Fujitsu AOUG09LZAS1, Service Manual

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8-3. Current release control
The compressor frequency is controlled so that the outdoor unit input current does not exceeds cur-
rent limit value set according to the outdoor temperature.
The compressor frequency returns according to the operation mode, when the current becomes low-
er than the release value.
¢
Models: AOUG09LZAS1 and AOUG12LZAS1
Operation mode Outdoor temp. (Ta) Trigger condition Release condition
Cooling
122.0°F (50°C) ≤ Ta 4.5 A 4.0 A
114.8°F (46°C) ≤ Ta < 122.0°F (50°C) 4.5 A 4.0 A
104.0°F (40°C) ≤ Ta < 114.8°F (46°C) 6.0 A 5.5 A
53.6°F (12°C) ≤ Ta < 104.0°F (40°C) 8.5 A 8.0 A
35.6°F (2°C) ≤ Ta < 53.6°F (12°C) 8.5 A 8.0 A
Ta < 35.6°F (2°C) 8.5 A 8.0 A
Heating
62.6°F (17°C) ≤ Ta 7.0 A 6.5 A
53.6°F (12°C) ≤ Ta < 62.6°F (17°C) 9.0 A 8.5 A
41.0°F (5°C) ≤ Ta < 53.6°F (12°C) 10.0 A 9.5 A
Ta < 41.0°F (5°C) 10.0 A 9.5 A
¢
Model: AOUG15LZAS1
Operation mode Outdoor temp. (Ta) Trigger condition Release condition
Cooling
50°C ≤ Ta 4.5 A 4.0 A
46°C ≤ Ta < 50°C 4.5 A 4.0 A
40°C ≤ Ta < 46°C 6.0 A 5.5 A
12°C ≤ Ta < 40°C 9.0 A 8.5 A
2°C ≤ Ta < 12°C 9.0 A 8.5 A
Ta < 2°C 9.0 A 8.5 A
Heating
17°C ≤ Ta 7.0 A 6.5 A
12°C ≤ Ta < 17°C 9.0 A 8.5 A
5°C ≤ Ta < 12°C 11.0 A 10.5 A
Ta < 5°C 12.5 A 12.0 A
8-4. Cooling pressure over-rise protection
When the outdoor unit heat exchanger temperature reaches trigger condition below, the compressor
is stopped and trouble display is performed.
Trigger condition 149.0°F (65°C)
8-5. Low outdoor temperature protection
When the outdoor temperature sensor detects lower than the trigger condition below, the compres-
sor is stopped.
Operation mode Cooling/Dry
Trigger condition -15°C
Release condition -10°C
8-3. Current release control
- (04-30) -
8. Various protections
CONTROL AND FUNCTIONS CONTROL AND FUNCTIONS