21-04-20, 01:28 AM
Mine does the same (Vaillant Ecomax), it's something they do.
They do have a feature where they will switch on regularly to keep an amount of hot water stored internally, but I've turned that off because I can wait 30 seconds for it to warm up if I need it and it saves wasting gas keeping the water warm, especially if you don't use it a lot during the day :thumbup
They do have a feature where they will switch on regularly to keep an amount of hot water stored internally, but I've turned that off because I can wait 30 seconds for it to warm up if I need it and it saves wasting gas keeping the water warm, especially if you don't use it a lot during the day :thumbup