My dishwasher does not heat up the water. It seems to go through the cycles but uses cold, not even luke warm, water. What is wrong?

While it doesn't seem likely, if you've changed, or had the thermostat changed.... I'd say you got a faulty thermostat. I am curious as to what your temperature gauge says the temperature of the engine and coolant is.. If your gauge is showing hot, I can think of two more possibilities... the water pump isn't pumping right... and, if the water pump isn't working right, the problem can be a cracked head or block, which can cause an airlock in the coolant system. Check the coolant or radiator cap.

hay audra ,it seems like your heating element is bad , test it for continuity or open the door 2 minutes after you start the cycle (caution it may be hot ) good luck APPLIANCES R EN

see this causes and fix it. God bless you
will not run on cold water or even luke warm water, it has to be hot water. Most will even specify 120F or hotter water temp as incoming water. These new units only use 1.5-3 gallons of water for each fill, so the temp has to be there. Many brands recommend that you run your kitchen sink water until it gets hot, then start filling your dishwasher, we also recommend that. Some dishwashers will stop if it senses too cold of water coming in, others will try to warm the water and if it can't in so much time, the unit will stop and give an error code. Hot water also helps dissolve and mix the soap detergent better, giving you better washing results. Just make sure the water is hot going into your dishwasher, no getting around it.

Try first to heat the cups ,and then make the coffee.
Becouse the water for coffee and for hot water comes from the same way.

Hi -
I can't see how any installation problem would cause this - if the dishes are still wet at the end of the cycle, you'll probably find the water isn't heating during the wash cycle. The dishwasher uses steam to heat the washing compartment and dry the dishes. It would appear that the dishwasher isn't heating water internally.
Even if the washer was accidentally connected to the cold water supply ** (see note), this shouldn't happen as regardless of the water supply temperature, the washer should still heat the water to the correct temperature internally.
** UK dishwashers should be connected to the cold water supply. For US installations, dishwashers are commonly connected to the hot water supply. For other locations, please consult your installation instructions.
I suggest you start a regular wash cycle and leave it to run for 10-15 minutes. Then open the door and test the temperature of the water in the base of the washer by hand. The water should be hot and there should be steam present in the washer when you open the door.
If the water is cold or only warm, the water isn't being heated internally or isn't heating to the correct temperature, in which case you should contact the retailer or Bosch Service immediately for a replacement. Do not accept an offer of repair on a brand new washer!
Additionally, do not attempt to repair the dishwasher yourself when under warrantly as this will invalidate the warranty.
Hope this helps. If you need further assistance, please let me know your location and the model number of the washer. This should be laser-etched into the top of the door if you can't find it on any of your paperwork.
Regards, BElectric

Does your machine take in hot or cold water. If it takes in hot water the element that heats and maintains the heat may be defective. If it takes in cold water the element is heating it but the thermostat is cutting out the element at too low a temperature. Normally dishwashers take in cold water and heat it to the required temperature, which would mean that the thermostat is faulty?

Hi,
Check your heating element..

A bad heating element causes many problems in dishwashers…

Dishwasher Problems The Heating Element not Working

Dishwasher Maintenance

heatman101

Asker's Testimonial " explanation very clear. will give it a go and see how simple it was. thanks Ronnie " - ronnieshomes

the heater does not heat the water it keeps it hot check there first id say the heater or thermal is bad if both check good replace control

Wow, I am just wondering is the water inside the dishwasher warm or hot? Or is it cold? IF it is cold it could be that the unit is trying to heat the water usually to 120 degrees.If it is hooked up to a cold water valve from your house this could be the problem. Or it is the heating element,.

Some circulation pumps have a 3 phase mixing valve (cold,warm,hot) to regulate the water pressure in the building; no way to know unless you trace the plumbing. Basically, the hot water temperature could be lost because the circ-pump is cooling it with the cold water supplied to it. This is used to balance the pressure (aka Pressure Balancing Circ-Pump), so heater is really working overtime to heat the water. If the pump has two in and one out that's more than likely your problem; but you should consult a "old-school" plumber in your area.