Service manual

SiBE06-708_C Field Settings
Trial Operation and Field Settings 149
4.4 Jumper and Switch Settings
Indoor Unit
For the location of the jumper and the switch, refer to page 26, 27.
Outdoor Unit
For the location of the jumper and the switch, refer to page
28, 30, 32, 34, 36
.
Caution Replace the PCB if you accidentally cut a wrong jumper.
Jumpers are necessary for electronic circuit. Improper operation may occur if you cut any of
them.
Function Switch /
Jumper
Switch: OFF
Jumper: connected
(factory set)
Switch: ON
Jumper: cut
Fan speed setting when
compressor stops for
thermostat OFF. (effective only
in cooling operation)
JB Fan speed setting ;
Remote controller
setting
Fan speed setting; “0” (The fan
stops.)
Power failure recovery function JC Auto-restart The unit does not resume
operation after recovering from a
power failure. Timer settings are
cleared.
Upward airflow limit setting SW2-4 Exposed or half
embedded
installation
Set the switch to ON position
when you install the indoor unit
embedded in the wall.
Function Switch / Jumper Switch: OFF
Jumper: connected
(factory set)
Switch: ON
Jumper: cut
Improvement
of defrost
performance
25/35 class → J5
RK(X)S50F2V1B→ SW4-C
RK(X)S50G2V1B→ SW4-C
RXS50J2V1B → SW4-C
RXS50K2V1B → J8
Standard control Reinforced control (ex.
The frequency increases,
the duration time of
defrost lengthens.)