Turn o system power
2. Turn o the power to your heating or
cooling system at your breaker box to
avoid electrocution or shock.
3. If you want to check your system’s pow-
er, adjust the temperature on your current
thermostat enough that the system
switches into heating or cooling mode. If
the system does not power on in a few
minutes, it is o.
IMPORTANT: Never work with
live voltage
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