There are many moving parts in a dryer that can wear down over time and begin making noises. Belt tensioner pulleys and drum support rollers will often begin squealing or screeching as their bearings fail. The drum bearing can make a similar sound as well. Fortunately, these are considered normal wear and tear parts and, in most cases, these are typically a painless repairs.
Another common failure, that can make unbearable noises, are issues with the blower wheel. The blower wheel is a fan blade that forces the air and moister to the outside of the dryer. It spins at a very high rate of speed. If it becomes cracked, loose, or off balanced, it will make an incredibly loud rumbling noise.
If your dryer will not start or turn on, it may be as simple as blown fuse. Most dryers are equipped with several different fuses that will trip if they get too hot. The most common reason for a dryer not starting is a blown thermal fuse. The purpose for this fuse is to shut down the dryer if it overheats, often due to poor exhausts airflow. On an electric dryer, a blown thermal fuse will prevent the dryer from doing anything. On a gas dryer, the unit will run but will not heat.
Electrical issues with the power supply can also keep a dryer from starting. In many cases, the failure is not in the dryer, but is instead an electrical issue in the house. In other cases, a faulty timer, circuit board, or switch may be in need of replacement.
In some cases, a broken belt could be responsible for your dryer not starting. When a belt breaks, it will often produce a loud bang or pop as the tensioner pulley is released. This spring loaded tensioner pulley keeps the belt tight around the drum. Some dryers are equipped with a belt safety switch attached to this pulley. It will recognize the release of tension, and intentionally disable the dryer from running.
Drum Not Turning
Your dryer sounds like it is running, but you open the door and nothing moving. This is an indication that your belt has broken or has come off. Not all dryers are equipped with a belt safety switch. Many dryers may continue to run with a broken belt. Fortunately, belts are easy to replace and can be replaced with minimal cost.
Not Drying Clothes
If your dryer is not drying clothes, you first must determine if the unit heating. If your clothes do not feel warm or hot, you will probably need to call an expert. There are a number of things that can cause a dryer not to heat aside from just a broken heating element. Dryers have a multitude of fuses and thermostats that can fail and and disable the heat.
If your dryer is heating, but still not drying your clothes, than your likely experiencing airflow issues. The dryer may feel hotter than normal because the heat is not escaping. The most common cause for this is a blocked or restricted exhaust vent. If it gets clogged by lint, or in some cases a nesting animal, the moister from your clothes cannot exit the dryer. In many cases, this will result in the dryer taking twice as long to dry clothes. You may also experience excess moister on the inside of the dryer, especially around the door.
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