1. Overview
The UTY-RVNYN backlit wired remote controller provides user-friendly operation for Fujitsu VRF and split-type systems. It features a clear LCD display with backlight illumination for enhanced visibility, allowing precise control of temperature, mode, fan speed, and other functions.
2. Controller Layout
Display and Buttons Overview:
LCD Display: Shows operating status, mode, and temperature settings.
Power Button (ON/OFF): Turns the system on or off.
Mode Button: Cycles through operation modes (Auto, Cool, Dry, Fan, Heat).
Fan Speed Button: Selects fan operation between Auto, High, Medium, Low, and Quiet.
Temperature Adjustment Buttons (▲/▼): Set the desired room temperature.
Timer Button: Programs daily ON/OFF operations.
Menu Button: Provides access to function settings, service mode, and advanced configuration options.
Backlight: Automatically activates during operation and fades out after a short period of inactivity.
3. Operation Modes
| Mode | Description |
|---|---|
| AUTO | Automatically selects cooling or heating based on room temperature. |
| COOL | Provides cooling operation to lower room temperature. |
| HEAT | Provides heating operation to raise room temperature. |
| DRY | Reduces humidity while maintaining a stable temperature. |
| FAN | Circulates air without temperature adjustment. |
Note: Available modes depend on the connected indoor unit type.
4. Temperature Control
Temperature can typically be set between 18°C and 30°C (range may vary by model).
The actual compressor operation range is governed by indoor unit logic, not the controller setting alone.
5. Fan Speed and Airflow
Fan Speeds: Auto / High / Medium / Low / Quiet.
Airflow Direction: Adjustable on compatible models through the Swing or Louver buttons.
Auto Fan Mode: Optimizes airflow based on room temperature difference and operation mode.
6. Timer Functions
The controller includes:
ON Timer: Starts operation at a preset time.
OFF Timer: Stops operation at a preset time.
Weekly Timer: Up to 8 programs per week, customizable for each day or group of days.
Factory Default: Weekly timer is disabled until configured.
7. Special Functions
Operation Mode Exemption: Hides selected operation modes from the user (e.g., disabling “Dry” or “Fan” mode).
Temperature Range Limitation: Restricts the adjustable range for user operation.
Room Temperature Correction: Adjusts displayed temperature ±2°C to match actual conditions.
Key Lock: Prevents unintended changes to settings.
Filter Sign Display: Notifies users when filters require cleaning.
Error Display: Shows system fault codes for maintenance personnel.
8. Backlight Operation
The LCD backlight activates automatically when any button is pressed.
It remains illuminated for a few seconds after the last operation before turning off.
Ideal for low-light environments such as mechanical rooms or offices.
9. Maintenance
Periodically clean the controller surface with a soft, dry cloth.
Avoid using solvents, alcohol, or water.
If display or button malfunction occurs, consult technical service support.
10. Technical Specifications
| Item | Specification |
|---|---|
| Power Supply | 12 VDC (from indoor unit) |
| Wiring Type | Polar 3-core cable |
| Cable Size | 0.33 mm² (22 AWG) |
| Display | LCD with backlight |
| Compatible Models | VRF, Multi, and Split systems (refer to D&T manual) |