48
Problem Possible Solution
Forgot lock screen password. Unlock the thermostat through the VeSync app.
Remove the thermostat from the backplate, then reattach it. This
will restart the thermostat.
Heating and cooling functions are
reversed.
If you have a heat pump system, change the O/B reversing valve
setting in the thermostat’s settings (scan the QR code and see
Settings in the extended digital manual).
Make sure that the W wire and Y wire are connected to the correct
terminals on the backplate.
If you are using the PEK, make sure the wires are connected to the
correct terminals on the HVAC control board and backplate (see
Installing Thermostat without a C Wire, page 22).
The thermostat does not show
weather information.
Make sure the thermostat is connected to the VeSync app.
In the VeSync app, make sure you input your home location and
set the region to the United States.
TROUBLESHOOTING (CONT.)
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