Question about Bosch SHU5315UC Dishwasher

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Should the bosch dishwasher be hooked up to the hot water or cold water line when making the connection?

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5 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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  • 17 Answers

SOURCE: no hot water in dishwasher

there is a heater in the base of the dishwasher . It could be this is faulty as you can still use the machine .
It does'nt matter that you have connected it to the cold water tap the machie should heat up the water it self.this is'nt a job you can do your self so you will have to call out an engineer sorry

Posted on Dec 11, 2007

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Dave Duff
  • 30 Answers

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
48388b9.jpge86e8d4.jpg

Posted on Mar 10, 2008

wayneard
  • 1901 Answers

SOURCE: Do you hook up to cold water or hot water

Hot water.

Posted on Oct 20, 2008

Macmarkus
  • 2605 Answers

SOURCE: My Bosch dishwasher runs long.

Hello,

Welcome to FixYa.

Based on your description
I'd say the issue actually with the control...unfortunately.


**B/S/H/ also issued a recall on certain models between 1999 - 2006 depending on the model & serial number, you can check with yours, though many not included here still suffers from the same problem...you'll need the serial number too. Here`s the link if you want to see for yourself **

http://microsites.boschappliances.com/safetyrecall/dishwasher/


As I've alluded to the issue is likely within the electronic timer/control, specifically the heater relay solder joint. ( a faulty flow switch, ntc or heater can also cause this, but not very probable ).

If you feel capable of checking this on your own, there`s a way to visually inspect the control yourself...it really isn't very complicated.

It will require you to remove the control from the unit and then remove the control from it`s plastic housing and look for a burnt solder contact on the printed circuit board.


dabfa62.jpg


The culprit will 99% of the times be one of the pins from the heater relay,

9f1823d.jpg

**Flip this over and inspect the solder joints, it will be obvious when you see it.**

This ones new, but it's where to look...

9119d99.jpg


...hence the unit sit`s and takes longer & longer to finish because it can`t heat to advance or unless the 2 buttons for "cancel" are pressed...or takes a long time as I mentioned and eventually display's "1" on units with a display and usually very poor cleaning and obviously no "extra" heat ( aside from the water inlet temp. ) as a result.

You can also run the unit through a regular or econo cycle ...any cycle with the exception of rinse & hold, and with the door panel removed place an ammeter on the gray/black wire it should draw 11 amps during the wash cycle...after it fills and the flow switch indicates it has adequate water to engage the heater.

i.e.

f57273b.jpg
**My Opinion - if you or someone you know is proficient at soldering, a lot of times it can be remedied by simply repairing the solder...but it has to be done well...or it will not last, although Bosch recommend`s replacing the control and I don`t pretend to speak on there behalf nor do I profess to know better. This is just my experience (it work`s) and my opinion (why buy new if one can repair ?)**

**Please disconnect the power or turn off the breaker before attempting any service to the dishwasher.**


If you do not feel comfortable attempting this service, call a local pro, preferably one familiar with Bosch/Thermador/Gaggenau/Siemens, to service your machine.

Hope this answer`s your question, let me know if I can assist you further.
Thank`s for visiting "FixYa" for your repair inquiries. Please take a moment and rate this solution to it's helpfulness.

Good luck.

Regards,

Macmarkus :)

Posted on Jan 03, 2011

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1 Answer

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Most dishwasher should be hooked up to a hot water line. They do recommend that you run hot water in your sink before you start running your dishwasher.

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Hi.
Your dishwasher should never be connected to a hot water tap.
Every dishwasher has its own Heating element. If you connect it to a hot water tap you may eventually damage the inlet valve which has sensitive plastic components in it and may even void your warranty if your installation manual suggests Cold water connection only.
Regards Sam

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Hello,

Welcome to FixYa.

Have you insured the unit is connected to a hot water supply line ? The water will not heat until it start's to circulate and activates the "flow switch" in the Bosch dishwashers.

If it is connected to a hot water supply, try running the hot water at your sink taps before turning on the dishwasher. If you still do not have hot water, check your hot water heater or supply.

If it is indeed connected to a cold water supply it will work, just be prepared for very long wash cycles since the Bosch machines will heat the water at a rate of 2F per minute...it could take a long time to reach 155F.

Let me know what you find out and I'll try to assist you in any manner I can going forward.

Regards,

Macmarkus :)

Jan 28, 2011 | Bosch 23 in. SHU33A Built-In Dishwasher

1 Answer

Should be connected dishwasher only to hot water?


Connect it to cold water line only, never the hot line, the dishwasher has its own heating element to heat the water to the proper temperature for a clean and sanitized wash.

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Need install guide for bosch dishwasher model smu 2042 uc Need to know if it suppose to hook up to cold or hot water?


Hi,

Welcome to FixYa.

The dishwasher must be connected to an adequate hot water supply.

Adequate meaning a good strong rate of flow and pressure of hot water.

That should answer your question. Thank you for choosing FixYa.

Good luck.

Regards,

Macmarkus :)

Sep 04, 2010 | Bosch 24 in. SMU20 Built-in Dishwasher

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Dishwasher signals "clean" inside five minutes


I would check tosee if your water meaning hot water temp is hook up correctly. i have seen cold water going to machine and causing the machine to do funny things. 1 the unit drains.2. it fills.3.it washes if the water is cold there is your problem .make sure b4 you start machine the water going in is hot. let me know how you made out maybe we can further check. p.s im a old bosch tech:)

Jan 26, 2010 | Bosch SHE4AM16UC 24 in. Built-in...

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My bosch exxcell does not get hot and clean properly where is the thermostat situated?


There probably is a non adjustable thermostat. Is the washer hooked up to the cold water line?

Jul 07, 2009 | Bosch 24 in. SHU43 Built-in Dishwasher

1 Answer

Bosch dishwasher wont take in water through the cold inlet


First of all, the hot water line should be supplying the dishwasher, not the cold water line. That being said, if the machine is hooked up to cold water line, the only reason why no water is coming in would be that the valve is not open. Look under the sink to see if that is where the dishwasher line is attached to the cold supply. If not there, perhaps in the basement. Open that valve and you should have water.
Finally, if there is no water coming in and you have a lime deposit problem with your water it is possible that the line is full of lime and will have to be changed. good luck with this.

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Re dishwasher unit / sgs46m78au. water pipe/hose/ connections


The water connection is the smaller of the two and generally near the front of the machine, usually a threaded fitting on a electric solenoid will need a pipe to compression 90 fitting if its not already installed, it needs to be hooked to the hot water and that can be found on the left side going up to the sink faucet to be sure run some hot water and the side that gets warm is the correct one, you will need to turn off the water and install a T to connect the dishwasher if an unused shut off is not already there for the dishwasher. The drain line takes a hose and clamp and will hook into your drain iether through a dishwaser t or the disposal if you have one has a connection for it.

Dec 17, 2008 | Bosch SHU3305 Dishwasher

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SHU43C02UC


Dishwashers don't heat water to clean dishes. It is supposed to be hooked to the hot water line, make sure it is the hot water line.

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