I don’t know if my combi boiler and system (a) has a water leak or (b) just has a faulty water pressure gauge. The gauge reads 0 bars when the boiler’s not being used and has cooled down. It reads 1.5 bars if it’s running. The boiler appears to work fine (hot water & heating works) even though the not-being-used water pressure is zero.

Any ideas?

ConfusedOfStreatham, December 2009

had sane problem on ferroli f30 changed expansion vessel ok now

john, January 2016

could be a pressure vessel fault may need recharging, vessel should be about .5 bar when cold, check with tyre gauge if low, pump back up with foot pump you may need a plumber to check this out
same answer for grahamS fault

Denis, December 2009

Ive got the same problems with a Grant vortex, but need to repressure mine every 2 or 3 days. Had no response to my plea - have you?

grahamS, December 2009