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how can i fix my ariston combi 27 mffi?

how can i fix my ariston micro combi 27 mffi water pressure dropping and boiler shutting downwater draining through overflow pipe
John carson, December 2008
did you check the PRV? if your pressure is not over 3bar the the PRV is not close or faulty

Delta, January 2009
Check first to see if both the taps on the filling loop are closed.

DL, December 2008
link Click here to see other fixes for Ariston 27 MFFI.