Economy Operation; Fresh Air Control; External Electrical Heater Control - Fujitsu ARU9RLF Service Instruction

17. ECONOMY OPERATION

The ECONOMY operation functions by pressing ECONOMY button on the remote controller.
At the maximum output, ECONOMY Operation is approximately 70% of normal air conditioner operation
for cooling and heating.
The ECONOMY operation is almost the same operation as below settings.
( Table 18 )
Mode
Target temperature

18. FRESH AIR CONTROL

The fan motor for Fresh Air(Field supply) is operated in synchronization with the indoor fan operation as shown in Fig. 10.
(Fig. 10 : Fresh air control)
Fan motor
(Indoor unit)
Fan motor
(for Fresh Air)

19. EXTERNAL ELECTRICAL HEATER CONTROL

The external electrical heater(Field supply) is operated as shown in Fig. 11.
(Fig.11 : External electrical heater control)
Ts -6°C(3°C)
Ts -24°C(12°C)
When the room
temperature drops
Cooling/ Dry
Setting temp.+2°F(+1°C)
Operation
Stop
Operation
Stop
When the room
temperature rises
Heater : OFF
Heater : ON
Heater : OFF
Heating
Setting temp.-2°F(-1°C)
Ts - 2°F(1°C)
Ts -20°F(10°C)
Ts : Setting temperature
When the compressor stop,
External electrical heater is OFF.
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