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Hello all. I recently bought a house and decided that before the winter sets in that I would flush the heating system and refill with new inhibitor etc. I have done this several times before on other houses without any problems. It is a combi system with a hot water tank in the airing...

Another problem I have had on the grant combi 90 is this.... When the hot water is on and left on for a while (running a bath, etc) the heating comes on even if it is switched off. And when the heating forst comes on in the morning, the DHW is luke warm at best. What would cause this...

Hi all, Another problem with the boiler. It is leaking from a valve near the top front left, located just behind where the timer is, on the main tank. It has a twist off valve similar to a tyre valve, but it appears to be leaking from the valve itself. The valve is not attached to...

Morning all, the shower was a cold one this morning as there was no hot water!!! It seems that when the heating first comes on, there is no hot water. After the heating has been on for a while and all the rads are hot, there is some hot water. Is this something common? Could it be there...

Hi all, I am getting cloudy water, from all taps/showers hot AND cold. If I put it in a glass it clears from the bottom up, so I presume it's loads of air bubbles? Thing is, can I sort this out? I know there is nothing wrong with it, but it looks disgusting especially when you have people...

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...

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...

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...

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...

Hi all, new member here, so be gentle!!! OK, we have the above model combi in a 5 year old house. It has been working very well until recently. It is losing pressure I'd say every few days. I know what you will all say, it must be a leak! But I have looked everywhere on all the rads, and...