Washing Machine Failed After 5 And Half Years. Manufacturer Says

The effects of grease and gunge inside washing machines is something I have important advice about here - Causes of grease and slime inside washing machine

This situation doesn't look clear cut at all, so it's difficult to argue that any one party is entirely to blame. Ultimately you may have a problem proving the manufacturer is responsible and that they should therefore carry out repairs at their expense. However, there are some grey areas, particularly with regard to how effectively washing machine manufacturers are warning customers about this sort of problem and what - if any - moral responsibility they have to do so.

If you want to pursue this, I recommend you get advice from a consumer group. I suspect that they may advise that your complaint is with the seller and not the manufacturer due to the way UK consumer law is designed. There are several useful links on this section of Washerhelp - Free advice on washing machine consumer issues (UK). It may be possible to take the seller to court arguing that the washing machine has not lasted a reasonable amount of time because the part that has failed has been manufactured in such a way that even normal use can result in a build up of damaging slime which corrodes it. And also that the instruction book gave no reasonable warning of this, or any advice that the potential fatal problem could be averted by doing regular "boil maintenance washes". However, only the consumer groups can advise how likely this claim would be to succeed.

Here are my more detailed thoughts which explain the above conclusions -

It's rarely necessary to argue consumer issues with a manufacturer, and because they aren't geared up for it it's also very hard to do. In most cases where a customer believes they have a legitimate complaint about the reliability or even longevity of their washing machine, contrary to the common assumption that the argument is with the manufacturer, in UK consumer law it is the seller who is responsible.

As the washing machine has apparently failed because of external influence, on the face of it, these influences are nothing to do with the manufacture or build quality of the washing machine. However, washing machine manufacturers have been aware of how limescale, grease and gunge can corrode and attack the aluminium-based drum spiders for decades but they continue to make them out of the same material and they do not appear to adequately warn their customers about this sort of thing.

The manufacturer has said that the washing machine failed because of your, "failure to maintain the machine", and that you should have carried out "maintenance boil washes". Your argument is that you have maintained the washing machine "strictly in accordance with the manufacturers provided users manual". If as you say, "there is absolutely no mention of the need to do boil maintenance washes in their owners manual" then how do they expect that you should have known? Even if it is advised, if there isn't a fair warning that failure to follow such advice could result in serious damage that could considerably shorten the life of your washing machine they can't reasonably expect a customer to make an informed judgement as to the necessity of even following such advice.

I personally wouldn't have thought that it is a fair assumption to say that it is common knowledge that if you don't do regular boil maintenance washes your washing machine could suffer a fatal breakdown. Although more people are becoming aware of it due to washing machine manufacturers starting to print this advice in the instruction books, it sounds harsh to say that it's your own fault - that you should have known. If this is the case, you may be able to argue that they new about potential serious consequences to not doing a boil maintenance wash but didn't adequately warn you so they should accept some responsibility.

I looked at several downloadable instruction books online for this manufacturer. The advice contained in them varies as they were printed at different times but I couldn't see any relevant warnings in the long list of "warnings" at the front of the books. Most of the instruction books just mentioned things such as -

"Maintenance: Cleaning your washer (inside) Run washer through a complete cycle using hot water".

Two points about these warnings

The reasons they give for carrying them out are only to keep the insides "clean" and prevent smells - not to prevent potential serious breakdown

There isn't even a hint of importance about them, or recommendation of how often to carry it out.

To be fair though, I don't know of any washing machine manufacturer that adequately warns their customers that they need to do maintenance washes to help prevent the premature demise of their washing machine. If I were in your position I would be arguing that

You bought their washing machine and used it in accordance with their instructions

You had no way of knowing that you needed to carry out their boil maintenance washes and more importantly, the potential consequences of not doing do

This problem is not common knowledge, and as they know about it they should advise their customers properly

I would also ask if the instruction books for their current washing machines do include such advice, and if so (as they ought to) doesn't this prove that you were not advised properly?

You can certainly try pressing the manufacturer further. There's always a possibility they may capitulate on the grounds of good customer relations or at least offer to meet you half way, but it's also possible they may be afraid of accepting any liability. As I say in my opening paragraphs, legally, the liability in consumer law lies with the seller.