1. Introducció
This instruction manual provides detailed guidance for the installation, operation, and maintenance of your SereneLife 18,000 BTU Mini Split AC & Heating System, Model SLSPLTST18B. To ensure optimal performance, safety, and longevity of your unit, please read these instructions thoroughly before installation and use. Keep this manual for future reference.
Informació important de seguretat
- Assegureu-vos sempre que la unitat estigui correctament connectada a terra.
- Installation should be performed by a qualified professional to prevent electric shock, fire, or serious injury.
- No feu funcionar la unitat amb les mans mullades.
- Do not block the air intake or outlet of the indoor or outdoor unit.
- Desconnecteu l'alimentació abans de netejar o realitzar qualsevol manteniment.
2. Producte acabatview
The SereneLife 18,000 BTU Mini Split AC & Heating System is designed to provide efficient cooling and heating for spaces up to 1000 sq. ft. This 230V system includes both indoor and outdoor wall-mounted units, offering year-round comfort with advanced features like WiFi connectivity for remote control.

Figure 2.1: SereneLife 18,000 BTU Mini Split AC and Heating System, showing both indoor and outdoor units.
Característiques clau
- Smart Cooling & Heating: Precise temperature control with WiFi connectivity for remote operation.
- Energy Efficient Performance: Designed to reduce energy costs while maintaining optimal comfort.
- Funcionament silenciós: Noise levels as low as 32 dB for an undisturbed environment.
- Funció de reinici automàtic: Automatically resumes operation after power failures.
- Multiple Modes & Timer Settings: Offers Auto, Cool, Dry, Fan, and Heat modes with adjustable fan speeds and a programmable timer.

Figure 2.2: The SereneLife Mini Split AC unit providing powerful and efficient cooling, suitable for large spaces.

Figure 2.3: Demonstrating WiFi intelligent control, allowing adjustments via a smartphone app or voice assistant.

Figure 2.4: Illustrating the all-season comfort provided by the unit, featuring cool, heat, dehumidifier, and fan modes.
3. Configuració i instal·lació
The SereneLife Mini Split AC & Heating System comes with a complete installation kit. However, due to the complexity of refrigerant lines and electrical connections, professional installation is strongly recommended to ensure proper function and safety, and to maintain warranty validity.
Components inclosos
El paquet inclou els articles següents:
- Unitat interior
- Unitat exterior
- Comandament a distància i bateries
- 5-meter Copper Pipe
- Cable d'alimentació CA
- Cable de senyal
- Escuma d'aïllament
- Junta de drenatge
- Mànega de desguàs
- Màniga de paret
- Tap de paret
- Goma de segellar
- Cargols i ancoratges de paret

Figure 3.1: All components included in the installation kit for the SereneLife Mini Split AC system, including indoor and outdoor units, remote, and various pipes and cables.
Comprovacions prèvies a la instal·lació
- Verify that the power supply matches the unit's requirements (230V).
- Ensure the installation location for both indoor and outdoor units allows for proper airflow and drainage.
- Confirm that the wall structure can support the weight of the indoor unit.
General Installation Steps (Professional Recommended)
- Mount the indoor unit on a sturdy wall, ensuring it is level and has adequate clearance.
- Install the outdoor unit on a stable, level surface, away from obstructions.
- Connect the refrigerant lines between the indoor and outdoor units, ensuring proper sealing and vacuuming.
- Connect the electrical wiring according to the wiring diagram provided in the full manual.
- Install the drain hose for condensate removal.
- Perform a leak test and functional test after installation is complete.
4. Instruccions de funcionament
Your SereneLife Mini Split system offers various modes and settings for customized comfort. Control the unit using the included remote control or via the WiFi-enabled smartphone app.
Modes de funcionament
- Mode fresc: Proporciona refrigeració per baixar la temperatura ambient.
- Mode de calor: Proporciona calefacció per augmentar la temperatura de l'habitació.
- Mode sec (deshumidificador): Redueix la humitat de l'aire sense refredar-lo significativament.
- Mode de ventilador: Circulates air without heating or cooling. Fan speed can be adjusted.
- Mode automàtic: Automatically selects the appropriate mode (Cool, Heat, or Fan) based on the set temperature and current room temperature.

Figure 4.1: The unit offers customizable comfort with modes like Turbo for rapid cooling/heating, Eco for energy saving, Sleep for night-time comfort, and Gentle Wind for soft airflow.
Característiques especials
- Mode silenciós: Operates at the lowest possible noise level for minimal disturbance.
- Mode de repòs: Adjusts temperature and fan speed automatically during sleep for enhanced comfort and energy saving.
- Temporitzador programable: Set the unit to turn on or off automatically at desired times.
- WiFi habilitat: Control your unit remotely using the SereneLife smartphone application.

Figure 4.2: Highlighting the ultra-quiet performance of the unit, ideal for bedrooms, and its 24-hour timer function.
5. Manteniment
Regular maintenance ensures efficient operation and extends the lifespan of your SereneLife Mini Split system. Always disconnect power before performing any maintenance.
Neteja i substitució del filtre
The air filters should be cleaned regularly, typically every two weeks, or more frequently depending on usage and air quality. Dirty filters can reduce efficiency and airflow.
- Obriu el panell frontal de la unitat interior.
- Traieu els filtres d'aire.
- Clean filters with a vacuum cleaner or wash them with lukewarm water and mild detergent.
- Deixeu que els filtres s'assequin completament abans de tornar-los a instal·lar.
- Replacement filters (Model: PRTSLSPLTFLTR) are available and should be replaced as needed, typically annually.
Indoor Unit Cleaning
- Netegeu l'exterior de la unitat interior amb un drap suau i sec.amp tela. No utilitzeu productes químics aggressivs ni netejadors abrasius.
- Ensure the condensate drain pan and line are clear of obstructions to prevent water leakage.
Outdoor Unit Maintenance
- Keep the area around the outdoor unit clear of debris, leaves, and other obstructions to ensure proper airflow.
- Netegeu periòdicament les aletes de la serpentina exterior amb un raspall suau o una mànega d'aigua. Aneu amb compte de no doblegar les aletes.
- Check for any signs of damage to refrigerant lines or electrical connections.
6. Solució De Problemes
Abans de contactar amb l'atenció al client, consulteu la guia de resolució de problemes següent per conèixer els problemes més comuns.
| Problema | Causa possible | Solució |
|---|---|---|
| La unitat no s'encén | Sense subministrament d'alimentació; piles del comandament a distància esgotades; interruptor automàtic saltat. | Comproveu la connexió d'alimentació; Substituïu les piles del comandament a distància; Restableix l'interruptor automàtic. |
| Refrigeració/calefacció insuficient | Dirty air filters; Blocked air intake/outlet; Incorrect mode setting; Room size too large. | Clean/replace air filters; Clear obstructions; Select correct mode; Ensure unit matches room size. |
| Fuita d'aigua de la unitat interior | Mànega de desguàs obstruïda; instal·lació incorrecta. | Clear drain hose; Contact professional for inspection. |
| Soroll inusual | Peces soltes; Obstrucció al ventilador; Unitat no anivellada. | Check for loose parts; Remove obstructions; Ensure unit is level. If noise persists, contact service. |
| Problemes de connexió Wi-Fi | Router issues; Incorrect WiFi settings; App not updated. | Restart router; Reconfigure WiFi settings in app; Update app to latest version. |
7. Especificacions
Technical specifications for the SereneLife 18,000 BTU Mini Split AC & Heating System.
| Característica | Especificació |
|---|---|
| Marca | Vida Serena |
| Nom del model | SLSPLTST18B |
| Capacitat | 1.5 tones |
| Potència de refrigeració | 18,000 unitats tèrmiques britàniques (BTU) |
| Voltage | 230 Volts |
| Ràtio d'eficiència energètica estacional (SEER) | 21 |
| Nivell de soroll (unitat exterior) | 55 decibels |
| Cobertura de la superfície del sòl | Fins a 1000 peus quadrats |
| Dimensions del producte (P x A x A) | 13.75 "P x 39.75" W x 23.75" H |
| Pes de l'article | 70.5 lliures |
| Mètode de control | Control d'aplicacions, control remot |
| Tipus d'instal·lació | Sistema dividit |
| Tipus de compressor | Rotary Scroll |
| Consum anual d'energia | 1844 quilowatts-hora |
| UPC | 842893182766 |
8. Garantia i assistència
SereneLife is committed to providing quality products and support to its customers.
Informació de la garantia
This SereneLife Mini Split AC & Heating System comes with a 1 anys de garantia des de la data de compra. Aquesta garantia cobreix els defectes de materials i de fabricació en condicions d'ús normal. Conserveu el comprovant de compra per a reclamacions de garantia.
The warranty does not cover damage resulting from improper installation, misuse, neglect, unauthorized repairs, or acts of nature. For detailed warranty terms and conditions, please refer to the warranty card included with your product or visit the official SereneLife weblloc.
Atenció al client
For technical assistance, troubleshooting beyond this manual, or warranty service, please contact SereneLife customer support. With 65 years of trust, quality, and USA-based servicing, SereneLife ensures lasting support and reliability for its valued customers.
Please have your model number (SLSPLTST18B) and proof of purchase ready when contacting support.