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WIRING
DIP Switch Settings for Gen4 Equipment
Generation 4 Equipment
The latest versions of LG's indoor units and outdoor (air/water source) units are designated Generation 4 (Gen 4). For Gen 4 units to operate
with Gen 4 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.
• All air/water source units must have Gen 4 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 features.
Figure 41 shows the ODU DIP switch. Table 19 lists how combining
different components will affect system operation. Table 20 lists the
serial numbers of air and water source units that have Gen 4 soft-
ware. All air and water 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 features.
Air / Water
Indoor Unit(s)**
Source Units*
Gen 4
Gen 4 ONLY
Gen 4
Gen 4 ONLY
Gen 4
Gen 4 ONLY
Any combination of
Gen 4
Gen 2 and Gen 4
Any combination of
Gen 4
Gen 2 and Gen 4
Any combination of
Gen 2
Gen 2 and Gen 4
*Gen 4 Air/Water Source Units = Multi V IV or Multi V Water IV with Gen 4 software (see table below for Gen 4 serial numbers) or Multi V S.
Gen 2 Air/Water Source Units = Multi V II, Multi V III, Multi V IV without Gen. 4 software, Multi V Water II, Multi V Water IV without Gen. 4
software, Multi V Mini, Multi V Water Mini, or Multi V Space II.
**Gen 4 Indoor Units model numbers end in "4"; Gen 2 Indoor Units model numbers end in "2" or an "A", including Hydro Kit.
***DIP Switch No. 3 on Gen 2 air/water source units is not related to Gen 4 features as it is with Gen 4 air/water source units.
****0A Model Heat Recovery units are not for use with Multi V IV, Multi V Water IV, or Multi V III heat recovery systems.
Air/Water Source Unit
Model Type
Serial Number of Air/Water
Source Units with
Gen 4 Software
52
Table 19: System Component Combinations and Operation Status
Heat Recovery
Unit(s)
Model 2A ONLY
Model 2A ONLY
Any combination of
Models 1A, 2A
Model 2A ONLY
Any combination of
Models 1A, 2A
Any combination of
Models 0A****, 1A, 2A
Table 20: Serial Numbers of Air/Water Source Units with Gen 4 Software
Multi V IV Air Source
Heat Pump
502********* and Higher
503********* and Higher
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. "LG" is a registered trademark of LG Corp.
Figure 41: Location and Setting of ODU DIP Switch 3
ODU/WSU DIP Switch No. 3
ON
OFF
1 2
3
4
1 2
3
4
Outdoor Unit DIP
Switch No. 3
Must be ON
System will operate WITH Gen. 4 features.
OFF
System will operate but WITHOUT Gen. 4 features.
Must be OFF
(factory default)
Does NOT include Gen. 4 features. System will not
Must be OFF
operate if DIP Switch No. 3 is ON, and an error code will
(factory default)
be generated.
Must be OFF
(factory default)
N/A***
Does not include Gen. 4 features.
Multi V Air Source
Multi V IV Water Source
Heat Recovery
ON
OFF
5
6
7
1 2
3
5
6
7
1 2
3
Operation Status
Multi V IV Water Source
Heat Pump
Heat Recovery
504********* and Higher
4
5
6
7
4
5
6
7
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