Method For Addressing Of Indoor And Hr Unit - LG MULTIV III Service Manual

HR Unit PCB

2. Method for Addressing of Indoor and HR Unit

1) Auto addressing for indoor unit
2) Auto pipe detection
3) Manual pipe detection(Execute in case of Auto pipe detection failure)
• Turn off all the indoor units before auto addressing.
If indoor unit is operated, auto addressing would not be completed.
1) Auto addressing for indoor unit
• The address of indoor units would be set by
auto addressing
1) Wait for 3 minutes after applying power supply
(Master and Slave Outdoor unit, Indoor unit).
2) Press the switch of the outdoor unit for
10~15seconds until display 88.(SW02B).
3) A "88" is indicated on 7-segment LED of the
outdoor unit PCB.
4) For completing addressing, 2~7 minutes are
required depending on numbers of indoor unit
connection set.
5) Numbers of inddor unit connection set whose
addressing is completed are indicated for
30seconds on 7-segment LED of the oudoor
unit PCB.
6) After completing addressing, address of each
indoor unit is indicated on the wired remote
control display window. (CH01, CH02, CH03,
........ CH06: Indicated as numbers of indoor
unit connection set).
CAUTION
• In replacement of the indoor unit PCB, always perform Auto addressing setting again
(At that time, please check about using Independent power module to any indoor unit.)
• If power supply is not applied to the indoor unit, operation error occur.
• Auto addressing is only possible on the master Unit.
• Auto addressing has to be performed after 3 minutes to improve communication.
2) Auto pipe detection
1) Turn No.1 of SW02M of HR unit PCB off.
2) Confirm that the setting of No.2, 3 of SW02M corresponds with the number of indoor units.
3) Reset the power of HR unit PCB
4) Turn on the No. 17 DIP S/W of main unit PCB when outdoor temperature is below 15℃(59℉)
Turn on the No. 14, 17 DIP S/W of main unit PCB when outdoor temperature is over 15℃(59℉)
5) Reset the power of outdoor unit.
6) Wait for 3 minutes.
7) Press SW01V of the outdoor unit main PCB for 5 Seconds.
8) The number of connected HR unit is displayed.
Ex) In case of installing four HR units : 04
9) Operated after 88 is displayed on 7-SEG of the outdoor unit main PCB.
Copyright ©2011 LG Electronics. Inc. All right reserved.
Only for training and service purposes
■ SUB PCB
DIP-SW01 DIP-SW02
- 26 -
7 - Segment
SW03B
(DATA CONFIRM)
SW02B
(AUTO ADDRESS)
LGE Internal Use Only