Fujitsu ASG30LMTA Service Instruction page 7

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
Operation mode of outdoor unit
NO
YES
NO
START
Monitor mode
Room temp.
Ts+2 °C ?
NO
Room temp.
Ts -2 °C ?
NO
Middle zone
YES
Auto change over is
second or more?
NO
YES
Operation mode of
outdoor unit : Cooling?
NO
: Heating?
NO
Outdoor temperature<
25 °C?
NO
01-04
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T Setting temperature
:
S
YES
Operation mode
before the monitor mode is
cooling mode?
NO
YES
COOLING 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