Red Jumper Wire Thermostat

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If you see thick, black, or red wires, you have a line voltage system. This type of wiring requires a line voltage thermostat and is not compatible with low voltage thermostats. If you see wires connected to terminals labeled g1 g2 g3, you need a thermostat capable of controlling multiple fan speeds; None of our retail thermostats are compatible with this system.

A jumper wire does not originate from behind the wall, but is unique to each thermostat. Sensi thermostat does not use jumper wires. Wires going to the "rh," "rc," or "r" terminals (usually red) are the hot wire from the transformer on the heating or cooling equipment. If you don't, you'll need two red wires to connect each terminal to the system transformer separately. Do i require a jumper from r to rc, in addition? A leading consumer magazine best buy! Large, easy to view, easy to program touchscreen thermostat with universal compatibility. Replacing jumper wire on thermostat. My intention is to remove a nest thermostat and reconnect the old thermostat.