YC9470 7-in-1 sensor was not sending temperature data to the indoor console. While this was disappointing, at 10 months old it was still in warranty. I contacted customer service, and fully reset the system with their assistance, which still didn't work. A replacement unit was quickly agreed and despatched without quibble or delay.Couldn't have been more helpful. Back up and running within a few days, start to finish.
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