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I have already experimented to get the rooms the right temperature. To Quote the vaillant manual: "This boiler has a cycle holdoff function for TRVs. When the boiler has reached temperature in central heating mode, the boiler will switch off and hold itself off for a 5 minute cycle prior to...

hi, thanks for your reply I have 7 radiators, 5 with trvs on, the room with the digistat on does not have a trv, but the on/off cycles are about 30 seconds, which is not even enough time to push water round. It doesnt have diagnostics on the boiler. it was installed in 1996

Hi, I have a vaillant turbomax 242e and i still have all the installation manuals. The problem I have is ever since I fitted TRVs to all but two radiators, the boiler comes on, gets the system up to temperature and as my room stat is still calling, the boiler is on for a minute, off for one and...