Fujitsu ASYA07LGC Service Instruction page 33

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)
Outdoor temperature
Over than 10°C
or 12°C
Less than 10°C
or 12°C
4. COOLING PRESSURE OVERRISE PROTECTION
When the outdoor unit heat exchange sensor temperature rises to 67°C or greater,
the compressor is stopped and trouble display is performed.
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.
[ Control System ]
Indoor heat exchange
temperature
55°C
The compressor frequency is
decreased 3Hz every 60seconds.
53°C
It returns to the normal operation
Temperature
*1
*2
4°C
*1
*2
*1. When the temperature rises.
*2. When the temperature drops.
Refer to below
Compressor Operation
[ AS*A07/ 09LGC ]
52Hz or greater 49Hz
43 49Hz Frequency down every 120 sec
34 40Hz 28Hz
22 28Hz OFF
[ AS*A12LGC ]
48Hz or greater 45Hz
Frequency down every 120 sec
39 45Hz
27 36Hz 18Hz
25Hz OFF
[ AS*A14LGC ]
42Hz or greater 38Hz
Frequency down every 120 sec
30 38Hz
21 27Hz 20Hz
18 20Hz OFF
Temperature
7°C
13°C
52°C
50°C
05-18