Daikin Thermostat BRC1E73 Operation Manual

The Daikin BRC1E73 is a wired remote controller (thermostat) designed for use with compatible Daikin air conditioning systems. It features a clear LCD display, intuitive button controls, multiple operation modes (Cool, Heat, Fan, Dry, Auto), temperature and fan speed settings, weekly timer programming, filter sign indicator, and various system monitoring functions. Below are key sections for safety, features, installation, setup, operation, and troubleshooting.

Features at a Glance

Key components: LCD display with backlight, Control buttons, Wired connection terminal block, Mounting plate, Battery compartment (for memory backup).

Installation

Unpack and inspect contents. Ensure compatibility with your Daikin indoor unit.

1. Choose Location: Mount on an interior wall, approximately 1.5m above the floor, away from direct sunlight, heat sources, and drafts.
2. Turn Off Power: Switch off the circuit breaker for the air conditioning system.
3. Mount Plate: Secure the mounting plate to the wall using provided screws.
4. Connect Wires: Route the communication cable from the indoor unit to the thermostat. Connect wires to the terminal block as per the wiring diagram (refer to indoor unit manual).
5. Attach Thermostat: Align the thermostat with the mounting plate and snap it into place.
6. Install Backup Battery: Insert the CR2032 battery to maintain timer settings during power outages.
7. Restore Power: Turn the circuit breaker back on.

WARNING! Installation must be performed by a qualified technician in accordance with local electrical codes. Incorrect wiring can damage the equipment.

First-Time Setup

After installation and power restoration, configure basic settings.

1. Language/Units: Press and hold the TIMER and MODE buttons for 5 seconds to enter installer settings. Set temperature units (°C/°F) and display language if applicable.
2. Clock Setting: Press the CLOCK button, then use the Temp/Timer buttons to set the current day and time.
3. Basic Operation Test: Press the ON/OFF button to start the system. Select a MODE (e.g., Cool) and set a temperature to verify operation.
4. Filter Timer Reset: If the filter sign is lit, press and hold the FILTER button for 3 seconds to reset the counter after cleaning the filter.

CAUTION! Do not force buttons. Refer to the system's main installation manual for detailed configuration options.

Specifications

• Model: BRC1E73 Wired Remote Controller.
• Power Supply: Powered via communication cable from indoor unit. Backup: CR2032 lithium battery.
• Display: LCD with backlight.
• Temperature Setting Range: Cooling: 18°C - 32°C (64°F - 90°F). Heating: 10°C - 30°C (50°F - 86°F).
• Control Functions: Mode selection, Temperature set, Fan speed, Timer, Filter sign, Powerful/Quiet mode.
• Timer: Daily or weekly programmable timer (On/Off).
• Compatibility: Designed for specific Daikin split system and multi-split system indoor units.
• Operating Environment: 0°C to 50°C (32°F to 122°F), ≤85% RH.
• Communication: 2-wire system.

Controls and Settings

Access functions via front panel buttons. The display shows active settings and status.

Button Guide:

• ON/OFF: System start/stop.
• MODE: Cycles Cool → Heat → Fan → Dry → Auto.
• TEMP ▲/▼: Adjusts set temperature.
• FAN: Cycles through fan speed options (Auto, Low, Med, High).
• TIMER: Enters timer setting mode.
• CLOCK: Sets the day and time.
• FILTER: Resets the filter cleaning reminder.
• POWERFUL/QUIET: Activates respective special operation for a set period (e.g., 20 minutes).

Menu Settings (Installer): Accessed by holding specific button combinations (see Installation manual). Includes temperature calibration, function lock, and other advanced parameters.

Connecting to the System

The thermostat communicates with the indoor unit via a dedicated 2-wire cable.

1. Ensure system power is OFF.
2. Connect the two communication wires from the indoor unit's terminal block (labeled RC1, RC2 or similar) to the thermostat's terminal block (A, B). Polarity is important.
3. Secure the connections and ensure no stray wires are present.
4. Once powered, the thermostat display should illuminate, indicating successful communication.

Tip: Use shielded cable for long runs to prevent interference. Maximum wire length and specifications are defined in the system installation manual.

Basic Operation

1. Turning On: Press ON/OFF. The indoor unit will start, and the display will show the current settings.
2. Selecting Mode: Press MODE to choose Cool, Heat, Fan, Dry, or Auto.
3. Setting Temperature: In Cool, Heat, or Auto mode, press TEMP ▲/▼ to set desired temperature.
4. Adjusting Fan Speed: Press FAN to cycle through speeds. "Auto" lets the system control speed.
5. Turning Off: Press ON/OFF again. The system will stop, and the display may show the time or room temperature.
6. Using Powerful/Quiet: Press the respective button for temporary enhanced cooling/heating or silent operation.

WARNING! Do not rapidly switch between heating and cooling modes. Allow the system several minutes to stabilize.

Advanced Functions

Weekly Timer Programming: 1. Press TIMER. 2. Use Temp buttons to select day (MON, TUE... EVERY DAY). 3. Press TIMER again to move to ON time, set with Temp buttons. 4. Press TIMER to move to OFF time, set with Temp buttons. 5. Press ON/OFF to save and exit. The timer icon will appear on the display when active.

Filter Reset: When the filter sign illuminates, clean the indoor unit's air filter. Then, press and hold the FILTER button for 3 seconds until the sign turns off.

Function Lock (Child Lock): Press and hold FAN and MODE for 5 seconds to lock/unlock all buttons (except ON/OFF on some models).

Care & Cleaning

Turn off power at the circuit breaker before cleaning.

1. Exterior: Wipe the display and casing with a soft, dry cloth. For stubborn marks, dampen the cloth slightly with water. Do not use solvents or abrasive cleaners.
2. Battery: Replace the backup battery (CR2032) every 2-3 years or if the clock/timer resets after a brief power outage.

CAUTION! Never spray liquid directly onto the thermostat. Ensure no moisture enters the housing or terminal block.

Regulatory Information

This device complies with relevant electromagnetic compatibility (EMC) and safety directives. The CE mark indicates conformity with European Union directives. Disposal must be in accordance with local regulations for electronic waste (WEEE). Daikin is a registered trademark. For technical support and warranty service, contact your local authorized Daikin dealer or visit the official Daikin website.

Troubleshooting

Reset: For minor glitches, turn off the system at the circuit breaker for 1 minute, then restore power. This will not erase timer settings if the backup battery is good.

Service: For all other issues, contact your installing Daikin dealer or authorized service provider. Do not attempt to repair the unit yourself.