Help – Flashing tap light on NEFF S51E50X3GB/46

[HAD A-NEFF NOW]

HAD A-NEFF NOW wrote:It’s located in here on my machine on the LHS so I take it it’s replaceable without ordering this whole unit?

https://shop.ukwhitegoods.co.uk/0068…-metering-tank

So I replaced the Reed switch flow sensor after it arrived yesterday. Switched the machine on and no change. I still get the flashing tap light and no machine functions.

I did notice internally on the metering tank that a section is discoloured and has a loose piece possibly a seal on the side. Can you identify what this is and what its purpose is? Its integral to the sealed tank so I couldnt gain access. I’ve tried uploading a pic but it doesnt allow me to due to file size. If you look at the metering tank link you sent in the pic it’s the black square unit at the top 12 o clock position. This and the surrounding plastic is now pink on my metering unit

I’m lost here. And cant keep replacing items that dont rectify the fault.

Help!!!

[HAD A-NEFF NOW]

iadom wrote:In the pub atm so not sure if this will get through. A very common fault with exactly those symptoms.

So I replaced the Reed switch flow sensor after it arrived yesterday. Switched the machine on and no change. I still get the flashing tap light and no machine functions.

I did notice internally on the metering tank that a section is discoloured and has a loose piece possibly a seal on the side. Can you identify what this is and what its purpose is? Its integral to the sealed tank so I couldnt gain access. I’ve tried uploading a pic but it doesnt allow me to due to file size. If you look at the metering tank in my link i posted in the pic it’s the black square unit at the top 12 o clock position. This and the surrounding plastic is now pink on my metering unit

I’m lost here. And cant keep replacing items that dont rectify the fault

[electrofix]

did you check the wires from the flow meter to the board. had wires eaten by mice last year causing same fault

Dave

[HAD A-NEFF NOW]

I checked the visible wiring all looked fine. Mice are a long shot theres no evidence of mice droppings anywhere on the floor or integral to the machine

[electrofix]

worth a try

if wiring is ok and connection is solid to the board and water flows in when unit starts then could be a board problem

Dave

[HAD A-NEFF NOW]

The machine does absolutely nothing no water fill no pimp noises theres no function. Just the red tap light just flashes constantly. My 1st post describes the issue in more detail, and also what I’ve changed as I’ve gone along. If I change the board is it a straight swop out no soldering required

[electrofix]

so I assume the part you replaces was the inlet hose with the valve on the end

the red light comes on because no water is flowing in so we have to figure out why

first are you sure the tap is on. get a lot of these taps that move but don’t operate so if your not sure remove hose from tap and blow some water out of it to make sure

what happens now when you start a programme ?
the pump should run for a bit , then stop, I then expect it to fill

you could measure the voltage being fed to the fill valve to see if the board energises it. its a 240V mains valve

Dave

[HAD A-NEFF NOW]

electrofix wrote:so I assume the part you replaces was the inlet hose with the valve on the end

the red light comes on because no water is flowing in so we have to figure out why

first are you sure the tap is on. get a lot of these taps that move but don’t operate so if your not sure remove hose from tap and blow some water out of it to make sure

what happens now when you start a programme ?
the pump should run for a bit , then stop, I then expect it to fill

you could measure the voltage being fed to the fill valve to see if the board energises it. its a 240V mains valve

Dave

Hi Dave

yes I replaced the inlet hose with the water sensor attached to it. I was hopefull this was the issue but it had no effect.

The water supply tap itself Is fine it has ample pressure and the flow is there as well

I cant select any program functions whatsoever. The flashing tap light is hard fault and prohibits any program selection so I have no operability.

Happy to diagnose electrically if you can help me out.I have a fluke but am a novice to using it.

Cheers Steve

[electrofix]

well that’s odd for a start. you have a fault light but it wont start

and if you press and hold the start button to reset what happens ?

Dave

[electrofix]

well just read owners manual (always best place to start )

if the water light comes on its a fill problem

if the water light flashes its a technical problem and not necessarily a water problem and more like a general fault code. does the light have any pattern to it ? like 5 flash stop 5 flash etc
any other light lit at the time ?

what we are looking for is some sort of fault code we could go looking for. Neff info is not easy as they restrict it

Dave

[HAD A-NEFF NOW]

electrofix wrote:well just read owners manual (always best place to start )

if the water light comes on its a fill problem

if the water light flashes its a technical problem and not necessarily a water problem and more like a general fault code. does the light have any pattern to it ? like 5 flash stop 5 flash etc
any other light lit at the time ?

what we are looking for is some sort of fault code we could go looking for. Neff info is not easy as they restrict it

Dave

Hi Dave

Thanks for the reply. Oh I looked at the manual but didnt spot that.

Theres no pattern to the flashing light, it just continuously flashes. Initially the lower light was also on for the rinse aid but this has since cleared. Probably a bi product of the hard fault in any case.

I’m out the rest of today but will get back to you tomorow. I appreciate the help.

Cheers Steve

[BarryD]

I also have this problem with a NEFF S5IT69X2GB51 – the water light just flashes and pressing buttons has no effect.

Does anyone know if this problem was eventually resolved and if so what the culprit turned out to be ?

Thanks,

Barry

[electrofix]

all this tells us is that is has a fault but does not pin it down

are there any other lights on or flashing ?

Dave

[BarryD]

Hello Dave,

I should have been a bit more explicit – the symptoms seemed to be exactly the same as posted by ‘had a-neff now’ before he started changing things.

However I can’t remember for certain if the all the LED’s behaviour have always been identical but the situation now is:

Pressing power on button: After 5 seconds the water and rinse aid LED’s both start flashing constantly at about 2 flashes per second. The middle LED stays off.

I seem to remember when it was working it goes clonk a few seconds after powering on, like a solenoid activating. It doesn’t do that now.

Pressing the power on button again turns all LED’s off.

All other buttons seem to have no effect. I have tried short presses, long presses, very long presses, double presses and some combinations of button presses too – Nothing changes unless one of the buttons pressed is the power on button.

Filling the rinse aid had no effect on the rinse aid LED as would happen normally.

I have also tried unplugging for 5 minutes and try again but this also had no effect.

Barry

[electrofix]

from what i can see, the instruction manual says your has a display so if it had a fault code it would come up E06 or similar

has yours got a display ?

try checking the base for water flooding by either tilting it back slowly to 45 degrees or removing cover below the door and checking for water

Dave

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