Loosen the backplate mounting screws. The backplate was likely deformed due to excessive tightening.
: Route the wire through the entry hole and secure the lower case to the wall using the provided screws. Do not overtighten to avoid deforming the case.
Once the unit is powered on for the first time, you may need to configure specific field settings depending on the layout. Setting Main/Sub Controllers
: This indicates a transmission error between the remote controller and the indoor unit. Check for loose terminals or incorrect wiring runs.
Tip: If the room temperature reading seems wrong, flip SW3 to ON if you have an external sensor wired to the indoor unit.
Pass the 2-core wire through the center hole of the lower case.
Gently twist the screwdriver to unlatch the front assembly from the rear installation plate.
Areas with direct sunlight, near heat sources, or behind doors/curtains.
: Avoid moist areas where exposure to water is possible. 🛠️ 2. Mounting the Controller
Investing time in proper installation and maintenance will ensure your Daikin BRC1C51 61 thermostat operates efficiently, effectively, and safely. If you're still unsure or have specific questions, consult a professional HVAC technician for assistance.
: Mount at a height where the room's average temperature can be detected. Avoid Sunlight : Do not install in direct sunlight.
Communication error between the Main and Sub remote controllers. Ensure that one controller is explicitly set to Sub.
Note: This paper provides a comprehensive installation overview but is not a substitute for the official Daikin installation manual and product-specific wiring diagrams. Obtain and follow the exact Daikin BRC1C51 / BRC1C61 official manual and wiring diagrams for precise terminal names, voltages, DIP switch maps, and firmware-specific instructions.
Ensure no wires are pinched between the front and rear casings. 4. Initial Startup & System Testing