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Potterton heatmax combi?

hi potterton heatmax combi 28he turn hot water tap on and radiators heat up aswell?

jeffrey
October 2021
Sounds like a faulty diverter valve.

https://www.superwarm.co.uk/troubleshooting-combi-boiler-faults-water-is-lukewarm/

Sndheh
October 2021
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