What is wrong if a ceiling fan shaking?

Question

I have a ceiling fan with 2 speed setting.

If set to low speed, runs OK;

if set to high speed, it shaking, what's wrong, how to fix it?

Answer 1

its probably not mounted correctly or is worn out.

Answer 2

Make sure it is cleaned and tighten all screws and mounting hardware.

You may have to drop the upper cover where it is attached to the ceiling box and tighten there also.

Answer 3

Yep, sounds like it's out of balance. Wobbling blades are annoying but they can also wear down the motor's bearings and bushings. If tightening the screws on the blade brackets and wiping dust off the blades don't solve the problem, you should balance the blades. Here's how:

http://www.thisoldhouse.com/toh/skill-bu...

Answer 4

The blades are probably not balanced.Or they may be loose. Fan kits usually come with a balancing kit containing weights to attach to the blades.Follow the instructions for balancing.

Answer 5

Your fan imight be out of balance, most fans come with small round weights that are sticky on one side. You attach these to the unseen side of a fan blade. This should fix the problem, if not the  blades might be loose, just tighten them up.

Answer 6

It sounds like its off balance, try tightening up all the fan blades.  If that does not work, can't help ya.

Answer 7

tape nickles on the blades until it is ballanced out. Check it out it really works. Old,Old,trick!!!

Answer 8

It is not balanced properly. Check that none of the blades are loose or bent or you may need to add weights.

Answer 9

at high speed it will wobble due to centrifugal force! some are designed to move taking the strain of the fixings but if looks like its going to fall off you better it looked at

Answer 10

It is not mounted to the ceiling correctly, and you better find out the screws or bolts that mount it to the ceiling, for before it rattles loose.