. A coin is best used.

Remove blockages as necessary.

Spin the brushbar and check for any damage.

    • If there is any damage to the brushbar or belt choose the relevant option.
    • If your belt has snapped and you have s spare belt choose 'how to replace the belt'.

Has checking the brushbar resolved the problem?

Turn off and unplug the machine before proceeding.

Replacing the belt

Remove the soleplate by turning the fastener by a quarter. A coin is best used.

Pull out brush bar ensuring no damage and remove belt debris.

Attach the new belt to the brushbar and feed through the brush bar housing.

Refit the brushbar and make sure the end caps are correctly in place.

Attaching the belt to the motor pin:

  • Loop the belt around your thumb.
  • Using the back of the cleaner as a lever, stretch the belt over the motor spindle and release.
  • Ensure that the belt is free of twists.
  • Important: Rotate the brushbar several times to centralise belt onto the motor spindle.

Re-assemble the soleplate:

  • The three soleplate tabs need to be located inside the bumper strip before the soleplate can be pivoted into position.
  • Replace the soleplate and fasten the three soleplate fasteners with a coin.
  • Make sure the soleplate is fitted flush against the brush housing.

Is there anything else we can help you with?

Check the plunger

Place the machine into the upright position.

Attach the mini turbine head to the hose or wand.

Pull the plunger into the 'out' position for vacuuming carpets.

Turn the machine on.

If the mini turbine is damaged choose 'part broken'.

Has checking the plunger resolved the problem?

Turn off and unplug the machine before carrying out tests.

Check the mini turbine head for blockages

Undo the two soleplate fasteners and remove the soleplate from the mini turbine head.

Check for blockages

Remove each side of the brushbar by sliding each half out from the sides of the mini turbine head.

Clear any thread and debris.

Check both of the metal shafts for blockages and ensure that they rotate freely by hand.

Inspect the duct on the underside of the turbine head for blockages and remove if necessary.

Check the outside surface of the plunger for fluff and debris and remove if necessary.

Reinsert both brush parts

When replacing the brushbars please ensure that both of the arrows on the brushbars are pointing in the same direction, towards the rear of the tool.

Replace soleplate and lock both fasteners.

    • Ensure a flush connection of the top of the soleplate before lowering downwards.

Re-attach the turbine head and turn the machine on.

Has checking for blockages resolved the problem?

Performance checks required

The mini turbine head will work if the suction is strong. This issue could be resolved by carrying out performance checks or washing the filter.

Test the switch

Press the rear of the switch to make sure it stays in the on position.

Please note: The switch does not light up.

Dyson machines are built to last. However, since December 2014 we have unfortunately no longer been able to supply spare parts, or carry out service or repairs for DC03, DC04 or DC05 machines.

Apologies. We can't help you online.

But our Customer Support Team will be able to solve your problem. Call us on 0800-298-0298

How would you rate our online support?

1/5 Poor

2/5 Average

3/5 Good

4/5 Very Good

5/5 Excellent

Dyson machines are built to last. However, since December 2014 we have unfortunately no longer been able to supply spare parts, or carry out service or repairs for DC03, DC04 or DC05 machines.

Apologies. We can't help you online.

But our Customer Support Team will be able to solve your problem. Call us on 0800-298-0298

How would you rate our online support?

1/5 Poor

2/5 Average

3/5 Good

4/5 Very Good

5/5 Excellent

Do not use the machine in this condition. Dyson machines are built to last. However, since December 2014 we have unfortunately no longer been able to supply spare parts, or carry out service or repairs for DC03, DC04 or DC05 machines.

Apologies. We can't help you online.

But our Customer Support Team will be able to solve your problem. Call us on 0800-298-0298

How would you rate our online support?

1/5 Poor

2/5 Average

3/5 Good

4/5 Very Good

5/5 Excellent

Clean the clear bin and cyclone

Remove the bin.

  • Take off the bin by pressing the release catch on top of the handle.

Check the openings on the duct and cyclone top for blockages and remove as necessary.

Disconnect the the clear bin by pressing the release catch at the front of the bin.

Clean the bin

Remove dust from the bin securely.

WARNING: Clean the bin with cold water only, do not use any detergents or polishes on the bin.

Clean the cyclone

Clean the shroud with a dry cloth or by using the combination tool.

Tap gently to remove dust from within the cyclone.

WARNING: Do not use any liquids to clean the cyclone.

Reconnect the bin and cyclone ensuring no gaps along the join.

Has cleaning the bin and cyclone resolved the problem?

Washing the filter

Please follow the steps in the video to wash the filter.

Has washing the filters resolved the problem?

Remove filters

Your machine has two washable filters which require washing at least once every 3 months.

Remove the clear bin from your machine by pressing the cyclone release catch as shown.

To remove filter A, lift the filter release catch on top of the bin to remove the filter from the machine.

To remove filter B firstly recline the machine. Press the release catch located on the ball to release the filter cover. Press the red catch on the filter and pull out.

Wash both filters in cold water only.

WARNING: Please do not use detergent, do not wash in a dishwasher or washing machine.

Repeat the steps until the water runs clear.

Filter B should be rinsed and tapped out until the water runs clear, then tapped out again to ensure all excess water is removed. This will normally require up to 10 rinses.

Dry filters

Leave the filters to dry in a warm place for 24 hours, until completely dry.

Replace filters and test machine.

Has washing the filters resolved the problem?

Do not use the machine in this condition. Dyson machines are built to last. However, since December 2014 we have unfortunately no longer been able to supply spare parts, or carry out service or repairs for DC03, DC04 or DC05 machines.

Apologies. We can't help you online.

But our Customer Support Team will be able to solve your problem. Call us on 0800-298-0298

How would you rate our online support?

1/5 Poor

2/5 Average

3/5 Good

4/5 Very Good

5/5 Excellent

Do not plug in or attempt to use the machine. Dyson machines are built to last. However, since December 2014 we have unfortunately no longer been able to supply spare parts, or carry out service or repairs for DC03, DC04 or DC05 machines.

Apologies. We can't help you online.

But our Customer Support Team will be able to solve your problem. Call us on 0800-298-0298

How would you rate our online support?

1/5 Poor

2/5 Average

3/5 Good

4/5 Very Good

5/5 Excellent

If the machine is spitting out dust, there may be a blockage.

Test the suction

Make sure the machine is standing in the upright position

Pull back the wand cap.

Turn the machine on and place your hand on the end of the wand.

Is the suction strong or weaker than usual?

Checking the upright lock

Recline the machine and stand behind.

On the right side, by the back wheel you will find the valve pipe carriage.

Check the valve pipe is clear of blockages by pressing the push button to remove it from the valve carriage.

Lock the valve carriage into place by pressing the large push button in front (visible when reclined).

Has checking the upright lock resolved the problem?

Dyson machines are built to last. However, since December 2014 we have unfortunately no longer been able to supply spare parts, or carry out service or repairs for DC03, DC04 or DC05 machines.

Apologies. We can't help you online.

But our Customer Support Team will be able to solve your problem. Call us on 0800-298-0298

How would you rate our online support?

1/5 Poor

2/5 Average

3/5 Good

4/5 Very Good

5/5 Excellent

Dyson machines are built to last. However, since May 2015 we have unfortunately no longer been able to supply spare parts, or carry out service or repairs for the following machines; DC01, DC02, DC03, DC04, DC05, DC11, DC16 machines. Sorry for any inconvenience caused.

Apologies. We can't help you online.

But our Customer Support Team will be able to solve your problem. Call us on 0800-298-0298

How would you rate our online support?

1/5 Poor

2/5 Average

3/5 Good

4/5 Very Good

5/5 Excellent