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Hi I am replacing a 20 year old honeywell room stat with a sunvic TLX7501. The honywell is wired as follows Red = 1 this is live 240v Blue = 2 Yellow = 3 I did a staight swap on the wires ie 1 to 1, 2 to 2, etc but it dosen't work we set the new stat to 35c to call for...