Introduction
This guide shows how I removed lint buildup from the heating element of my washer dryer. The accumulated lint prevented a good airflow, causing the thermal switch to trip.
There is no lint trap in this machine, as the lint is supposed to be removed during the washing cycle - but clearly some of it still reached the hot air duct. The machine worked correctly for about one year of normal family use.
What you need
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First things first: DISCONNECT MAINS PLUG !!
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I removed the washing machine top cover. The heating element is clearly visible. Be careful as it gets really hot when working.
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The thermal protection switches. Lint caused the assembly to overheat as there was little to no airflow. I could press the little button and reset the switch (and heat started to be produced again), but it would trip again after a few minutes as the heating element became too hot.
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Removing the heating assembly was easy. There are 5 easily accessible screws holding it. A few wires are connected to the heating element and you need to disconnect them first. Make sure you properly sign them so that you will know how to reassemble everything properly!
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The air intake duct is now visible. A considerable amount of lint is restricting the airflow and causing the heating element to overheat. Try to remove all lint with a vacuum cleaner. If pieces of lint fall inside, they will be washed away during the next washing cycle, but big lumps could clog the filter, so try to take everything out from above.
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Here is the air duct with no lint inside. You can now reassemble everything. Put the heating element in place, fix it with the screws and reconnect the wires, double-checking the connectors using the picture with the numbers that you saved before.
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This is the heating element, removed. It's basically a hollow aluminum horn with a fan and a heating resistor inside.
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It was quite clean inside, but I decided to open it anyway, while it was on my table. It was really not necessary as you can see from the pictures.
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If you decide to go for it, be careful when separating the shells, and also be careful not to overtighten the screws when reassembling it, as the body is made of aluminum.
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I really put the pictures here only for the sake of completeness.
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To reassemble your device, follow these instructions in reverse order.
To reassemble your device, follow these instructions in reverse order.
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