[4-2 Circuit Board Components ]
4-2-7
Indoor Unit External Input/Output Circuit Board
TB23 (Input with voltage)
ON/OFF
BS_04_C
CN53
Indoor control board (No.1)
To CN51
TB21 (Input no voltage)
ON/OFF
CN54
Indoor control board (No.2)
To CN51
TB22 (Relay contact output)
No.1 operation status
No.1 error status
No.2 operation status
No.2 error status
11
chapter 4 -