Fujitsu AOU48RLXFZ Design & Technical Manual page 244

7-1-1. EXTERNAL INPUT
ON/OFF of the "Low noise mode", "External input priority mode", "Peak cut mode", and "Stop
operation mode" functions can be enable with an external field device.
LOW NOISE MODE
• The following reduces the operating sound of the outdoor unit from the normal sound.
The air conditioner is set to the "Low noise mode" when closing the contact input of a commercial
timer or ON/OFF switch to a connector on the outdoor control PC board.
* Performance may drop depending on the outside air temperature condition, etc.
Circuit diagram example
Outdoor unit
control PC board
Connector
1
2
* Make the distance from the PC board to the connected unit within 33ft (10m).
• Use the following parts and construct a circuit as shown above.
• Input Signal···ON : Low noise mode, Input Signal···OFF : Normal operation
* Set the "Low noise mode" level, refer to "5.FUNCTION SETTING".
ON
Input Signal
OFF
ON
Low noise mode
OFF
Parts (Optional)
Parts name
Model name
Connected unit
Ex.) Switch
Contact capacity : 24VDC or more, 10mA or more.
*33ft. (10m)
Signal
Field supply
External connect kit
UTY-XWZXZ3
- (06 - 90) -
6. SYSTEM DESIGN