Has the dryer had a period of nonuse?
• If the dryer hasn’t been used for a while, there may be a light thumping sound during the first few minutes of operation. When the dryer is not used, the drum support rollers can flatten where the rollers and drum touch. The flat spot causes the thumping sound. Once the dryer runs for a few minutes, the rollers will regain their shape and the sound should stop.
Is the load knotted or balled up?
• Another form of thumping can occur when the load is twisted or balled up. Laundry items with large amounts of fabric, such as sheets, curtains, tablecloths and bedspreads, can roll into a ball in the dryer. This ball of fabric may thump and may cause the dryer to vibrate. To reduce this, add these large items loosely into the dryer. Remove any bunching that may have occurred during washing.
Are you hearing a scraping sound?
• Objects such as coins, paper clips, safety pins, screws, nails or other small hardware can get caught in the seam where the drum meets the front or rear. Turn off the dryer. Look inside the dryer along the front and rear edges of the drum. Remove any objects caught in the seam.
Are the four legs installed, and is the dryer level front-to-back and side-to-side?
• A dryer without legs, or that is missing legs, may rock or teeter on a floor that is not level, which will cause some noise. The legs adjust up and down to level the dryer on a floor that is not level. Check if any of the four dryer legs are missing. Replace any missing legs, and level the dryer both front-to-back and side-to-side. A level dryer is required for the sensing of load moisture in dry cycle-auto cycles.
Are you hearing a knocking or rattling sound?
• Zippers, buckles, buttons and rivets on garments as well as loose coins, paper clips, pens, or similar items may be tumbling in the dryer. Always check and clear pockets prior to washing.