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RTHL3550
13 69-2584ES—01
SETUP WIRING ASSISTANCE TROUBLESHOOTING
Function 1: System type
Press 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).
Press to change setting. When
correct setting is selected, press
NEXT to display next function.
MCR32599
Done Next
MCR32602