What is the cause of fan running in reverse direction?

The working principle of fan is based on double field revoving theory. So sparking is due to any fault in fan. But when you rotated it in opposite direction,its starting wind flux and running winding flux are opposes to each other. So winding of should damage or capacitor is expired.

Why don t ceiling fans change their rotational direction even though current direction varies in the AC circuit?

Because its an induction motor. The moment when rotor spins and changes its direction current also so instead of stopping and changing direction it runs smoothly.

Can capacitor change direction of fan?

Nope its not possible as capacitor present in the ceiling fan gives the initial starting torque to the fan so it doesn’t have any role in the direction of rotation. If you want to rotate the ceiling fan in opposite direction then either one of the main and auxillary winding terminal should be oppositely connected .

Does polarity matter in ceiling fan?

Nothing will happen, fan will rotate at the same direction as before. Remember one thing AC is alternating current and in first half cycle of AC, phase is positive and in next half cycle of AC, neutral is positive.

Why does my ceiling fan only work in one direction?

Replace worn-out ceiling fan reverse switches. It’s rare for these switches to break, but occasionally a switch will allow the fan to rotate in only one direction. While the fan is turned off, the reverse switch slides to the opposite position to change the direction of the blades when the fan is turned on again.

Why does my ceiling fan go back and forth?

Ceiling fan wobble is caused by imbalances in the fan blades or blade holders, misalignment of blades, excess dust accumulation or just loose ceiling fan mounting. Restore your fan to its smooth-running days of old before you wear down the moving parts.

How do I keep my standing fan from rotating?

Typically, pushing the knob down activates the oscillation feature. The knob triggers the internal oscillating motor into motion. Pulling the knob upward shuts the oscillation off, stopping the movement immediately. However, if the knob assembly breaks, it will prevent activation.