Install Instructions
Table Of Contents
46
Single Zone High Efciency, Standard, Extended Pipe and Mega Wall Mount 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.
ELECTRICAL WIRING
Additional screens can be accessed by tabs on the main screen.
Additional screens include the following:
1. Cycleview (Figure 67): 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 enables user to go back in
time and view data.
3. Control FTN: Enables user to turn on IDUs in 1.8°F increments.
4. Useful Tab
•Unit Conversion: Converts metric values to imperial values.
•Actual inverter compressor speed
•Target inverter compressor speed
•Actual outdoor fan speed
•Target outdoor unit fan speed
•Actual superheat
•Target superheat
•Actual subcooler circuit superheat
•Target subcooler circuit superheat
•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
•Front outdoor coil pipe temperature
•Back outdoor coil pipe temperature
•Liquid line pipe temperature
•Subcooler inlet temperature
•Subcooler outlet temperature
•Average indoor unit (IDU) pipe temperature
•Inverter compressor operation indicator light
•Liquid injection
valves’ operation
indicator lights
•Hot gas bypass valve
operation indicator
light
•Four-way reversing
valve operation
indicator light
•Pressure graph
showing actual low
pressure and high
pressure levels
•Error code display
•Operating mode
indicator
•Target high pressure
•Target low pressure
•PCB (printed circuit board) version
•Software version
•Installer name
•Model number of IDUs
•Site name
•Total number of connected IDUs
•Communication indicators
•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
LGMV software (PRCTSL1 and PRCTFE1) allows the service technician or commissioning agent to connect a computer USB port to the
Single Zone unit’s main printed circuit board (PCB) using an accessory cable without the need for a separate interface device. The monitor-
ing screen for LGMV allows the user to view the following real time data on one screen (Figure 66):
Figure 66: MV Real-time Data Screen
Figure 67: MV Cycleview
Images on these pages are examples of LGMV screenshots. Actual images may differ depending on the version of the software and the unit installed.
Self Diagnosis Functions