Neff dishwasher e:24 error

BiggieBig · 18 Apr 2022 at 14:15

Hi,

I get e:24 error on my Neff (S41T69N0UK) washing machine which indicates it’s a drainage problem. I have checked filters opened machine to check for blockages , checked drain hose and changed drain pump.

problem still persists funny enough it looks like the machine doesn’t even fill with water.

goldy6660 · 18 Apr 2022 at 15:02

Brand new? I had it on a new machine and the manufacturer had put a cap over the pipe intake for transportation - I'd event sent one back that had the same issue until I looked closer...DOH!

BiggieBig · 18 Apr 2022 at 16:24

Nah this is almost 10 years old now

Zefan · 18 Apr 2022 at 16:41

I had fun and games with E24/E15/Check Water error codes on my Bosch (very similar/identical designs to Neff) and in my looking I found someone talking about the flood protection float being stuck, make sure it isn't that. It kept failing at the water fill stage but telling me off about drainage.

My specific issue ended up being a blockage inside the tank (around some sort of floating rubber piece) on the left hand side of the unit. I had to take it off and flush the entire thing repeatedly to clear the blockage.

BiggieBig · 18 Apr 2022 at 17:19

Yeah I flushed the tanks as best as I could.

updated: checked the flood protection switch it appears to be working as expected.

SpeedFreak · 18 Apr 2022 at 17:22

If you have a hosepipe I would feed it into the drainage hose and do a reverse flush to see if it can dislodge debris that may have gotten stuck.

Mr.Cookie · 18 Apr 2022 at 19:20

If its like my neff they use a flow meter so count the water coming in rather than a pressure switch which measure water height. They run the drain pump for a set time period for each drain.

The flow meter is located on the side tank and quite easy to change
https://www.ebay.co.uk/itm/353048422684

SoliD · 18 Apr 2022 at 19:24

When you turn it on does it sound like it's seeking to empty the water 3 times then just turns off?

firstborn · 18 Apr 2022 at 19:28

SpeedFreak said:
If you have a hosepipe I would feed it into the drainage hose and do a reverse flush to see if it can dislodge debris that may have gotten stuck.

I did this with my Neff with no success. As it was built in I didn't fancy the hassle of pullling it out, resigned myself to having to call someone out and slammed the door shut really hard in frustration, which did the trick and its been fine since. Not suggesting you do this though

BiggieBig · 18 Apr 2022 at 21:09

SoliD said:
When you turn it on does it sound like it's seeking to empty the water 3 times then just turns off?

I think so I hear the drain pump running does this for a few attempts and then after 5-8 mins gives up with E:24 error

Zefan · 18 Apr 2022 at 21:52

Mr.Cookie said:
If its like my neff they use a flow meter so count the water coming in rather than a pressure switch which measure water height. They run the drain pump for a set time period for each drain.

The flow meter is located on the side tank and quite easy to change
https://www.ebay.co.uk/itm/353048422684

Giving this a whack while the flow is running can also dislodge the meter if it's stuck.

SoliD · 19 Apr 2022 at 07:36

BiggieBig said:
I think so I hear the drain pump running does this for a few attempts and then after 5-8 mins gives up with E:24 error

If you take out the covers at the bottom and get all the water out you can put your hand in the hole. You should be able to feel a tab on the side of the hole closest to you. Pull this up and out and a plastic t piece with a round hole will come out. In here is the impellor which likely has a small block. Give it a bit of a prod and poke with your finger and then replace the t piece and the cover and round filter. Then give it another go. It may not work first time but try a few times and you should eventually dislodge whatever is causing the issue.

BiggieBig · 19 Apr 2022 at 09:17

SoliD said:
If you take out the covers at the bottom and get all the water out you can put your hand in the hole. You should be able to feel a tab on the side of the hole closest to you. Pull this up and out and a plastic t piece with a round hole will come out. In here is the impellor which likely has a small block. Give it a bit of a prod and poke with your finger and then replace the t piece and the cover and round filter. Then give it another go. It may not work first time but try a few times and you should eventually dislodge whatever is causing the issue.

yeah that’s the drain pump I even changed it to make sure it’s not the issue. Generally the machine is very clean we always prerise the dishes before placing them in the washing machine.

BUDFORCE · 19 Apr 2022 at 20:17

Try leaving bleach in it, for several hours then run it on a rinse or whatever.

BiggieBig · 19 Apr 2022 at 20:35

Mr.Cookie said:
If its like my neff they use a flow meter so count the water coming in rather than a pressure switch which measure water height. They run the drain pump for a set time period for each drain.

The flow meter is located on the side tank and quite easy to change
https://www.ebay.co.uk/itm/353048422684

Wow I tested this and it’s closed circuit when it’s meant to be open. I removed it completely and the machine started filling with water. Obviously I switched it off immediately before it floods.

Now ordered a new one so hopefully this solves the issue.

Mr.Cookie · 19 Apr 2022 at 20:47

@BiggieBig I'll keep fingers crossed for you

BiggieBig · 29 Apr 2022 at 22:43

Mr.Cookie said:
If its like my neff they use a flow meter so count the water coming in rather than a pressure switch which measure water height. They run the drain pump for a set time period for each drain.

The flow meter is located on the side tank and quite easy to change
https://www.ebay.co.uk/itm/353048422684

It turned out to be the flow meter changed and now it’s all sorted.

Just wanted to say many thanks for the suggestion saved me a packet in call out charges. I would never had guessed it was this part.

Mr.Cookie · 29 Apr 2022 at 23:30

No worries, glad I could help