START
Ts+4°F(+2°C)?
COOLING (AUTO:DRY)
OPERATION
HEATING OPERATION
YES
YES
NO
NO
NO
AUTO CHANGEOVER operation flow chart
Ts : Setting temperature
Room temp.
Ts -4°F(-2°C)?
NO
Thermostat remains
in OFF state for 6 minutes or
longer?
Thermostat remains
in OFF state for 6 minutes or
longer?
System stops
or operation command other than
auto changeover operation?
System stops
or operation command other than
auto changeover operation?
Middle zone
NO
Operation mode
of outdoor unit : Cooling or Dry?
YES
NO
Operation mode
of outdoor unit : Heating?
YES
NO
YES
Outdoor temp.
NO
YES
YES
NO
YES
YES
77°F(25°C)?
Room temp.
01-02