Dishwasher does not heat: what you can do now
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If your dishwasher is no longer heating, cutlery and plates will not get really clean. You can read about possible causes and what you can do now in this practical tip.
Dishwasher does not heat: Possible causes with low heating power
There are many possible reasons why your dishwasher is no longer heating. To narrow this down, check whether your device is no longer heating or only heating slightly. If the latter is the case, you can quickly solve the problem yourself. Otherwise you need a specialist or electronics expertise.
- Heating element calcified: If the heating element is heavily calcified, sufficient heat can no longer be passed on to the water. Descale your dishwasher.
- Low water pressure: Check the water pressure in your dishwasher. To do this, first turn off the shut-off valve and remove the water supply hose. There you will now find a collecting sieve with possible soiling. Clean it, reconnect the hose and open the shut-off valve.
- AquaStop defective: Newer dishwashers in particular have a so-called AquaStop. If this is defective, there is not enough water in your dishwasher. Test the flow of water and compare it with the information on your device. If in doubt, replace the AquaStop. Attention: The component is live and should not be repaired by yourself.
Dishwasher: heating power is missing completely
If your dishwasher no longer heats at all, the fault is mostly in the electronics. Here you should let a specialist in. These causes can be responsible for the complete loss of heating power:
- Control relay: In the front flap of your dishwasher there is the control board, which was usually only clamped into the housing. The control relay is soldered to this board. Check whether one of the cables has come off due to overheating. If so, it needs to be re-soldered. In the worst case, the relay is also defective and must be replaced.
- Circulation pump and heating element: If all the causes already described can be excluded, measure the circulation pump and the heating element. Go through all the washing programs and compare the values.
