Fujitsu AU G12LVLB Series Service Instruction page 8

AUTO CHANGEOVER operation flow chart
HEATING OPERATION
YES
Thermostat remains
in OFF state for 6 minutes or
longer?
NO
YES System stops
or operation command other than
auto changeover operation?
NO
START
Room temp.
Ts + 2 °C ?
NO
YES
Room temp.
Ts - 2 °C ?
NO
Middle zone
Operation mode
of outdoor unit : Cooling or Dry?
NO
YES
Operation mode
of outdoor unit : Heating?
NO
YES
Outdoor temperature
25°C?
NO
01-04
T
:
S
YES
YES
COOLING (AUTO:DRY)
OPERATION
Thermostat remains
in OFF state for 6 minutes or
longer?
System stops
or operation command other than
auto changeover operation?
Setting temperature
YES
NO
YES
NO