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Hi, The pressure slowly falls over 24 hours, I have pumped the PV to 1.5bar the valve appears to hold ok checked with soft soap and checked the prv outlet, (dry). The system works ok rads heat up, hot water fine, what am I missing? Thanks, JC

Combination boiler pressure dissapates over 24 hours can be reset but goes again. not all Radiators are now heating up. Is it a leak if so where is it likely to be? System is 7 years old. Thanks.

My house alarm is a Rascal+ and one of the pirs is unreliable. Is it easy to change and are all pirs similar.

Boiler 4 years old hot water has recently become slightly discoloured, pale yellow/orange. Supply to boiler clear, checked hot water from immersion with boiler off, its clear. Is this the beginning of a corrosion problem? If so what can be done?