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Just checked - thankfully not

Thanks for the quick response - builder is back out this week so will ask them around reason for external frost stat when the boiler comes with one built in. Assume from your response that it's not normal for the radiators to be heating up because the frost stat has come on?

Hi Moved into a new build a few months back and have a Logic 18 boiler situated in the garage with a Honeywell Frost Stat and Pipe stat. Heating is a two zone system - one for downstairs and one for upstairs. Frost stat is set at 4 degrees and pipe stat is set to 10 degrees...my problem is...