I have a bit of a strange problem at the moment and was wondering if anyone can shed any light on it...
The setup... During our property renovations, we had our whole house replumbed including new boilers (2) and gas pipework from the meter. The pipework from the meter is 32mm (I think - essentially the largest a regular plumber can fit) which goes about 3m to the boilers where they are tee'd off and around another 5m to the gas hob. I can't recall the pipe size from the main run to the boilers (approx 0.5m each) but assume it is whatever the valve size is on the boiler.
The problem... Intermittently (approx twice a week) we have had one or both boilers locking out and the error code is something along the lines of "gas supply problem/ can't light etc.". In addition, on occaision (twice a month), when using the gas hob, the pressure goes low then usually returns after 30 second or so. We have switched one of the boilers off for just over a week now and no issue yet.
The diagnonsis... The plumber has checked the gas pressure a couple of times and it all seems fine. He seems reluctant to call out Transco until he can see the issue/ measure a pressure issue so is coming back in a few days to check the boilers.
Given the issue happens to both boilers and we have seen the hob issue, it seems to me that the likelihood of both boilers developing the fault is low and it must be something to do with the gas supply. Is this possible? Can the regulator intermittently work and fail?
Any other ideas?
All help appreciated.