Solved

Calcified Stones In Pump

PUpullgees
Asked almost 14 years ago 6,565 views
0

Well I've never had kidney stones but I think my washing machine might have. These stones were as big as gravel and were blocking the pump. Were they formed by detergent or hard water, or a combination? They were whitish blue in colour.

Anybody come across these before, if so what were they?

Solution Summary

AI-generated from this discussion

This thread was marked as solved. Here's a summary of the problem and the fix, generated from the discussion below.

Washing machine pump blocked by whitish-blue stone-like deposits

The problem
The washing machine pump area was found blocked by gravel-sized whitish-blue stones. The original poster suspected a link to detergent and/or hard water. The pump impeller was in a separate compartment, so the motor was not reported as damaged.
Likely cause
The strongest supported explanation in the discussion is limescale build-up, possibly mixed with detergent residue. A combination of hard water and detergent use was suggested, but the exact composition of the stones was not confirmed.
What fixed it
The accepted advice was to carry out regular maintenance washes and ensure the correct amount of detergent is used for the local water hardness. This was presented as prevention and likely diagnosis; the exact make-up of the deposits was not confirmed.
Checks to try
  • Pump area found blocked by gravel-sized whitish-blue stones
  • Poster noted blue colouring similar to the detergent used
  • Forum advice suggested considering limescale issues
  • Forum advice recommended checking detergent quantity against water hardness
Cause identifiedGenerated 20 Aug 2026 · AI summaries can make mistakes — read the full thread below.
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3 Answers

Accepted Answer
0
WH
WhitegoodshelpVerified Engineer
Answered almost 14 years ago

Try these articles, which may help - Causes of grease and slime inside washing machines - particularly try doing the maintenance washes suggested there. Also, limescale issues sound like a possible explanation, limescale in washing machines

Whitegoods Help — appliance repair expert and forum host.
0
PU
pullgees
Answered almost 14 years ago

I read the article but no mention of those small stones. I always use Daz which as a blue compound in it and this same colour was mixed in the stones. Fortunately my AEG pump's impeller is in a separate compartment to where the stones were otherwise the pump's motor would probably have burnt out.

Anyway I shall be doing regular maintenance washes from now on.

0
WH
WhitegoodshelpVerified Engineer
Answered almost 14 years ago

There's no mention of the stones but they are likely to be made of limescale or at least prevented by carrying out maintenance washes and making sure you use the right amount of detergent for your level of water hardness.

Whitegoods Help — appliance repair expert and forum host.

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