Dishlex dx302 - not heating

If it is the old model about 15 years old (i own one myself) it is the water inlet it may be leaking.

I had the same troubles and i installed a new pipe on the dishwasher and now it heats fine. All you need to do is get a new pipe (you can get them from the dump) off of an old dishwasher and put it on yours but make sure it doesnt leak first.

If you have more questions please dont hesitate to ask im more than happy to help

Jacob McNamara