SM830035
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4
4. Service procedures
(6) PCB Setting
● Setting of outdoor control PCB
(A) Standard control (single outdoor unit)
In case of single outdoor unit installation,
no indoor unit’s setting is necessary for
twin, triple or quartet types (2, 3 or 4
indoor units).
Keep R.C. address setting at “0” as
factory shipment state.
In this case, auto. address operation is
performed automatically for the first time
when the power is switched on. This
operation takes about a few minutes.
(B) Group control (Multiple outdoor units)
In case of group control (up to 8 indoor
units can be connected with one remote
controller), before turning on the power
supply, set the R.C. address with S2, S3
on the outdoor control PCB.
R.C. address: Refrigerant circuit
address 1 ~ 30.
Regarding the example of R.C. address
for group control, please refer to R.C.
Address Setting Method.
(C) Central control (when using the
system controller)
In case of central control (when using the
system controller,that is, when linking
outdoor units in a network),
(a) Before turning the power supply on,
set the R.C. address with S2, S3 on
the outdoor control PCB.
(b) Remove the short plug (CN4, 2P
Black) from all outdoor units except
one outdoor unit.
Regarding the example of R.C. address
for central control and the position of
CN4, please refer to R.C. Address
Setting Method.
● Setting of indoor control PCB
No setting is necessary.
Each indoor unit address (UNIT No.: R.C. – No.) is decided after auto. address operation.
Indoor unit No.
Refrigerant Circuit No. (R.C. address)
Manual setting for indoor unit address can be performed also by remote controller.
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