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Yes, the only thing holding me back really is having the correct tools for the job and anything else I might need such as thread sealant and knowing how to drain the boiler as it says in the instruction manual. I'd love to do it with expert instruction. Knowing my luck, I'd get it all put...

That's poor form, I guess the world is full of them. I believe in a job well done deserves instant payment, I've never delayed. 8) I'd be happy to have a crack at replacing the diverter valve myself as I'm pretty handy with the tools, however, a Boiler is more than nuts and bolts and I'd...

PS: Just so as everyone knows, I am VERY VERY grateful for all your advice on this forum, makes it much clearer than listening to a cowboy! I do NOT consider you guys to be Cowboys....just wanted to clear that up. :D

HANG ON! There was no mention of them coming back a week later, they said they will be here all day. So, if it is normal to leave the chemical in all week, how are they expecting to do it in one day? :shock: And Plumbers wonder why their trade has a bad reputation for cowboys....so many...

Well, he tried to balance them, he went round adjusting all the rad valves and checking the thermostatic valves, but it was a cursory go, he was only there to service the boiler (which they have so far not charged us for)

Undid the nut on the end of the pump, it seems to turn ok, was spinning madly under the hex top nut. What I find odd is that the rads CAN get quite warm, but only after hours and hours (12-24) and the pressure gauge on the boiler is creaping up to 3bar +. Does this tally up with the Diverter...

I did this and left it for an hour to make sure, there was no difference in the heating, none of the rads got any warmer. Strike One!

Surely not if I've just had the system flushed? If only I could find a chappie like yourself nearby! No, not got a heat gun. Why?

Tony, Is there any way in which to diagnose if it is the pump or the diverter valve without actually replacing them or is it a swap-out and see job? Thanks Adam

Just a quick one. In general, how much would I expect to pay over and above the cost of a new boiler for the installation considering it to be a direct replacement (a combi with a new combi)? Would it be as much as doubling it? No flushing will be required as I'm having that done anyway...

The boiler fires up on the CH then after a few seconds goes out again. Last night was another total weird one. Left the CH on all night, I woke at 4am to find the rads all warm (not hot despite it having been on since 5am the previous day), by 8am they were all stone cold and the house was...

OK, thanks for the replies, I really wish we had a friendly plumber nearby but we don't so we'll have to do what most people do, pay someone to bugger about until its fixed. To answer the most recent points: The system was balanced by the chap who came to service the boiler but its no...

OK, its not a Powerflush they have quoted for, its the chemical flush. I rang another local plumber and they quoted £400 too and said they did not do the Powerflush as they feel the soft flush is better for your pipes etc...(how would I know?) Here's some more symptoms: If heating is on...

OK, had the plumber chappie out, seemed a good egg and not a BS merchant. His observations were that the circuit board has been replaced at some point and pointed out the scorch marks in the top left corner behind the current one. Large amount of dead spiders indicated lack of servicing...

I believe the house has brick cavity walls although I'm unsure so far, roof was replaced in the past 15 years so has felt liner etc. I also don't know if there is loft insulation. I have no idea how much sludge there is in the system, I have a boiler engineer coming out today to do an...

Ok, just moved house, its an older property (1926), 4 beds, 1 bathroom, 1 shower/WC (but with an electric shower). House is double glazed too, however...... House has a Potterton Puma Combi boiler (can't recall the model number off by heart but it looks big!) Hot water generally seems ok...