The display windows shows message error of "E68". Is this the display board or the interface board that needs replacing? Or is this the same item? The display board continually beeps and changes settings when not in use. Also, when you try to use the dryer, it doesn't always allow you to choose the setting you want. Then, it may or may not dry the clothes, often kicking off within 30 seconds of turning it on. Please advise.