Fujitsu AIRSTAGE ASEH09KHCBN Service Manual page 170

¢ Model: AOEH14KHCBN
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.
Operation mode
Cooling
Heating
8-4. Compressor temperature protection
→hen the compressor temperature sensor detects higher than the trigger condition below, the com-
pressor is stopped. →hen the compressor temperature sensor detects the release condition, the pro-
tection is released.
Trigger condition
Release condition
8-5. High pressure protection
Trigger condition
Release condition
8-6. Low outdoor temperature protection
→hen the outdoor temperature sensor detects lower than the trigger condition below, the compres-
sor is stopped.
Operation mode
Trigger condition
Release condition
8-3. Current release control
Outdoor temp. (Ta)
50°C ≤ Ta
46°C ≤ Ta < 50°C
40°C ≤ Ta < 46°C
12°C ≤ Ta < 40°C
2°C ≤ Ta < 12°C
Ta < 2°C
17°C ≤ Ta
12°C ≤ Ta < 17°C
5°C ≤ Ta < 12°C
Ta < 5°C
- (04-36) -
Trigger condition
7.0 A
7.0 A
8.0 A
8.0 A
8.0 A
8.0 A
10.5 A
13.0 A
15.0 A
15.0 A
108°C
80°C
(3 minutes after compressor stop)
Pressure switch: Off (Open: Higher than 4.2 MPa)
Compressor stop
Pressure switch: On (Close: Lower than 3.2 MPa)
(3 minutes after compressor stop)
Compressor restart
Cooling/Dry
-15°C
-10°C
Release condition
6.5 A
6.5 A
7.5 A
7.5 A
7.5 A
7.5 A
10.0 A
12.5 A
14.5 A
14.5 A
8. Various protections