I'm sorry to hear you're having this issue with your DV210AEW. If the vent is clear, the power is sufficient, and the controls are set properly, the dryer should be able to function effectively. To see the estimated dry times for different cycles, please refer to the Cycle Chart at the back of the user manual. The manual can be downloaded as a pdf file from this website.
Please follow this link then select "Troubleshooting ► > Cycles And Settings ► > Excessive Drying Times" to review troubleshooting tips: http://support-us.samsung.com/cyber...
If the problem persists, call 800-SAMSUNG to speak with an agent who will be happy to assist you.
answered 2 years, 7 months ago