1. Introdución
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. Produto rematadoview
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 principais:
- Blue backlit LCD display
- Daily or weekly programming options
- Función de calefacción e refrixeración
- 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 seguridade
- Installation should only be performed by a qualified electrician in accordance with local electrical codes.
- Desconecte sempre a alimentación do sistema de calefacción/refrixeración no disxuntor principal antes de instalar ou realizar o mantemento do termostato.
- Non expoñas o termostato á auga nin a humidade excesiva.
- Use only AA alkaline batteries. Do not mix old and new batteries or different types of batteries.
4. Instalación (Configuración)
4.1. Lugar de montaxe
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 da batería
- Open the front cover of the thermostat.
- 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.
- Secure the backplate to the wall using screws.
- Attach the main thermostat unit to the backplate, ensuring it clicks securely into place.
- Restablecer a corrente no disxuntor principal.
5. Funcionamento
5.1. Axuste da hora e do día actuais
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. Axuste da 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 no 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 para todas as franxas horarias e días desexados.
- 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. Mantemento
7.1. Substitución da 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 a tapa frontal.
- Retire as pilas antigas.
- Insira dúas pilas alcalinas AA novas, asegurándose de manter a polaridade correcta.
- Pecha a tapa frontal.
7.2. Limpeza
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
- A pantalla está en branco: Check if batteries are correctly inserted or need replacement.
- System not responding: 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: Asegúrate de que o termostato non estea exposto á luz solar directa, a correntes de aire ou a fontes 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. Especificacións
| Característica | Especificación |
|---|---|
| Fabricante | TECNOSWITCH |
| Número de modelo | CR025BI |
| Tipo de potencia | 2 pilas AA |
| Autonomía de batería | Aprox. 1 ano |
| Estilo de visualización | LCD retroiluminada en azul |
| Rango de regulación de temperatura | +5 °C a +35 °C |
| Thermal Differential | +/- 0.3 °C |
| Valoración de contacto | 8(5)A 250Vac |
| Programming Interval | Mínimo 30 minutos |
| Funcións | Calefacción / Refrixeración |
| Dimensións (L x W x D) | 145 x 95 x 25 mm |
| Peso do elemento | 998 g |
10. Garantía e 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.