Plumbing/combi boiler - any help?

I would add that while you are at it, why not fit some isolators to the pipes below the taps? This way you will have far less trouble next time!

Call a plumber. What makes you think you can just replace the washers? Why more than one, it doesn't make sense I'm afraid what you are describing to do. The washers at the valves don't just start leaking by themselves - and if they did, it would only be one washer (fibre) not washers plural. A combi boiler is a sealed system, and potentially very dangerous if treated in the wrong way. Not all plumbers charge the earth, but if you realised the toil and cost of being corgi registered etc you'd understand why they may charge what they do. Don't touch it - if something goes wrong, your insurance most definitely won't cover you.

if u turn ur water off at the stop tap then turn all ur taps on this will drain ur system and then u can change the washer

also there is a reason why people are trained to do these jobs such as me which takes a 2 year course the only reason y i am telin u how to do it is because u will have to call out a plumber when it all goes wrong and that isnt because ur a girl even men cant do things most of the time without training

Inside the boiler cover there will be isolation valves for each circuit. (heating out, Heating in and Hot Water)

Identify which goes to the HW and shut the valve.

You can now change tap washers. (Allow water to stop flowing first.)

When finished open the isolation valve again.

This proceure does not involve gas and does not need a Corgi approved plumber.

PS you do not need to remove the boiler cover, just acces the water pipes leading to it.

It makes sense to switch the boiler to standby while working.

You could just turn off the main water stop valve to the house and if water stops at all taps - it usually will you can then proceed. With most combis all the taps are plumbed from the mains unless you have a cold water storage cistern in the loft.

turn off the cold water supply before it enters the boiler. then turn off the boiler, open the hot taps and the water will drain out. then change the washers!

(turn water on again before turning on the boiler)

extra: this applies to tap washers, that is what you meant, right?

If your on about tap washers, turn off the stop ****, open all taps from upstairs working down, and flush any toilets, open any shower valves, change the washers, turn the water back on slightly, as it comes through the taps in turn, turn them off, and then turn the water pressure back up.

call out a plumber and get the job done the way it is supposed to be done you cannot do it.

unlucky my friend you cant ,,