Midea ATOM B Series Service Manual page 31

Atom B Series VRF 50/60Hz
Table 4-1.2: 60 model outdoor unit main PCB switch settings (continued)
S2=0000
S2=1000
S2=0100
S2
S2=1100
S2=0010
S2=0110
S2-4
Notes:
1. Black denotes the switch position.
30
First on priority mode (by default)
Cooling priority mode
Automatic priority mode
In response to heating mode only
In response to cooing mode only
Heating priority mode
Silent Mode (S2-4 is OFF: No silent mode. S2-4 is ON: Silent mode; default is off)