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Incompatible systems:
● Non-standard labels (for instance 1,2,3, or A, B, C).
● Electric baseboard (110-240v).
● System with only two wires (R/Rc/Rh & W/Y), and have no
Common wire.
● Millivolt systems. (They use much less electricity than low
voltage systems and can't deliver the right amount of power.)
● High voltage systems.
● Not compatible with modulating equipment (Redlink,
Comfortmaker, ClimateTalk).
● House units that do not have C, Y, and G wires.
● Communicating equipment (furnace, heat pump).
● Systems that use coal, wood chips, pellets, anthracite, or other
biomass materials are typically incompatible.
● No R/Rc and Rh wires.
● No C and G wires.
Regarding Proprietary Systems:
Wyze Thermostat is not compatible with communicating equipment.
To determine whether or not your current thermostat is
communicating:
● Look up your current thermostat model.
● Check terminals of your current thermostat and look for special
terminals such as: A, B, C, D or 1, 2 ,3.
Is the thermostat compatible with zone boards?
Wyze Thermostat is compatible with most zone board models. You do
not need to do anything special to set up Wyze Thermostat with a
zone board and you don’t need to set up a zone controller as an
accessory. Just follow the guided setup instructions to install your
zone board.
What do my thermostat's wire labels mean?
Common Wiring Diagrams
Common
terminals
Wyze Wire
terminals
Meaning
G
G
This wire controls the blower fan, which is
responsible for pushing warm or
cool air through all the vents in your house.
C
C
This stands for the “common” wire in an HVAC
system, and it provides power to
the thermostat.
Y, Y1
Y1
The Y wire is used to send a signal to your
HVAC system telling it to fire up the
air conditioner. For cooling.
Y2
Y2
Second stage cooling.
4
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