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I've been considering a MagnaClean filter - are they really as good as the publicity suggests. Do I still need to Power Flush the system first, or will the Magna Clean filter suck it all out? Thanks,

And the sytem is pretty bad - I've had 3 (or 4 - I can't remember) new heat exchangers due to crap in the system. I think it definately needs a good flush out. Think it is all sitting in the bottom of the radiators as they seem to be colder at the bottom than the top.

Yep, the RCD had tripped, and tripping all the socket circuits (including the boiler one) as well with it. Turning the boiler MCB on now trips the RCD again. It's a pain the boiler doesn't work to help dry the sockets out!

A plumber/boiler engineer friend is going to power flush it. Unfortunately he has just gone on holiday for 20 days, otherwise it would have been him that was putting the inhibitor in (and getting wet). Thanks for the advice though - I can see why a power flush could do bad things in the...

Are you suggesting I use WD 40 insde a plug socket?

Yep, I want to stay dry. That inhibitor stinks as well as being rather expensive. Grrrrr! Oh well, was going to power flush the system in a couple of weeks anyway so I can check and replace it then. The inhibitor was just to tie the system over as I've had a few parts replaced on it and I...

Sorry, I should have typed RCD not RCB!

Consumer unit is of the newer type, with both the normal mains elec off switch and an RCB (mid way through the CBs), which seems to control the sockets and other circuits in the house (not the lights though). Basically the whole system tripped off when I wetted the boiler socket by accident...

It's def not the RCB as I reset that to see what it would do when I was trying to get the other CBs to work (and there is a little yellow button on it). My CBs just seem chunkier, but the little switch on the front is the same size. Unfortunately it is at my tenants house so I have not got a...

So do I! The boiler is in the loft, so I think that apart from the sockets that got sprayed up there, everything else has excaped. There wasn't enough water to drip down through onto the top floor. Do you think maybe it is just the 3A fuse that would have blown in the fixed socket? Is...

The consumer unit was only fitted a couple of years ago, so it is a newer type.

I hate to admit but I had a bit of a leak with the boiler, and water sprayed onto the boiler plug, which not surprisingly short-circuited the whole system and tripped all the CBs in the consumer unit. I managed to reset all the other CBs, but the one for the boiler circuit will not re-set. I...

Hi One of my circuit breakers has blown and when I re-set it, it trips the whole system. Do I just need to replace that CB? It seems wider than the MCB I have seen pictures of on the web - is this normal? ALso, I tried to pull the old one out to get the rating and I couldn't - are they...

Hi Just tried to put some inhibitor into my combi boiler via the filling loop. Checked the connections and the only place the adaptor nut (that goes onto the can) would fit it just prior to the non-return valve (ie without using the actual loop). It went in fine, but when I tried to take...

Yep, I know, especially if I am calling them out this frequently! Think I'm going to have to learn how to take it off myself, although it is located right at the back of the boiler and has proved a pain to get off. Is it a difficult job?? I'm surprised that the last engineer that attended...

Thanks so much for everyones reply. I saw the heat exchanger taken off last week, and it had lots of black gunk/particles in it - I could see why the DHW wasn't working. However, the filter was clean. The water in the system is clear though (with the colouration from the inhibitor), but I am...

Thanks - unfortunately I don't personally know the engineer who fitted it. I have spoken to him and he promises he flushed the system when he installed it. And I've had it normal pressure flushed again since. It's a pain as it is a rental property and I think my poor tenants are pulling...

So you think that a powerflush and a decent amount of inhibitor should solve the problem?

Hi I am on my fourth secondary heat exchanger on my Heatline Solaris Combi 30 - the boiler is only just over 2 years old. The boiler engineer took the last one off only last week, and it was full of black particles, which when rubbed between my fingers broke up. I had the system flushed...

Hi Oilman and thanks for your reply. I didn't vent the boiler itself when I did the radiators, I must admit I didn't consider it. Not sure why the engineer didn't replace the gauge when he serviced the boiler, I guess as it all seemed to be working fine it was a bit of a cost shortcut...