Related Manuals for Lennox ComfortSense L5711U
Summary of Contents for Lennox ComfortSense L5711U
- Page 1 OWNER’S GUIDE E2007 Lennox Industries Inc. Dallas, Texas, USA ComfortSenset 5000 Series Models L5711U and L5732U Programmable Touch Screen Thermostats IMPORTANT Read and save these instructions. 506067−01 2/2008...
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Page 2: Table Of Contents
Table of Contents Thermostat Features ......Page 2 Thermostat Display ......Page 3 System Settings . -
Page 3: Thermostat Display
Override options allow you to easily override the pro- grammed schedule. Same−schedule programming allows you to program a schedule for several days at once. No need to copy. Armchair programming allows you to remove the thermo- stat from the wall while you program your schedules. Thermostat Display SYSTEM UP ARROW... - Page 4 Thermostat Display (Continued) INSIDE SHOWS CURRENT SHOWS CURRENT DAY OF THE WEEK INSIDE TEMPERATURE SET TO SHOWS FAN SHOWS CURRENT SETTING TEMPERATURE SETTING AUTO S S M Y TE HEAT SYSTEM SHOWS CURRENT OUTSIDE SYSTEM SHOWS CURRENT POSITION OUTSIDE TEMPERATURE (IF SYSTEM INCLUDES FOLLOWING OUTSIDE TEMPERATURE...
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Page 5: System Settings
System Settings Inside AUTO Following S S M Y TE Schedule Outside HEAT SCHED HOLD CLOCK SCREEN MORE PRESS SYSTEM SELECT SETTING OF HEAT, OFF, COOL OR EM HEAT (HEAT PUMP SYSTEMS ONLY) SYSTEM SETTINGS The system setting options vary based on your heating and/or cooling type. -
Page 6: Fan Settings
Fan Settings PRESS FAN. SELECT SETTING: ON, AUTO OR CIRC. Inside AUTO Following S S M Y TE Schedule Outside HEAT SCHED HOLD CLOCK SCREEN MORE FAN SETTINGS Fan runs continuously. Use this setting for improved air circulation or for more efficient central air cleaning. AUTO Fan runs only when heating or cooling system is on. -
Page 7: Program Your Heating And Cooling Schedule
Program Your Heating and Cooling Schedule NOTE − The thermostat includes a battery which makes it pos- sible 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: Wake Time when you awaken and want your home at a... - Page 8 Program Your Heating and Cooling Schedule (Cont.) 3 − Select any combination of days to edit. You may select multiple days. These should be days that you wish to follow the same schedule. Check marks appear next to the days that are selected.
- Page 9 Program Your Heating and Cooling Schedule (Cont.) NOTE − The FAN setting can be programmed for ON, AUTO or CIRC for each period selected. See following page for more in- formation about fan setting options. 9 − Press DONE key when finished. Saving changes screen appears to indicate that schedule changes are being saved to the days selected.
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Page 10: Fan Schedule
Fan Schedule The FAN setting can be programmed for ON, AUTO or CIRC for each period selected: Fan runs continuously. Use this setting for improved air circulation or for more efficient central air cleaning. AUTO Fan runs only when heating or cooling system is on. CIRC Fan runs randomly approximately 35% of the time. -
Page 11: Cancel A Schedule Period
Cancel a Schedule Period You may wish to cancel a period to match your lifestyle. For example, if someone is always home during the day on Tues- day, you can cancel the LEAVE and RETURN periods to have the thermostat hold the WAKE temperature until the SLEEP period is reached. -
Page 12: Set The Time
Set the Time 1 − Press the CLOCK key. The current time setting will be dis- played as shown below. 2 − Use the arrows to set the correct time. 3 − Press DONE key. IMPORTANT − The current day of the week should be displayed correctly on this screen. -
Page 13: Override Temperature Setting Temporary Hold
Override Temperature Setting Temporary Hold You may use the temporary hold function to override the pro- grammed temperature setting until the next scheduled period or until a particular time that you wish. 1 − Press the UP or DOWN arrow next to the temperature display to adjust the temperature as desired. -
Page 14: Override Temperature Setting Permanent Hold
Override Temperature Setting Permanent Hold The permanent hold function overrides the programmed temper- ature setting until the permanent hold is cancelled. 1 − Press the HOLD key. NOTE − Permanent Hold" appears on the screen under the cur- rent time. 2 −... -
Page 15: Override Temperature Setting Vacation Hold
Override Temperature Setting Vacation Hold You may use the vacation hold function to override the pro- grammed temperature setting for a designated number of days. 1 − Press the UP or DOWN arrow next to the temperature display to adjust the temperature as desired. NOTE −... -
Page 16: Temperature Recovery Feature
Temperature Recovery Feature 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. -
Page 17: Clean The Thermostat Screen
Clean the Thermostat Screen The thermostat screen may be cleaned, if necessary. 1 − Press the SCREEN key. The thermostat locks the touch screen for 30 seconds to allow for cleaning. 2 − Use a damp cloth slightly moistened with water or household glass cleaner to clean the screen. -
Page 18: Battery Replacement
Battery Replacement 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 back−up in a pow- er outtage. - Page 19 Battery Replacement (Continued) 3 − Remove the old batteries and insert three fresh AAA al- kaline batteries, as marked on the thermostat. BACK OF THERMOSTAT BATTERIES (3) 4 − Align the terminal screw blocks with the pins on the back of the thermostat. 5 −...
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Page 20: Reminder Timers
Reminder Timers The reminder timers notify you when it is time to change the fur- nace filter, humidifier pad or ultraviolet lamp. When one of the set timers expires, a reset key appears on the home screen. Reset Timers 1 − Change" reminder appears on the screen when the timer expires. -
Page 21: Built−In Compressor Protection
Built−In Compressor Protection The thermostat provides built−in compressor protection (mini- mum−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. -
Page 22: Outdoor Temperature
Outdoor Temperature If an optional outdoor temperature sensor has been installed with your thermostat, the outdoor temperature is displayed in the low- er 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. -
Page 23: Screen Lock
Screen Lock You can fully or partially lock the keys on the touch screen. See the Advanced Settings section for more information on this fea- ture. If the thermostat displays a Screen Locked" message, your thermostat screen is either fully or partially locked. Partially Locked Screen When partially locked, all touch screen keys are locked except the temperature up and down arrow keys and the SYSTEM key... -
Page 24: Advanced Settings
Advanced Settings 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; how- ever, use the following information to customize the settings for your use. -
Page 25: Advanced Settings
Advanced Settings (Continued) 4 − Refer to the figure below to see how the thermostat buttons are used to make selections. 5 − Refer to the table on the following pages to make proper set− up choices for your application. 6 −... - Page 26 Advanced Settings (Continued) User Set− Up No. Set−Up Name Selection Description Select first two digits of current 0120 Date (Year/first) calendar year (20 for 2007, etc.) Select last two digits of current 0130 Date (Year/last) calendar year (07 for 2007, etc.) Options: 01 to 99 available.
- Page 27 Advanced Settings (Continued) User Set− Up No. Set−Up Name Selection Description Options: 0 − Off. Thermostat time is not automatically adjusted for DST. 1 − On. Thermostat time is auto- matically adjusted for Daylight Savings in the Fall and Spring Daylight Sav- 0330 (using the pre−2007 DST calen-...
- Page 28 Advanced Settings (Continued) User Set− Up No. Set−Up Name Selection Description Select option for UV lamp re- UV Lamp Re- placement reminder timer. Op- 0520 placement Re- tions: minder 0 − Reminder is off 1 − 365 run time days Select option for number of scheduling periods.
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Page 29: Troubleshooting Tips
Troubleshooting Tips If... Then... Key to the right MORE key remains blank unless the Furnace of the screen Filter Change Reminder has been turned on. key is blank. See User Set−Up Number 0500. Display is Check that fresh AAA alkaline batteries are blank. - Page 30 Troubleshooting Tips If... Then... Cooling system ¯ Press SYSTEM key to set to Cool. does not turn ¯ Check the cool temperature setting to be sure it is set below the room temperature and Cool On" is displayed solidly on the screen. ¯...
- Page 31 Troubleshooting Tips If... Then... Cool On" is not Set the System setting to Cool and set the displayed on temperature setting below the room tempera- the screen. ture. If Cool On" is shown solidly in the dis- play, but the cooling system does not turn on, see Cooling system does not turn on"...
- Page 32 Troubleshooting Tips If... Then... Heating system Check Installer Set−Up Number 170: Heating does not turn and/or Cooling Type*. Make sure the setting off and the heat matches the installed heating and/or cooling temperature system. setting is set below the room temperature ( Heat On"...