Fujitsu AUYG18LVLB, Design & Technical Manual

Page: 240 / 343

6-2. Outdoor unit
Connector Input Output Remarks
CN131 Low noise mode —
For details, refer to external input and
output settings.
CN132 Peak cut mode —
CN136 — Error status
CN137 — Compressor status
¢
External input
With using external input function, on/off status of “Low noise mode” and “Peak cut mode” can be
specified by the external signal.

Low noise mode
In following condition, the operating noise of the outdoor unit reduces comparing from the one in nor-
mal operating condition:
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 control PCB of the outdoor unit.
NOTE: Product performance may drop depending on some conditions such as the outdoor temper-
ature.
• Circuit diagram example (CN131)
Outdoor unit
control PCB
Connected unit
Example: Switch
Signal
*10 m
Connector
Locally purchased
CN131
• Contact capacity: DC 24 V or more, 10 mA or more.
• *: Make the distance from the PCB to the connected
unit within 10 m.
• Construct a circuit as shown in this figure with using op-
tional parts mentioned below.
• Input signal: On in “Low noise mode”
• Input signal: Off in normal operation
• To set the level of “Low noise mode”, refer to
"Low
noise mode" on page 282.
On
Off
On
Off
Input signal
Low noise mode
• Optional part
Part name Model name Exterior
External connect kit UTY-XWZXZ3
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6-2. Outdoor unit 6. External input and output
SYSTEM DESIGN SYSTEM DESIGN