COSTWAY 18000 BTU Mini Split Air Conditioner & Heater User Manual

1. Introduction

Thank you for choosing the COSTWAY 18000 BTU Mini Split Air Conditioner & Heater. This unit is designed to provide efficient cooling, heating, dehumidification, and fan functions for spaces up to 1250 sq. ft. Featuring 21 SEER2 and 9 HSPF2 ratings, inverter technology, and quiet operation, it offers advanced climate control with energy conservation. This manual provides essential information for safe installation, operation, and maintenance of your unit. Please read it thoroughly before use and retain it for future reference.

2. Important Safety Information

To reduce the risk of fire, electric shock, or injury, always follow basic precautions, including the following:

• Professional Installation Required: Installation of this equipment must be performed only by a Licensed HVAC Installer. Improper installation can lead to electric shock, fire, water leakage, and other hazards.
• Electrical Safety: Ensure the power supply matches the unit's requirements (208-230V~60Hz/1PH). Do not operate the unit with a damaged power cord or plug.
• Clearance: Maintain adequate clearance around the indoor and outdoor units for proper airflow and maintenance.
• Maintenance: Disconnect power before cleaning or performing any maintenance. Only use recommended cleaning agents.
• Children and Pets: Keep children and pets away from the unit during operation and maintenance.
• Ventilation: Do not block air inlets or outlets.
• Refrigerant: This unit uses R32 refrigerant. Handle with care and ensure proper ventilation during service.

3. Package Contents

Verify that all items listed below are included in your package. If any parts are missing or damaged, please contact COSTWAY customer service.

• 1 x Indoor Unit
• 1 x Outdoor Unit
• 1 x 13 ft Copper Connection Pipe - Liquid Pipe
• 1 x 13 ft Copper Connection Pipe - Air Pipe
• 1 x 8 ft Power Line
• 1 x 15 ft Communication Wire
• 1 x 6.5 ft Drain Hose
• 1 x Remote Control with 2 Batteries
• 1 x Tape
• 1 x Wall Sleeve
• 1 x Putty
• 1 x User Guide

Image: All components included in the COSTWAY mini split package.

4. Product Features

• High-efficiency Cooling & Heating: 18000 BTU cooling capacity and 1.5 ton heat pump for rooms up to 1250 sq.ft. Features 21 SEER2, 9 HSPF2, ECO mode, and inverter technology for energy efficiency.
• 4-in-1 Comfort & Quiet Operation: Offers cool, heat, dry, and fan modes. Low-noise operation (≤31 dB) ensures a peaceful environment.
• Self-Cleaning & User-friendly Design: 134.6℉ high-temperature self-cleaning function for fresh air. Removable and washable filter for easy maintenance. Auto defrost function and ETL/AHRI certification for reliability.
• Smart Control Options: Handy remote control with digital display. Compatible with Alexa or Google Assistant for hands-free control.
• Enhanced Airflow: 360° air flow supply effectively avoids direct blowing for comfortable experience.
• Timer & Sleep Mode: 0-24 hour timer and quiet sleep mode for customized comfort and peaceful rest.

Image: The 4-in-1 functionality of the unit, including fan, cool, dry, and heat modes.

Image: Energy efficiency features, including SEER2 and HSPF2 ratings, and Energy Star certification.

Image: Illustration of 360° air flow supply and inverter technology for a comfortable experience.

Image: Features for a peaceful sleep, including sleep mode, 0-24H timer, low noise, and screen off.

5. Specifications

6. Installation

The installation of this mini split air conditioner and heater requires specialized knowledge and tools. It is mandatory that installation be performed only by a Licensed HVAC Installer. Attempting to install the unit yourself without proper certification and experience can void your warranty, lead to improper operation, and pose significant safety risks including electrical shock, refrigerant leaks, and property damage.

The unit comes in two separate boxes due to its size. Your installer will handle the mounting of the indoor and outdoor units, connecting the copper pipes, electrical wiring, and drain hose, and ensuring proper refrigerant charging and system testing.

Image: Dimensions of the indoor and outdoor units, illustrating the two-box shipment.

7. Operating Instructions

Your COSTWAY Mini Split unit can be controlled via the included remote control or through smart home integration (Alexa/Google Assistant). Below are basic operating instructions for the remote control.

7.1 Remote Control Functions

Image: The remote control for the mini split unit, displaying all control buttons.

• Power On/Off: Press the ON/OFF button to turn the unit on or off.
• Mode Selection: Press the MODE button to cycle through operating modes: AUTO, COOL, DRY, HEAT, and FAN.
• Temperature Adjustment: Use the SET UP and SET DOWN arrows to adjust the desired temperature. The temperature range is 60℉ to 90℉.
• Fan Speed: Press the SPEED button to select fan speeds: LOW, MID, HIGH.
• Swing Function: Use SWING↑↓ for vertical louver movement and SWING↔ for horizontal louver movement to direct airflow.
• Timer: Press the TIMER button to set a scheduled on or off time, up to 24 hours. Use the temperature adjustment arrows to set the duration.
• Sleep Mode: Activate SLEEP mode for quiet operation and optimized temperature settings during sleep.
• Display: Press the DISPLAY button to turn the unit's LED display on or off.
• iFEEL: Activates a sensor in the remote to measure the temperature at its location, providing more precise comfort.
• ECO Mode: Engages energy-saving operation.
• iCLEAN: Initiates the self-cleaning function.

7.2 Smart Control (Wi-Fi)

The COSTWAY Mini Split is Wi-Fi enabled and compatible with Alexa and Google Assistant for voice control and remote management via a smartphone app. Refer to the separate Wi-Fi setup guide for detailed instructions on connecting your unit to your home network and smart assistant.

8. Maintenance

Regular maintenance ensures optimal performance and longevity of your unit. Always disconnect power before performing any maintenance.

8.1 Filter Cleaning

The unit features a removable and washable filter. Clean the air filter every two weeks or more frequently depending on usage and air quality.

1. Open the front panel of the indoor unit.
2. Carefully remove the air filter(s).
3. Wash the filter(s) with lukewarm water and a mild detergent. Rinse thoroughly.
4. Allow the filter(s) to dry completely in a shaded area before reinserting. Do not expose to direct sunlight.
5. Reinstall the dry filter(s) and close the front panel.

8.2 Self-Cleaning Function (iCLEAN)

The iCLEAN function performs a high-temperature self-cleaning cycle on the indoor unit's evaporator coil to help prevent mold and bacteria buildup. To activate, press the iCLEAN button on the remote control. The unit will run through a cycle that includes freezing and then rapidly thawing the coil, followed by drying. This process takes approximately 20-30 minutes.

8.3 Outdoor Unit Maintenance

Periodically check the outdoor unit for any obstructions (leaves, debris) around the fan and coils. Gently clear any blockages. For thorough cleaning of the outdoor coil, it is recommended to contact a Licensed HVAC professional.

9. Troubleshooting

If you encounter issues with your unit, refer to the following common problems and solutions. For complex issues, always contact a qualified technician.

• Unit Does Not Turn On:
  • Check if the power cord is securely plugged in.
  • Verify the circuit breaker has not tripped.
  • Ensure batteries in the remote control are functional and correctly inserted.
• Insufficient Cooling/Heating:
  • Check if the air filter is clean. A dirty filter restricts airflow.
  • Ensure no obstructions are blocking the indoor or outdoor unit's air inlets/outlets.
  • Verify the temperature setting is appropriate for the desired mode.
  • Check if windows and doors are closed to prevent air leakage.
  • The room size may exceed the unit's capacity (rated for up to 1250 sq. ft).
• Unusual Noise:
  • A slight gurgling sound is normal due to refrigerant flow.
  • Check for loose parts or debris in the outdoor unit.
  • If noise is excessive or unusual, contact a professional.
• Water Leakage from Indoor Unit:
  • Ensure the drain hose is not clogged or kinked.
  • Verify the indoor unit is installed level.
  • If the problem persists, contact a professional.

10. Warranty & Support

COSTWAY stands behind the quality and design of its products. This unit is backed by an industry-leading manufacturer's warranty:

• Parts Replacement: 5 years
• Compressor Coverage: 8 years

This warranty ensures customers can rely on our products for years to come. Please retain your proof of purchase for warranty claims.

For technical assistance, warranty claims, or to purchase replacement parts, please contact COSTWAY customer service through their official website or the retailer where you purchased the product. Provide your model number (10028a-CYFP) and a detailed description of the issue to expedite service.