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The following table is the list of the settings and their details. Default settings are shown in bold. Some settings are
only available to thermostats set to heat pump mode.
INSTALLER SYSTEM SETTINGS TABLE
SETUP & TESTING
System setting Description Factory default setting (bold) and setting range
00. Equipment type Equipment type is set by SW1
Heat/Cool
Heat Pump
01. Heat/Cool control
setup
Used to lockout heating or
cooling outputs (only available in
Heat/Cool mode)
Heat and Cool
Heat Only
Cool Only
02. Equipment stages Number of stages of equipment
Single Stage
Multi Stage
03. Auxiliary heat
stages
Number of stages of auxiliary heat
equipment
1 Stage
2 Stages
04. Temperature scale Set the thermostat to Fahrenheit or
Celsius mode
Fahrenheit
Celsius
05. Fan control in
Heating/Aux heat
selection
Determines if thermostat or
equipment controls fan in heating.
In heat pump applications, this is
also auxiliary heat selection.
1
Gas or oil heat (equipment controls fan)
Electric heat (thermostat controls fan)
06. Extended fan –
Heat
Extends fan operation after heat
call ends
Disable
Enable (90 second extension)
07. Extended fan –
Cool
Extends fan operation after cool
call ends
Disable
Enable (90 second extension)
08. Internal sensor
offset
Field adjustment of internal
temperature sensor
0° : No offset applied
–4°F to +4°F (–2°C to +2°C)
09. Auto changeover Enable or disable Auto changeover
mode
Disable
Enable
10. Remote sensor Select if remote sensor is attached
or not
No
Yes
11. Outdoor sensor Select if outdoor sensor is
attached or not
No
Yes
12. Compressor
minimum off time
Minimum off time for compressor
protection
5 minutes
1 to 5 minutes
13. Heating minimum
off time
Minimum off time for heating
2 minutes
1 to 5 minutes
14. Equipment
minimum on time
Minimum on time for heating and
cooling
2 minutes
1 to 5 minutes
15. Auto changeover
time
Minimum time between heating
and cooling calls
4 minutes
1 to 5 minutes
16. 1st stage
differential
1st stage differential
1°F (0.5°C)
1°F to 4°F (0.5°C to 2°C)
17. 2nd stage
differential
2nd stage differential
1°F (0.5°C)
1°F to 4°F (0.5°C to 2°C)
18. 3rd stage
differential
3rd stage differential
1°F (0.5°C)
1°F to 4°F (0.5°C to 2°C)
19. 4th stage
differential
4th stage differential
1°F (0.5°C)
1°F to 4°F (0.5°C to 2°C)
22. Screen lockout Screen lockout level. (Override
lockout by holding [MENU] for 7
seconds)
OFF : No lockout
Partial lockout
Full lockout
1
In heat pump mode, this system setting is also the auxiliary heat setting. If utilizing a fossil fuel auxiliary heat system, set to Gas or Oil Furnace.
In this setting, the heat pump will lock out before the fossil fuel auxiliary heat comes on; eliminating the need for a dual fuel kit. If utilizing
electric auxiliary heat, set to Electric. In this setting, the heat pump and electric auxiliary heat are allowed to run simultaneously.
61000729A 8600 Tstat Install.indd 6 10/8/10 10:32:42 AM