Fujitsu AUG12LVLB Service Instruction page 9

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