Defrost Flow Chart - Fujitsu AU*G36LRLA Service Instruction

3 phase type room air conditioner
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3. Defrost Flow Chart

The defrosting shall proceed by the integrating operation time
and outdoor heat exchanger emperature as follows.
In case of 1st defrost
Compressor
Compressor
integrating operation:
integrating operation:
Over 17 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 degC
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 10°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 : 400pulse
4-way valve : OFF
Compressor: ON
Frequency : 65rps (36 type)
EEV : 350pulse
(Outdoor HEX temp.> 2°C)
or
01-26
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.)
: 70rps (45/54/60 type)
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