E10 Error on AEG L76475FL Washing Machine

[Tim-York]

My AEG Protex (L76475FL) washing machine has recently started giving an E10 part way through the washing cycle. This indicates there is a problem with the water supply or drain.

I have followed all the advice here (check water pressure / clean inlet filter / check position of inlet and drain hoses / clean pump & filter etc.). I even stripped down the machine and removed and cleaned out all of the internal inlet and drain hoses as well as the detergent drawer housing.

However, the error still persists. When it is displayed, I just press the start button and the wash happily completes without any further errors.

Any suggestions?

P.S. I tried searching the forums for AEG E10, but got an error that the search term was too generic. When I added the words “error” or “washing machine”, I got 34 pages of results all of which (on the first few pages at least) were nothing to do with an AEG E10 error…

[electrofix]

e10 errors are normally fill errors

look how quickly it fills. you could have a faulty valve and it may happen part way through the cycle as it may fill ok at first but the faulty valve may not be used till later

Dave

[Tim-York]

So, I’m still not getting anywhere with the periodic E10 error on my AEG Protex (L76475FL). Key info as follows:

• The E10 only appears sometimes (approx. 4 out of every 10 washes)
• It can appear on any programme
• The E10 will always happen at the same point in the cycle (29 minutes left on standard 40 degree wash with time save). However, sometimes that programme will complete with no errors.
• I measured resistance of both water inlet valves and both were showing an impedance of a few tens of ohms suggesting they are OK.
• I’ve thoroughly cleaned the inlet filter, pipes, dispenser housing and drawer and confirmed there are no blockages
• I get an occasional EFO (excessive foam) error, but that may be unrelated.

Are there sensors that detect water flow / drum level and if so might one of those be on its way out?

Any suggestions about what to test next would be very welcome!

Thank-you,

Tim

[electrofix]

there is normally a pressure switch to detect water height and some machines have a reed switch counter on the inlet valves

Dave

[Tim-York]

OK – so I took the analogue pressure switch off and measured the resistance when blowing into the tube (which wasn’t blocked). It stayed open circuit. Does this suggest that it’s likely to be faulty and worth replacing?

[electrofix]

analogue pressure switches are not really switches. they are variable reluctors that are measured by the timer/ if you blow in them you can destroy them

so you wont get a reading with a meter through them

Dave

[Tim-York]

Oh – so looks like I might need to replace it anyway 🙂 Is there any way that you can test them?

[electrofix]

Tim-York wrote:Oh – so looks like I might need to replace it anyway 🙂 Is there any way that you can test them?

no you need circuitry to read the output

all you can do is put it back and test it

there are a number of solenoids on the machine (2)

its possible one solenoid is faulty and filling slowly so it times out the fill causing your error. Have you checked for this ?

Dave

[Tim-York]

Hi Dave,

Some weeks ago, I put a meter across the solenoids to measure resistance and they both appeared to be OK (can’t remember exactly but several kOhm from memory). I haven’t tested them any further. I guess I could connect the water supply and put 240v across the terminals then measure the time to fill a 10 litre bucket..

The reason I didn’t suspect the solenoids was because the E10 error only happens sometimes.

Thanks for your continuine advice!

Tim

[electrofix]

well 2 things can happen to the solenoids

1 sometimes they will work ok for a few minutes then as they heat up they go open circuit

2 the internals wear so the water flow per minute goes down. if it is this is will only be on one solenoid and rememer that we have had some hot weather which lowers water pressure in some areas so valves that are just ok will fail to deliver enough water when everyone is watering the grass

Dave

[Tim-York]

Thanks – will do some testing this week. Good point about them being affected by the water pressure.

[andyjawa]

AEG and Zanussi double water inlet solenoids have, in my experience, commonly fail or rather only 1/4 work on one of the two solenoids so the water can only be little more than trickle = the machine then times out = E10; the resistance in the solenoid in such cases bares no relationship as it is a “mechanical” failure. BUT can also be a lime blockage on one of the two jet nozzles at the rear of the soap box.

There are 23 versions of a L76475FL I just picked 91453093903 version so you check on AEG own spares site using your machine`s PNC code as written off the cabinet label
Line drawing valve ref 507 part number 8588074876497 @ a bowel trembling £59.
Soap box double nozzle (called a conveyor pipe union) line drawing 853 part number 1325021101 @ a more respectful £5.50

Of course at 59 quid you want to make sure as much as you can that that is your problem which at a guess it will be. If the nozzle is blocked I never replaced that part as too much hassle and so I disconnected the 2 black hoses off the valve end and raised each pipe up one at a time and ran Kilrock descaler through each hose so it ran into the soap box- use one of those small plastic funnels as you do not want to get this stuff on your fingers and also beware of the stuff flicking out the pipe and into your eyes = really bad news that one so be warned. Allow 5 minutes to go by and then reconnect to the valve nozzles. From memoery the 2 valve`s nozzles are 2 different sizes so impossibe to misfit the rubber hoses back to the respective valve nozzles.

[Tim-York]

Thanks, Andy. That’s really helpful. I’m going to run some “real world” tests this weekend to check that actual flow through each of the solenoids. I’ve already stripped down the soap dispenser and cleaned out the pipes / dispenser inlet and jets, so it seems likely that it’s the solenoid that’s got a mechanical fault.

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