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Has the boiler been adapted onto an old system, i.e old pipework?

What an interesting read this made for me, a sort off bed time story XD. Rather than getting these 25ph engineers out, why not get your boiler covered by the likes of domestic and general etc. That way the engineers have to get it fixed or they will lose the contract.

We can help you more if you explain the problem a little better. Rather than a paragraph all clumped together, slow it down break it into sentences. What exact model of boiler is it, theyre numerous 28i boilers.

Hope this helps. 1.Measure volume of room in cu.ft. i.e length x width x height. 2.Multiply by 5x for living rooms/dining rooms, 4x for bedrooms, 3x anywhere else. 3.Add 15% for rooms facing north. 4.Add 20% for french doors. 5.Deduct 10% for double glazing. This will give the required...

Done 2 years of plumbing and 1 year of gas, done lots of lead work models, but havent actually worked on lead at all XD.

Well the best thing to do is next time the radiator makes the noise unscrew the trv head does the noise stop? :).

it will be the pin on the trv chattering back and forth more than likely, is it danfoss trvs?

is they're actually any problem?, when the hot water doesn't fire when tap open is the water hot? The boiler has a dhw preheat so doesn't always fire up straight away, as long as you have hot water they're is no issue.

oh bearsden DP im a faifley boy!. For your fault depending on the length your flue will dictate the size of flue restrictor you have in your flue if not the right ring explosive ignition :).

I wouldn't wait for the engineer to find a fault i would point it out to him, as it almost sounds like you don't want him to find it so that you can mention it after he's done. Sounds like plate heat exchanger although never assume the fault. The engineer will or should check the flow rate...

Never changed a wiring harness on any boiler.

Maybe £50, everyone charges differant.

no fit the plate heat exchanger mate then add sentinel x400 and then drain and add sentinel x100.

To me it means order a new plate heat exchanger less hastle, you can never properly clean these plates, the heating side that feeds to this part will be choked and dirty, doesnt have to be 93 maybe 85+.

Get a engineer to check the operation of the control knob first, if thats okay then i would be more than confident in ordering up the main pcb

Get a qualified gas engineer out to test the pressures on max and min and the inlet pressures, also to check the ntc primary sensor.

The venturi needs to removed and boiled in kettled water to properly clean this device. Common problem :lol:

To be more helpful on this situation, and find out if your plate heat exchanger is needing cleaned or replaced, try the following. Make sure hot water thermostat on the boiler is up as high as can be, then turn hot water on at whichever tap you seem to think it affects the worst. Now under...

Remove the electrode wire from the electrode, and then check for continuity from the tip of the electrode to the bottom of it ( where the cable usually sits).

Hi, they're is two temperature control knobs and a main control knob. Left knob = hot water temp. Middle control = ch/hw, off/reset, hw only. Right control = heating temperature. Which knob are we talking about here first, i am assuming the ch/hw? Also when you say when you turn it up...