gsexr

System do develop leaks mate but they are usually slow and lose pressure over time. If the pressure loss is over night mate its most likely the expansion vessel. Initially the pressure loss is because the diaphram develops a pin hole and the system water passes through it to the air side. You then top it up and it happens again. Eventually the air side of the expansion vessel gets full up and the PRV ( pressure relief valve) will let go to allow the pressure out. Its just expansion as the system heats up and that has to go somewhere, hence the expansion vessel. Its pretty standard heating stuff mate and no biggy. Dont get stressed with it. Replace the expansion vessel in the boiler or add another to the system. One consideration as you have had new double rads fitted is that the system volume is now too much for the size of expansion vessel in the boiler but you could google your boiler model and see how much volume it can take. Then you have to look at total number of rads and the size of them and see what that volume adds up to. Then if its close consider the pipework. But lets not get ahead of ourselves, just a point to consider. Where are you located ?

yep expansion vessel. The system is highly unlikely to spring a leak that loses pressure overnight unless someones put a nail through a pipe etc. The expansion vessel has a diaphram inside that will be failing. You can re charge them but best to replace in the long term. Over night the system cools down so the pressure goes below the minimum acceptable for the boiler to run hence it flashes up a fault code.

Austin Maxi 1750 as a company car when i was 20. Not too great for a young fella`s street cred...

Purple Rain is a total classic https://www.youtube.com/watch?v=EsRUAoUvP10

Spotted in Callington today

Got to be my motorbikes cause they always put a smile on my face

Still one of the most beautiful car shapes ever produced and this is going to be a corker..... all credit to you sir

happy birthday to yer, happy birthday

Looking good

Fair play to you mate cause at least that sounds like your being positive and that can be uplifting for all parties involved

Without a doubt my favorite ever post on this forum. I am loling everywhere even the cat looks like WTF

This post intrigued me from an English language standpoint. Is it poor grammar to coin neologisms? With terms like Zeditis being bandied about the boards I would have thought Zedicated was a natural partner. read that twice and still dont understand it

very nice

I do like a white motor even with that marmite back end. Keep it original as that`s where the value is.

Seems to be a common theme with you buying cars and wanting work carried out under warranty............. Be interesting to see how this one pans out

best colour

ordered a new palm sander.... Great spot that man

Top marks for DIY liking the diamond finish