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With no suction you should check the venturis. They can become clogged if you suck up wet dust, wet cat litter, etc. You\'ll need a Torx Screwdriver to get it apart. See where that gets you.
Sucked up a sock?? No seriously.. it may be as simple as that or that an on board filter is clogged. Check your manual for all filters and Hepa/screens and others. Also, is the unit making any odd noises since the non -suction scenario? Whining or screeching sounds, where is the motor impeller/vac bearing or similar is damaged or a hose is kinked within hte unit itself.. <not normally unless the unit has been taken apart and placed back together and crushed the main return vac hose. .
yikes! hard to lose suction on a dyson! i have this one and have had this problem a couple of times..
remove the canister - check the line in and the hole that goes into the canister for blockages.
check the filter - you can (and should) remove and clean the small foam filter every 6 months.
if it is still clogged - depending on what you vacuumed up....
In the top part of the canister there is a piece that has holes - if these become clogged it can reduce suction.. clean this part.
If you have by some chance vacuumed up ashes or fine dust from drywall.. etc... or if it was wet... and you have done all of these things.. i would take it to be checked... these are no no's for the workings of a vacuum :) Good Luck!
Two possible solutions come to mind. First off, there is a clog in your hose. If you have another vacuum, try using the hose on that one to **** it out.
If that doesn't work, you may need to have the clutch replaced. Check your warranty. The clog wont be covered, but the clutch will be,
the filter tube is clogged , I know it takes time but use either damp rag over filter holes or try blowing into holes I find gently tapping and blowing help also swifter dusting cloth helps unclog it
My Dyson DC14 had no suction...see if this works...turn the Dyson upside down...there is a length of hose that connects the bottom of the vacuum to the top, careful remove one end of the hose and check for debris...mine was clogged. Removed the clog and voila...it works. Thanks for the above info on checking the hose for cracks.
Check the actual brush bar is moving. If it is then there's definately a clog and it could well be behind the beater bar. If you can remove the sole plate (which is the grid in front of the beater bar) then undo it and check dirt behind the beater bar, belt and main dust channel. Also check the main inspection air ways and if the beater bar is clogged with hair, clean it off.
It sounds like the same problem I was having. I had loss of suction through he hose then all of the air was coming out through the vent/valve on top of canister. If you are looking at your dyson from the back, look at the bottom. You will see a purple plastic tab on the bottom left. That allows you to remove the plastic u-shaped hose that goes from the hose to the bottom of the dyson. I just removed that and found it was completley blocked. I removed it and the dyson has no loss of suction orair through top valve/vent. I hope this helps. I never post but i'm just excited that I got my dyson working perfectly again.
The wet and dry vaccuums should normally have the dust filter removed when used for wet work. If the filter was left in, it will certainly be clogged and useless. I would suggest trying the unit with no filter, just to check there is good suction. If there is, a replacement filter is required. If there is still little or no suction, then it is possible that there is a blockage within the impeller area somewhere. Wet dust/dirt tends to stick really well to the impeller blades, reducing their efficiency to point of almost no suction. I'm not sure if you can get that far into your unit, if you can, it would be worth using a stiff brush to remove and adhered debris.
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