Honeywell RTH6500WF Wi-Fi Series - Installation; Installing Your Thermostat

10
Circuit
breaker
box
Heating/cooling
system power
switch
1.10 Switch heating/cooling
system ON
Important!
1.10a Verify that the C
wire is connected at the
thermostat and at the
heating/cooling system.
1.10b Make sure the heating/cooling
system door is firmly secured.
1.10c Switch power back ON for
your heating/cooling system
at the breaker box or its
power switch.
or
M31544