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Transmission error between the controller and the indoor unit.
: The lower case is fixed to the wall with provided screws, and the upper case—which contains the PCB—is snapped into place using specific alignment tabs (typically 4–6 points). Safety First : It is strongly recommended that a qualified service person
Press the to select either Cooling or Heating.
(2 pieces for securing the backplate) 1.3 Operational & Installation Manual 1.4 2-Core Control Wire (Sheathed connection cable) Electrical Requirements Specification Control Signal Non-polar, 2-wire system Operating Voltage 16V DC (supplied from the indoor unit PCB) Recommended Cable Type Sheathed vinyl cord or cable (2-core) Wire Size AWG 18 to AWG 16 (0.75 mm² to 1.25 mm²) Maximum Run Length 500 meters (total cumulative distance) Safety & Location Planning daikin brc1c51 61 installation manual
If a malfunction code appears (such as or U8 ), double-check your P1/P2 wiring connections and verify that the indoor unit is powered on.
On the back of one controller's circuit board, locate the slide switch labeled MAIN/SUB . Leave the primary controller set to MAIN . Flip the switch on the secondary controller to SUB . 4. Field Settings and Configuration
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Use the provided screws to fix the back plate to the wall. Do not overtighten This public link is valid for 7 days
Strip approximately 6–8 mm of insulation from the ends of the wires.
Wire both controllers in parallel to the P1 and P2 terminals of the indoor unit. Alternatively, daisy-chain P1/P2 from the first controller to the second controller.
Hold down the for at least 4 seconds while the system is in normal stop mode.
Insert a flat-head screwdriver into the small recesses at the bottom of the controller to carefully pop the upper case off the back plate. Mount the Back Plate: Can’t copy the link right now
Before beginning the installation process, verify that you have all the necessary components and tools. Package Contents Remote controller unit (BRC1C51 or BRC1C51-61) Installation manual Wood screws (2x) for wall mounting Machine screws (2x) for switch box mounting Required Tools and Materials Phillips screwdriver Flathead screwdriver (small) Wire strippers
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Determine the wiring entry point (top center, rear, or side).