How do you fix the speed in your Hampton bay fan Model UC70787 I can only get high but not medium and low speeds?

To fix the speed issue on your Hampton Bay fan Model UC70787, first, check the pull chain or remote settings to ensure they are properly adjusted. If the fan only operates on high speed, inspect the fan's wiring connections and the capacitor, as a faulty capacitor can prevent the fan from running at lower speeds. If you're still experiencing issues, consider resetting the fan by turning off the power for a few minutes and then turning it back on. If problems persist, you may need to consult the manual or contact customer support for further assistance.