1. Introducción
This manual provides detailed instructions for the installation, operation, and maintenance of your TECNOSWITCH CR025BI Digital Weekly Wall Thermostat. Please read this manual carefully before installation and use to ensure proper functionality and to avoid any potential issues. Keep this manual for future reference.
2. Producto terminadoview
The TECNOSWITCH CR025BI is a programmable digital thermostat designed for controlling heating and cooling systems. It features a clear blue backlit LCD display for easy reading and intuitive controls for daily or weekly programming.

Figura 1: TECNOSWITCH CR025BI Digital Weekly Wall Thermostat. This image shows the TECNOSWITCH CR025BI digital weekly wall thermostat. The device is white with a hinged cover. When open, it reveals a central LCD display, surrounded by a circular arrangement of time markers. Below the display are various control buttons, including temperature adjustment (+/-), mode selection (heating/cooling), and confirmation (OK). The display is backlit in blue.
Características principales:
- Blue backlit LCD display
- Daily or weekly programming options
- Función de calefacción y refrigeración.
- Temperature regulation range: +5°C to +35°C
- Thermal differential: +/- 0.3°C
- Minimum programming interval: 30 minutes
- Power reserve for program retention during battery changes
3. Información de seguridad
- Installation should only be performed by a qualified electrician in accordance with local electrical codes.
- Desconecte siempre la alimentación del sistema de calefacción/refrigeración en el disyuntor principal antes de instalar o realizar mantenimiento al termostato.
- No exponga el termostato al agua ni a la humedad excesiva.
- Use only AA alkaline batteries. Do not mix old and new batteries or different types of batteries.
4. Instalación (Configuración)
4.1. Ubicación de montaje
Choose an indoor wall location approximately 1.5 meters (5 feet) from the floor, away from direct sunlight, drafts, and heat sources (e.g., radiators, televisions) that could affect temperature readings.
4.2. Instalación de la batería
- Abra la cubierta frontal del termostato.
- Insert two (2) AA alkaline batteries into the battery compartment, observing the correct polarity (+/-).
- The thermostat will power on, and the display will activate. The batteries provide approximately 1 year of autonomy. The device includes a power reserve to maintain programmed settings during battery replacement.
4.3. Conexión eléctrica
WARNING: Disconnect power at the main circuit breaker before proceeding.
- Remove the thermostat's backplate from the main unit.
- Connect the system wires to the appropriate terminals on the backplate. The contact rating is 8(5)A at 250Vac. Refer to your heating/cooling system's wiring diagram for specific connections.
- Fije la placa posterior a la pared mediante tornillos.
- Attach the main thermostat unit to the backplate, ensuring it clicks securely into place.
- Restablezca la energía en el disyuntor principal.
5. Operación
5.1. Configuración de la hora y el día actuales
Upon initial power-up or after a prolonged power loss, you may need to set the current time and day. Consult the specific instructions in your thermostat's full manual for the exact button sequence. Generally, this involves pressing a 'SET' or 'CLOCK' button, using '+' and '-' buttons to adjust values, and 'OK' or 'SET' to confirm.
5.2. Selecting Operating Mode (Heating/Cooling)
The thermostat supports both heating and cooling functions. Use the mode selection button (often indicated by a snowflake for cooling and a flame for heating, or a simple 'MODE' button) to switch between modes. The current mode will be displayed on the LCD.
5.3. Ajuste de la temperatura
In manual mode, use the '+' and '-' buttons to set your desired temperature. The thermostat will maintain the room temperature within the range of +5°C to +35°C with a thermal differential of +/- 0.3°C.
6. Programación
The CR025BI allows for daily or weekly programming, enabling you to set different temperatures for various times of the day and days of the week. The minimum programming interval is 30 minutes.
6.1. Entrar al modo de programación
Press the 'PROG' or 'P' button to enter programming mode. The display will typically show a day of the week and a time slot for adjustment.
6.2. Setting Programs
- Use the 'DAY' button to select the day or group of days you wish to program (e.g., Monday-Friday, Saturday-Sunday, or individual days).
- Use the 'TIME' or arrow buttons to navigate through the 30-minute time intervals.
- Use the '+' and '-' buttons to set the desired temperature for each time interval.
- Repita este proceso para todos los horarios y días deseados.
- Press 'OK' or 'PROG' again to exit programming mode and save your settings.
Refer to the detailed programming section in your full user manual for advanced programming options and specific button functions.
7. Mantenimiento
7.1. Reemplazo de la batería
When the low battery indicator appears on the display, replace the two AA alkaline batteries promptly. The thermostat has a power reserve feature that will retain your programmed settings for a short period during battery replacement.
- Abra la cubierta frontal.
- Retire las baterías viejas.
- Inserte dos pilas alcalinas AA nuevas, asegurándose de la polaridad correcta.
- Cierre la cubierta frontal.
7.2. Limpieza
Clean the thermostat's exterior with a soft, dry cloth. Do not use abrasive cleaners, solvents, or spray directly onto the unit.
8. Solución de problemas
- La pantalla está en blanco: Check if batteries are correctly inserted or need replacement.
- El sistema no responde: Ensure the thermostat is in the correct operating mode (heating/cooling). Check the main power supply to your heating/cooling system. Verify wiring connections.
- Lectura de temperatura incorrecta: Asegúrese de que el termostato no esté expuesto a la luz solar directa, corrientes de aire o fuentes de calor.
- Problemas de programación: Re-enter programming mode and verify all settings. Ensure the current time and day are set correctly.
If problems persist, consult a qualified technician or contact TECNOSWITCH customer support.
9. Especificaciones
| Característica | Especificación |
|---|---|
| Fabricante | TECNOSWITCH |
| Número de modelo | CR025BI |
| Tipo de energía | 2 pilas AA |
| Autonomía de la batería | Aprox. 1 año |
| Estilo de pantalla | LCD retroiluminado azul |
| Rango de regulación de temperatura | De +5 °C a +35 °C |
| Diferencial térmico | +/- 0.3 °C |
| Calificación de contacto | 8(5)A 250Vca |
| Intervalo de programación | Mínimo 30 minutos |
| Funciones | Refrigeración calefacción |
| Dimensiones (L x An x Pr) | 145 x 95 x 25 mm |
| Peso del artículo | 998 gramos |
10. Garantía y soporte
For warranty information, technical support, or service inquiries, please contact TECNOSWITCH directly or refer to the warranty card included with your product. Keep your proof of purchase for warranty claims.





