Switch bad need to bypass switch

What I see most often is the safety switch in the nozzle goes bad. Shark vacuums are considered disposable and they don't sell parts. That doesn't mean it can't be fixed though. Take it to your local vacuum repair shop and have them bypass the safety switch and service your machine.

Take it to your local vac shop for repair. Switches are not that expensive.

You should simply purchase and install a new switch. It's not safe to bypass the switch as when you do, the entire electrical load is placed on the wall prongs when you plug in or unplug the vacuum. Depending on the brand of vacuum, you can easily order parts and replace the switch at a nominal cost.

Remove the switch (with unit unplugged) remove wires from switch and solider the two together

If the button will not reset it is possible it has not tripped. They can go bad but it is very rare. You can remove the wires from it'll bypass it. If the vacuum runs after you bypass it then it should be replaced.

I would double check your wiring, Make sure all wiring is tight. No cracks, no pinched wires. If needed, bypass the switch and see if it will stay running. If so, switch would be bad. If it's the same, then you have a wiring problem or a worn motor at the worst.

The switch could be bad. Make sure there are no clogs anywhere that could be causing it to overheat. Try to bypass the switch and run it just long enough to see if you can go longer than the normal 5 min. you're getting. If you can then replace the trip switch. Do not continue to use the machine without the trip switch operating properly or it could catch on fire.

try bypassing the switch if it still does not work than motor must be bad

is there a manual to show how to remove the switch? How do I bypass it?

What do I have to do to be sure the switch issn't the problem?

While there's no reset button it's not uncommon for the internal thermal switch to trip to an "open" position. This internal, no-access-switch opens when the motor gets hot, it protects the motor from overheating to the point of failure. Bissell's website states that if the thermal switch is tripped let the vacuumm sit for a half hour and then it try it again.

If it doesn't work you might then try Tech610's suggestions.