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vinegar ... veg oil ...
Are you making salad dressing, or cleaning limescale from a dishwasher?
Vinegar is mostly water. You can buy liters of acetic acid on ebay for a few pounds.
Less smelly is citric acid, which is a few pounds for a few kilos.
(Or you could stick with your dressing, and squeeze the juice from 20 lemons)
Basic chemicals > condiments
Removing limescale might compromise any seals - not because they rubber / metal is being attacked (which is unlikely even with properly strong acid, let alone the weak acid in the above), but because the limescale may have formed behind the seals, damaging them in the process, and removing it may mean there's now a gap.
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Have you tried soaking the area with a solution of washing soda/soda crystals,
normally on the same shelf as soap powders in 1kilo bags for around £1.We also use it for every wash in the washing machine, to counter the hard water of Affinity Water, (was Three Valleys Water), in outer north west London.
Alternatively any of the scale removers based upon sulphamic acid,
which are often gelled, seem to work better around handbasin taps etc. -
We had this. Tried the above plus various versions of filling the base with hot water. There is also a video about how to take the bottom off to remove the pump and check for a blockage. This was relatively easy to do BUT when I did it one of the internal pipes split (it was pretty old and brittle)
Miele have a great customer service dept - they emailed me schematics etc and I was able to send them photos.
Ended up getting a service engineer out who identified a broken part and replaced it straight away. Cost around £100 all in.
Tldr. Might be fucked, call miele
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I had a similar problem with my Miele after re-installing it when our new kitchen went in. I borrowed the carpenters compressor and blew compressed air through the drain hose, sticking the nozzle of the airgun down the drain hole near the impeller and detaching the end of the drain hose from the plumbing. It cleared some junk from the drain and its worked fine ever since.
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NotThamesWater
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@hugo7
Our miele dishwasher inlet drain light is showing, and I wanted to bounce my logic off the hive.
The Internet gives two possible causes, 1) drain impeller
https://youtu.be/uLZX3AB2k5Q
I've checked the area is free of debris and the propeller spins freely. I've also opened the dishwasher after turning on and have seen it spinning.
2) circulation pump rotar
https://youtu.be/Ih9tfZ7k3Ns
I managed to get the impeller (?) to start turning using the fork trick in this video. Although the previous video I'd followed implied that you moved it sideways / left-right rather than rotating it, so I'm concerned I could have damaged it with my hamfistedness.
The error light went off for a bit, but is now back on.
We're in a hard water area so I wondered if soaking that area in vinegar overnight / for a prelonged period would help break down possible build up? Then give it another go after a good veg oil soak.
Any other thoughts / hacks?
Is there something stronger than vinegar I should be using? I'd worry about drain cleaner damaging the metal and rubber.
I'm happy to call out a repairman, but given I previously sorted the poor washing by giving it a proper clean, I thought I'd at least give it a couple of attempts.
Cheers.