Question about Hoover U6630-900 WindTunnel Bagless Upright Vacuum

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After running for 15 minutes, the windtunnel vacuum cleaner shuts off. It will not restart until it has been off for 30 minutes. Could it be overheating for some reason. All of the filters are clean; the dust tank is empty; the belts have no cracks.

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It's not necessarily overheating, but the thermal-fuse is definitely tripping and it takes 30 minutes to reset. There are several causes of this (in most common order):

1. A blockage in the suction system or a full dust tank
2. Dirty filters (Don't forget to check the air outflow filter at the back)
3. A worn belt
4. A faulty thermal fuse.
5. A faulty motor

As you've stated that the dust tank is empty and the filters are clean (don't forget to check the HEPA / air outflow filter at the rear), let's look at the other options.

Check the suction is good by putting your hand over the end of the hose and seeing if it will stay attached to you hand upside down.

Next, check the belt isn't slipping. Lie the hoover on it's side and check the rollers are turning constantly and at high speed. This isn't foolproof as it doesn't account for the extra friction of the brushes on the carpet, but it's a reasonable test. A worn belt wont necessarily be cracked. It can stretch and slip without cracking. Also, when a belt is slipping, you can usually smell burning rubber.

If the hoover runs ok for 15 minutes and there is no burning smell from the motor, then it's more likely a faulty thermal fuse than the motor itself. They are replaceable but unfortunately, thermal fuses aren't always sold separately and sometimes you have to buy a new motor (!!) to get a new fuse. Hoover are one of the best manufacturers when it comes to buying spares, so you might be in luck.

I've removed faulty thermal fuses from vacuums because a spare wasn't available without buying a motor. However, I have always done this with the owners full consent after explaining to them that a safety feature has been removed and they should avoid using the vacuum for prolonged periods without letting it cool. I also test the rest of the vacuum fully before returning it.

If you want to try removing yours, it will be attached to the motor with simple spade connections, but you do this AT YOUR OWN RISK. The danger in doing this is that the motor will burn out if it gets too hot, rather than being switched off by the fuse.

Posted on Oct 16, 2010

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Hope this helps !!
rate me good ;o)

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