Mend > Home Heating Systems

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

Ariston Heating, Home Heating Systems Low Water Boiler

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