Fujitsu AS* A09LEC Service Instruction page 23

3. ANTIFREEZING CONTROL (Cooling and Dry mode)
The compressor speed is decreased on cooling & dry mode when the indoor heat exchanger
temperature sensor detects the temperature lower than
Then, the anti-freezing control is released when it becomes higher than Release temperature A.
(Table 22 : Anti-freezing protection operation / Release temperature)
Outdoor temperature zone
A, B , C, D
4. COOLING PRESSURE OVERRISE PROTECTION
When the outdoor unit heat exchange sensor temperature rises to
the compressor is stopped.
Then the compressor will be restarted after 3 minutes ST.
5. HIGH TEMPERATURE RELEASE CONTROL ( HEATING MODE )
In heating mode, the compressor speed is controlled based on the detection value
of the indoor heat exchanger temperature sensor.
5-1. HIGH TEMPERATURE RELEASE CONTROL of Outdoor Unit
[ Control System ]
Indoor heat exchange
temperature rises
The compressor speed is
decreased 3rps every 60seconds.
53°C
It returns to the normal operation
5-2. HIGH TEMPERATURE RELEASE CONTROL of Indoor Unit
[ Control System ]
Indoor heat exchange
temperature rises
55°C
It returns to the normal operation
[ ASYA09LEC ]
Compressor operation
57rps or more
35 ~ 55rps
28 ~ 33rps
18 ~ 23rps
[ ASYA12LEC ]
Compressor operation
48rps or more
39 ~ 45rps
27 ~ 36rps
18 ~ 25rps
Release temperature A
E, F
Refer to below
55rps
Rotational speed down every 120 sec
23rps
OFF
45rps
Rotational speed down every 120 sec
25rps
OFF
4°C .
7°C
13°C
67°C
Indoor heat exchange
temperature drops
50°C
Indoor heat exchange
temperature drops
52°C
01-20
or greater,