196 197
_TROUBLE SHOOTING GUIDE BOOK __
2. Function Control Setting
Select the mode/function/option/value using '▶', '◀' Button and confirm that using the '●' button after
dip switch No.5 is turned on.
■ The Function Table
FD
-
Function codes designated as "FDD" are used by the Multi V commissioning agent to assist with
system startup. No "FD" function code should be left in the "on" position without an authorized LG
commissioning agent approving the use.
FN
-
Function codes designated by "Installation" are used to modify the behavior of one or more com-
ponents of the VRF system. A change in the value of an "FN" function code typically impacts the
behavior of the refrigeration system control universally.
SE
-
Function codes designated as "Service" should only be used by a qualified Multi V VRF Service
Engineer. The "SE" codes are designed to provide the qualified service technician with manual
control of the VRF system component(s) as an aide in isolating an operational problem during
initial commissioning and startup or to assist the service technician with diagnosing an opera-
tional problem. No "SE" function code should be left in the "on" position without a qualified Multi V
service technician on site.
ID
-
Function codes designated by "IDU" are used to modify the behavior of one or more of the indoor
units. A modification to an ID function code value typically is used to fix a localized issue with a
single or group of indoor units.
Mode Display Function Selection Content
Model Type
Page
Heat
Recovery
Heat
Pump
Fdd
Fd 1 Automatic Refrigerant Charging (Cooling) ● ● 202
Fd 2 Automatic Refrigerant Charging (Heating) ● ● 202
Fd 3 Refrigerant Amount Check (Cooling) ● ●
-
Fd 4 Refrigerant Amount Check (Heating) ● ●
-
Fd 7 Automatic ITR (Cooling / Heating) ● ● 205
Fd 8 All IDU operation (Cooling) ● ● 209
Fd 9 All IDU operation (Heating) ● ● 209
Generation 4 Features (Gen. 4)
- Two (2) set point control between zone and central / gateway controllers.
- Improved cooling / heating thermal on / off range setting.
- Improved communication rate / auto addressing time.
- Fan off during cooling thermal off setting.
- New Premium controller / upgraded programmable controller.
- Improved group control airflow features.
- Indoor unit power consumption display.
- Added heating test mode / commissioning operation setting.
- Filter status notification.
- System product check feature using wall controller.
The latest versions of LG’s indoor units are 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 outdoor units must be Gen 4 or higher.
- All Outdoor units must have Gen 4 or higher software installed.
- Outdoor units DIP switch 3 must be set to ON (factory default setting is OFF).
- All controllers must support Gen 4 indoor unit features.
Select the mode/function/option/value using '▶', '◀' Button and confirm that using the '●' button after
dip switch No.5 is turned on.
Outdoor
Units*
Indoor
Units**
Heat recovery boxes
Outdoor Unit
Dipswitch No.3
Operation Status
Gen 4
or
Higher
Gen 4
ONLY
Model 2A ONLY
Must be ON
System will operate with Gen. 4
indoor unit features.
OFF
System will operate but without Gen.
4 indoor unit features.
Any combination of
Models 1A, 2A
Must be OFF
(factory default)
Does NOT include Gen. 4 features.
System will not operate if DIP
Switch No. 3 is ON, and an error
code CH200 will be generated to
ODU and CH242 on Gen 2 IDU.
Any com
-
bination of
Gen 2 and
Gen 4
Model 2A ONLY
Must be OFF
(factory default)
Any combination of
Models 1A, 2A
Any combination of
Models 0A****1A, 2A
N/A*** Does not include Gen. 4 features.
* Gen 4 or Higher outdoor units
: Multi V 5, Multi V IV or Multi V Water IV with Gen 4 or Higher software (see table below for Gen 4 or higher serial numbers) or Multi V S.
** 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 outdoor units is not related to Gen 4 features as it is with Gen 4 outdoor units.
**** 0A Model Heat Recovery boxes are not for use with Multi V 5, Multi V IV, Multi V Water IV, or Multi V III heat recovery systems.
1. Generation 4 Features
Basic PartBasic PartBasic PartBasic Part
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