Instruction/ maintenance manual of the product L5711U Lenox
Go to page of 32
E 2007 Lennox Industries Inc. Dallas, T exas, USA ComfortSense t 5000 Series Models L571 1U and L5732U Programmable T ouch Screen Thermost at s OWNER’S GUIDE IMPORT ANT Read and save these instructions.
P age 2 T able of Content s Thermostat Features Page 2 . . . . . . . . . . . . . . . . . . . . . . . . . . Thermostat Display Page 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . System Settings Page 5 . . . . . . . . . . . . . . . . . . . .
P age 3 S Override options allow you to easily override the pro- grammed schedule. S Same−schedule programming allows you to program a schedule for several days at once. No need to copy . S Armchair programming allows you to remove the thermo - stat from the wall while you program your schedules.
P age 4 Thermost at Display (Continued) TUE SHOWS CURRENT DA Y OF THE WEEK FA N SHOWS F AN SETTING INSIDE SHOWS CURRENT INSIDE TEMPERA TURE SET TO SHOWS CURRENT TEMPERA TURE SETTING SYSTEM SHOWS CURRE.
P age 5 System Settings PRESS SYSTEM SELECT SETTING OF HEA T , OFF , COOL OR EM HEA T (HEA T PUMP SYSTEMS ONL Y) AM FA N SS M Y TE HEAT Se o t T Following Schedule SCHED HOLD CLOCK SCREEN MORE Inside TUE Outside AUTO SYSTEM SETTINGS The system setting options vary based on your heating and/or cooling type.
P age 6 Fan Settings PRESS F AN. SELECT SETTING: ON, AUTO OR CIRC. AM FA N SS M Y TE HEAT Se o t T Following Schedule SCHED HOLD CLOCK SCREEN MORE Inside TUE Outside AUTO F AN SETTINGS ON Fan runs continuously . Use this setting for improved air circulation or for more efficient central air cleaning.
P age 7 Program Y our 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.
P age 8 Program Y our Heating and Cooling Schedule (Cont.) 3 − Select any combination of days to edit. Y ou 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.
P age 9 Program Y our Heating and Cooling Schedule (Cont.) NOTE − The F AN 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.
P age 10 Fan Schedule The F AN setting can be programmed for ON, AUT O or CIRC for each period selected: ON Fan runs continuously . Use this setting for improved air circulation or for more efficient central air cleaning. AUTO Fa n runs only when heating or cooling system is on.
P age 11 Cancel a Schedule Period Y ou may wish to cancel a period to match your lifestyle. For example, if someone is always home during the day on T ues- day , you can cancel the LEA VE and RETURN periods to have the thermostat hold the W AKE temperature until the SLEEP period is reached.
P age 12 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 . IMPORT ANT − The current day of the week should be displayed correctly on this screen.
P age 13 Override T emperature SettingT emporary Hold Y ou 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.
P age 14 Override T emperature SettingPermanent Hold Th e 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.
P age 15 Override T emperature SettingV acation Hold Y ou 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.
P age 16 T emperature Recovery Feature Y our thermost at 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.
P age 17 Clean the Thermost at 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.
P age 18 Battery Replacement If your thermostat has batteries, a low battery warning flashes on the home screen for approximately 30 days. IMPORT ANT − Batteries should be replaced once per year to prevent leakage and to prevent loss of battery back−up in a pow- er outtage.
P age 19 Battery Replacement (Continued) 3 − Remove the old batteries and insert three fresh AAA al- kaline batteries, as marked on the thermostat. BACK OF THERMOST A T BA TTERIES (3) + + + 4 − Align the terminal screw blocks with the pins on the back of the thermost at.
P age 20 Reminder T imers 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.
P age 21 Built−In Compressor Protection The thermostat provides built−in compressor protection (mini- mum−off timer) that prevent s the compressor from restarting too early after a shutdown. The minimum−off timer is activated af ter the compressor shuts off.
P age 22 Out door T emperature If an optional out door temperature sensor has been installed with your thermosta t, the out door temperature is displayed in the low- er right corner of the home screen.
P age 23 Screen Lock Y ou 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.
P age 24 Advanced Settings Y our 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 inst aller during the inst aller set−up process; how- ever , use the following information to customize the settings for your use.
P age 25 Advanced Settings (Continued) 4 − Refer to the figure below to see how the thermost at buttons are used to make selections. 5 − Refer t o the t able on the following pages to make proper set− up choices for your application. 6 − When all set−up selections have been made, press the DONE key to save your settings.
P age 26 Advanced Settings (Continued) User Set− Up No. Set−Up Name Selection Description 0120 Date (Y ear/first) Select first two digits of current calendar year ( 20 for 20 07, etc.) 0130 Date (Y ear/last) Select last two digits of current calendar year ( 07 for 20 07 , etc.
P age 27 Advanced Settings (Continued) User Set− Up No. Selection Description Set−Up Name 0330 Daylight Sav- ings Options: 0 − Off. Thermost at time is not automatically adjusted for DST . 1 − On. Thermostat time is auto- matically adjusted for Daylight Savings in the Fall and S pring (using the pre−2007 DST calen- dar) 2 − On.
P age 28 Advanced Settings (Continued) User Set− Up No. Selection Description Set−Up Name 0520 UV Lamp Re- placement Re- minder Select option for UV lamp re- placement reminder timer . Op- tions: 0 − Reminder is off 1 − 365 run time days 0540 Number of Peri- ods Select option for number of scheduling periods.
P age 29 T roubleshooting Tip s If... Then... Key to the right of the screen key is blank. MORE key remains blank unless the Furnace 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.
P age 30 T roubleshooting Tip s If... Then... Cooling system does not turn on. ¯ Press SYSTEM key to set to Cool. ¯ Check the cool temperature setting to be sure it is set below the room temperature and Cool On" is displayed solidly on the screen.
P age 31 T roubleshooting Tip s If... Then... Cool On" is not displayed on the screen. Set the System setting to Cool and set the temperature setting below the room tempera- ture.
P age 32 T roubleshooting Tip s If... Then... 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 T ype*.
An important point after buying a device Lenox L5711U (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Lenox L5711U yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Lenox L5711U - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Lenox L5711U you will learn all the available features of the product, as well as information on its operation. The information that you get Lenox L5711U will certainly help you make a decision on the purchase.
If you already are a holder of Lenox L5711U, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Lenox L5711U.
However, one of the most important roles played by the user manual is to help in solving problems with Lenox L5711U. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Lenox L5711U along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
