1. Introducció
The LUX LTX700U-A04 is a versatile 7-day programmable thermostat designed to provide precise temperature control for your home. It offers unique programming for every day of the week, with options for 2 or 4 periods per day, allowing for flexible scheduling to match your lifestyle. Key features include temporary override, manual hold, keyboard lock, and an easy-to-read backlit display.
This thermostat is compatible with conventional heat & A/C systems, heat pumps with up to 2 stage calor/1 stage cool, 3-wire heat-only hydronic systems, hot water, zone valves, and gas millivolt heaters.

Figura 1: Frontal view of the LUX LTX700U-A04 Thermostat, showing the digital display and control buttons.
2. Configuració i instal·lació
Before installation, ensure the power to your heating/cooling system is turned off at the main breaker. This thermostat is dual-powered and requires two "AA" alkaline batteries (not included) for operation, or can be powered by the system's 24V AC supply.
2.1. Compatibilitat
The LTX700U-A04 is designed for broad compatibility. Please review la taula de compatibilitat següent per assegurar-vos que el vostre sistema sigui compatible.

Figure 2: System compatibility chart for the LTX700U-A04 thermostat, detailing compatible and non-compatible HVAC systems.
Sistemes compatibles:
- Gas/Oil/Electric Furnace - Heating only
- Gas/Oil/Electric Furnace - Multistage
- Gas/Oil/Electric Furnace - Single Stage
- Bomba de calor sense calor auxiliar
- Bomba de calor amb calor auxiliar
- 2-wire Hydronic (Hot Water)
- 3-wire Hydronic (Hot Water)
- Sistemes de 750 mil·livolts
- Gas Fireplaces (24V)
- Cooling only systems
- Cool Multistagi sistemes
- S individualtage cooling systems
No compatible amb:
- Bomba de calor multifuncionaltage
- Calefacció radiant de sostre
- Electric Baseboards
- Portable space heaters
- Plug-in air conditioners
2.2. Esquemes de cablejat
Refer to the following diagrams for proper wiring connections based on your HVAC system type. Always consult a qualified technician if you are unsure about wiring procedures.

Figure 3: Wiring diagram for conventional (non-heat pump) 2-stage calefacció i 1-stage cooling systems (5, 6 wires).

Figure 4: Wiring diagram for conventional (non-heat pump) 1-stage calefacció i 1-stage cooling systems with two separate 24V transformers (5, 6 wires).

Figure 5: Wiring diagram for single-stage heat pump systems with no auxiliary or emergency heat (4, 5 wires).
3. Instruccions de funcionament
The LTX700U-A04 thermostat is designed for ease of use with its intuitive control panel and large backlit display.

Figure 6: The simple and intuitive control panel of the LTX700U-A04 thermostat, highlighting its user-friendly design.
3.1. Programació del termòstat
The thermostat allows for 7-day programming, meaning you can set a unique schedule for each day of the week. You can choose between 2 or 4 programming periods per day (e.g., Morning, Day, Evening, Night) to optimize energy savings and comfort.
- Configuració de l'hora i el dia: Access the menu to set the current time and day of the week.
- Scheduling Periods: For each day, define the start time and desired temperature for each of your chosen periods (2 or 4).
- Speed Slide: Utilize the speed slide feature for quick and easy programming adjustments.
3.2. Temperature Control Features
- Anul·lació temporal: Adjust the temperature temporarily without changing your programmed schedule. The thermostat will revert to the schedule at the next programmed period.
- Retenció manual: Set the thermostat to a constant temperature indefinitely. This feature overrides all programming until manually cancelled.
- Bloqueig del teclat: Prevent unauthorized changes to your settings by activating the keyboard lock feature.
- Fahrenheit/Celsius Setting: Easily switch between Fahrenheit and Celsius temperature displays.
- Adjustable Temperature Swing Differential: Customize the temperature differential (the range around the setpoint before the system activates) to optimize system cycling and comfort.
- Adjustable Second Stage Heat Offset: Fine-tune the activation point for the second stage of heating in compatible systems.
- Selectable Smart Recovery: This feature allows the thermostat to learn how long it takes to reach a desired temperature, activating the system early to ensure the target temperature is met by the start of your programmed period.
4. Manteniment
Un manteniment regular garanteix un rendiment òptim i una llarga vida útil del termòstat.
4.1. Substitució de la bateria
The thermostat uses two "AA" alkaline batteries. When the battery indicator appears on the display, replace both batteries promptly. Low batteries can affect thermostat operation and lead to system malfunctions. Ensure proper polarity when inserting new batteries.
4.2. Air Filter Monitor
The LTX700U-A04 includes an air filter monitor feature. This reminds you when it's time to check or replace your HVAC system's air filter, promoting better air quality and system efficiency. Refer to your system's manual for filter replacement instructions.
5. Solució De Problemes
If you encounter issues with your thermostat, try the following troubleshooting steps:
| Problema | Causa possible | Solució |
|---|---|---|
| La pantalla està en blanc o tènue. | Low or dead batteries; no power from HVAC system. | Replace batteries. Check circuit breaker for HVAC system. Ensure proper wiring connections. |
| Thermostat not responding to settings. | Keyboard lock engaged; incorrect mode (Heat/Cool/Off); wiring issue. | Deactivate keyboard lock. Verify system mode. Check wiring connections. |
| System (heating/cooling) not turning on. | Incorrect temperature setting; system mode incorrect; safety lockout; wiring issue. | Adjust set temperature. Ensure thermostat is in Heat or Cool mode. Wait 5 minutes for system to reset after power cycle. Verify wiring. |
| Les lectures de temperatura semblen inexactes. | Termòstat situat a prop d'una font/corrent d'aire de calor; problema amb el sensor intern. | Ensure thermostat is not exposed to direct sunlight, drafts, or heat sources. If problem persists, contact support. |
| Programming is not holding. | Manual Hold active; power interruption; programming error. | Cancel Manual Hold. Re-enter program settings carefully. Ensure stable power supply. |
For issues not listed here or if troubleshooting steps do not resolve the problem, please contact LUX customer support.
6. Especificacions
| Característica | Detall |
|---|---|
| Marca | LUX |
| Número de model | TX700U (LTX700U-A04) |
| Tipus de controlador | Remote Control (via buttons) |
| Característiques especials | Auto Changeover, Programmable (7-Day) |
| Tipus de control de temperatura | Programable |
| Components inclosos | Termostat programable de 7 dies |
| Font d'alimentació | Battery Powered (2 AA batteries required, not included) / System 24V AC |
| Voltage | 230 Volts (System Compatibility) |
| Tipus de visualització | LCD amb llum de fons |
| Tipus de control | Control de botons |
| Tipus de muntatge | Muntatge de paret |
| Dimensions del producte | 7.1 x 1.38 x 10.9 polzades |
| Pes de l'article | 8.1 unces |
| UPC | 021079157006 |
| Fabricant | EME Delaware |
7. Garantia i Suport
7.1. Garantia limitada
The LUX LTX700U-A04 Thermostat comes with a Garantia limitada de 3 anys from the date of purchase. This warranty covers defects in materials and workmanship under normal use. Please retain your proof of purchase for warranty claims. For full warranty terms and conditions, refer to the documentation included with your product or visit the manufacturer's weblloc.

Figure 7: Product features highlighting the 7-day/5-2 day programming, battery/system power, 2 heat/1 cool stages, and the 3-year limited warranty.
7.2. Atenció al client
For technical assistance, troubleshooting, or warranty inquiries, please contact LUX customer support. You can find contact information on the official LUX weblloc web o dins de l'embalatge del producte.
Manufacturer: EME Delaware





