Fujitsu ASYA24LCC - Page 36

(4). COOLING PRESSURE OVERRISE PROTECTION
(Table 20 : Cooling Pressure Over Rise Protection Function Temperature)
When the outdoor unit heat exchange sensor temperature rises to temperature or greater, the
compressor is stopped and trouble display is performed.
ASYA24LCC
67 C
ASYA30LCC 67 C
Temperature
Indoor heat exchange
temperature
Over than 15Hz
Less than 15Hz OFF
ASYA24LCC
53 C
(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)
(Fig 11 : Heating Overload Protection Control)
[ Control System ]
Temperature
ASYA24LCC
ASYA30LCC
Temperature
Refer to below
Temp
Temp
Compressor Operation
Frequency down every 60 seconds
Over than 15Hz
Less than 15Hz OFF
Frequency down every 60 seconds
05-19
(6). COMPRESSOR TEMPERATURE PROTECTION
When the compressor temperature sensor detects higher than Temperature in the table below,
the compressor is stopped. The protection is released when the compressor temperature sensor
detects Temperature in the table below after 3 minutes of compressor stop.
(Table 22 :Operating Temperature of Compressor Protection)
Temperature
Temperature
ASYA30LCC
(7). HIGH PRESSURE PROTECTION
When the pressure switch becomes OFF (open : higher than 609.2 psi /4.2 Mpa), the compressor is
stopped. It is released when the pressure switch becomes ON (close : lower than 464.1 psi/3.2 Mpa)
after 3 minutes of compressor stop.
50 C
ASYA30LCC
53 C
50 C
120 C
80 C