Mitsubishi Electric MXZ-2A40VA Service Manual page 52

<Incorrect piping>
A
B
A
B
OUTDOOR UNIT
The auto line correcting can be confirmed in the following way:
1 Turn OFF the power supply.
2 Turn ON the 4th Dip Switch of SW1 on the display P.C. board.
3 Turn ON the power supply.
4 Confirm the interchange by the blinking of LED.
Number of blinks
LED2(Yellow)
LED1(Red)
Once
Once
3 times
3 times
5 Turn OFF the power supply after the confirmation, and turn OFF the 4th Dip Switch of SW1 on the diplay P.C. board.
6 Turn ON the power supply.
NOTE: This function does not work when the jumper wire JGO on the inverter P.C. board is cut.
INDOOR UNIT A
INDOOR UNIT B
Wiring line
not interchanged
interchanged
52
ON
AUTO LINE CORRECTING