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Mend Ariston Eurocombi SX 20 Boiler Heating Diverter

ive been working on an ariston eurocombi sx 20?

ive changed the low water pressure switch and then the pcb. the boiler now fires up for heating but when the hot tap is opened although the needle on the diverter comes out and makes the micro switch the flame drops out and will not relight until the tap is turned off any ideas

adrian
March 2016

Ariston Ariston Eurocombi SX 20 Heating, Home Heating Systems Boiler Heating Diverter

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Ariston Eurocombi SX 20 - Hot Water Issue