64 | ELECTRICAL CONNECTIONS
MULTI V Water 5 Water Source Unit Engineering Manual
Due to our policy of continuous product innovation, some specications may change without notication.
© LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG ” is a registered trademark of LG Corp.
DIP SWITCH SETTINGS FOR USE
WITH GEN 4 INDOOR UNITS
Air / Water Source Units Model Starting Production Date Production Starting Serial No. Upgrade Software Service
Multi V 5 with LGREDº* ARUM****TE5 February 1, 2019 1902xxx N/A
Multi V 5 ARUM****TE5 February 1, 2018 1802xxx September 28, 2018
Multi V S ARUB060GSS4 October 1, 2018 1810xxx September 28, 2018
Multi V Water IV ARWB****AS4 October 1, 2018 1810xxx September 28, 2018
Multi V IV ARUB****TE4 N/A N/A October 31, 2018
Multi V II and III
ARUB****TE2
ARUB****TE3
N/A N/A N/A
Multi V Water II ARWB****A2 N/A N/A N/A
Figure 12: Location and Setting of Outdoor Unit DIP Switch 3.
1 2 76543
1 2 76543
ON
OFF
1 2 76543
1 2 76543
ON
OFF
Table 19: PRHR*3 Heat Recovery Unit to Air / Water Source Unit Compatibility.
PRHR*3 Heat Recovery Units
The PRHR*3A series of Heat Recovery units were released in June 2018, are not automatically backwards compatible with all LG
manufactured VRF air / water source units. The 3A series of Heat Recovery units will be compatible with many LG manufactured air / water
source units if the “Starting Production Date”, the “Production Starting Serial No.,” and / or the “Upgrade Software Service” dates fall after the
dates shown below (see table).
LG VRF systems can operate with both old 2A Heat Recovery units and new 3A Heat Recovery units, if the outdoor unit software has been
upgraded. If a system includes a mix of both old and new Heat Recovery units, the system design must follow 2A Heat Recovery unit series
piping rules.
*Low ambient performance with LGREDº heat technology is included in Multi V 5 air source units produced after February 1, 2019.
Generation 4 Equipment
LG’s indoor units are designated Generation 4 (Gen 4). For Gen
4 indoor units to operate with Gen 4 indoor unit features, the air
conditioning system must meet the following requirements:
• All indoor units, heat recovery units, and air / water source units
must be Gen 4 or higher.
• All air / water source units must have Gen 4 or higher software
installed.
• Air / water source units DIP switch 3 must be set to ON
(factory default setting is OFF).
• All controllers must support Gen 4 indoor unit features.
The figure at right shows the outdoor unit DIP switch. All air and wa-
ter source units, indoor units, heat recovery units, and controllers in
a system must be Gen 4 compatible or the system will not operate
with Gen 4 indoor unit features.
HRU Compatibility and Gen 4 Dip Switch Settings
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