At times, many Bosch users change their devices heating element if the appliance stops heating water. According to specialists, the lack of results can lead to malfunctions, and some of these are described.
Causes of the malfunction
In case there is no heating during the washing cycles, the washer may still function normally, but at other times, it may display error codes F22 or F19.
The possible causes of heating failures could be as a result of broken heating elements or its circuits, broken temperature sensor or its circuit, faulty control module, dysfunctional firmware or clogged and broken water level sensor.
The heating element or its circuit
Bosch washer has its element mounted at the front part of the washer and to access it; you have to pull out the front panel of the body first. To remove this part, first, take out the top cover, then remove the detergent drawer, unscrew the control panel, pull out the decorative panel, then remove the hatch cuff and then unscrew the hatch locking device. To disassemble the washing device, a screwdriver to remove screws and a multimeter for reaction check are enough.
First of all, check the resistance of the heating element itself, which is mounted in a special socket in the tan and then next, check the supply wiring. The result obtained will then guide the next move to take.
If the element is faulty, take it out and replace it with a new heating element. If wires are damaged, also consider replacing them.
Though uncommon, the temperature sensor may also breakdown but it advisable to check it too. It is placed on the seal of the heating element, and the element is responsible for its breakages. To disassemble the machine to access this part, first of all, switch off power and water. Then continue to unscrew nuts and disconnect wires holding the top cover and the dispenser. Remove the top cover, then the detergent drawer and then unlatch and remove the control panel. Afterwards, remove other bolts and panels on the way and then carefully remove the front panel.
Next, remove the wires from the temperature sensor and check its resistance. If the sensor is faulty, unscrew the tension nut, remove the old sensor and in its place, mount a new one. If the sensor was intact, you need to check the wiring for openings.
Now you can access the sensor and test for any fault. If faulty, consider replacing it.
If the washer does not heat water, consider checking the level sensor. It is located in the heating element and before taking further action, check whether the pressure switch tube is clogged. If no clogging is recorded, check the resistance of the pressure switch coil. In case the coil is faulty, replace either its wiring or the pressure sensor itself.
Once you access the functionality of temperature and pressure sensors as well as the installation, consider checking the control module. For this part, you can either wash it or replace it wholly.