20 Most Recent Neff 18 in. S5943 Slim-Line Built-in Dishwasher Questions & Answers


Start a cycle as if there were dishes in it so the pump will drain the water out.

Neff 18 in.... | Answered on Feb 15, 2018


Yes the beep tone is variable down to nothing.Suggest downloading manual from Neff website in pdf form for instructions.

Neff 18 in.... | Answered on Oct 23, 2011


Hello, welcome to FixYa.

Based on your description I'd say the issue could be the control...unfortunately.


As I mentioned, what you're describing is commonly associated with a heating fault on Bosch built dishwashers, insure your water coming in is at least 120F...cold water inlet temp will make it run extremely long ( this applies to various models including Bosch, Thermador, Siemens, Gaggenau, and Neff ).

If you feel capable of checking this on your own, you can activate a "diagnostic" through the electronic control, but there's a better way (in my opinion) 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. (this may differ from yours...it is just an example)


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.**

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...this can also manifest as a long cycle time as I mentioned and eventually display's "1" on units with a display and usually very poor cleaning, no heating ( don't be fooled by the homes inlet hot water temperature ) 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. ( this may differ from your specific model, but the same rules apply )

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.
Bosch recommend`s replacing the control and I don`t pretend to speak on their 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.

Let me know what you find or if I can assist 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 :)

Neff 18 in.... | Answered on Sep 22, 2011


It is possible that the machine does not start off the cycle because there are errors or feedback from the inputs. For the program to start up the main program controller must initiate the INLET/PUMP MOTOR/DRAIN to work when it is commanded .If this does not happen then the voltage at these points must be checked or the fault relates to no voltage/drive from the controller. This means the controller is a suspect.

Check how to remove the control panel: http://www.espares.co.uk/advice/dishwashers/a/3/1287/how-to-replace-a-hotpoint-dishwasher-fascia-p.html

If the water flows then the flow should be good, if not the inlet valve is bad or there is dirt in the filter. Also check the flow at the inlet of the water line. What is most important for the motor to start functioning is that the door switch must be ON when the door is shut or this will be an error for starting the motor. The water pressure must be good and the spraying must be seen to be good. If there is low pumping or pressure then the spray arms will not turn around to inject with pressure. If so the pump must be checked for clogging.

To replace check this link:

http://www.espares.co.uk/advice/dishwashers/a/3/1293/how-to-replace-the-spraying-system-on-a-dishw.html

Finally after the wash the drain valve will be activated, the water is allowed to come in to rinse and then finally the drain valve/pump activated so as to drain off all the water.

Make sure that a fault in any of the cycle will relate to the specified action, so check the command from the program module and then the executing device be it the valve or motor or pump.

Please check the link below:

http://www.espares.co.uk/advice/dishwashers/a/3

Thank You for using Fixya

Neff 18 in.... | Answered on Sep 17, 2011


may be the electric valve on the incoming water line is broken or too low water pressure, may be also the program knob is faulty or the cpu does not give signal for the electric valve to open when u select the program

Neff 18 in.... | Answered on Mar 13, 2011


It is very likely the door seal is leaking. Try again in the rinse cycle and see if you have the same problem. The water should not be warm this time but that will confirm if it is related to the duration of the wash cycle.

The details of the door seal are available at the NEFF parts website. You will have to select the assembly dwg 3 from the interactive screen to see is part no.

Hope this helps.

Neff 18 in.... | Answered on Aug 26, 2010


I would check for blockage, can you hear the pump trying to drain.
pull all the metal pieces ouy and have a look.

Neff 18 in.... | Answered on Feb 23, 2010


When the detergent cup doesn't open, check these:

Timer
Bi-metal switch or wax motor
Detergent cup, itself
Timer On many dishwashers, a plastic actuator arm mechanically links the timer to the detergent cup. When the timer reaches the proper time in the cycle, the timer activates a lever that opens the detergent cup. If the linkage is broken or defective, the cup stays closed after you've closed it. Check the link and repair or replace it, as necessary.

Bi-metal switch or wax motor A bi-metal switch is a simple electrical device that deforms when electricity is applied to it. The degree of this deformation can be engineered to concise standards.

The timer energizes the bi-metal switch inside your dishwasher door--directly behind the detergent cup--when the detergent cup should open. When energized, the bi-metal switch deforms away from the detergent cup latch, which opens the detergent cup. If the bi-metal switch is defective, it may not deform enough to open the cup. If that happens, you need to replace it.

On some dishwashers, the bimetal switch is wired through the heating element or motor circuit. If the element is broken (or open), or if the motor is drawing low current because of a low-fill situation, the bi-metal switch doesn't open properly.

Newer dishwasher models use a wax motor instead of a bi-metal switch. It's a sealed unit with wax that heats up and pushes a piston through to open the door. The wax motor, controlled by the timer, mechanically opens the door.

Detergent cup, itself The detergent cup itself can become clogged with old dried detergent that prevents it from opening. Sometimes just cleaning the cup takes care of the problem. If not, you probably need to replace the entire cup assembly

Neff 18 in.... | Answered on Jul 06, 2009

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