Fujitsu AOU18RLXFW Service Manual

01-14
3. Defrost Flow Chart
The defrosting shall proceed by the integrating operation time, outdoor temperature
and outdoor heat exchanger temperature as follows.
(Not defrosted for 10 minutes)
Heating operation start : Compressor ON
Outdoor heat exchanger temperature: Over 55° F(13°C)
or
Compressor ON time: Maximum 15 minutes
Defrost end
Compressor
integrating
operation:
Over 22 minutes
Compressor
integrating
operation:
Over 62 minutes
Outdoor
heat exchanger
temperature:
Below 15.8°F(- 9°C)
Outdoor
heat exchanger
temperature:
Below 23°F(- 5°C)
Compressor
integrating
operation:
Over 35 minutes
2nd and later defrost
Compressor : OFF
Outdoor fan motor : OFF
30 sec later 4-way valve : OFF
35 sec later compressor : ON
Compressor
integrating
operation:
Over 210 minutes
Integrating defrost
(Constant monitoring)
Defrost Indicator:
[Operation lamp]
7 sec ON / 2 sec OFF
Defrost start
Outdoor
heat exchanger
temperature:
Below 21.2°F(- 6°C)
Outdoor
heat exchanger
temperature:
Below 26.6°F(- 3°C)
Compressor
OFF count :
40 times
1st defrost

Fujitsu AOU18RLXFW Specifications

General

Brand	Fujitsu
Model	AOU18RLXFW
Category	Air Conditioner
Language	English