Introduction
This manual provides essential information for the safe and efficient operation of your Daikin ATMOSPHERA 18K BTU Heat Pump Hi-Wall Fan Coil System. This system comprises an RXM18WVJU9 outdoor unit and an FTXM18WVJU9 indoor unit. Please read this manual thoroughly before installation, operation, or maintenance to ensure proper use and to prevent damage or injury.
Figure 1: Daikin ATMOSPHERA 18K BTU Heat Pump Hi-Wall Fan Coil System. The image displays the white, rectangular indoor unit positioned above the larger, off-white outdoor unit with a prominent fan grille.
Safety Precautions
- Installation must be performed by qualified personnel in accordance with local and national electrical codes.
- Ensure the power supply matches the unit's specifications (208/230 V).
- Do not insert fingers or objects into the air inlet/outlet.
- Do not attempt to repair or modify the unit yourself. Contact qualified service personnel.
- Ensure proper grounding to prevent electric shock.
- The system uses R-32 refrigerant. Handle with care and ensure proper ventilation during service.
Setup and Installation
Unpacking
Carefully unpack all components. Verify that all parts are present and undamaged. Refer to the packing list provided with your system.
Location Requirements
- Indoor Unit (FTXM18WVJU9): Mount on a wall with sufficient structural support, away from direct sunlight or heat sources. Ensure adequate clearance for air circulation.
- Outdoor Unit (RXM18WVJU9): Install on a level, stable surface outdoors, away from obstructions that could impede airflow. Ensure proper drainage and accessibility for maintenance.
Electrical Connections
Connect the units to a dedicated 208/230 V power supply circuit. All wiring must comply with local electrical codes and the wiring diagram provided in the full installation manual. A qualified electrician must perform electrical connections.
Refrigerant Piping
Connect the refrigerant lines between the indoor and outdoor units. Ensure proper vacuuming and charging with R-32 refrigerant. This procedure requires specialized tools and expertise and must be performed by a certified HVAC technician.
Operating Instructions
Remote Control Overview
The system is operated via a wireless remote control. Familiarize yourself with the buttons and display on the remote control.
Basic Operation Modes
- Cooling Mode: Press the MODE button until the snowflake icon appears. Adjust the temperature using the UP/DOWN arrows.
- Heating Mode: Press the MODE button until the sun icon appears. Adjust the temperature using the UP/DOWN arrows.
- Fan Mode: Press the MODE button until the fan icon appears. This circulates air without heating or cooling.
- Dry Mode: Press the MODE button until the water drop icon appears. This mode helps reduce humidity.
- Auto Mode: The system automatically selects cooling or heating based on the set temperature and ambient conditions.
Adjusting Fan Speed and Airflow Direction
- Use the FAN button to cycle through fan speed settings (Low, Medium, High, Auto).
- Use the SWING button to adjust the vertical airflow direction or enable continuous swing.
Timer Functions
The remote control allows you to set ON/OFF timers for scheduled operation. Refer to the remote control manual for detailed instructions on setting timers.
Maintenance
Regular maintenance ensures optimal performance and longevity of your Daikin system. Always turn off the power supply to the unit before performing any maintenance.
Air Filter Cleaning (Indoor Unit)
- Open the front panel of the indoor unit.
- Remove the air filters.
- Clean the filters using a vacuum cleaner or wash them with lukewarm water. Allow them to dry completely before reinstallation.
- Reinstall the filters and close the front panel.
Frequency: Clean filters every two weeks or more frequently depending on usage and air quality.
Outdoor Unit Cleaning
Periodically remove leaves, dust, and other debris from around the outdoor unit. Ensure the condenser coils are clean and free of obstructions. Do not use high-pressure water directly on electrical components.
Professional Inspection
It is recommended to have a qualified HVAC technician perform a comprehensive inspection and service at least once a year. This includes checking refrigerant levels, electrical connections, and overall system performance.
Troubleshooting
Before contacting service, review the following common issues and solutions.
| Problem | Possible Cause | Solution |
|---|---|---|
| Unit does not operate | No power supply; Remote control batteries low; Timer function active | Check circuit breaker; Replace remote batteries; Cancel timer setting |
| Insufficient cooling/heating | Dirty air filters; Blocked outdoor unit; Incorrect temperature setting; Doors/windows open | Clean air filters; Clear obstructions from outdoor unit; Adjust temperature; Close doors/windows |
| Unusual noise | Loose parts; Obstruction in fan; Unit not level | Contact service technician; Check for debris; Ensure unit is level |
| Water leakage (indoor unit) | Clogged drain pipe; Unit not level | Contact service technician to clear drain; Ensure unit is level |
If the problem persists after attempting these solutions, please contact Daikin customer support or a certified service technician.
Specifications
Key technical specifications for the Daikin ATMOSPHERA 18K BTU Heat Pump Hi-Wall Fan Coil System.
| Feature | Specification |
|---|---|
| Model Numbers | Outdoor: RXM18WVJU9, Indoor: FTXM18WVJU9 |
| Capacity | 1.5 Tons (18,000 BTU/h nominal) |
| Cooling Capacity Range | 9,000 - 22,000 BTU/h |
| Heating Capacity Range | 9,000 - 30,200 BTU/h |
| Power Supply | 208/230 V |
| Refrigerant Type | R-32 |
| Outdoor Unit Dimensions (H x W) | 28.9375 x 34.25 inches |
| Outdoor Unit Weight | 132 lbs |
| Indoor Unit Dimensions (H x W x D) | 11.75 x 43.3125 x 10.8125 inches |
| Indoor Unit Weight | 33 lbs |
| Noise Level (Indoor) | 20 dB (minimum) |
| Special Features | Dust Filter, Fast Cooling, Heating & Cooling Function, Inverter Compressor, Remote Controlled |
Warranty and Support
For warranty information, please refer to the warranty card included with your product or visit the official Daikin website. For technical support, service requests, or to locate an authorized Daikin service provider, please contact Daikin customer service.
Daikin Customer Support: Visit Daikin's official contact page
