Fujitsu AB 14LBAJ Series Service Instruction page 34

3-2. AO*30LMAW4
The defrosting shall proceed by the integrating operation time and outdoor heat exchanger temperature as follows.
Outdoor temp. > -1°C
Outdoor heat exchanger
temperarure:
Outdoor heat exchanger temperature: Over 12°C
Compressor ON time: Over 15 minutes
Heating operation start : Compressor ON
Compressor integrating
operation:
45 minutes and over
Outdoor temp. < -1°C
=
Outdoor heat exchanger
temperarure:
Below -8°C
Defrost start
Defrost Indicator:
[Operation lamp]
9 sec ON / 1 sec OFF
or
Defrost end
(Not defrosted for 6 or 10 minutes)
Below -10°C
3 sec later Compressor OFF
3 sec later Outdoor fan motor OFF
28 sec later 4-way valve OFF
34 sec later compressor ON
(Frequency : 92 Hz)
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