The system setting options vary based on your heating and/or cooling type.
NOTE − The thermostat includes a battery which makes it possible for you to remove the thermostat from the wallplate during program. See page 19.
Your thermostat can control up to four different schedule periods per day:
The FAN setting can be programmed for ON, AUTO or CIRC for each period selected:
You may wish to cancel a period to match your lifestyle. For example, if someone is always home during the day on Tuesday, you can cancel the LEAVE and RETURN periods to have the thermostat hold the WAKE temperature until the SLEEP period is reached.
You may use the temporary hold function to override the programmed temperature setting until the next scheduled period or until a particular time that you wish.
The permanent hold function overrides the programmed temperature setting until the permanent hold is cancelled.
You may use the vacation hold function to override the programmed temperature setting for a designated number of days.
Your thermostat is equipped with a feature that accommodates recovery time to ensure your comfort.
Recovery time is the time that it takes your heating and cooling equipment to recover from energy−saving settings programmed during away or asleep periods. Recovery time depends on local weather, your schedule, the contruction of your home and your heating and/or cooling equipment. Your thermostat tracks the time that it takes for your system to reach your desired settings (recovery period). This allows the thermostat to accommodate this recovery period and to ensure your comfort at the programmed wake and return settings.
For example, your WAKE period is programmed for 6:00 a.m. and 70°F. The thermostat activates heating in advance of 6:00 a.m. to ensure that your desired comfort setting of 70°F is reached by the time you awake.
A recovery notice is displayed when the system is operating before the scheduled time.
The thermostat screen may be cleaned, if necessary.
If your thermostat has batteries, a low battery warning flashes on the home screen for approximately 30 days.
IMPORTANT − Batteries should be replaced once per year to prevent leakage and to prevent loss of battery backup in a power outtage. You may also wish to replace the batteries prior to leaving your home for more than a month.
The reminder timers notify you when it is time to change the furnace filter, humidifier pad or ultraviolet lamp. When one of the set timers expires, a reset key appears on the home screen.
Reset Timers
View or Reset Timer Settings Before They Expire
The thermostat provides built−in compressor protection (minimum− off timer) that prevents the compressor from restarting too early after a shutdown.
The minimum−off timer is activated after the compressor shuts off.
If there is a demand for compressor operation during the delay, the thermostat displays the WAIT message.
When the minimum−off delay expires, COOL ON ( or HEAT ON in heat pump applications) is displayed solidly on the screen and the compressor and fan are allowed to operate to meet the demand.
If an optional outdoor temperature sensor has been installed with your thermostat, the outdoor temperature is displayed in the lower right corner of the home screen. If the temperature is not displayed and an outdoor temperature sensor has been installed, press the MORE key until the outside temperature is displayed.
Some thermostat models, when used in heat pump systems which include an optional outdoor temperature sensor, provide additional features. In these applications, the compressor and/or back−up heat lockout may be based on the outside temperature.
You can fully or partially lock the keys on the touch screen. See the Advanced Settings section for more information on this feature. If the thermostat displays a Screen Locked” message, your thermostat screen is either fully or partially locked.
Your thermostat has many advanced settings that can be used to match your desired use of this important tool. These items have been set by the installer during the installer set−up process; however, use the following information to customize the settings for your use.
Use the following steps and the User Set−Up table on pages 25 through 27 to customize your thermostat operation.
User Set−Up Number | Set−Up Name | Selection Description |
0120 | Date (Year/ first) | Select first two digits of current calen- dar year (20 for 2005, etc.) |
0130 | Date (Year/ last) | Select last two digits of current calen- dar year (05 for 2005, etc.) Options: 01 to 99 available. |
0140 | Date (Month) | Select number that represents current calendar month. Options 1 through 12. |
0150 | Date (Day) | Select number that represents current calendar date. Options 1 through 31. |
0160 |
Schedule Options | Select the type of scheduling that will be used. Options: 0 − non−programmable thermostat; 4 − fully programmable thermostat with 7−day scheduling. |
0320 | Temp. Display Scale | Select the temperature display to be used. Options: 0 −− Fahrenheit; 1 − Celsius. |
0330 |
Daylight Savings | Options: 0 − Off. Thermostat time is not automatically adjusted for Daylight Savings in the Fall and Spring; 1 − On. Thermostat time is automati- cally adjusted for Daylight Savings in the Fall and Spring; |
User Set−Up Number | Set−Up Name | Selection Description |
0500 |
Filter Change Reminder | Select option for filter change reminder timer. Options: 0 − Reminder is off; 1 − 10 run time days; 2 − 30 run time days; 3 − 60 run time days; 4 − 90 run time days; 5 − 120 run time days; 6 − 365 run time days. |
0510 | Humidifier Pad Replace- ment Reminder | Select option for humidifier pad re- placement reminder timer. Options: 0 − Reminder is off; 1 − 90 run time days; 2 − 180 run time days; 3 − 365 run time days. |
0520 | UV Lamp Replace- ment Reminder | Select option for UV lamp replace- ment reminder timer. Options: 0 − Reminder is off; 1 − 365 run time days. |
0540 | Number of Periods | Select option for number of schedul- ing periods. Options: 2 − Two periods (wake and sleep); 4 − Four periods (wake, leave, return, sleep). |
0640 | Clock Format | Select clock format. Options: 12 − 12−hour clock; 24 − 24−hour clock. |
User Set−Up Number | Set−Up Name | Selection Description |
0670 |
Screen Lock−Out | Select screen lockout. Options: 0 − All keys are functional. Screen is unlocked; 1 − Screen partially locked −− only temp. up and down keys and ability to enter installer set−up mode and modify set−up selections are enabled; 2 − Screen fully locked −− only ability to enter installer set−up mode and modify set−up selections are enabled. |
If . . . | Then . . . |
Key to the right of the screen key is blank. | MORE key remains blank unless the Fur- nace Filter Change Reminder has been turned on. See User Set−Up Number 0500. |
Display is blank. | Check that fresh AAA alkaline batteries are installed as marked on the thermostat. |
Temperature set- tings do not change. | Check that temperature settings are: • Heating 40°F to 90°F (4.5°C to 32°C). • Cooling 50°F to 99°F (10°C to 37°C). |
Heating system does not turn on. | • Set the system to heat by pressing the SYSTEM key. • Check the heat temperature setting to be sure it is set above the room temperature and “Heat On” is displayed solidly on the screen. • Check the circuit breaker to make sure it is not tripped. • Check the power switch at the heating and/or cooling system to make sure it is on. • Check the furnace door to make sure it is closed securely. • Wait five minutes for the heating system to respond. • If the problem has not been identified and corrected, contact a qualified service technician. |
If . . . | Then . . . |
Cooling system does not turn on. | • Set the system to Cool by pressing the SYSTEM key. • Check the cool temperature setting to be sure it is set below the room temperature and “Cool On” is displayed solidly on the screen. • Check the circuit breaker to make sure it is not tripped. • Check the power switch at the heating and/or cooling system to make sure it is on. • Check the furnace door to make sure it is closed securely. • Wait five minutes for the cooling system to respond. • If the problem has not been identified and corrected, contact a qualified service technician. |
Cannot set System setting to Cool. | Check Installer Set−Up Number 170: Heating and/or Cooling Type*. Make sure the setting matches the installed heating and/or cooling system. |
“Heat On” is not dis- played on the screen. | Set the System setting to Heat and set the temperature setting above the room temper- ature. If “Heat On” is shown solidly in the display, but the heating system does not turn on, see “Heating system does not turn on” suggestions on the previous page. |
“Cool On” is not dis- played on the screen. | Set the System setting to Cool and set the temperature setting below the room temper- ature. If “Cool On” is shown solidly in the display, but the cooling system does not turn on, see “Cooling system does not turn on” suggestions at the top of this page. |
If . . . | Then . . . |
“Wait” is displayed on the screen. | Compressor minimum−off timer is activated. Wait up to five minutes for the compressor to turn on. |
Fan does not turn on in a call for heat (electric furnaces only) | Check Installer Set−Up 0180: Fan Control in Heating*. Make sure Electric Heat option is selected. |
Both heating and cooling systems are operating at the same time. | Check Installer Set−Up Number 170: Heating and/or Cooling Type*. Make sure the setting matches the installed heating and/or cooling system. Check to ensure that bare portions of wires are not touching. |
Heating is running in Cool mode. | Check Installer Set−Up Number 170: Heating and/or Cooling Type*. Make sure the setting matches the installed heating and/or cooling system. |
The heating system does not turn off and the heat temperature setting is set below the room temperature (“Heat On” is not shown in display.) | Check Installer Set−Up Number 170: Heating and/or Cooling Type*. Make sure the setting matches the installed heating and/or cooling system. |
Red LED is lit in the upper right corner of the thermostat when the system monitor detects a possible problem. | A system monitor is wired to the thermostat L terminal. Refer to suggestions given in Heating or Cooling System Does Not Turn On sections in this table. |
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