Fujitsu ASYA07LBCM Service Manual page 21

4. COOLING PRESSURE OVER RISE PROTECTION
When the outdoor unit heat exchange sensor temperature rises to 6
the compressor is stopped and error display is indicated.
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 and outdoor heat exchanger temperature sensor.
(Fig 14 : Heating Overload Protection Control)
*1
Te : 54°C
*2
Te : 50°C
*1
Th> -9°C ---> Te : 54°C
-9°C>Th>-11°C ---> Te : 54°C
-11°C>Th>-13°C ---> Te : 52°C
-13°C>Th>-15°C ---> Te : 50°C
-15°C>Th
*2
Th> -9°C ---> Te : 50°C
-9°C>Th>-11°C ---> Te : 50°C
-11°C>Th>-13°C ---> Te : 48°C
-13°C>Th>-15°C ---> Te : 46°C
-15°C>Th
Compressor is OFF
Te : 63°C
The compressor rotation is
decreased 6 rps every 60 seconds.
48°C
Hold
44°C
Release of protection
=
=
=
=
---> Te : 48°C
=
=
=
=
---> Te : 44°C
Th : Outdoor heat exchange temperature
Te : Indoor heat exchange temperature
01-18
or greater,
7°C