Advanced Installation Guide
69-2637ES—01 14
SETUPWIRINGASSISTANCETROUBLESHOOTING
Function 1: System typePress the s or t button to select the type
of system you have in your home:
0 Heating & cooling: Gas, oil or electric heating with
central air conditioning.
1 Heat pump: Outside compressor provides both
heating and cooling without backup or auxiliary heat.
2 Heating only: Gas, oil or electric heating without
central air conditioning.
3 Heating only with fan: Gas, oil or electric heating
without central air conditioning. (Use this setting if
you could turn the fan on and off with a fan switch on
your old thermostat.)
4 Cool only: Central air conditioning only.
5 Heat Pump: Outside compressor provides both
heating and cooling with backup or auxiliary heating.
6 Heat/Cool Multiple Stages: Two heat stages (wires on
W and W2), two cooling stages (wires on Y and Y2).
7 Heat/Cool Multiple Stages: Two heat stages (wires
on W and W2), one
cooling stage (wire on
Y).
8 Heat/Cool Multiple
Stages: One heat
stage (wire on W), two
cooling stages (wires
on Y and Y2).
M28351
Press to change
setting. When
correct setting
is selected,
press NEXT to
display next
function.
Done Next
1
0
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