Service manual

Field Settings SiBE061121_A
126 Trial Operation and Field Settings
4.4 Jumper and Switch Settings
Indoor Unit
For the location of the jumper, refer to page 10.
Outdoor Unit
For the location of the jumper and the switch, refer to page 12
,
14
,
15.
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 Jumper When connected
(factory set)
When 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.
Function Switch / Jumper Switch: OFF
Jumper: connected
(factory set)
Switch: ON
Jumper: cut
Improvement of
defrost
performance
25/35 class → J5
RXG50K2V1B → SW4-C
RXG50K3V1B → J8
Standard control Reinforced control (ex. The
frequency increases, the
duration time of defrost
lengthens.)