No hot water unless immersion is on

7 Nov 2016
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United Kingdom
Hi all,

Recently installed a nice little shower pump ....... and shower/taps mixer as our new flat only had a bath.

Only problem since turning everything back on is that we don't get any hot water from the cylinder unless the immersion is on. Obviously going to be costing us a fortune in the long run. What's likeliest to have knackered?

Any advice appreciated
Last edited by a moderator:
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It is a gas boiler and hot water cylinder system. "Burner on" is still regularly lighting up on the boiler and feels hot.
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Needs to have hot water selected and a check to see where the heat is going!

or an engineer to do that for you!


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