There are many reasons why a dryer may not dry or heat up, and before calling in a professional for repair, it is important to look at a few things to see if you can fix them yourself. The problem could be a failed heating element, or a thermal overload cutout (a mechanism built into the machine that stops it from working when it overheats). Both of these problems are often due to the machine not having proper airflow.
First, check the hose to make sure it isn't clogged or bent, preventing air from flowing out of the machine. Air not circulating properly will cause the dryer to not heat; if these steps do not resolve the problem, it may be due to an overloaded, clogged machine. Too full will stop the air from circulating freely, thus causing the machine to overheat. Opening the door during the cycle can also cause problems because it interrupts the way the air heats up and cools down. If the thermal overload has been cut off, it can simply be reset.
To do this: unplug the machine, unscrew the back panel, a set of wires and a small black box can be seen on the panel itself or on the back of the machine, press the red button. If it has tripped, you should hear a click. If you still have problems, the heating element may be damaged. Before calling in a professional to fix it, check your warranty to see if it can still be repaired by the retailer or the manufacturer, and get it repaired by the relevant professional.
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