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Mend Ideal R30 Boiler Pressure Fault Codes

R30 HE boiler loosing pressure?

My R30 drops in pressure from about 2 Bar to zero in a few days and consiquently no hot water after topping up with the fill loop everything is fine No fault codes and the CH works ok. there is staining around the relief valve on the expansion tank could this be the problem?

Cymro
December 2009
either prv isn't seating properly leaking (see spit pipe outside) or if pressure rises over 3 bar when heating is on expansion vessel is u/s and excess pressure will vent off

Mark gas engineer
December 2009

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