my pressure keeps dropping to 0 on the gauge. i refill it to one and a half bar but after about a week it goes down to zero. do i have a leak under the floor or is there something wrong with my boiler?
The most common fault is pressure relief valve/safety valve not seating properly and allowing water to pass through the vent pipe outside.Tie or tape a plastic bag to the end of the vent pipe and see if it fills with water.
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