Combi boiler hot cold issue

4 Dec 2017
Reaction score
United Kingdom
Hi we have a 5year old worster bosh 28ijunior it's been running through a water softener for 5years also. So when we run a shower/ bath water goes hot/warm/hot/warm and so on. Run the hot alone stays hot. I bypassed water softener still same issue.

Any ideas would be greatly appreciated
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A better description would be greatly appreciated...can you expand a little please? It's not entirely clear what your problem is
The water goes hot to warm hot to warm and so on, doesn't stay the temperature?
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