Upon powering up suction is low. Needs to be primed with hand on hose intake; then full suction comes back.

Hi Alan, it's Jack at Dyson.

Thanks for the comprehensive information on the issue you're having with your DC25. It sounds very unusual, because if you're getting strong suction through the airway you've labeled in your photograph, there should be nothing stopping the airflow reaching the cleaner head.

It's very important to understand that in order to work effectively, the cleaner head's soleplate must form a close seal with the floor surface. I'm not sure how you're testing suction through the cleaner head, but just placing a hand underneath the soleplate is not an effective way of testing the suction as the soleplate will not be sealed. Therefore the level of suction will feel very different, compared to placing a hand right over the end of the hose.

From what you've described it does sound like your vacuum is working as normal. However for additional assistance, please my colleagues at the Dyson US Support team at [email protected] - if you can include your serial number and full contact details, we'll be in touch as soon as possible.

It sounds like the roller brush is going, but the vacuum isn't working, i.e., no suction.
If you have a canister vacuum, disconnect wands from hose and place hand at end of hose. If there is suction, it's fine. If not, disconnect hose from vacuum, turn on vacuum, and hold hand to intake. If there's suction here, then the hose must be clogged; or holey hose can result in greatly reduced suction.
If it's an upright, the hose could be clogged. Or the fan broken, which would also result in no suction. It would help to know what model you have.

Yes, one thing to try: With the hose attached, place your hand over the suction opening at the pick-up end of the hose. Then pull the trigger. The pump is suction driven, and if there is air in the water line in the hose, that is known to allow th hose to prime in about 10 to 15 seconds.

So I have exactly the opposite problem, it sucks in floor mode but the hand held has zero suction. My daughter and i just spent the last hour disassembling and diagnosing and found this: The way the suction tube is configured, you have two places to **** from, the floor and the hand held hose. If you look at the back of the machine, you can see the "y" where the two hoses join. just behind the beater bar there is a blast gate that closes when you stand the machine upright. This closes the blast gate and directs full sution to the hand hose. In floor mode as the handle tips back, a follower wheel and spring move the blast gate to open. THIS IS THE IMPORTANT PART...if the hose is not docked, there is a second place for the suction to go and you will get no suction at the floor. In my case, the center post where the spring mounts is broken and the blast gate flap does not close, so the hand hose gets no suction because it is like a straw with a hole in it, the air will seek the least resistance. In your case you either have not returned the hose to the docking port or your blast gate is stuck in the closed position. To check this remove the two screws and clamp that secure the lower hose to the suction manifold. Pull the hose stright an look inside to see if the blast gate is open or closed. Use the release pedal to cycle the machine between upright and floor mode and you should see the blast gate open and close. If you don't, well that's a whole other story. I'm off to see if I can find a replacement part at repairclinic.com. If not I will have to get some polyester epoxy and fix it myself.

http://www.hoover.com/pdfs/manuals/F5914900.pdf try priming your hose

Before using tool
It may be necessary to remove air from
the system (“prime the pump”) so the
clean solution will flow to the tool. Follow
these steps:
1. Attach tool to hose and turn the carpet
cleaner ON.
2. Put the tool on a hard surface or
against your hand to block off the suction.
3. Wait a few seconds (can take up to
15 seconds). Then squeeze the trigger
and begin cleaning.
Follow the instructions on pages 14 and
15 for the appropriate cleaning task.

Godbless

http://www.hoover.com/pdfs/manuals/F5914900.pdf

Problem: Low suction
Problem: Clean solution won’t
dispense
Problem: Brushes/brush indicator
won’t rotate during floor cleaning
Possible cause
Possible solution
• Not firmly plugged in
• Plug unit in firmly
• No voltage In wall plug
• Check fuse or breaker
• Blown fuse/tripped breaker
• Replace fuse/reset breaker
Possible cause
Possible solution
• Recovery tank full/automatic
shut off engaged
• Remove and empty recovery tank
• Blockage In tool on end of hose
• Remove tool and clear blockage
• Recovery tank lid not on
correctly
• Make sure lid is on securely
• Recovery tank front panel not
replaced after stair or upholstery
cleaning
• Replace recovery tank front panel
(page 14)

Before using tool
It may be necessary to remove air from
the system (“prime the pump”) so the
clean solution will flow to the tool. Follow
these steps:
1. Attach tool to hose and turn the carpet
cleaner ON.
2. Put the tool on a hard surface or
against your hand to block off the suction.
3. Wait a few seconds (can take up to
15 seconds). Then squeeze the trigger
and begin cleaning.

GOODLUCK!!!!

disconnect the hose where it goes into the base and see if you have suction there.if you don't then your intake hose is clogged.thats the hose that your long stretch hose connects to.take a coat hanger and bend the tip so the end is rounded.work it down into the intake hose at the bottom and try to push the clog out through the bottom.make sure your filters are clean and the bag isn't full. please leave feedback

take all of your filters out then turn it on and see if you have suction.if so the filters are dirty.talke your hose off and blow throughit if you can't the hose is blocked up.also go to the intake hose which is located at the bottom ,it should be kind of clear.it comes up the backside at the bottom.theres a connector it is attached to that is held in be 1 or 2 screws take them out and you should be able to pull it away from the back a little ,take a coat hanger and bend the tip so it is round then work it down into the intake hose and see if you can push the clog out though the bottom .those are the things that will keep it from having suction.try the filters first,then the hose,then the intake hose.good luck

disconnect the hose from the intake hose on the back its the clear looking hose at the bottom on the back.yes you should feel suction where the bag gets connected the clog is at the bottom.but clean the filters first.your long hose i would take it outside and blow it out with a garden hose.on the bottom where the intake hose is ,take a coat hanger and bend the tip till its rounded so you don't puncture a hole in the hose.just work it down into the tube and se if you can push the clog out the bottom ,you can put your hand over the intake hose where it connects to the long hoseand see if you have suction there,if not then the clog is in your intake hose.if you do then the clog is either in the long hose or the filters

Check the main filter cone - if it has a rip in it, then there won't be any suction in it, also clean it gently with a paint brush to get all of the dust out and check the back of the upright after the bin is taken out as sometimes there is dirt clogged at the back. Check the front of the sole plate i.e. where the roller brush is and check the dust channel behind this as it can get clogged. Due to the nature of this vacuum with the hose being located at the front of the floor head dirt can be trapped but most of all its the paper pleated cone filter that needs a good brushing. Hope that helps.