Combi Boiler heats radiators when hot water only is selected.

ACJM · Jul 23, 2020

My combi boiler has started heating the radiators when I select hot water only. Any ideas ? The system has been in for maybe 10 years.

Aquarius · Jul 23, 2020

what is the make and model?

ACJM · Jul 24, 2020

Aquarius said:
what is the make and model?

Hi, It's a Potterton Promax Combi 28 Hea

ACJM · Jul 25, 2020

Hi, it's a Potter ton Promax Combi 28

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Combi Boiler heats radiators when hot water only is selected.