Current Release Control; Compressor Temperature Protection - Fujitsu AMUG30LMAS Service Manual

7-3. Current release control

The rotation number of compressor is controlled so that the outdoor unit input current does not ex-
ceeds current limit value set according to the outdoor temperature.
The rotation number of compressor returns according to the operation mode, when the current be-
comes lower than the release value.
¢ Model: AOUH30LUAH1
Operation mode
Cooling
Heating
¢ Model: AOUH36LMAH1
Operation mode
Cooling
Heating
¢ Model: AOUH48LMAH1
Operation mode
Cooling
Heating

7-4. Compressor temperature protection

When the compressor temperature sensor detects higher than the trigger condition below, the com-
pressor is stopped. When the compressor temperature sensor detects the release condition, the pro-
tection is released.
Trigger condition
Release condition
7-3. Current release control
Outdoor temp. (Ta)
125.6 °F (52 °C) ≤ Ta
122.0 °F (50 °C) ≤ Ta < 125.6 °F (52 °C)
114.8 °F (46 °C) ≤ Ta < 122.0 °F (50 °C)
Ta < 114.8 °F (46 °C)
53.6 °F (12 °C) ≤ Ta
35.6 °F (2 °C) ≤ Ta < 53.6 °F (12 °C)
Ta < 35.6 °F (2 °C)
Outdoor temp. (Ta)
125.6 °F (52 °C) ≤ Ta
122.0 °F (50 °C) ≤ Ta < 125.6 °F (52 °C)
114.8 °F (46 °C) ≤ Ta < 122.0 °F (50 °C)
Ta < 114.8 °F (46 °C)
53.6 °F (12 °C) ≤ Ta
35.6 °F (2 °C) ≤ Ta < 53.6 °F (12 °C)
Ta < 35.6 °F (2 °C)
Outdoor temp. (Ta)
125.6 °F (52 °C) ≤ Ta
122.0 °F (50 °C) ≤ Ta < 125.6 °F (52 °C)
114.8 °F (46 °C) ≤ Ta < 122.0 °F (50 °C)
Ta < 114.8 °F (46 °C)
53.6 °F (12 °C) ≤ Ta
35.6 °F (2 °C) ≤ Ta < 53.6 °F (12 °C)
Ta < 35.6 °F (2 °C)
- (04-24) -
Trigger condition Release condition
10.0 A
13.0 A
15.0 A
17.0 A
18.0 A
20.0 A
24.0 A
Trigger condition Release condition
12.0 A
15.0 A
17.0 A
18.0 A
21.0 A
23.0 A
27.0 A
Trigger condition Release condition
15.0 A
18.0 A
20.0 A
23.0 A
21.0 A
25.0 A
30.0 A
226.4°F (108°C)
176.0°F (80°C)
(3 minutes after compressor stop)
9.5 A
12.5 A
14.5 A
16.5 A
17.5 A
19.5 A
23.5 A
11.5 A
14.5 A
16.5 A
17.5 A
20.5 A
22.5 A
26.5 A
14.5 A
17.5 A
19.5 A
22.5 A
20.5 A
24.5 A
29.5 A
7. Various protections