Auto Changeover Operation - Fujitsu ASU09RL2 Service Instructions Manual

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
(Fig. 3 : Operation flow chart in Auto changeover)
>Ts+2°C
NO
<Ts- 2°C
HEATING OPERATION
Thermostat remains
YES
in OFF state for 6 minutes or
YES
or operation command other than
auto changeover operation?
18°C (64°F)
START
Room temp. YES
(4°F)
?
T Setting temperature
NO
:
S
Room temp.
(4°F)
?
YES
longer?
NO
System stops
NO
and 30°C (88°F) in 1°C (2°F)
COOLING OPERATION
Thermostat remains
in OFF state for 6 minutes or
longer?
NO
System stops
or operation command other than
auto changeover operation?
NO
01-03
steps.
YES
YES