This document describes the Fujitsu General Limited UTY-RNRUZ5 Wired Remote Controller, a device designed for controlling air conditioning systems.
Function Description
The UTY-RNRUZ5 is a wired remote controller for air conditioning systems, including VRF (Variable Refrigerant Flow) and other multi-split or single-split types. It serves as the primary interface for users to monitor and operate indoor units, as well as configure various system settings. The controller supports both heat recovery and heat pump systems, with specific selectable modes depending on the system configuration and operation status.
The device allows users to:
- Monitor the system status, including current operation mode, set temperature, fan speed, room temperature, and various special states like "Under Maintenance," "Forced Stop," "Mode Mismatch," "Operation Controlled," "Set Temp. Limited," "Energy Saving Operation," "Emergency Heat," "Defrost," "Oil Recovery," "Human Sensor Setting," and "Fan Control for Energy Saving."
- Control basic operations such as turning the system on/off (Occupied/Unoccupied), setting the operation mode (Cool, Dry, Heat, Custom Auto), adjusting the temperature, and controlling the fan speed (Auto, Custom).
- Configure Settings, including:
- Air Flow Direction: Adjusting vertical (VT) and horizontal (HZ) air flow, and individual VT hold for compatible cassette-type indoor units.
- Auto Off Timer: Setting a timer for the system to automatically turn off after a specified duration or within a defined time range.
- Weekly Timer: Creating up to two weekly operation schedules with up to 8 settings per day, including day-off settings. This feature is for administrators and requires a password.
- Special Settings:
- Economy Mode: Automatically offsets temperature settings to save power.
- Set Temp. Auto Return: Automatically returns the temperature to a preset value after a period of manual adjustment. This is an administrator function.
- Set Temp. Range Setting: Restricts the settable temperature range for different operation modes to suppress excessive power consumption. This is an administrator function.
- Anti Freeze: Performs low-temperature heating to prevent water lines and equipment from freezing when the air conditioning is off. This is an administrator function.
- Away Setting: Sets an unoccupied state with specific start temperatures for cooling and heating to save energy during long absences. This is an administrator function.
- Human Sensor Setting: Detects the absence of people to switch to energy-saving operation (Auto Saving) or stop indoor unit operation (Auto Off). This is an administrator function.
- Fan Control for Energy Saving: Operates the fan intermittently to save power when the set temperature is reached during cooling. This is an administrator function.
- Emergency Heat: Activates an auxiliary heater as the primary heat source, stopping the outdoor unit.
- Summer Time (Daylight Saving Time) Setting: Adjusts the time display and timer operation by one hour. This is an administrator function.
- Preference Settings: (for administrator)
- Panel Calibration: Calibrates the touch panel screen.
- Backlight Setting: Configures backlight enable/disable, brightness, and off time.
- Contrast Setting: Adjusts the screen contrast.
- Initial Settings: (for administrator)
- Language Setting: Switches the display language (English, French, German, Spanish, Polish, Russian, Italian, Portuguese, Turkish).
- Date Setting: Sets the date and time, including display format.
- Temp. Unit Setting: Switches the temperature display unit (°C or °F).
- R.C. Group Name Setting: Allows setting or changing the remote controller group name.
- R.C. Sensor Setting: Enables or disables the use of the unit's internal room temperature sensor.
- Password Setting: Sets and changes the administrator password, which is required for various advanced settings.
- Display Item Setting: Controls the visibility of the filter sign and room temperature on the display.
- Deadband Setting: Sets the deadband value (2°F to 9°F / 1°C to 4.5°C) for the Master Indoor Unit.
- Optimum Start Setting: Enables advance operation to reach the set temperature by the scheduled occupied time.
- Lead Lag Setting: For multiple indoor units in an R.C. Group, enables units to take turns stopping for backup.
Important Technical Specifications
- Model Name: UTY-RNRUZ5
- Input Voltage: DC 12 V
- Power Consumption: Max. 0.3 W
- Display: 3.8 inch FSTN LCD (255 x 160 dots) with Touch screen
- Usage Temperature Range: 32 to 104 °F (0 to 40 °C)
- Usage Humidity Range: 20 to 90% (no condensation)
- Storage Temperature Range: 14 to 140 °F (-10 to 60 °C)
- Storage Humidity Range: 20 to 90% (no condensation)
- Dimensions (H x W x D): 4-3/4 x 4-3/4 x 13/16 in (120 x 120 x 20.4 mm)
- Weight: 7.76 oz (220 g)
- Error Codes: The manual lists specific error codes for various issues, including sensor errors (CC.1), transmission PCB errors (C2.1), wired remote controller communication errors (12.1), device number excess (12.3), system start-up errors (12.4), address duplication (26.4), address setting errors (26.5), and data acquisition errors (15.4).
Usage Features
- Touch Screen Interface: The device features a touch screen for intuitive operation. It is recommended to use a fingertip or a commercially available stylus pen, avoiding excessive force or sharp objects to prevent damage.
- Operation Button: A physical operation button is used to switch the occupied state and can also be used for specific functions like child safety lock set/reset and indoor unit stop set/reset.
- Power Indicator Lamp: Lights up during indoor unit operation and blinks when an error is detected.
- Room Temperature Sensor: An internal sensor for detecting ambient room temperature, which can be enabled or disabled via settings.
- Child Lock: A safety feature that locks the unit's operation, preventing accidental changes.
- Vacation Mode: Disables the weekly schedule and maintains an unoccupied state for extended periods, with "Away Operation" activating when the room temperature reaches a set value.
- Indoor Unit Stop: Temporarily stops indoor units and disables automatic functions, useful for cleaning or when the room is not in use.
- Emergency Stop: A screen displayed when the system is emergency stopped by external operation.
- Password Protection: Many advanced settings are protected by an administrator password, ensuring controlled access.
- Display Format Setting: Allows customization of date and time display formats.
- R.C. Group Name Setting: Enables users to assign a custom name to the remote controller group for easier identification.
- Lead Lag Operation: For groups with multiple indoor units, this feature allows units to alternate operation and stopping for backup, contributing to system longevity and efficiency.
Maintenance Features
The "Maintenance" section, accessible by administrators, provides tools for system verification, operation, and setting adjustments.
- Error History: Displays a list of past errors, including date, time, address, and error code. This history can be verified and cleared.
- Setting Status List: Provides a comprehensive list of all current system settings for quick verification.
- Filter Sign Reset: Allows resetting the filter sign after the indoor unit filter has been cleaned.
- Version: Displays the software version number of the remote controller.
- Test Run: A function for testing the system.
- R.C. Address Setting: Configures the remote controller address.
- I.U. Address Verification: Verifies the indoor unit addresses.
- Function Setting: Configures various system functions.
- Display Sensor Values: Allows monitoring of sensor values from selected indoor units.
- Installer Password Change: Enables changing the installer password.
- Initialization: Resets the system to its initial factory settings.
The manual emphasizes the importance of consulting authorized service personnel for installation, complex settings, and troubleshooting, especially when dealing with password resets or specific indoor unit models that may have different deadband settings.
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