Auto Changeover Operation; Operation Flow Chart - Fujitsu ASTG18KMTC Service Instruction

Split type room air conditioner wall mounted type inverter
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4. AUTO CHANGEOVER OPERATION

When the air conditioner is set to the AUTO mode by remote control, operation starts in the optimum
mode from among the HEATING, COOLING, DRY and MONITORING modes. During operation, the
optimum mode is automatically switched in accordance with temperature changes. The temperature
can be set between 18°C and 30°C in 1°C steps.

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
YES
Outdoor temperature
25 °C?
01-03
YES
>
<
NO
COOLING (AUTO:DRY)
<
in OFF state for 6 minutes or
or operation command other than
T
Setting temperature
:
S
OPERATION
YES
Thermostat remains
longer?
NO
YES
System stops
auto changeover operation?
NO

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