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SiUS091133
Field Settings
Trial Operation and Field Settings
390
24/30/36 class
Caution
1. If the outdoor unit is installed where the outdoor heat exchanger of the unit is exposed to direct
wind, provide a windbreak wall.
2. Intermittent noises may be produced by the indoor unit due to the outdoor fan turning on and off
when using facility settings.
3. Do not place humidifiers or other items which might raise the humidity in rooms where facility
settings are being used.
A humidifier might cause dew jumping from the indoor unit outlet vent.
4. Cutting the jumper sets the indoor fan tap to the highest position. (09/12/15/18 class)
5. Use the indoor unit at the highest level of airflow rate. (24/30/36 class)
4.5
Jumper Settings
For the location of the jumper, refer to the following pages.
Indoor unit; page 14, 17, 20
SW4
ON
ABCD
SW1
(R14478)
Turn on
the switch
SW4-B.
LED-A
S2
S102
Jumper
Function
When
connected
(factory set)
When cut
JB (on indoor unit
PCB)
Fan speed setting when
compressor stops for
thermostat OFF. (effective only
at cooling operation)
Fan speed
setting; Remote
controller
setting
Fan rpm is set to “0” <Fan
stop>
JC (on indoor unit
PCB)
Power failure recovery function Auto-restart
The unit does not resume
operation after recovering from
a power failure. Timer ON/OFF
settings are cleared.