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Thermostat wires with no label
If one or more wires in your current thermostat doesn’t have a label,
don’t guess. You’ll need to know what wires are connected to your
current thermostat before you can install your Wyze Thermostat.
It's best that you check your system’s manual, contact an HVAC
professional, or look at your system’s control board.
Important: Most systems don’t use all the wires in the bundle coming
out of the wall. If any wires were not originally connected to your
current thermostat (and don’t have a label), they typically aren’t
connected to your system. There may be no need to connect these
wires to your Wyze Thermostat.
Determining a Conventional or Heat Pump (W or O/B)
Note: If you mistakenly chose the wrong terminal during setup, you
will need to reset the thermostat and select the correct terminal.
If you have the thermostat shown above it can be difficult to know
which wires to select in the Wyze app. Heat pumps live outside your
home and provide heating and cooling capabilities. That's where the
O/B terminal comes into play. If you have no equipment outside, you
definitely have a conventional system.
If you don’t know what system that you have off-hand, no worries!
Here are a few dead giveaways:
1. An easy way to identify a heat pump is to check on the control
board for the terminal labels. A heat pump will have O, B or
O/B terminals on the control board. Conventional units do not
usually have the O, O/B terminal.
2. Also, try turning on the heat, then check if your outside
condenser/air conditioning unit starts running. If it does, you
have a heat pump system.
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