Si18-525B Test Operation and Field Setting for RA Indoor Unit
Test Operation 193
5.2 Jumper Settings
5.2.1 When Two Units are Installed in One Room
When two indoor units are installed in one room, the two wireless remote controllers can be set
for different addresses.
How to set the different addresses
Control PCB of the indoor unit
(1) Remove the electrical box.
(2) Cut the address jumper JA on the control PCB.
Wireless remote controller
(1) Slide the front cover and take it off.
(2) Cut the address jumper J4.
5.2.2 Jumper Setting
(R4417)
ADDRESS
JA
ADDRESS
JA
EXIST
1
CUT 2
ADDRESS
J4
EXIST
CUT
1
2
J4
(R4418)
Jumper
(On indoor PCB)
Function When connected
(factory set)
When cut
JC Power failure
recovery function
Auto start Unit does not resume operation
after recovering from a power
failure. Timer ON-OFF settings
are cleared.
JB Fan speed setting
when compressor is
OFF on thermostat.
(effective only at
cooling operation)
Fan speed setting ;
Remote controller
setting
Fan rpm is set to “0”
<Fan stop>
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