Configuration


System Setup

On initial setup the thermostat will enter the ISU menu. If entering the ISU menu after initial setup, follow the steps below:

  1. Press and hold the bottom left button and Up arrow button for 5 seconds to access the INSTALLER SETUP (ISU).

  2. The ISU number is on the left. The ISU setting is on the right.

    When an ISU number is displayed, press or to change the setting.

  3. After choosing the correct setting for an ISU, press NEXT to advance to the next ISU setting.

  4. To finish setup, press the SAVE button.


Installer Setup Options (ISU)

Note: Depending on system settings, not all options may be available.

# ISU

ISU Name

ISU Options (factory defaults are bold)

1050

Temperature Indication Scale

F = Fahrenheit

C = Celsius

(Default varies by model)

2000

Heating System Type

1 = Conventional Forced Air Heat

2 = Heat Pump

3 = Radiant Heat

5 = None (Cool Only)

If you are unsure what type of system you have, refer to your heating/cooling system equipment literature or call an HVAC professional. If you select the wrong system type, the thermostat will not operate the equipment as intended.

2010

Heating Equipment Type

Conventional Forced Air Heat:

1 = Standard Efficiency Gas Forced Air

2 = High Efficiency Gas Forced Air

3 = Oil Forced Air

4 = Electric Forced Air

5 = Hot Water Fan Coil (ISU 2010 not shown when 2000 = Heat Pump)

Radiant Heat:

9 = Hot Water Radiant Heat

12 = Steam

2060

Reversing Valve O/B

0 = O (O/B in Cool. O wire is connected to the O/B terminal and controls cooling.)

1 = B (O/B on Heat. B wire is connected to the O/B terminal and controls heat.)

The literature that came with your heat pump equipment should indicate whether the reversing valve is energized in Heat or Cool mode.

2070

Cool Stages/ Compressor Stages

0, 1

2071

Heat Stages

Heat Stages: 1

3000

System Changeover

0 = Hidden (Manual only)

1 = Enabled

(Automatic available. In Auto mode, the thermostat automatically

switches between heating and cooling to maintain the desired

indoor temperature. This option is not recommended if the outdoor

temperature often stays below 50°F [10°C] during winter months.)

4103

Minimum Heat Setpoint

32 °F to 50 °F (Default is 40 °F)

0 °C to 10.0 °C (Default is 4.5 °C)

Do not set this lower than 40°F/4.5°C unless installed in a location where pipes are not at risk of freezing.

7110

Air Filter Replacement Reminder

(Run Time only counts the time that Heat, Cool or Fan are running)

0 = Off

1 = 10 Run Time Days

2 = 20 Run Time Days

3 = 30 Run Time Days

4 = 45 Run Time Days

5 = 60 Run Time Days

6 = 90 Run Time Days

7 = 120 Run Time Days

8 = 150 Run Time Days

9 = 30 Calendar Days

10 = 45 Calendar Days

11 = 60 Calendar Days

12 = 75 Calendar Days

13 = 3 Calendar Months

14 = 4 Calendar Months

15 = 5 Calendar Months

16 = 6 Calendar Months

17 = 9 Calendar Months

18 = 12 Calendar Months

19 = 15 Calendar Months

14005

Idle screen selection

0 - Minimum Information shown

2 - Maximum display information shown


System Operation Settings

  1. Press the MODE button to cycle to the next available System mode

  2. Cycle through the modes until the desired System mode is displayed
    Available System modes vary with system settings.

System modes:

  • AUTO

  • HEAT

  • COOL

  • OFF


Fan Operation Settings

  1. Press the FAN button to cycle to the next available Fan mode

  2. Cycle through the modes until the desired Fan mode is displayed
    Available Fan modes vary with system settings.

Fan modes:

  • AUTO: Fan runs only when the heating or cooling system is on

  • ON: Fan is always on

  • CIRC: Fan runs about 33% of the time to circulate air.


Built-in Compressor Protection

Damage can occur if your system’s compressor is restarted too soon after shutdown. This feature forces the compressor to wait for a few minutes before restarting. During the wait time, the display will show the message Waiting For Equipment under the room temperature reading.

When the safe wait time has elapsed, the message disappears, and the thermostat will show “Heat on” or “Cool on”.