Fujitsu AOU36RLX Service Instruction

20. VARIOUS PROTECTIONS
1. DISCHARGE GAS TEMPERATURE OVER RISE PREVENTION CONTROL
The discharge gas thermosensor (discharge thermistor : Outdoor side) will detect discharge gas
temperature.
When the discharge temperature becomes higher than Temperature ,the compressor frequency
is decreased 10 Hz, and it continues to decrease the frequency for 10 Hz every 120 seconds until
the temperature becomes lower than Temperature .
When the discharge temperature becomes lower than Temperature ,the control of the compressor
frequency is released.
When the discharge temperature becomes higher than Temperature ,the compressor stops.
When the discharge temperature becomes lower than Temperature ,the compressor operates.
(Table 12 : Discharge Temperature Over Rise Prevention Control / Release Temperature)
2. CURRENT RELEASE CONTROL
The compressor frequency is controlled so that the outdoor unit input current does not exceeds
the current limit value that was set up with the outdoor temperature.
The compressor frequency returns to the designated frequency of the indoor unit at the time
when the frequency becomes lower than the release value.
(Table 13 : Current Release Operation Value / Release Value)
[ Heating ]
01-19
Temperature Temperature Temperature Temperature
ABU18RULX
ABU24RULX
ABU36RSLX
221°F (105°C) 212°F (100°C) 239°F (115°C) 176°F (80°C)
ABU18RULX
T0 > 68°F (20°C)
T0 < 68°F (20°C)
=
T0: Outdoor temperature
780 rpm 400 rpm 250 rpm 220, 200 rpm
10.0A / 9.5A
10.0A / 9.5A 8.0A / 7.5A 6.0A / 5.5A
12.0A / 11.5A
Outdoor unit fan speed
ABU24RULX
T0 > 68°F (20°C)
T0 < 68°F (20°C)
=
T0: Outdoor temperature
900, 780 rpm 400 rpm 250 rpm 220, 200 rpm
10.0A / 9.5A
10.0A / 9.5A 8.0A / 7.5A 6.0A / 5.5A
12.0A / 11.5A
Outdoor unit fan speed
ABU36RSLX
T0 > 53.6°F (12°C)
T0 < 41°F (5°C)
53.6°F > T0 > 41°F
(12°C) (5°C)
=
=
T0: Outdoor temperature
780 rpm900 rpm 400 rpm 250 rpm 220 ,200 rpm
15.0A / 14.5A 15.0A / 14.5A 13.0A / 12.5A 10.0A / 9.5A 8.0A / 7.5A
18.0A / 17.5A 18.0A / 17.5A 18.0A / 17.5A 18.0A / 17.5A
18.0A / 17.5A
Outdoor unit fan speed

Fujitsu AOU36RLX Specifications

General

Brand	Fujitsu
Model	AOU36RLX
Category	Air Conditioner
Language	English