Fujitsu AS*9LSACW Service Instructions Manual page 38

(3). ANTIFREEZING CONTROL (Cooling and Dry mode)
The compressor frequency is decrease on cooling & dry mode when the indoor heat exchanger
temperature sensor detects the temperature lower than Temperature .
Then, the anti-freezing control is released when it becomes higher than Temperature .
(Table 19 : Anti-freezing Protection Operation / Release Temperature)
AS*9LSACW
AS*12LSACW
AS*9LSBCW
AS*12LSBCW
AS*14LSBCW
AS*18LSBCW
(4). COOLING PRESSURE OVERRISE PROTECTION
When the outdoor unit heat exchange sensor temperature rises to temperature
compressor is stopped and trouble display is performed.
(Table 20 : Cooling Pressure Over Rise Protection Function Temperature)
AS*9LSACW
AS*12LSACW
AS*9LSBCW
AS*12LSBCW
AS*14LSBCW
AS*18LSBCW
(5). HIGH TEMPERATURE RELEASE CONTROL ( HEATING MODE )
On heating mode, the compressor frequency is controlled as following based on the
detection value of the indoor heat exchanger temperature sensor.
(The control system is different depending on the product model)
AS*9LSACW
AS*12LSACW
AS*9LSBCW
AS*12LSBCW
AS*14LSBCW
AS*18LSBCW
(Fig 11 : Heating Overload Protection Control)
[ Control System
Indoor heat exchange
temperature
Temperature
The frequency increase every
60 seconds gradually.
It returns to the normal operation
after 5 minutes.
Compressor Operation
[ AS*9/12LSBCW ]
52Hz or greater
26 51Hz
18 25Hz
Temperature Temperature
4 C 7 C
4 C
7 C
4 C 7 C
4 C 7 C
4 C 7 C
4 C 7 C
Temperature
65 C
65 C
67 C
67 C
65 C
65 C
Control system
]
Refer to below
51Hz
Frequency down evry 60 seconds
OFF
Temperature
AS*9LSACW
AS*12LSACW
05-18
or greater, the
Fan Hi Other than Hi
Temp Temp Temp Temp
52 C 48 C 54 C 50 C
52 C 48 C 54 C 50 C