Introdución
This manual provides detailed instructions for the safe and efficient operation, installation, and maintenance of your Keystone KSTAT12-1E 12,000 BTU Wall Mounted AC Unit and Dehumidifier. Please read this manual thoroughly before using your appliance and retain it for future reference.

Imaxe: Fronte view of the Keystone KSTAT12-1E 12,000 BTU Wall Mounted AC Unit. This unit is designed for through-the-wall installation, featuring a white grille and control panel on the top left.
Información de seguridade
Siga sempre as precaucións de seguridade básicas ao usar electrodomésticos para reducir o risco de incendio, descarga eléctrica e lesións ás persoas.
- Le todas as instrucións antes de usar o aparello.
- Asegúrese de que a unidade estea correctamente conectada a terra.
- Non utilice a unidade cun cable ou enchufe danados.
- Non bloquee as entradas ou saídas de aire.
- Desenchufe a unidade antes da limpeza ou mantemento.
- Manter aos nenos afastados do aparello.
Características do produto
- Capacidade de refrixeración: 12,000 BTU, suitable for rooms up to 550 Sq.Ft.
- Deshumidificación: Elimina ata 2.5 pintas de humidade por hora.
- Modos múltiples: 3 cooling modes, 3 fan speeds.
- Control de fluxo de aire: 4-way adjustable air louvers.
- Temporizador programable: Temporizador de 24 horas para funcionamento programado.
- Control remoto intelixente: Features a built-in thermostat for accurate temperature sensing at your location.
- Modos de aforro de enerxía: Energy Saver and Sleep modes to optimize power consumption.
- Filter Alert: "Check Filter" alert for timely mesh filter cleaning.
- Potencia: Funcionamento en 115V.

Image: Graphic illustrating the 3-in-1 technology of the Keystone AC unit, highlighting powerful cooling (12,000 BTU - 550 Sq. Ft.), air flow (3 fan speeds), and dehumidification (2.3 Pints per Hour).
Configuración e instalación
This unit is designed for through-the-wall installation. A standard universal interior trim kit is included for ease of installation. A wall sleeve (sold separately) is required for proper installation.
Lista de verificación previa á instalación:
- Ensure the wall opening dimensions are compatible with the unit and wall sleeve.
- Verify electrical requirements (115V, NEMA 5-15P plug type).
- Confirm the unit's weight (approximately 73 lbs) can be supported by the installation structure.
- Gather necessary tools (screwdriver, level, measuring tape, etc.).
Pasos de instalación (resumo):
- Install the wall sleeve (if not already present) according to its manufacturer's instructions, ensuring it is level and properly sealed.
- Carefully slide the AC unit into the installed wall sleeve.
- Secure the unit within the sleeve using the provided hardware.
- Install the interior trim kit around the unit for a finished appearance.
- Plug the unit into a grounded 115V outlet. The power cord is approximately 7 feet long.

Image: Illustration showing the Keystone AC unit installed in a wall, emphasizing easy installation into a universal wall sleeve and how it frees up window space for natural light.

Image: Diagram showing the NEMA 5-15P plug type for the Keystone AC unit, indicating it is a standard 115V/15A plug, and specifying a cable length of 7 ft. LCDI.
Instrucións de funcionamento
Your Keystone AC unit can be operated using the control panel on the unit or the included remote control.
Panel de control rematadoview:
The control panel features buttons for Power, Mode selection (Cool, Fan, Dry), Fan Speed, Temperature Up/Down, and Timer. Refer to the diagram in the full user manual for exact button locations.
Control remoto:
The remote control allows you to adjust settings from anywhere in the room. It includes a built-in thermostat that sends temperature readings to the unit every 3 minutes, ensuring precise cooling based on your location.

Image: A person sitting on a couch using the remote control for the Keystone AC unit, illustrating the convenience of the built-in remote thermostat for controlling the air conditioner from anywhere in the room.
Modos de funcionamento:
- Modo Cool: Provides cooling and dehumidification. Select desired temperature and fan speed.
- Modo de ventilador: Circulates air without cooling. Choose from 3 fan speeds (Low, Medium, High).
- Modo seco (deshumidificador): Reduce a humidade na habitación. A velocidade do ventilador contrólase automaticamente neste modo.
Características especiais:
- Modo de aforro de enerxía: O ventilador acéndese e apágase ciclicamente co compresor para aforrar enerxía.
- Modo de suspensión: Gradually increases the room temperature over several hours to save energy and provide comfortable sleeping conditions.
- Temporizador de 24 horas: Program the unit to turn on or off automatically within a 24-hour period.

Image: A person sleeping comfortably in bed, with text indicating that the sleep mode gradually increases room temperature to save energy, highlighting the energy-efficient feature of the Keystone AC unit.
Mantemento
Regular maintenance ensures optimal performance and extends the lifespan of your AC unit.
Limpeza do filtro de aire:
- The "Check Filter" alert will illuminate when it's time to clean the mesh filter.
- To clean, gently pull out the air filter from its slot (usually located behind the front grille).
- Lava o filtro con auga morna e xabón. Enxáugao ben e déixao secar completamente ao aire antes de volvelo inserir.
- Limpe o filtro polo menos unha vez cada dúas semanas ou con máis frecuencia dependendo do uso e da calidade do aire.
Limpeza xeral:
- Desenchufe sempre a unidade antes de limpala.
- Limpar o exterior do armario cun pano suave eamp pano. Non use produtos químicos agresivos ou abrasivos.
- Asegúrate de que a zona de drenaxe estea libre de obstrucións.
Resolución de problemas
Antes de contactar co servizo de atención ao cliente, consulta os seguintes problemas e solucións comúns:
| Problema | Causa posible | Solución |
|---|---|---|
| A unidade non se acende. | No power, tripped circuit breaker, or faulty plug. | Check power cord connection, reset circuit breaker, or test outlet. |
| A unidade non arrefría eficazmente. | Dirty air filter, blocked air vents, room too large, or temperature setting too high. | Clean air filter, clear obstructions, ensure room size is within specifications, lower temperature setting. |
| Auga pingando no interior. | Unit not level, or drain pan/hose blocked. | Ensure unit is level, clear any blockages in the drain system. |
| Ruído insólito. | Loose parts, fan obstruction, or normal compressor operation. | Check for loose parts, remove obstructions. Some noise from the compressor is normal. |
If the problem persists after attempting these solutions, please contact Keystone customer support.
Especificacións
| Característica | Detalle |
|---|---|
| Número de modelo | KSTAT12-1E |
| Capacidade de refrixeración | 12,000 BTU |
| Voltage | 115 voltios |
| Tamaño da habitación recomendado | Ata 550 pés cadrados. |
| Capacidade de deshumidificación | 2.3 pintas por hora |
| Dimensións do produto (PxWxH) | 20.28" x 24.21" x 14.53" |
| Peso do elemento | 73 libras |
| Nivel de ruído | 55.3 dB |
| Refrixerante | R-32 |
| Características especiais | 24 Hour Timer, Energy Saver Mode, Fast Cooling, Remote Controlled, Sleep Mode |

Image: Diagram showing the dimensions of the Keystone AC unit: 24.21 inches wide, 14.53 inches high, and 20.28 inches deep. The unit's weight is also indicated as 72.97 lbs.
Garantía e Soporte
Información da garantía:
Your Keystone KSTAT12-1E AC unit comes with a 1 ano de garantía limitadaEsta garantía cobre defectos de materiais e fabricación en condicións normais de uso. Consulte a tarxeta de garantía incluída co produto para coñecer os termos e condicións completos.
Atención ao cliente:
For technical assistance, warranty claims, or general inquiries, please contact Keystone customer support. Contact details can typically be found on the manufacturer's websitio web ou na embalaxe do produto.
You may also refer to the official Manual do usuario (PDF) para detalles adicionais.