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Mend Ariston A23 MFFI Home Heating Systems

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Mend Ariston A23 MFFI Boiler Hot Water Pcb

my ariston a 23 mffi gives intermittant hot water ?

when calling for hot water the flame keeps modulating between high and low flame even though the water is still cool, could this be the pcb? if so which one as their are two, if not pcb what else could be the problem?

mick
January 2010
AristonAriston A23 MFFIHeating, Home Heating SystemsBoiler Hot Water Pcb
I have no hot water at all even when i have the rads on what can this be please

keith
January 2011
thanx, fitted new thermistor today and hot water now perfect

mick
January 2010
many thanks will try that and see, are these the ones on the diverter valve?

mick
January 2010
try replacing the sensors first, they cause a similar fault & are much cheaper

Ian
January 2010
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