Pumps water but is always cold
The heating element in the bottom of the unit may be burned out. With an ohm meter, check to see if there is any resistance with power removed and terminals of heating element exposed. If it measures about 1 or 2 ohms, it is okay. Anything more than about 200 ohms means there is likely a break in the element., If it is okay, then check the wiring to the heating element.
SOURCE: bosch dishwasher shu4302uc
Common problem with these. Control panel (behind all the buttons on the door) has a thyristor in the middle of the PCB for switching the heater element ON/OFF.
After many screws and a bit of fiddling about, get access to back of PCB (print side) to find dry joints. Clean and re-make joints and all should be well.
Caution, this is a high voltage area. Disconnect from mains.
Please see photos.
Cheers…..Dave
SOURCE: Bosch sgv53e13gb Integrated dishwasher - wont start a new cycle!?
Thanks for the input Dicky...I think my dad will be onto the place of purchase first thing tomorrow!!
SOURCE: bosch dishwasher
i know this sounds daft but --
turn off water. disconnect fill hose from water supply. wait 5 seconds and reconnect fill hose then try it out
SOURCE: Bosch built in dishwasher shu4302uc
There are no adjustments for cycle timing. What does affect timing is temperature of the water coming into the DW. The hotter your supply water, the shorter the time to cycle, BUT if your water is too hot, the cycle time may become too short to light the NSF 'Sanitize' indicator. But since the cycle is taking so long, this is an indication that the DW's water heater is not heating the water hot enough to advance the countdown timer in a timely manner. The control logic is waiting for the temp to come up to an appropriate level to ensure adequate washing, rinsing or drying times. Likely your display is showing '1' for a long time as a symptom of this problem, as well.
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This link http://www.applianceaid.com/boschDW.html has procedures to run self-tests on various Bosch models. I suspect that you can confirm a 'heater fault' on your unit by running the self-test.
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This problem invariably relates to a 'heater fault' which has usually been traced to an open solder joint on the control board located behind the switches/indicator lights on front door. If you have a Torx driver, soldering iron & bit of solder, you can effect a repair yourself in about an hour. Otherwise, a replacement control board is required.
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If you'd like to attempt replacing the control board yourself, refer to this link for part & DIY information.
http://www.appliancejournal.com/appliance-parts/bosch-appliance-parts/bosch-dishwasher-control-module-266746-37/
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Else, place a service call to the tech of your choice.
SOURCE: Bosch dishwasher not 'steaming' plates dry
My Bosch dishwasher used to give off loads of steam when I opened the door after it finished it's cycle-now there is no steam and the plates etc are cold and not dry...Does this sound like the heating element? This dishwasher is approximately l0 yrs. old (built in).
Have you tried canceling the cycle? To cancel, turn the on/off switch to on, then press and hold for three seconds the two buttons labeled "Cancel Drain". Keep the door closed for the next minute so that the dishwasher can complete the cycle. During this time the pump will remove any water from the washer. Also you will notice that Bosch dishwashers always leave a little water in the system to keep the seals from drying out and going bad.
Hope this helps
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