Outdoor Fan Control - Fujitsu AR 18LUAD Series Service Instruction

5-6. OUTDOOR FAN CONTROL

1. Outdoor Fan Motor
Following table shows the fan speed of the outdoor unit.
( Table 6 : Fan speed of the outdoor unit )
AR*18LUAD
AR*24LUAN
AR*30LUAN
AR*36LUAN
AR*45LUAN
AR*45LUAK
AR*54LUAK
AR*45LUAN/ AR*45LUAK/ AR*54LUAK have two fan motors.
*
The outdoor fan speed changs in the range mentioned avobe depending on the compressor
*
frequency and outdoor temperature.
(When the compressor frequency and outdoor temperature increase, the outdoor fan speed
also changes to the higher speed.
When the compressor frequency and outdoor temperature decrease, the outdoor fan
speed also changes to the lower speed.)
For AR*18LUAD/ AR*24LUAN
*
When the outdoor heat exchanger tenperature is lower than
the fan speed switches to 780rpm on heating mode.
For AR*30/ 36LUAN
*
It runs at 500rpm for 20 seconds after starting up the outdoor fan.
When the outdoor heat exchanger tenperature is lower than
the fan speed switches to 900rpm on heating mode.
For AR*45LUAN/ AR*45LUAK/ AR*54LUAK
*
It runs at 500rpm for 20 seconds after starting up the outdoor fan.
When the outdoor heat exchanger tenperature is lower than
the fan speed switches to 850rpm(Upper fan) and 750rpm(Lower fan on heating mode.
Cooling
780/ 400 rpm
850/ 780/ 400/ 250/ 170 rpm
Upper fan
850/ 780/ 400/ 350/ 300 rpm
Lower fan
780/ 750/ 350/ 0 rpm
780/ 400 rpm
900/ 780/ 400/ 250/ 170 rpm
850/ 780/ 350/ 200/ 150 rpm
780/ 750/ 350/ 200/ 150 rpm
2°C,
2°C,
2°C,
05-07
Heating