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hi, boiler model would help, but could be one of a few possible issues, if it's only going to 1 - 1.5 bar on gauge then doesn't sound like expansion vessel as also if its making noises like banging its quite possibly the pump is stuck/sticking, normally exp vess probs would let boiler operate...

sorry to blow your assumption out of the water, but it actually took a lot of hard work, time and experience getting where i am at the moment regarding technical/gas skills. as for helping people on this site, there is only so far you can go with advising, as certain fixes for boilers need a...

[/url] i stand corrected :oops: possibly the few beers i had sank didnt help,lol

took the words right out of my mouth,lol! totally agree that the bolier is a tricky one :?

hi, can be a difficult problem to diagnose, but possibly air pressure switch dropping out in operation or could be the PCB not getting rectification intermittantly

yeh prv can sometimes stick or block therefore is the reason why engineers servicing sealed system appliances should activate them manually to confirm correct operation! it's just the fact that they can then fail and need replacing as to why many engineers dont test it, cos you've then got the...

tell the old chap to phone age concern as they will know what optoins he'sa got, cos if the boiler is 40 years+ would it be advisable to repair as most likely to contue to have issues and possibly in the cold weather too, gotta feel sorry for people in that boat if they've not got two pennies to...

depends on what cylinder and system you've got? if its an indirect open vented system then quite simply: if you've got mixer taps(must be mixing in the body of tap), then firmly(and i mean firmly) hold your hand over the outlet to block it (you may get a bit wet if you dont hold it hard...

hi, what is the exact model of boiler firstly?

hi, just wondering if there was a reason the pressure was over 3 bar? did you over pressurise? cos normally if pressure is over 3bar then the prv would activate and press should drop down, so my querie revloves around what is causing your pressure to stay over 3bar? sounds like something passing...

when powerflushing a system we always add cleaning agents prior to powerflushing as i agree a powerflush on its own may not always remove stubborn blocks. also it's a must that filters are fitted after with chemicals as magnatite can start up again as powerflushes are only an initial clean out.

central heating pump naffed

manufacturers only deal with the appliance and wont go into the systems

hi, could be either central heating sensor or sys could be restricted

sorry,forgot to add, even if a pump is faulty,it can still perform ok to give hot water as the circuit has less resistance

hey mate, restrictions in systems are not easy to find., any thing you do like take rads off or cut out pipe sections are only part fixes,the problem lies in the fact that your system is blocking and you need to bite the bullet and get a professional in to powerflush the system

sorry guys,caps is now removed from computer,lol, didn't realise and hope it didnt cause offense to anyone,cheers

:shock: sorry guys, new to all the forums, had a couple of people pick this up, not trying to be funny,only trying to help, hope i've not offended anyone, cheers

cool dan!! all im trying to say is that our job can bring devastaing issues if we dont do our jobs as well as we can, i really wouldnt want to see another gas engineer in jail cos he killed a familly due to not doing a quick safety check, sorry if i rubbed you the wrong way

HI GUYS, CENTRAL HEATING CONTROLS OPERATE BEFORE BOILER SO AGIAN WITHOUT BEING THERE WOULD SUSPECT VALVE