Dryer Not Heating
There are any number of reasons why a tumble dryer will demonstrate the fault of “won’t heat” and here we will look at the most common reasons for that fault and how to troubleshoot it.
These are the most common scenarios but they can vary depending on the make and model of the dryer. If you need any clarification or extra help please ask in the forums where you can get more specific advice in regard to a particular make and model as well as the problem.
The first port of call for most people or, the first thought at least, will be the heating element itself.
Obviously if the element has gone open circuit then the dryer will not heat up as the element is faulty and, just like a light bulb, if the element is broken (either visibly or internally) then it simply will not work.
For most tumble dryers checking this is merely a case of accessing the heating element and testing it with a meter. If it is open circuit then it will require to be replaced.
If the element is good in that respect then you will need to look elsewhere for the problem and, there is a far more common cause for the fault of a tumble dryer not heating.
Tumble Dryer Thermostats
These are a much more common reason why a tumble dryer will not heat. Especially the “overheat” thermostat being activated on modern tumble dryers.
Generally speaking you will have at least two thermostats in any tumble dryer.
One is the control thermostat, this is the thermostat that switched the heating element on and off as required, controlling and maintaining the temperature inside the tumble dryer.
The other is an overheat or protection device, sort of like a fuse that will “trip” or activate should your dryer get too hot. This is a safety device and should not, under any circumstance, be by-passed as doing so can be incredibly dangerous.
There are other articles on the topic of tumble dryer thermostats explaining them more in depth should you need them as follows:
Getting the correct replacement parts are usually not too difficult, some are cheap whilst some are not. There has been a trend toward bundling the element and thermostats in one unit for a number of brands making the replacement heater and thermostats more expensive but the upside to this is that you know the whole lot is good when replaced.