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Potterton Performa 24 Eco HE Water Not Getting Hot Enough?

The heating is fine and the temperature gauges are up full, have checked pressure but water temperature does not get any hotter than hand hot no matter what I try? Any Suggestions?
Diana, February 2013
you need to replace the domestic hot water thermister which allows the temperature to reach at a certain selected temperature. I hope this helps.

anjum, February 2013
needan engineer to fix it most likely a blocked heat exchanger or faulty diverter valve

kash, February 2013
link Click here to see other fixes for Potterton Performa 24 Eco HE.