Manual Auto Operation (Indoor Unit Body Operation); Forced Cooling Operation; Compressor Preheating - Fujitsu ASU18RMLQ Service Instruction

13. MANUAL AUTO OPERATION (Indoor unit body operation)

If MANUAL AUTO Button is set, the operation is controlled as shown in Table 6.
If the remote control is lost or battery power dissipated, this function will work without the remote
control.
(Table 6)
OPERATION MODE
FAN CONT. MODE
TIMER MODE
SETTING TEMP.
SETTING LOUVER
SWING

14. 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 Table 7.
(Table 7)
OPERATION MODE
FAN CONT. MODE
TIMER MODE
SETTING TEMP.
SETTING LOUVER
SWING

15. COMPRESSOR PREHEATING

When the outdoor heat exchanger temperature is lower than Operation temperature (Refer to Table 8)
and the heating operation has been stopped for 3 hours, 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 8 : Preheating Operation / Release Temperature)
AOU24RML
AOU36RML
Manual auto operation
Auto changeover
Auto
(No timer setting available)
Continuous
75°F(24°C)
Standard
OFF
Forced cooling operation
Cooling
Hi
-
Room Temp is not controlled
Horizontal
OFF
Before 24 hour
Operation Release
temperature temperature
37.4°F 44.6°F
(3°C) (7°C)
After 24 hour
Operation Release
temperature temperature
32°F 39.2°F
(0°C) (4°C)
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