Fujitsu AU*A12LALN Service Instruction page 41

5-6. OUTDOOR FAN CONTROL
1. Outdoor Fan Motor
1-1. For AU*A12/ 14/ 18/ 24LALN
Following table shows the fan speed of the outdoor unit.
Table 6 : Fan speed of the outdoor unit
AU*A12LALN
AU*A14LALN
AU*A18LALN
AU*A24LALN
AU*A12LALN
AU*A14LALN
AU*A18LALN
AU*A24LALN
The outdoor fan speed is changed in the range of the speed shown in the above table,
based on the frequency of the compressor.
(When the compressor frequency increases, the outdoor fan speed is also changed to
higher speed. If the compressor frequency decreases, the outdoor fan speed is changed
to the lower speed as well.)
After starting up the outdoor fan, it operates with the following speed for initial 20 seconds.
Table 7 : Fan speed when starting up outdoor fan
AU*A12LALN
AU*A14LALN
AU*A18LALN
AU*A24LALN
After operating the defrost control function on heating mode except economy operation,
its speed becomes 950rpm (AU*A12/14/18L) and 1050rpm (AU*A24L)
regardless of the compressor frequency.
However, it returns to the normal speed control when the defrosting operation does not function
for 240 minutes after releasing the defrost operation or when the outdoor temperature sensor
detection value becomes higher than 5°C.
Outdoor temperature
Over than 12°C
Less than 12°C
Over than 12°C
Less than 12°C
Over than 12°C
Less than 12°C
Heating
950/ 820/ 750/ 700/ 550/ 450 rpm
950/ 820/ 750/ 670/ 550/ 450 rpm
1050/ 1000/ 730/ 670/ 550/ 450 rpm
Outdoor temperature
Over than 12°C
Less than 12°C
Cooling
860/ 820/ 770/ 670/ 500 rpm
400/ 340/ 280/ 250/ 230 rpm
860/ 820/ 670/ 500 rpm
400/ 340/ 280/ 250/ 230 rpm
950/ 820/ 670/ 500 rpm
400/ 340/ 280/ 250/ 230 rpm
Fan speed
500 rpm
200 rpm
05-07
Dry
500 rpm
400/ 340/ 280/ 250/ 230 rpm
500 rpm
400/ 340/ 280/ 250/ 230 rpm
500 rpm
400/ 340/ 280/ 250/ 230 rpm