Manual Auto Operation (Indoor Unit Body Operation); Forced Cooling Operation; Compressor Preheating; Minimum Heat Operation - Fujitsu ASU 9RLF Service Instructions Manual

15. MANUAL AUTO OPERATION (Indoor unit body operation)

If MANUAL AUTO Button is set, the operation is controlled as shown in Table13.
If the remote control is lost or battery power dissipated, this function will work without the remote control.
(Table13)
OPERATION MODE
FAN CONT. MODE
TIMER MODE
SETTING TEMP.
SETTING LOUVER
SWING
ECONOMY

16. FORCED COOLING OPERATION

Forced cooling operation is started when pressing MANUAL AUTO button for 10 seconds or more.
During the forced cooling operation, it operates regardless of room temperature sensor.
Operation LED and timer LED blink during the forced cooling operation. They blink for 1 second ON
and 1 second OFF on both operation LED and timer LED (same as test operation).
Forced cooling operation is released after 60 minutes of starting operation.
The FORCED COOLING OPERATION will start as shown in Table13.

17. COMPRESSOR PREHEATING

When the outdoor temperature is lower than 68°F(20°C) and the heating operation has been
stopped for 30 minutes, power is applied to the compressor and the compressor is heated.
(By heating the compressor, warm air is quickly discharged when operation is started.)
When operation was started and when the outdoor temperature rises to 77°F(25°C) or greater,
preheating is ended.

18. MINIMUM HEAT OPERATION

The MINIMUM HEAT operation functions by pressing MIN.HEAT button on the remote controller.
The MINIMUM HEAT operation is almost the same operation as below settings.
( Table14 )
Mode
Setting temperature
Fan mode

19. ECONOMY OPERATION

The ECONOMY operation functions by pressing ECONOMY button on the remote controller.
The ECONOMY operation is almost the same operation as below settings.
( Table15 )
Mode
Target temperature
Manual auto operation
Auto changeover
Auto
(No timer setting available)
Continuous
75.2°F (24°C)
Standard
OFF
OFF
Heating
50°F (10°C)
AUTO
Cooling/ Dry
Setting temp.+2°F Setting temp.-2°F
(+1°C)
01-12
Forced cooling operation
Cooling
Hi
-
Room Temp is not controlled
Horizontal
OFF
-
Heating
(-1°C)