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Bathroom Fan Surges On and Off

Category Electrical
This is a page about fixing a bathroom fan that surges on and off. There are numerous reasons that the fan might be surging on and off. Here are some tips to diagnose the issue.


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December 4, 2017

We installed a new toggle light switch and new ceiling exhaust fan timer switch for the bathroom. Now when we use the hair dryer the exhaust fan surges on and off. Why? What did we do wrong? How do we fix it?


December 4, 20170 found this helpful
Best Answer

It appears that you have one of the wall outlet wires attached to one of your toggle switches or even your fan timer switch. You will need to verify your wiring and check to make sure you have all the wired firmly secured and in the right place. Make sure an open wire isn't touching another one and if you do have an open wire use a wire cap on this. it is dangerous to leave it open and not capped.

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December 4, 20170 found this helpful
Best Answer

If both are on the same circuit, it may be overloading. You may need two circuits.

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December 5, 20170 found this helpful

Outlet for the blow dryer needs to be on a different circuit.

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December 6, 20170 found this helpful

I would consult an electrician in case of fire.

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