Great concept, use the Honeywell Home controller and the thermostatic radiator valves (TRVs) to zone your home. It's unreliable. Controller periodically loses contact with the TRVs, the TRVs will periodically set their own temp to max or min and, even worse, the dial on the top doesn't cleanly change the temp. Often, you turn the dial one way and the temp goes the other. Close to useless.
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