My Harbor Breeze ceiling fan worked fine last summer. This year it only runs on high speed. Will replacing the switch give me the other 2 speeds again?

Dear sammycathey

Why would you replace the switch if the fan ran fine last year?
Did you replace anything since? That information is essential...

;)

Does this fan also have pull chains?

Is it a remote fan?

If not it is likely the capacitor.

Ceiling fan capactors - troubleshooting and resources - Ceiling Fans N More (http://www.ceiling-fans-n-more.com/ceiling-fan-capacitors.php)