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Sounds like a problem with your gas pressure or blockage in gas pipes. Call a gas safe plumber to investigate.

Right I'll try 1.2bar on weekend, I need to set this when the vessel is drained of system water yes? Thanks and I'll repost on the results of my 5th visit to the property in 5 weeks!

Not 100% sure but I think the pressure is only rising when system is hot. So I don't think it's a split plate hex. But I'll check for sure on weekend. Thanks

Did you recharge/ fill the system again after venting/bleeding the rads?

I need some help! I've got a betacom with a split exp vessel, due to the limit space and time I have to work on the boiler I fitted an external expansion vessel. The vessel is located on the the second floor of a three storey house and the boiler is on the first/ground floor. Im still having...

anyone fitted a 'reflex' expansion vessel from screw fix? do I remove the seal or leave? cheers

ok, been to property the vessel is split, I bought a 12lt Reflex expvessel but when I took it out of box the water inlet has a softish plug inserted. so I took it back thinking it was a mistake in the manufacturing process, but the 8lt version also has the same plug in the end? so I'm...

boiler pressure whilst on ch demand pressurising pretty high since install (4 yrs ago) now tenant says pressure is 4 bar with prv leaking. I'm going up tommorrow and assuming pv is damaged aim to fix by sticking an external pv. the question is:- if I fit a new pv should I fit the same...

priced up a new DHW h/e. omg! £360! but luckily it's not the problem:) was only able to spend 5 mins with boiler today and the boiler is firing when tap is open but no/little heat from tap, but the ch circuit heats up. so the diverter valve is shot. I'm guessing the fact it fires means...

wtf. bit harsh.....?

probably the diverter valve, call an engineer

no chance of access on right hand side it's up against a wall!!! left hand side is accessible though. how about flushing the h/e in situ, if I stick some system cleaner in? is it still possible to replace with no acces from right hand side of boiler? cheers

Hoping if some knowledgable people can help me out. it looks as if the betacom I installed (4/5yrs ago in my property) has a blocked plate h/e, even though the system was brand new rads and magnaclean:/. is it possible that the problem is not the h/e? if I replace the h/e what washers do I...

if your on about the cold feed to the cylinder gate valve, as long as it is above the height of the cylinder you only have to drain the tank and then replace valve. if u do buy a bung kit (they are brilliant) DO NOT BUNG THE VENT PIPE ON THE TANK THAT SUPPLYS THE HOT WATER/CYLINDER!!!

really, why have i never seen them? thanks

i always use 22mm unions with a 28-22 reducer in work (thats what the company supply) but seeing as i need a 6m 28mm supply in my own property i was wondering if there is such a fitting? i understand from my apprentice years that it is not needed but just checking. (its my own house so i want...

not sure you will no answer to this but.. is it a 2 or 1 pipe system?

if its a combi and hot water is fine then the pump is ok, if all other rads are turned off and they still wont heat then it is probably a blockage in a pipe that is common to the two rads, is the pipe work to the rads 8,10 or 15 mm. and are the other rads downstairs all working? and are the...

turn heating on and feel the 2 rad pipes to determine which is flow (which ever gets hotter first is the flow). keep trvs away from curtains, sources of heat and draughts if poss, keep away from the door if u can i install them horiziontal opposed to vertical to keep sensor head away from...

i have just bought a house (100years old) with 2 stacks all sealed at bottom, each stack services 4 fires (or did), the first stack is through the roof and the other has been reduced below the roof so it terminates in the loft. what are the recommendations regarding free air size for...