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  1. M

    Flushing the heating system on Grant Combi 90

    Does it matter what rad I do downstairs? One nearest the boiler or not? Also, I want to remove one of the rads upstairs as there is old wallpaper and paint behind it while it's off. I can do that one when I do the one downstairs? Cheers
  2. M

    Flushing the heating system on Grant Combi 90

    OK, so what do I have to do next?
  3. M

    Flushing the heating system on Grant Combi 90

    Are we saying to just do one of the rads downstairs?!!!
  4. M

    Flushing the heating system on Grant Combi 90

    easyflow, that sounds like a lot of work! I have 15 rads in this house! Is there not an easier way to do it?! Talking of 14 rads, should I have 2 lots of inhibitor as they say that 1 is enough for 10 rads? Cheers
  5. M

    Expansion Vessel explained please...

    Cool, thanks for that guys. How long do these normally last? And why is it everyone I have spoken about this, they have just said, it's either the PRV or there is a leak!
  6. M

    Expansion Vessel explained please...

    OK, that's great! That explains things!!! Can't wait for this part to turn up so I don't have to huddle around the fire in the front room! It would have to fail just as the UK is about to be hit by another cold spell! TYPICAL! Thanks guys (and girls!)
  7. M

    Potterton Combi Boiler loosing preassure

    Sounds like you have the same problem as me, Expansion vessel. Press the "tyre like valve", if water comes out, u need a new one. in the process of sorting mine out too! What is happening, is the pressure is getting 2.5 bar and the pressure relief valve is opening (to stop the boiler over...
  8. M

    Expansion Vessel explained please...

    Hi all I have a grant combi 90 with a faulty expansion vessel (going to be fixed by the weekend hopefully!) just wondered if someone could explaing the expansion vessel. I thought I understood what it does, but after leaving the heating off and just using the boiler for hot water, the boiler...
  9. M

    Flushing the heating system on Grant Combi 90

    Can anyone help me?! i am gonna do it this weekend. We currently have no heating in this cold snap! Had the fire on last night, but that only heats the one room! I fear if i can't flush the system, I will end up just replacing the expansion vessel and just putting the inhibitor in. I would...
  10. M

    Flushing the heating system on Grant Combi 90

    hehe not much, seems pretty clear but this is only from the bleed valve, as I have not taken any rads off the wall yet. I have been topping up the system for quite a while and I know the previous owner was topping it up every month or so, so I reckon it could be pretty manky in there! As I...
  11. M

    Grant Combi 90 losing pressure

    I have ordered the vessel and auto air vent from oilboilerspares.co.uk Is it just a case of topping up the system (after a flush of the heating system and topping that up first obviously!) Will the vessel come pre charged to the correct pressure? What should the pressure be set at? Thanks
  12. M

    Fitting new bathroom light?!

    Hi all, I have bought a bathroom rated light for our en suite. It has a simple live/neutral/earth connection inside. I went to remove the old ceiling rose to find that it has got 2 switch live, 3 live, 3 neutral and 3 earth! The original rose is catered for all these wires. The new light has...
  13. M

    Dry lining and new ceiling...

    Hi all, I am going to attempt to dryline my garage and put a ceiling up. I need some advice... First of all, the garage is just brick inside with the rafters showing etc, and I would like to have a gym in there eventually. I guess I put plaster boards up first on ceiling, then dry line the...
  14. M

    Flushing the heating system on Grant Combi 90

    Bump, sorry! I need some help with this... PLEASE!
  15. M

    Grant Combi 90 losing pressure

    ANYONE?! I got an email back from Grant directly. They are doing the PRV for a mere £17 + vat, should i get 1 of these as well as it's cheap? Cheers peeps!
  16. M

    Flushing the heating system on Grant Combi 90

    This is an extension to a previous post, which thankfully you guys have helped me work out what was faulty with the boiler. When this is fixed I would like to do a chemical flush.. I can't find any drain points on any of the rads. So I have the feed and exit on the combi via the chrome flexi...
  17. M

    Grant Combi 90 losing pressure

    OK, thanks. Can someone just confirm for me, is it DEFINITELY the expansion vessel? Like I say, when I pressed the "tyre like" valve, water did come out. Is this confirmation it is faulty? Was it worth replacing the auto air vent too? (just because it's cheap £8, and while I'm working on the...
  18. M

    Grant Combi 90 losing pressure

    Hi, I don't think I have any space to mount an external 1. I know they are cheaper, but there is nowhere for it to go. Do I need some sort of compound to make a tight seal on the joint when connecting the new vessel? Thanks.
  19. M

    Grant Combi 90 losing pressure

    OK, I think it's the pressure vessel... When I got home today, the heating was on as it's set to start just as I walk in the door(!) and the water was leaking out of the prv pipe. Got in and the readin was 2.5 bar so I presume the PRV is doing it's job. I powered it all down, released some...
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