11
Function Description
Setting
Press the
s
or
t
button to change the setting.
0170
Select System Type
1
Heat/cool: Gas, oil or electric heating with central air
conditioning.
2
Heat pump: Heat pump without backup or auxiliary
heat.
3
Heat only: Gas, oil or electric heat without central air
conditioning.
4
Heat only with fan: Gas, oil or electric heat without
central air conditioning.
5
Hot water heat only (no fan): Gas, oil or hot water heat
without central air conditioning.
6
Cool only: Central air conditioning only.
7
Heat pump: Heat pump with backup or auxiliary
heating.
8
Heat/Cool Multiple stages: 2 heat stages (wires on W
and W2), 2 cooling stages (wires on Y and Y2).
9
Heat/Cool Multiple stages: 2 heat stages (wires on W
and W2), 1 cooling stage (wire on Y).
10
Heat/Cool Multiple stages: 1 heat stage (wire on W), 2
cooling stages (wires on Y and Y2).
0180
Heating Fan Control
0
Gas or oil heat: Use this setting if you have a gas or oil
heating system (system controls fan operation).
1
Electric heat: Use this setting if you have an electric
heating system (thermostat controls fan operation).
0190
Heat Pump Changeover
Valve (for heat pumps only)
0
Cooling changeover valve: Use this setting if you
connected a wire labeled “O” to the O/B terminal (see
page 6).
1
Heating changeover valve: Use this setting if you
connected a wire labeled “B” to the O/B terminal (see
page 7).
0240
Heating Cycle Rate
5
Gas or oil furnace: Standard gas/oil furnace (less than
90% efficiency).
9
Electric furnace: Electric heating systems.
3
Heat pump, hot water or high-efficiency furnace:
Hot water system or gas furnace (more than 90%
efficiency).
1
Gas/oil steam or gravity system: Steam or gravity heat
systems.
Settings 5, 9, 3, or 1 recommended. Other settings:
2, 4, 6, 7, 8, 10, 11, 12. The number indicates how
frequently the system cycles on and off to maintain the
set temperature. A higher number means the system is
on and off for shorter amounts of time, a lower number
means longer on and off times. When these settings are
set to match the system type, the thermostat controls
temperature more accurately.
0270
Emergency Heat Cycle Rate
(heat pumps only)
9
Electric furnace: Electric heating systems.
0300
Manual/Auto Changeover
0
Manual changeover (Heat/Cool/Off).
1
Automatic changeover (Heat/Cool/Auto/Off).
Automatically turns on Heat or Cool based on room
temperature. Note: System maintains minimum 3°F
difference between heat and cool settings.
