Question about Bosch BUC11700UC Cyclone Jet Bagless Upright Vacuum

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Vacuum cleaner shuts off after short use. What's the reason. Motor seems very hot.

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Almost all vacuum cleaners have a thermal cut-out, which operates when the machine gets too hot. It resets automatically when it cools down. Overheating is almost always caused by a blockage. Either the filters need cleaning or changing, or there's an obstruction somewhere in the pipe-work. Make sure all the pipes are clear so there's good air flow and you should be back in business. If the problem persists there may be trouble with the motor itself, in which case you'll need professional help (or a new machine). Good luck!

Posted on Jul 18, 2009

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Machine no power seems very hot


Vacuum cleaners easily overheat and will shut off as a result. The cause may be a bad electric connection, electric cord or accumulation of hair on the roller bar (prevents the bar from spinning, which burns up the motor). It might be a temporary problem or the motor might have burned up. Let it cool down, check all cords and connections carefully and retry it. You can call Bissell 1-800-237-7691 for more help if this doesn't resolve it

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Shark handheld vacuum shuts off after 10 to 20 minutes. What is the problem?


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Why wont the reset button depress on riccar 8955 or turn on after trying


The reset button does not have a significant amount of movement in response to pressing to with a paper clip or ball point pen. If the vacuum does not start upon pressing the button, then either the thermal protection circuit is not why the vacuum stopped in the first place or the reason the thermal protection circuit tripped has not been cleared. Quoting from the manual


"Your Riccar vacuum cleaner comes equipped with a Manual Reset Thermal Fuse Protector. This thermal protector is designed to protect your vacuum cleaner from overheating due to a restriction in airflow (i.e. clogged hose, operating the vacuum without a bag). Should this situation occur, the thermal fuse protector will safely shut off the vacuum cleaner to avoid any potential damage. NOTE: To determine it was the thermal fuse protector that turned off your vacuum
cleaner, please refer to the vacuum cleaner's headlight. If the headlight is on while the motor is off, then the thermal fuse protector did safely shut down the motor. If both the headlight and motor are off, then there is some reason other than the thermal protector (i.e. pulled plug) your vacuum is off.
To reset the thermal fuse:
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  1. Check for problem - over-filled bag, clog in hose, clogged filters, etc.
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Model number NV501 seems to be running hot. what should I check for?


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I have the same problem as discussed above. My Hoover Pet Cyclonic upright stops working while using it. The bottom feels hot when this happens. When it first occurred, I emptied the canister and even...


The vacuum is probably getting hot and the thermal sensor in the motor is shutting it off and then allowing it to come back on after it cools down. You mentioned replacing the secondary filters, replace the exhaust filter too.
If replacing all the filters did not solve it you may have a clog or restriction somewhere causing the loss of suction and the overheating.

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Miele canister keeps shutting off when i press + it starts again for short while and off again whats problem i have changed bar but still no good


Was it hot when you pressed "+" button? Did you check the filters(Hepa) or bag if clogged or suction path was blocked? Does it happen after it was cool down? From what you said, it seems none of the above. Only thing I can think of is circuit board. The mortor runs in variable speed. "+" increase the average voltage to the motor thus higher suction. PWM circuit in main pcb may not working correctly.

High priced vacuum cleaner like this shouldn't fail like this but it does. JMO.

Nov 07, 2010 | Miele S548 Bagged Canister Vacuum

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I have lux4000 vacuum cleaner. It started to shut down in brush mode vacuum in after 10 to 15 minutes. Motor seems hot when I touch the bottom part. It will start up after 10 to 15 minutes but shuts down...


It sounds like something is catching in the brush. Remove all foreign matter from around brush. Ensure belt is properly engaged. Ensure brush is installed correctly.
If these don't correct the problem, consider taking it to an authorized service center.

Aug 23, 2010 | Vacuums

1 Answer

Can the filter cause the vacuum to shut off?


Greetings from GoVacuum,

The answer to this question is yes, sometimes the filters can cause the vacuum to shut off. This typically happens when the filter behind the bag, or the pre-motor filter is clogged or dirty. Also if you have a clog somewhere in the system, this can also cause the machine to power down after a short usage time.

If the machines shuts down, and won't start until waiting for a period of 1-2 hours, then what's happening is that for some reason the motor is overheating, and to protect the motor from damaging itself because the motor can not breathe, it will shut it self down as a precaution.

This is either caused by a clog in the vacuums hose or power nozzle, or it can also be caused by a full bag, or dirty filter.

If the vacuum will not turn on at all, not even for a short time, this indicates something more serious then a clog or filter, and can be one of a number of things from the cord, or switch, and can also be an electronic circuit board, the motor itself, or the hose to vacuum cleaner may have gone bad.

If you can kindly be a little more specific on the problems that you are having I would love to try and diagnosis this thing to help you figure this out. I always happy to share my knowledge with others.

You may email me if you'd like, or just respond here with a clarification request.

If you found this helpful please help me out as I start here on Fixya by clicking the 4 Thumbs Up Icons in the top right hand corner of each repair.

Thanks again,

Chris Jones
Govacuum

Mar 20, 2010 | Electrolux EL7020A Oxygen 3 Ultra Canister...

1 Answer

Bosch Vacuum Cleaner: I changed bag. Cleaned out all suction hose and hepa filters, however, my 1450 w 12 amp upright vacuum cleaner will die after five minute run - overheating. Please advise.


Greetings from GoVacuum.com,

It sounds like you may have a bad thermal switch inside the machine. Most vacuum cleaners have a switch connected to the motor, so if the vacuum cleaner is running hot, it will shut off to prevent any damage to your motor. You did all the right things by checking the bag, making sure the hose was NOT clogged, and replacing HEPA filter.

Most of the time on canister vacuums, the reason is caused by a clog in the hose, or somewhere in the powerhead. If you're sure that there is no clog anywhere, it is going to be the thermal switch on the motor.

Here's a link to the parts schematic for the Bosch upright vacuum. I hope it helps you in determining how to access the thermal switch. A word of warning to you before you try it, this is a very tough vacuum cleaner to work on, you may want to bring it in to a vacuum repair shop, as this is not an easy repair.

Here's the link;
http://www.essco.net/Customer/SchematicFrame.asp?FileName=Turbo%20jet%20upright.pdf

Please let me know if you have any other questions,

Chris Jones
GoVacuum.com
1-866-468-2288
chris.jones@govacuum.com

Aug 16, 2008 | Bosch Vacuums

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