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it has been sorted and it wasn't an airlock if you read post #27Air lock in the system somewhere perhaps. Please don't start doing too much, being hands on is great but we spend a fortune to learn how to operate safely. £50-£85 an hour is not a lot for peace of mind. Also they could Che know the installation is correct and safe to use. In my experience when an 'installer' is uncatalogued it's because they DON'T want to be contacted.
Reply to the thread, titled "New Central Heating System - RADS not working" which is posted in Central Heating Forum on Plumbers Forums.
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