Hot water sometimes Ariston A23

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Hot water sometimes Ariston A23

Postby Plumlec » Sat Jun 03, 2017 11:44 am

Hello guys

This is an Ariston Combi. Central heating is OK. But hot water temperature low, not even warm enough for a shower.

Now, in order to have shower I have to put the central heating on and hot water flows without any problem.

Any ideas on this please.

Thank you. :)
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Hot water sometimes Ariston A23

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Re: Hot water sometimes Ariston A23

Postby kfordgas » Sun Jun 04, 2017 9:52 pm

Hello and a warm welcome to the forum
It's either the diverter valve passing or plate heat exchanger blocked with iron filings. This is common on this boiler.
Thanks
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Re: Hot water sometimes Ariston A23

Postby Plumlec » Mon Jun 05, 2017 8:03 am

Many thanks.

Assuming the heat Exchanger is blocked how can it be rectified ?
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Re: Hot water sometimes Ariston A23

Postby kfordgas » Tue Jun 06, 2017 4:04 pm

It can either be cleaned with a descaling agent or replaced with a new one.
Cheers
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