Group Number Setting; Cool & Heat Selector (Fn 1) - LG Multi V PRHR042A Installation Manual

Group Number setting

Group Number setting for Indoor Units
- Confirm the power of whole system(Indoor Unit, Outdoor Unit) is
OFF, otherwise turn off.
- The communication cables connected to CEN.A and CEN.B terminal
should be connected to central control of Outdoor Unit with care for
their polarity (A-A, B-B ).
- Turn the whole system on.
- Set the group and Indoor Unit number with a wired remote control.
- To control several sets of Indoor Units into a group, set the group ID
from 0 to F for this purpose.
Outdoor Units (Main PCB)
SODU.B SODU.A IDU.B IDU.A CEN.B
B(D)
Example) Group number setting
1 F
Group Indoor unit
st
1 number indicate the group number
2nd number point out indoor unit number
Group recognizing the central controller
No.0 group (00~0F)
No.1 group (10~1F)
No.2 group (20~2F)
No.3 group (30~3F)
No.4 group (40~4F)
No.5 group (50~5F)
No.6 group (60~6F)
No.7 group (70~7F)
No.8 group (80~8F)
No.9 group (90~9F)
No. A group (A0~AF)
No. B group (B0~BF)
No. C group (C0~CF)
No. D group (D0~DF)
No. E group (E0~EF)
No. F group (F0~FF)
WARNING
!
• Valve address and central control address of its corresponding
indoor unit should be set identical in manual addressing.
EX)
HR unit
Setting the optional function
Select the mode/function/option/value using '▶', '◀' Button and
confirm that using the '●' button after DIP switch No.5 is turned on.
7-Segment
SW01C(●:confirm)
SW02C(◀:backward)
SW03C(▶:forward)
CEN.A DRY1 DRY2 GND 12 V
A(C)
Valve (04) Indoor unit (04)
Valve (03) Indoor unit (03)
Valve (02) Indoor unit (02)
Valve (01) Indoor unit (01)
Central control address
SW01D(reset)
SW04C(x:cancel)
DIP-SWITCH
Mode Function Option
Content Display1 Content Display2 Content
Cool & Heat oFF op1~
Selector op2
Static
pressure oFF op1
compensation
Night low op1~
oFF
noise op15
ODU
-
address
Snow
oFF op1~
removal &
op3
rapid defrost
Target
oFF op1~
pressure
op7
adjusting
* Functions save in EEPROM will be kept continuously, though the
system power was reset.
* Dip switch 3 can be OFF except when installing the only 4 series
indoor units (named ARNU***4).
CAUTION
!
• To perform the otional funtion should be sure that All the IDU is off
mode, unless the function will not be performed.
Cool & Heat selector (Fn 1)
Mode setting method
Service PCB DIP switch on : No.5
Select the mode using '▶', '◀' Button :
"Func" Push the '●' button
Select the Function using '▶', '◀' Button :
"Fn1" Push the '●' button
Select the Option using '▶', '◀' Button :
"oFF","op1","op2" Push the '●' button
Cool & Heat Selection mode is set
Function setting
Switch Control
Switch Switch
(Up) (Down)
Right side Left side
Not operate
(On) (On)
Right side Right side
Not operate
(On) (On)
Left side
- Not operate
(Off)
Right side
Left side
Switch (Up)
Switch (Down)
CAUTION
!
• Ask an authorized technician to setting a function.
• If do not use a function, set an off-mode.
• If use a function, first install a Cool & Heat selector.
Value Action
Display3 Content Display4 Implement Display5
Change
Selected
- - the set Blank
the option
value
Change
Selected
- - the set Blank
the option
value
Change
Selected
- - the set Blank
the option
value
set Change
- 0~255 the the set Blank
value value
Change
Selected
- - the set Blank
the option
value
Change
Selected
- - the set Blank
the option
value
Function
oFF op1(mode) op2(mode)
Cooling Cooling
Heating Heating
Fan mode Off
45
Remarks
Save in
EEPROM
Save in
EEPROM
Save in
EEPROM
Save in
EEPROM
Save in
EEPROM
Save in
EEPROM