1. Introduction
This manual provides essential information for the safe and efficient operation, installation, and maintenance of your COSTWAY 20K Dual 2 Zone Mini Split AC/Heating System. Please read it thoroughly before use and retain it for future reference.
The system offers multi-zone comfort, allowing independent temperature control for up to two areas. It features a 23 SEER2 rating for energy efficiency, inverter technology, and R32 refrigerant. Designed for extreme weather, the outdoor unit includes chassis electrical heating for reliable operation in temperatures from -4°F to 127°F. Smart control options include WiFi connectivity, compatibility with Alexa and Google Assistant, and a remote control. The system operates with low noise levels, as low as 28 dB, and includes a self-clean function for easy maintenance.
Figure 1: Multi-Zone Comfort System Overview
This image illustrates the multi-zone comfort capability, showing how two indoor units can independently cool or heat different areas of a home from a single outdoor unit.
Figure 2: Energy Efficiency Features
This image highlights the system's energy-saving features, including the use of R32 refrigerant, inverter technology, a 23 SEER2 rating, and 9.5 HSPF2 for efficient heating and cooling.
Figure 3: Extreme Weather Operation
This image demonstrates the system's capability to operate reliably in extreme temperatures, providing cooling at 127°F and heating at -4°F, supported by chassis electrical heating.
2. Safety Information
Important: Installation and servicing must be performed by a qualified, licensed HVAC technician. Improper installation can result in electric shock, fire, or water leakage.
- Always disconnect power before performing any maintenance or service.
- Ensure proper grounding to prevent electrical shock.
- Do not block air inlets or outlets of the indoor or outdoor units.
- Keep children and pets away from the outdoor unit during operation.
- Refer to local codes and regulations for installation requirements.
3. Setup and Installation
The COSTWAY 20K Dual 2 Zone Mini Split AC/Heating System requires professional installation. The package includes all necessary components for installation, such as the outdoor unit, two indoor units, communication wires, copper connection pipes, drain hoses, remote controls, wall sleeves, wall caps, putty, and tape.
Figure 4: Package Contents
This image displays all items included in the package, such as the outdoor unit, two indoor units, remote controls, copper pipes, communication wires, drain hoses, mounting pads, screw kit, putty, tape, wall caps, and wall sleeves.
3.1. Installation Overview
Installation involves mounting the indoor and outdoor units, connecting refrigerant lines, electrical wiring, and drain hoses. Proper vacuuming of the refrigerant lines is crucial before releasing refrigerant.
Video 1: Mini Split AC Installation Guide
This video provides a detailed guide on the installation process for a mini split AC system, covering steps from mounting units to connecting lines. (Source: Happy Tao)
3.2. Electrical Wiring
Ensure all electrical connections are secure and comply with local electrical codes. The system operates on 208/230V. Correctly connect the grounding wire and corresponding numbered wires between the indoor and outdoor units.
Video 2: Electrical Wiring for DELLA Unit
This video demonstrates the correct procedure for wiring a mini split unit, focusing on grounding and connecting correlating wire numbers. (Source: Align Inc.)
4. Operating Instructions
Your COSTWAY mini split system offers multiple operating modes and smart control options for optimal comfort.
4.1. Remote Control Functions
The included remote control allows you to adjust settings such as mode, fan speed, temperature, and timer. The system features 7 modes (Auto, Cool, Heat, Dry, Fan, ECO, Sleep) and 8 fan speeds (Auto, Mute, Low, Low-mid, Mid, Mid-high, High, Turbo).
Figure 5: Remote Control and Modes
This image displays the remote control and lists the available 8 fan speeds and 7 operating modes, including Auto, Cool, Heat, Dry, Fan, ECO, and Sleep.
4.2. Smart Control (WiFi, Alexa, Google Assistant)
The system is WiFi-enabled and compatible with Amazon Alexa and Google Assistant, allowing for voice control and remote management via a smartphone app. This enables you to adjust settings from anywhere.
Figure 6: Smart Control Interface
This image shows the smart control capabilities of the system, illustrating app control and compatibility with Amazon Alexa and Google Home for convenient management.
Video 3: Wi-Fi Pairing Guide
This video demonstrates the steps to correctly pair your mini split unit with Wi-Fi for smart control functionality. (Source: Align Inc.)
4.3. Special Features
- 4D Swing: Distributes air more evenly throughout the room.
- ECO Mode: Optimizes energy consumption for efficient operation.
- Sleep Mode: Adjusts temperature and fan speed for comfortable sleep while reducing energy use.
- Low Noise Operation: Operates as quietly as 28 dB for a peaceful environment.
- 24-hour Timer: Schedule the unit to turn on or off automatically.
- Child Lock: Prevents unintended changes to settings.
Figure 7: Quiet Operation and Comfort Features
This image illustrates the quiet operation of the indoor unit, highlighting features like Sleep Mode, 24-hour Timer, and a low noise level of 28 dB for undisturbed comfort.
5. Maintenance
Regular maintenance ensures optimal performance and longevity of your mini split system.
- Filter Cleaning: The indoor units feature washable filters. Clean them regularly (e.g., every 2-4 weeks, depending on usage) to maintain air quality and efficiency. Refer to the detailed user guide for instructions on how to remove and clean the filters.
- Self-Clean Function: The system includes a self-clean function to prevent dust and mold buildup inside the indoor unit. Activate this function periodically as per the remote control or app instructions.
- Outdoor Unit Cleaning: Keep the outdoor unit free from obstructions, leaves, and debris. Periodically clean the coils with a soft brush or water hose (ensure power is disconnected).
- Professional Inspection: Annual professional inspection and servicing by a licensed HVAC technician are recommended to check refrigerant levels, electrical connections, and overall system health.
6. Troubleshooting
Before contacting support, review these common issues and solutions.
| Problem | Possible Cause | Solution |
|---|---|---|
| Unit does not turn on | No power, circuit breaker tripped, remote control batteries low. | Check power supply, reset circuit breaker, replace remote batteries. |
| Insufficient cooling/heating | Dirty air filters, blocked outdoor unit, incorrect mode/temperature setting, low refrigerant. | Clean air filters, clear obstructions from outdoor unit, verify settings, contact technician for refrigerant check. |
| Unusual noise | Loose parts, fan obstruction, normal operating sounds (e.g., refrigerant flow). | Check for loose parts, remove obstructions, if noise persists or is abnormal, contact support. |
| Water leakage from indoor unit | Clogged drain hose, improper installation. | Check and clear drain hose, contact technician for inspection. |
| WiFi connection issues | Incorrect network password, router issues, unit too far from router. | Verify WiFi password, restart router, ensure unit is within WiFi range, re-attempt pairing. |
7. Specifications
Detailed technical specifications for your COSTWAY 20K Dual 2 Zone Mini Split AC/Heating System.
- Brand: COSTWAY
- Model Name: 20K
- Cooling Power: 12000 British Thermal Units (per indoor unit)
- Seasonal Energy Efficiency Ratio (SEER2): 23
- Noise Level: 28 Decibels (indoor unit)
- Power Source: Corded Electric, 208/230V
- Form Factor: Split System
- Compressor Type: Rotary Scroll, Inverter
- Refrigerant: R32
- Operating Temperature Range: Cooling up to 127°F, Heating down to -4°F
- Control Method: Push Button, Remote, Voice (Alexa, Google Assistant), App Control
- Included Components: Outdoor Unit, 2 x Indoor Unit, 2 x Communication Wire, 2 x Copper Connection Pipe - Liquid Pipe, 2 x Copper Connection Pipe - Gas Pipe, 2 x Drain Hose, 2 x Remote Control, 2 x Wall Sleeve, 2 x Wall Cap, 2 x Putty, 2 x Tape, 2 x User Guide
Figure 8: Unit Dimensions
This image provides detailed dimensions for both indoor and outdoor units across different BTU capacities, aiding in installation planning.
8. Warranty and Support
COSTWAY offers a limited warranty for this product. Please refer to the warranty card included in your package for specific terms and conditions.
- Compressor Warranty: 5 years
- Parts Warranty: 5 years
- Technical Support: Lifetime technical support is available.
- Customer Service: 24/7 support via phone, email, or live chat.
For warranty claims, technical assistance, or any questions regarding your product, please contact COSTWAY customer service using the information provided in your user guide or on the official COSTWAY website.
Figure 9: Extended Service and Support
This image highlights the extended service options, including 5-year compressor and parts warranty, lifetime technical support, and 24/7 customer service.
