Fujitsu AU*G30LRLE series Service Instruction page 22

3. Defrost Flow Chart
The defrosting shall proceed by the integrating operation time
and outdoor heat exchanger temperature as follows.
In case of 1st defrost
Compressor Compressor
integrating operation: integrating operation:
Over 22 minutes to Over 62 minutes to
below 62 minutes below 240 minutes
Outdoor HEX temp.: Outdoor HEX temp.:
Below - 9°C Below - 5°C
Outdoor temp -
Outdoor HEX temp.
: Above 5 °C
*HEX : Heat EXchanger
Heating operation start : Compressor ON
Compressor
Compressor
integrating operation: integrating operation:
Over 35 minutes to
Over 240 minutes
below 215 minutes
Outdoor HEX temp.: Outdoor HEX temp.:
Below - 3°C Below - 6°C
Defrost start
Defrost Indicator:
[Operation lamp]
7 sec ON / 2 sec OFF
Outdoor heat exchanger temperature: Over 13°C
Compressor ON time: Over 15 minutes
Defrost end
(Not defrosted for 10 minutes)
In case of 2nd
and later defrost
Compressor Compressor
integrating operation: integrating operation:
Over 215 minutes to Over 240 minutes
below 240 minutes
Outdoor HEX temp.: Outdoor HEX temp.:
Below - 5°C Below - 3°C
Outdoor fan : OFF
Compressor : OFF
EEV : 480pulse
4-way valve : OFF
Compressor: ON
(Frequency : 55rps)
or
01-19
In case of Integrating defrost
for intermittent operation
Compressor
OFF count :
40 times
(Less than 10min.)
Compressor OFF:
Outside air temp.< 2°C
=
(More than 210 min.)