potterton promax combi he plus

Dear Community, My very elderly parents have a Potterton Promax Combi HE Plus boiler. It is under breakdown maintenance with British Gas to which each fault claim attract an excess fee. With that assurance of breakdown in mind, we have been having an ongoing issue with the boiler, one which BG...

Hi, I am hoping to replace an old thermostat with a Netatmo one, by attaching the four wires from the Netatmo into the Potterton boiler Terminal Block following the Netatmo guide (also here: ). The boiler is a Potterton Promax Combi HE Plus. It looks pretty straightforward except that the...