Compressor Preheating; Powerful Operation; Minimum Heat Operation - Fujitsu ASU7RLF1 Service Instructions Manual

14. COMPRESSOR PREHEATING

When the outdoor heat exchanger temperature is lower than Operation temperature (Refer to Table 12)
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 Release temperature or greater,
preheating is over.
( Table 12 : Preheating operation / Release temperature )
Operation temperature
32°F(0°C)
15. POWERFUL OPERATION ( For ASU*RLF1/ AGU*RLF type )
The POWERFUL OPERATION functions by pressing POWERFUL button on the remote controller.
The indoor unit & outdoor unit will operate at maximum power as shown in Table 13 .
( Table 13 : Powerful operation)
COMPRESSOR FREQUENCY
FAN CONT. MODE
SETTING LOUVER
Release Condition is as follows.
[Cooling / Dry]
-
Room temperature
[Heating]
-
Room temperature

16. MINIMUM HEAT OPERATION

MINIMUM HEAT operation performs as below when pressing MIN. HEAT button or
Weekly timer setting on the remote controller.
( Table 14 : Minimum heat operation )
Mode
Setting temperature
Fan mode
LED display
Defrost operation
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 15 : Economy operation )
Mode
Target temperature
Release temperature
35.6°F(2°C)
Maximum
Powerful
Cooling/ Dry : 3, Heating : 6 for ASU*RLF1
Cooling/ Dry : 4, Heating : 5 for AGU*RLF
<
Setting temperature -1.0°F(- 0.5°C)
=
>
Setting temperature +1.0°F(+0.5°C)
=
Heating
50°F (10°C)
Auto
Economy
Operate as normal
Cooling/ Dry
Setting temp.+2°F(+1°C)

Powerful operation

or Operation time has passed 20 minutes.
or Operation time has passed 20 minutes.
Heating
Setting temp.-2°F(-1°C)
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