General Assist Product Reference
VR-II Wired Remote Controller
Touch wall controller features, installation and service overview
Reference for the UTY-RNR series wired remote controller used with compatible AIRSTAGE systems
The touch wall controller combines an intuitive wide-screen interface with energy-saving controls, simplified non-polar wiring and built-in service information. It was developed to improve the experience for building occupants, installers and service personnel.
Compatibility note: Available functions may vary by indoor unit, system generation and controller configuration. Always confirm compatibility in the applicable design, installation and service documentation.
1. Product overview
The controller was developed around three stakeholder groups:
| User | Installer | Service personnel |
|---|---|---|
| Easy operation Energy-saving functions Convenient controls Modern appearance | Simplified installation Fewer wiring limitations Lower installation effort Regulatory support | Easy maintenance Clear error recognition Stored fault history Live operating data |
Core characteristics
Wide touch-panel LCD, intuitive menu navigation, LED backlight, energy-management functions, non-polar two-wire communication and integrated maintenance information.
Wide touch-panel LCD, intuitive menu navigation, LED backlight, energy-management functions, non-polar two-wire communication and integrated maintenance information.
2. Energy-saving control
| Function | Operation | Typical use |
|---|---|---|
| Auto-Off Timer | Turns the indoor unit off after a selectable period of 30 to 240 minutes. | Meeting rooms, changing rooms and after-hours office use. |
| Set Temperature Auto Return | Returns the set temperature to a nominated value after 10 to 120 minutes. | Prevents prolonged operation at excessive heating or cooling settings. |
| Upper and Lower Temperature Limits | Restricts the available temperature range separately for cooling, heating and auto modes. | Offices, restaurants, schools and controlled public areas. |
| Weekly Timer | Provides two schedules with up to eight setting changes per day, including time, On/Off, temperature and mode. | Offices, schools, retail and hospitality facilities. |
3. Convenience functions
| Anti-Cool / Anti-Heat | Automatically starts cooling or heating when room temperature crosses a selected limit, even when the indoor unit is otherwise off. Suitable for hotels, holiday homes and intermittently occupied spaces. |
| Summer Time Display | Adjusts controller time and linked schedules for daylight-saving changes without individually changing each schedule. |
| Child Lock | Prevents unintended operation in schools and public facilities. The presentation identifies activation by pressing the On/Off button and screen for approximately four seconds. |
| Room Temperature Display | Displays temperature measured by the controller's internal room sensor. |
| Status and Limitation Display | Shows restrictions applied by central or external controls, such as prohibited On/Off operation or mode changes. |
| Multi-Language Display | Supports seven display languages for international and multi-user installations. |
Temperature-sensor placement: Do not install the controller where it is exposed to direct sunlight, draughts or direct warm or cool discharge air, as this may affect displayed room temperature and control accuracy.
4. Operational control
Password protection
Selected menus and settings can be password protected to prevent unauthorised changes. This is particularly useful for public facilities, server rooms and sites where energy-saving schedules must remain standardised.
Indoor unit name registration
Connected indoor units can be given meaningful names such as Meeting Room 1, Lobby or Window Zone. This improves identification during operation, commissioning and service.
5. Simplified installation
| Feature | Benefit |
|---|---|
| Non-polar two-wire connection | Reduces polarity errors and supports cable sizes from AWG16 to AWG22, approximately 1.3 to 0.3 mm². |
| Rear or top cable entry | Allows flexible surface or concealed wiring arrangements. Fit the wiring cover where required to protect controller wiring. |
| Automatic address setting | Reduces commissioning time and avoids errors associated with manual rotary-switch addressing. |
| Position confirmation | Helps identify connected indoor units using temporary louvre movement or other confirmation behaviour. |
6. Maintenance and service functions
Error history
The controller can retain up to 32 error events from connected indoor units or the remote controller. Power-failure retention must be configured correctly using the controller's internal DIP switch settings.
Live indoor unit data
| Item | Reference |
|---|---|
| Inlet air temperature | TH21 |
| Indoor heat-exchanger inlet temperature | TH22 |
| Indoor heat-exchanger outlet temperature | TH23 |
| Electronic expansion valve opening | EEV21 pulse position |
Indoor unit model display
When an error occurs, the controller can display the model name of the connected indoor unit. This supports faster identification, fault investigation and parts selection.
7. Technical summary
| Controller family | UTY-RNR series touch wired remote controller |
| Interface | Wide monochrome touch LCD with backlight and one physical On/Off button |
| Communication | Dedicated non-polar two-wire connection |
| Cable range | AWG16 to AWG22, approximately 1.3 to 0.3 mm² |
| Service history | Up to 32 stored error incidents |
Key benefit: The controller combines local comfort control, energy-management rules, simplified commissioning and useful service data in one wall-mounted interface.
This article is based on Fujitsu General product training material. Confirm current product compatibility, menu availability and installation requirements using the applicable model documentation.