Daikin Brc1c51 61 Installation Manual -

  • Grounding:
  • Multiple controllers:
  • Sensor wiring:
  • Check for and resolve any error codes; refer to Daikin fault code list for diagnostics.
  • Clearance:
  • Wiring entry:

    • This is the most overlooked part of the Daikin BRC1C51 61 installation manual. On the back of the circuit board (or inside the wall plate cover), there is a bank of DIP switches (usually 4 or 6 switches).

    Standard Default Settings (for single indoor unit):

    For BRC1C61 specifically:

    Tip: If the room temperature reading seems wrong, flip SW3 to ON if you have an external sensor wired to the indoor unit.

    Turn off the indoor unit breaker. Seriously. 12V DC is safe, but shorting the communication bus can blow the indoor unit's fuse. daikin brc1c51 61 installation manual

    Terminal Block on the Wall Plate (labeled P1, P2):

    Wiring rule: Polarity does not matter. Daikin uses non-polarized transmission. However, use a twisted pair or shielded cable to prevent electrical noise. Grounding:

    Connecting to the Indoor Unit: Open the indoor unit’s electrical box. Locate terminals P1 and P2 (often also labeled for remote controller). Connect the other end of the same 2-core cable to P1 and P2 on the indoor unit's terminal strip.

    Max cable length: 500 meters (1,640 feet) using 0.75mm² wire. Keep away from 220V power cables. Multiple controllers:

    Once powered, the controller will usually auto-detect the indoor unit, but you may need to configure settings:

  • Thermistor Sensor Selection: