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Mend Ariston A/23 MFFI Boiler Heating Pressure

Low water pressure indicator Ariston Eurocombi?

I have an Ariston Eurocombi boiler (A/23 MFFI) which has decided to stop working. The 'low water pressure' indicator has lit up- but the gage shows 1.5 bar - which should be perfect. I've taken it right up to 2.5 bar, then drained the system down to nearly zero, then back up to 1.5 in a bid to try and reset it - but still this indicator remains lit with no other sign of life from the boiler. Have also switched it on & off from the mains - no joy. Every time i turn it on, it remains completely silent for 1 minute and then stubbornly lights up the 'low water pressure' indicator. Any suggestions anyone?

Malcolm McKay
April 2008
AristonAriston A/23 MFFIHeating, Home Heating SystemsBoiler Heating Pressure
Thanks T, yup definitely the pump which i've now managed to replace.
Many thanks!

Malcolm McKay
April 2008
may be a pump problem, does the pump run?
do you see a 'slight' increase (then decrease) in water pressure as the pump kicks in?

I dont have a manual here for this boiler, so unsure if it uses a pressure switch or a flow switch, but either should be checked for continuity once the pump has been comfirmed to be working.

T
April 2008

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Ariston Eurocombi Low Pressure - Help!