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MULTI V Water IV System Installation Manual
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.
Additional screens can be accessed by clicking on tabs on the main
screen. Additional screens include:
1. Cycleview: Graphic of internal components including:
• Compressors showing actual speeds
• EEVs
• IDUs
• Temperature and pressure sensors
• Four-way reversing valve
2. Graph: Full screen graph of actual high and low pressures and high
and low pressure limits. A sliding bar allows viewing of previously
recorded data.
3. Control FTN: Enables user to turn on IDUs in 1.8°F increments.
• Actual inverter compressor speed
• Target inverter compressor speed
• Actual superheat
• Target superheat (High version)
• Actual subcooler circuit superheat
• Target subcooler circuit superheat
(High version)
• Main EEV position
• Subcooling EEV position
• Inverter compressor current transducer
value
• Outdoor air temperature
• Actual high pressure/saturation
temperature
• Actual low pressure/saturation
temperature
• Suction temperature
• Inverter compressor discharge
temperature
• Upper outdoor coil pipe temperature
• Lower outdoor coil pipe temperature
• Liquid line pipe temperature
• Subcooler inlet temperature
• Subcooler outlet temperature
• Four-way reversing valve operation
indicator light
• Pressure graph showing actual low
pressure and actual high
pressure levels
• Error code display
• Operating mode indicator
• Target high pressure (High version)
• Target low pressure (High version)
• PCB (printed circuit board) version
• Software version
• Installer name
• Model number
• Site name
• Total number of connected IDUs
• Communication indicator
• IDU capacity
• IDU operating mode
• IDU fan speed
• IDU EEV position
• IDU room temperature
• IDU inlet pipe temperature
• IDU outlet pipe temperature
• IDU error code
LG MONITORING VIEW (LGMV)
DIAGNOSTIC SOFTWARE
LG Monitoring View (LGMV) software allows real-time monitoring of Multi V Water IV system operating parameters. An industry-standard
personal computer (PC) running LGMV connects to the main printed circuit board (PCB) of the water source unit through an LG interface
cable. Two versions of LGMV are available: the Low version, which displays real-time parameters, and the High version, which displays the
real-time parameters and the parameter targets. This software can be used to both commission new systems and troubleshoot existing sys-
tems. LGMV data can be recorded to a .csv file and emailed to an LG representative to assist with diagnostic evaluations. For detailed LGMV
software information, contact your LG representative.
Images on these pages are examples of LGMV screens. Actual
screens may differ depending on the version of the software and
the units installed.
Recommended Minimum PC Configuration:
• CPU: Pentium
®
IV 1.6 GHz
• Main Memory: 1G
• Operating System: Windows
®
XP/Vista/7
32 bit (recommended), 64 bit
• Hard Disk: 600 MB when operating
• MS Office 2003, 2007 (recommended)
for select reporting functions
LGMV Data Display
LGMV displays the following real-time data:
Figure 88: LGMV Real-time Data Screen.
Figure 89: LGMV Cycleview.
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