LUX TX1500UC SMART TEMP UNIVERSA
- Please read all of these instructions carefully before beginning installation.
- Label every wire terminal designation on your existing thermostat wiring before removing your old thermostat.
- Ignore the color of the wires since they may not comply with any standard. Please connect wires using the terminal letter designations.
The electrical rating for this thermostat is 1.5 Amps per terminal, with a maximum total combined load of 3.0A for all terminals combined.
- Most 24-volt heating and cooling systems
- 1 or 2 stage Heat / 1 stage Cool: Gas, Oil or Electric systems
- 1 or 2 stage Heat / 1 stage Cool: Heat Pump systems
- 3-wire hydronic (hot water) zone valves
- Gas Millivolt heaters
NOT COMPATIBLE WITH:
- 120/240 VAC line-voltage systems (without a transformer), ask your LUX dealer for thermostats to control these systems.
- 1 or 2-Heat / 1-Cool, 7-day programming
- Universal Compatibility for all system types
- Each day of the week can be programmed separately
- Easy to use, touchscreen menu operation
- User-selectable periods per day (2 or 4)
- User-selectable programmable or non-programmable operation
- LuxLight® EL (Electro-Luminescent) lighted display
- Energy usage monitor
- Programmable air filter life timer
- Programmable keypad lockout for unauthorized users
- Manual temperature hold
- Adjustable vacation hold (1 to 30 days)
- Temporary temperature override
- Adjustable temperature differential / cycle-rate
- Adjustable 2nd heat stage Offset setting
- User temperature calibration
- Adjustable heat/cool set temperature limit stops
- Smart recovery
- Dual-powered (battery and/or 24-volt system powered)
- Battery-free memory storage
- F/C temperature display
- 12/24-hour clock display
- 5/2-minute selectable time delay for equipment protection
TOOLS YOU MAY NEED
- Wire Stripper
- Wire Cutter
- Drill with assorted drill bits (new installations only)
On replacement installations, mount the new thermostat in place of the old one unless the conditions listed below suggest otherwise. On new installations, please follow these general guidelines:
- Mount the thermostat on an inside wall, about 5 ft. (1.5m) above the floor.
- Do not locate the thermostat where air circulation is poor such as in a corner, alcove, or behind a door that is normally left open.
- Do not locate the thermostat where unusual heating or cooling conditions may be present, such as: direct sunlight, above a lamp, television, or radiator, or on a wall next to an exterior door or window.
- Do not locate in a damp environment, as this can lead to corrosion that may shorten thermostat life.
- If painting or construction work is still ongoing, cover the thermostat completely or wait until this work is complete before installation.
All wiring must conform to the local codes and ordinances that are in your particular location.
REMOVE OLD THERMOSTAT
- Turn OFF the electricity to all heating and cooling components. Do not turn the electricity back on until all work is completed.
- Remove the front portion of your old thermostat to expose the wiring connections.
- Write down the letters printed near each wire terminal that is used, and also the color of each wire that is connected to it. Self-adhesive wire labels are also enclosed.
- Carefully remove the wires one at a time, and bend them in a manner so that they do not fall back inside the wall. Do not allow bare wire ends to touch each other.
- Loosen the mounting screws for the old thermostat and carefully remove it from the wall.
INSTALL THERMOSTAT BASE
- Strip wire insulation leaving only 3/8 in. (9.5mm) bare wire ends, and clean off any corrosion present.
- Fill the wall opening with non-combustible insulation to prevent drafts from affecting the thermostat’s normal operation.
- Separate new thermostat housing using your thumb and index finger. Provide pressure in opposite directions to the release tabs on the top of the housing, in the directions shown in the diagram shown above.
- Route the wires through the opening in the new thermostat base plate, and hold the base against the wall. Try to line up the screw holes from the prior thermostat, and install the mounting screws.
- If the previous holes cannot be used, hold the thermostat base against the wall so that it appears straight and level (position the base for the best appearance) and mark for the new screw holes. Attach the base to the wall using the screws provided (use the supplied plastic anchors if needed when mounting to a soft material such as drywall).
CONNECTING THE WIRES
When attaching the wires to the thermostat, please ensure that the bare wire ends are held ALL the way into the terminal block while the screw is being tightened.
WIRING BASE PLATE NOTICE
This thermostat model is part of a family of similar models that have the same general visual appearance. Even though this base plate may look the same as base plates from other models, the wiring connections may have different terminal letters for different purposes. Please do not interchange the back plates and/or thermostat front halves of other similar-looking models. Doing so may cause undesired heating and/or cooling operation to occur.
(Important, please read all notes before connecting wires)
- If the information provided in the following wiring diagrams does not clearly represent or match your system, please refer to the “TECHNICAL ASSISTANCE” section of this manual, and contact us before removing any of your existing thermostat wiring.
- For example, Diagram #1 shows the fan wire as optional. If your system does not have a fan, than this terminal will not be used.
- Terminal letters shown in black represent typical wiring applications. Depending upon the brand of your specific system or thermostat, your terminal letters may not match exactly. Terminal letters shown in gray represent other possible wiring designations that you might see on your existing thermostat terminals.
- The optional “C” terminal is used for powering the thermostat by the 24- volt system, using the System Common wire. This can be used alone, or in addition to installing batteries as a backup.
NOTE: Connecting the System Common wire to the thermostat is not necessary for heating and cooling to function properly.
- If your old thermostat has both a “Y” and “C” wire present, then “C” is most likely a System Common wire.
- for Heat Pump systems, you will use either the “O” terminal or the “B” terminal on this thermostat, but not both. If your old thermostat has both an “O” and a “B” wire present, then “B” is likely a System Common wire and may be connected to the “C” terminal. Connecting a System Common wire to this thermostat’s “B” terminal may damage the thermostat, and also your heating and cooling system.
- Some Heat Pump systems have a wire for AUX electric heat (usually W2), and also a separate wire for Emergency electric heat (usually E). This thermostat uses the W2 terminal for both AUX and Emergency Heat. Tape off your “E” wire, and confirm that all components function without it.
- If replacing an old thermostat that has a mechanical clock, there may be two wires labeled as “C” for the clock power. Tape off these wires and do not connect them to the “C” terminal of this thermostat.All of the dashed wires shown in the wiring diagrams are either optional, or their usage depends upon your specific system type or brand.
DIAGRAM SYSTEM TYPE / DESCRIPTION PAGE #
- #1 CONVENTIONAL: HEATING ………………………………………………….10
1-STAGE OR 2-STAGE 2, 3, 4, 5 WIRES
- #2 CONVENTIONAL: HEATING ………………………………………………….11
3-WIRE ZONE VALVE 3, 4 WIRES
- #3 CONVENTIONAL: COOLING ………………………………………………….12
1-STAGE 3, 4 WIRES
- #4 CONVENTIONAL: HEATING AND COOLING ……………………………….13
1-STAGE HEAT 4, 5 WIRES
- #5 CONVENTIONAL: HEATING AND COOLING ……………………………….14
2-STAGE HEAT 5, 6 WIRES
- #6 CONVENTIONAL: HEATING AND COOLING ……………………………….15
TWO-TRANSFORMERS 5, 6 WIRES
- #7 HEAT PUMP: HEATING AND COOLING ……………………………….16
SINGLE-STAGE ONLY 4, 5 WIRES
- #8 HEAT PUMP: HEATING AND COOLING ……………………………….17
WITH AUX / EMERGENCY HEAT 5, 6 WIRES
COMPLETE THE INSTALL
INSTALL BATTERIES INTO THERMOSTAT: Install two brand new Energizer® or DURACELL® “AA” size alkaline (only) batteries, into the thermostat’s battery compartment. Ensure the batteries are installed in the proper direction.
GAS / ELEC CIRCUIT BOARD OPTION (“G” TERMINAL FAN OPERATION): This setting is a plastic shorting cap called a jumper. This jumper must remain installed, and set to either GAS or ELECTRIC for your system to work properly. This setting changes how your system’s blower fan (if applicable) is controlled while the thermostat is in HEAT or EMERG HEAT mode, when the Fan switch in the AUTO position. This setting does not affect the fan operation while in COOL mode.
When set to “GAS”, the blower fan is controlled solely by the heating system itself. Systems that would typically use the “GAS” setting would be: natural gas, propane, or oil furnaces, and boilers.
NOTE: If your blower fan does not operate properly after installation, move the Gas / Electric option to the “Electric” setting. When set to “ELEC”, the blower fan is controlled directly by the thermostat. This setting is required for heating systems that do not control their own fan, such as HEAT PUMPS, and units that only have an electric-resistive heating element as the heat source.
FRONT PANEL ITEMS
These two items below are both located on the right side of the thermostat housing.
- HEAT / OFF / COOL, SYSTEM MODE SWITCH: Set this switch to HEAT to control your heating system, and COOL to control your cooling system. The OFF position will disable both the heating and cooling units.
- AUTO / ON, FAN MODE SWITCH: When this switch is in AUTO, the blower fan (if present in your system) will automatically cycle on and off by itself while heating or cooling is running. When in the ON position, the blower fan will run constantly with or without a demand for heating or cooling, even when the System Mode switch is in the OFF position.
NOTE: The Fan Mode switch only works if your system provides a wire for the thermostat’s “G” wire terminal, to control a blower fan. The Fan Mode switch has no effect in systems that do not have a blower fan (such as a hot water radiator system).
- MULTI-FUNCTION, SET SLIDE SWITCH: This switch provides an easy way to quickly access the most commonly used thermostat settings. This switch has 4 individual positions, and unless a specific setting is being adjusted, this switch should always remain in the RUN position for the thermostat to control the room temperature. The other Set of Slide switch positions are described in greater detail in the ADVANCED FEATURES section. NOTE: this switch is only operable when the thermostat is in “Programmable” mode. When the thermostat is used in “Manual” control mode, all 4 of the switch positions will act like the RUN position, except the “AIR FILTER” position.
- SETBACK BUTTON: This button activates and deactivates the SETBACK feature, which overrides the set temperature for an adjustable duration. This feature is described in greater detail in the ADVANCED FEATURES section.
- UP / DOWN BUTTONS: The UP and DOWN buttons are used to adjust any item that can be changed by the user. Examples are the set temperatures, clock times, and days of the week. In many cases, an item may be flashing if it can currently be adjusted.
- HOLD BUTTON: This button activates and deactivates the manual Temperature Hold feature.
- EMER BUTTON: When in Normal Run mode, the usage of this button varies depending upon your specific system configuration. For heat pump systems, pressing this button enables your emergency heat function, which is described in greater detail in the OPERATING INSTRUCTIONS section. For conventional systems, there is no such thing as emergency heat, so this button will have no effect.
- NEXT BUTTON: This button is mostly used while setting items such as software
options, and temperature program periods. When there are several items on the screen that can be changed, usually one of them is flashing indicating that it can be adjusted. Pressing the NEXT button will cycle through which item is flashing.
SYSTEM CONFIGURATION AND SETUP OPTIONS
Setup options for how the thermostat will function, along with choosing your particular system type, are performed using a menu on the display screen. TO ACCESS THE SETUP MENU: Move the System Mode switch into the OFF position, and then hold down the EMER button for approximately 5 seconds until the screen changes. The menu will always start with item #1, and is advanced to each following item by a single press of the NEXT button. The options for each item are changed using the UP or DOWN buttons.
- ITEM #01 (CLK = CLOCK FORMAT): [12Hr, default] This displays the clock times using standard AM and PM values. [24Hr] This displays the clock times using the military-time format (example 22:00 hours, without using AM or PM).
- ITEM #02 (TMP = TEMPERATURE SCALE): [F, default] Shows all temperature values in Fahrenheit. [C] Shows all temperature values Celsius.
- ITEM #03 (THERMOSTAT TYPE): [PROG, default] Use this setting for following a daily program routine. [MAN] This setting omits the program routine and operates as a manual style non-programmable thermostat. This is very basic and only shows the room temperature and set the temperature on the screen, with no clock.
- ITEM #04 (PERD = PERIOD QUANTITY): [4P, default] Thermostat uses four periods per day (called MORN, DAY, EVE, and NITE). [2P] The thermostat uses two periods per day (called DAY and NITE).
- ITEM #05 (RCV = EARLY RECOVERY): [OFF, default] Program Set Temperature values start to occur at exactly the period start times. [ON] Early Recovery affects how the transition occurs when changing from the NITE to the MORN period, and when changing from the DAY to the EVE period. The thermostat calculates how long it takes for your home to recover from a setback on a daily basis, and turns on ahead of time in order to reach the target set point of the next upcoming program period by the period’s start time. While in recovery, the word “RECOV.” will be shown on the display screen.
- ITEM #06 (SYSTEM MODE): [FURN, default] This is for the majority of heating systems that are not Heat Pumps, such as a gas furnace or hot water boiler. [HP] Use this setting if you have a Heat Pump system, which uses the outdoor unit as the primary heat source and may also contain an electric heating element as a backup heat source. When set to “HP”, ensure that you have also set the Gas/Electric circuit board option to “ELEC”, as described in the “COMPLETE THE INSTALL” section.
- ITEM #07 (DLAY = DELAY TIME): [5, default] Thermostat waits 5 minutes before turning the system back on after it was last run. This internal delay prevents rapid cycling and provides equipment protection. The 5 minute setting is fine for most applications.  Same operation as above but reduced to 2 minutes between state changes.
- ITEM #08 (TEMPERATURE SWING): A thermostat works by turning your heating or cooling system on and off whenever the room temperature varies from the desired set-point temperature. The amount of this variation is called the swing. Use the UP/DOWN buttons to change the number value between 1 and 9. Generally your system should cycle on about 3 to 6 times per hour. A smaller swing number makes the system cycle more frequently, so the room temperature is more precise and constant. Alarger swing number will make the system remain on for a longer duration each time and decreases the number of cycles per hour.
- ITEM #09 (STAGE-2 OFFSET): [2, default] This setting is adjusted as a number from 0 to 9. When set to 0 (ZERO), the second heating stage is completely disabled while in regular Heat mode (however Emergency Heat mode will still function for heat pump configurations). An Offset value from 1 to 9 degrees will determine the number of degrees from the set point that will be required for the second heating stage to turn on. This setting can be used to conserve energy in situations where the second heating stage is more costly to operate when compared to the first stage.
SET DAY AND TIME: Press the MENU button. The first menu item shown is “SET DAY/TIME”, press the OK button. With the day flashing, press UP or DOWN to set the day of the week. Press NEXT and the clock time will start flashing. Use UP or DOWN to set the time, making sure the AM/PM indication is correct. Holding the UP or DOWN buttons will make the clock digits scroll rapidly. Press the EXIT button to return to the Normal Run screen.
HEATING AND COOLING: Basic operation of your heating or cooling system can be obtained by choosing either HEAT or COOL on the System Mode switch. Touch the Set Temperature digits on the screen and they will begin to flash. While they are flashing, the UP and DOWN buttons will be shown also, which you can use to adjust the current Set Temperature. When the thermostat is first powered up, it will follow a default temperature routine that is preset from the factory (shown below), until the clock has been set.
|6:00 AM 70 °F (21 °C)
|6:00 AM 78 °F (26 °C)
|8:00 AM 62 °F (17 °C)
|8:00 AM 82 °F (28 °C)
|6:00 PM 70 °F (21 °C)
|6:00 PM 78 °F (26 °C)
|10:00 PM 62 °F (17 °C)
|10:00 PM 75 °F (24 °C)
There are on-screen indicators to show you when the thermostat is calling for heating or cooling to occur. In the Heat mode switch position, a flame will be present on the screen. A steady flame means that the thermostat is not calling for your heating system to run, while a flashing flame means that your heating system should be currently running. In the Cool mode switch position, a snowflake will be present on the screen. A steady snowflake means that the thermostat is not calling for your cooling system to run, while a flashing snowflake means that your cooling system should be currently running.
- EMERGENCY HEAT: (Heat Pump Configuration Only). While in normal Heat mode, one single press of the EMER button will activate Emergency Heat mode. While in Emergency Heat, the top of the screen will change from “Heat Mode” to show “Emer Heat”. A single press of the EMER button again will end Emergency Heat, and return back to normal Heat mode. If a power loss occurs while in Emergency Heat mode, the thermostat will continue to remain in Emergency Heat mode even after the power comes back on. Emergency Heat mode will prevent the first stage of your heat pump system from turning on, and use only the “W2” heat terminal (Auxiliary Heat) as the primary heating source. This will not only prevent the heat pump from wasting energy if outdoor temperatures are too low to support efficient operation, but it could also prevent damage to the heat pump if outside temperatures are below the manufacturer’s recommendations. As every heat pump has different operating characteristics, you should refer to your heat pump literature to determine when to disable the heat pump and run it in Emergency Heat mode.
- LCD DISPLAY BACKLIGHT: The display screen is lighted to assist viewing at nighttime, or in locations with low light levels. A press of any area on the touch panel will light the display for approximately 10 seconds. Any screen presses that occur while the light is on will reset the 10-second timer, causing the screen to remain illuminated for an additional 10 seconds.
- TEMPERATURE OVERRIDE: While in the Normal Run screen, the set temperature can be temporarily changed by pressing the Set Temperature digits, then press the UP or DOWN buttons. The set temperature will return to the programmed value stored in memory when the start time of the next upcoming program period is reached (Morn, Day, Eve, Nite). While a Temporary Override is in effect, the words “HEAT OVRRIDE” or “COOL OVRRIDE” will be shown in the display screen. An Override may be cancelled by either pressing the HOLD button two times, or by moving the mode switch to OFF, pausing briefly, then switching back to the HEAT or COOL position. When in the Normal Run mode, the display should say either “HEAT MODE” or “COOL MODE”.
- MINIMUM RUN TIME: The thermostat has a default internal time delay of 5 minutes between load-on and load-off activations to prevent heating or cooling system damage, which can occur from very frequent cycling. If heating or cooling does not turn on right away with a manual change in set temperature, please wait at least 5 minutes and the system should resume normal operation.
- TEMPERATURE HOLD: A Temperature Hold is used for maintaining a fixed set temperature. Once a Hold is initiated, the thermostat will maintain the set temperature indefinitely. A Hold may be used for days, weeks, or even months at a time, as long as the thermostat has adequate power. To enter
- Hold mode: press the HOLD button one time and the words “HEAT HOLD” or “COOL HOLD” will appear in the display. To cancel a Hold, press the HOLD button one more time. If a mains power failure occurs during a Temperature Hold, the thermostat will continue to remain in Hold mode even after the power comes back on.
NOTE: If you plan to leave the thermostat in Hold mode for an extended duration (unattended), it is advisable to install new Energizer® or DURACELL® “AA” size alkaline batteries prior to leaving to ensure reliable operation of your heating and cooling system.
- STATIC NOTICE: This thermostat is protected against normal static electric discharges, however, to minimize the risk of damaging the unit in extremely dry weather, please touch a grounded metal object before touching your thermostat.
By default, this thermostat has 4 separate program periods for both Heat and Cool mode, they are: MORN, DAY, EVE, and NITE. Each period ends at the start time of the following period. The heat programs are set in HEAT mode, and the cool programs are set in COOL mode.
NOTE: If the thermostat is configured to use only 2 periods per day instead of 4 (SYSTEM CONFIGURATION AND SETUP OPTIONS), the thermostat will only use the DAY and NITE periods. The MORN and EVE periods will not be visible on the screen.
SET TEMPERATURE PROGRAMS: Move the Set Slide switch to the TEMP PROG position. Programming will start with all 5 weekdays, Monday through Friday (all grouped together). Use the UP/DOWN buttons to adjust the start time for the MORN period, then press the NEXT button to advance. Use the UP/DOWN buttons to adjust the set temperature for the MORN period, then press the NEXT button to advance. Now adjust the start time and set temperature for the DAY period, pressing the NEXT button after each to advance. Continue with these same steps to adjust the start times and set temperatures for the EVE and NITE program periods.
When the NITE period is finished for the weekdays, the thermostat will advance forward to the Saturday program, with the MORN period start time flashing. Perform the same steps that you used for setting the weekday periods, pressing the NEXT button to advance through each flashing value.
When the Saturday NITE period is finished, the thermostat will advance forward to the Sunday program, with the MORN period start time flashing. Perform the same steps that you used for setting the Saturday periods, pressing the NEXT button to advance through each flashing value. Return the Set Slide switch to the RUN position when you are finished.
- TEMPERATURE CALIBRATION DESCRIPTION: The internal temperature sensor in this thermostat is accurately calibrated at the factory, and in most cases, alterations to this setting should not be needed. The Temperature Calibration feature allows you to manually offset the measured temperature by as much as plus or minus 5°F (3°C) degrees from its original value. This feature can be useful to match or synchronize this thermostat to another one or more, if multiple thermostats are used in the same home.
- TO CHANGE THE SWING, OFFSET, AND CALIBRATION: Press the MENU button, then press the SCROLL button until “SET/REVIEW SWING VALUE” is shown on the screen, then press the OK button. The words “ADJUST VALUE SWING” will appear at the top of the screen, along with a single flashing digit. Use the UP and DOWN buttons to change the number value from #1 to #9. Press the NEXT button to accept the Swing setting and proceed to the Offset setting. After the Swing value has been accepted, the words “ADJUST VALUE OFFSET” will appear at the top of the screen, along with a single flashing temperature digit. Use the UP and DOWN buttons to change the number value between 0°F and 9°F degrees (0°C to 5°C). The 0° (zero) degree setting will disable the 2nd heating stage while in regular Heat mode. Press the NEXT button to accept the Offset setting and proceed to the Calibration setting. After the Offset value has been accepted, the words “ADJUST VALUE CAL” will appear at the top of the screen, along with a single flashing temperature digit. Use the UP and DOWN buttons to change the number value between –5°F and +5°F (–3°C and +3°C). The 0° (zero) degree setting is the default value, and will not alter the displayed room temperature from the measured reading. Press the NEXT button to accept the Calibration setting and return back to the setting. You can keep pressing the NEXT button to review your three setting values, or press the EXIT button to return to the Normal Run screen.
- SETBACK FEATURE: The setback feature is similar to both a Temperature Override and a Temperature Hold, in that both are used to maintain a fixed set temperature instead of following a programmed daily routine. A Setback can be considered the same as a Temperature Override, which can last for a longer duration that you can adjust from 1-12 hours, or 1-30 days. By default, when a Setback is activated in Heat mode, the set temperature used will be 5F (3C) degrees lower than the current set temp. For Cool mode, the set temperature used will be 5F (3C) degrees higher than the current set temp.
NOTE: The Setback settings need to be performed in a timely manner, as the thermostat will timeout and automatically exit these adjustment screens after approximately 10 seconds without a button press.
- TEMPERATURE LIMIT STOPS: There are two independent set temperature limit stops: a maximum heat set temperature, and a minimum cool set temperature. These stops do not prevent a user from performing normal actions like Temperature Override or Hold. The Heat Limit Stop prevents the set temperature from being adjusted higher than the heat limit setting. The Cool Limit Stop prevents the set temperature from being adjusted lower than the cool limit setting. Each of these temperature stops is user adjustable in one-degree increments, and these settings are protected by a selectable 2digit code to prevent unauthorized tampering. By default, this 2-digit code is “00”, and the temperature stops can be used as-is with this code.
NOTE: The Temperature Limit Stop settings need to be performed in a timely manner, as the thermostat will timeout and automatically exit the setting screens after approximately 10 seconds without a button press. The following examples are shown for setting the maximum set temperature for Heat mode. Setting the Temperature Limit Stop for Cool mode is done in the same exact manner with the System Mode switch in the Cool position, and instead you will be setting the minimum set temperature for cooling. Once a Temp Stop Lock Code has been selected, this same code is used for both Heat and Cool temp stops.
- TO SET THE TEMPERATURE LIMIT STOP: Press the MENU button, then press the SCROLL button until “SET HEAT TEMP STOP” is shown, then press the OK button. The words “ENTER CODE” and “TEMP STOP” will appear at the top of the screen, along with two digits at the left. Use the UP and DOWN buttons to enter the current Temp Stop Lock Code (“00” by default). Press the NEXT button to advance. If the code entered does not match the current Temp Stop Lock Code, the words “WRONG CODE” will flash briefly, and you may try to enter the correct code again. If the current code has been entered correctly, you will have the ability to change the desired Temp Stop Lock Code to something else. The words “SET CODE” and “TEMP STOP” will appear at the top of the screen, along with two digits at the left. Use the UP and DOWN buttons to enter the desired Temp Stop Lock Code to be used, and press the NEXT button to advance. The words “SET HEAT RANGE STOP” will appear at the top of the screen, along with two large temperature digits in the middle. Use the UP and DOWN buttons to adjust the desired maximum heat set temperature value (or minimum set temperature value for Cool mode). Once complete, press the NEXT button to accept the setting and return to the Normal Run screen. IF YOU FORGET YOUR TEMPERATURE STOP LOCK CODE: The code can be reset to the factory default “00” by performing the following steps. Start with the System Mode switch in either the Heat or Cool positions, then change to the OFF position. Press and hold the HOLD, NEXT, and OK buttons all at the same time for at least 10 seconds. The screen will briefly show “00” on the screen to confirm that the Temp Stop Lock Code has been successfully reset to the factory default of “00”.
- KEYPAD LOCKOUT: You can lock the touch panel buttons to prevent unauthorized tampering of your thermostat settings.
NOTE: These keypad lock instructions need to be performed in a timely manner, as the thermostat will timeout and automatically exit the keypad lock screens and return to the Normal Run screen after approximately 10 seconds without a button press.
- TO LOCK THE KEYPAD: The System Mode switch must be in either the Heat or Cool position. Press the MENU button, then press the SCROLL button until “SET KEYBOARD LOCK CODE” is shown, then press the OK button. The words “ENTER CODE” will appear at the top of the screen, along with four digits at the left. Select a 4-digit code that you would like to use for locking the thermostat. Press the UP and DOWN buttons to change each digit individually, using the NEXT button to cycle through which digit is selected. Pressing the OK button will lock the thermostat touch panel using the 4-digit code that is shown on the screen, and return to the Normal Run screen with a padlock shown to confirm that the thermostat is now locked.
- TO UNLOCK THE KEYPAD: Press the padlock icon, and the words “UNLOCK KEYBOARD?” will appear at the top of the screen. Press OK to proceed with entering the unlock code (or press the EXIT button to cancel). The words “ENTER CODE” will appear at the top of the screen, along with four digits at the left. You will need to enter the proper unlock code that was used for initially locking the thermostat. Press the UP and DOWN buttons to change each digit individually, using the NEXT button to cycle through which digit is selected.
- GRAPHICAL AIR FILTER MONITOR: In most systems that use a blower fan and air ducts, there is an air filter that is either replaceable or requires cleaning. The filter is usually located in the air handler, where the blower fan is. This thermostat feature assists you with keeping track of proper maintenance and/or periodic replacement intervals for your system’s filter.
The Graphical Filter Monitor displays a visual bar graph in the center of the screen, which shows the amount of air filter life remaining (in % percent), since the last time the air filter timer has been reset. Each dot in the filter bar graph equals 10 percent (example: 4 dots shown means 40 percent filter life remaining). This feature is for information purposes only, and does not affect the operation of your heating or cooling equipment, or the thermostat. When the filter usage duration has completly expired, the vertical filter bar graph will be empty, and the word “FILTER” will flash on the screen.
- TO SET THE AIR FILTER DURATION: Move the Set Slide switch to the “AIR FILTER” position. The words “SET DAYS” will be shown on the screen, along with the word “FILTER” and 2-3 characters at the top right corner of the display. Press either of the UP/DOWN buttons to select the desired filter duration (in days) from the following choices: OFF, 30, 60, 90, 120, 180, or 365. If the filter duration value is set to “OFF”, then the Air Filter Monitor will be completely disabled. Return the Set Slide switch to the RUN position when you are finished.
- TO RESET THE FILTER USAGE COUNTER: Move the Set Slide switch to the “AIR FILTER” position. The three small digits at the bottom of the screen tell you the quantity of filter days remaining. Pressing the NEXT button will toggle the display between showing the days remaining as a number, or a graphical precentage remaining using the vertical bar graph. Press both the UP and DOWN buttons together at the same time, and the usage counter will return to the beginning of the value that it originally started counting from. Refer to the previous paragraph, should you wish to change the starting value for the filter monitor. Return the Set Slide switch to the RUN position when you are finished.
- HARDWARE RESET: The Hardware Reset button (labeled “HW RST”) is a small round push button that is located towards the right side of the circuit board, just below the battery holder. Pressing this button will cause the LCD display screen to become fully populated, the heating and cooling load relays to cycle off, read the position of the Hardware Setup Option switches, and will perform an internal system check of the thermostat components. If your thermostat appears to be acting in an erratic manner, pressing the Hardware Reset button may remedy this behavior. The temperature programs are not erased when a hardware reset is performed, however, the clock will have to be changed to match the current day and time.
- SOFTWARE RESET: The Software Reset button (labeled “SW RST”) is a small round push button that is located towards the right side of the circuit board, just below the battery holder. A Software Reset is used to erase all heating and cooling temperature programs, and any user-adjustable software values such as: Swing, Offset, and Calibration, to their original factory default values. To perform a Software Reset, press and hold the Software Reset button for at least 5 seconds. The LCD display screen will become fully populated, then return to normal. The thermostat will still retain the current day and time even after a Software Reset has been performed.
- COMPRESSOR PROTECTION BYPASS: This optional feature permits the installer or service technician to temporarily disable the built-in compressor protection delays. This is most useful for diagnosing and testing the heating and cooling systems after installation is complete, and should not be used during normal operation. To activate this feature, start with the System Mode switch in either the Heat or Cool positions, then change to the OFF position. Press and hold the OK button for at least 5 second. The thermostat will give a single beep sound to confirm that this feature has been activated. All compressor protection delays (in all modes of operation) will be disabled for 5 minutes. After the 5-minute duration has expired, the thermostat will return to normal operation automatically.
This thermostat is powered by two “AA” Alkaline batteries. The batteries should be replaced AT LEAST once per year to ensure reliable operation (or sooner, if the “LO-BATTERY” icon appears at the bottom of the display screen). The batteries are located on the back of the thermostat, at the top of the circuit board. The front portion of the thermostat can be removed from the back half by pulling straight outwards on the top and bottom of the thermostat housing, at the large indentations that are present in the center of the top and bottom edges. When installing new batteries, we recommend using only brand new Energizer® or DURACELL®, “AA” size alkaline batteries. Please observe the polarity markings shown in the battery compartment to ensure proper installation. When finished, line up the of thermostat to the base, and firmly press together to securely latch the front and back halves together properly.
Anytime that batteries are physically present in the thermostat, there will be a visual indication of the remaining battery life available on the thermostat’s display screen. When brand new batteries are installed in the battery compartment, this graphic should indicate full battery life remaining with all bars present.
Over time, as the battery life decreases to the point of having only 1 bar left, the Temperature and Clock digits will start to alternate between showing their normal content, and the words “LO BATT”. At this point the batteries will need to be replaced as soon as practical to avoid uninterrupted operation of your heating and/or cooling system. In most cases, the thermostat will be capable of providing you approximately two months of normal operation once the point of 1 bar left has been reached, and the screen shows the words “LO BATT”.
If you have any problems installing or using this thermostat, please carefully and thoroughly review the instruction manual. If you require assistance, please contact our Technical Assistance department at 856-234-8803 during regular business hours between 8:00AM and 4:30PM Eastern Standard Time, Monday through Friday. You can also receive technical assistance online anytime day or night at http://www.luxproducts.com. Our website offers you troubleshooting guides, and answers to the most common technical questions, and also permits you to email your questions to our technical support staff at your convenience.
If this unit fails because of defects in materials or workmanship within three years of the date of original purchase, LUX will, at its option, repair or replace it. This warranty does not cover damage by accident, misuse, or failure to follow installation instructions. Implied warranties are limited in duration to three years from the date of the original purchase. Some states do not allow limitations on how long an implied warranty lasts, so the above limitation may not apply to you. Please return malfunctioning or defective units to the location from which the purchase was made, along with proof of purchase. Please refer to “TECHNICAL ASSISTANCE” before returning the thermostat. Purchaser assumes all risks and liability for incidental and consequential damage resulting from the installation and use of this unit. Some states do not allow the exclusion of incidental or consequential damages, so the above exclusion may not apply to you. This warranty gives you specific legal rights and you may also have other rights, which vary from state to state. Applicable in the U.S.A. and Canada only.
MERCURY WARNING AND RECYCLING NOTICE
Mercury is considered to be a hazardous material. If this product is replacing a thermostat that contains mercury in a sealed tube, contact your local waste management authority for instructions regarding recycling and proper disposal. It may be unlawful in your state to place it in the trash.
Philadelphia, PA 19112