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home Fix label Heating label_important Home Heating Systems category Ariston

how to lower water pressure on a combi boiler?

gas boiler wont fire up.water pressure at 3.5 bar .when switched on pressure goes to 4bar and shuts down.how do i get water pressure down to 1.5 bar.make of boiler is ariston microcombi23/27 mffi type c
pnicholl, March 2009
home Fix label Heating label_important Home Heating Systems category Aristondone
by letting water out of the bleed valve on any of the radiators. the real isssue is why pressure is rising query expansion vessel. make sure the water inlet pipe to top up pressure is not leaking.

Ben, March 2009
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