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T
roubleshooting
TROUBLESHOOTING
Due to our policy of continuous product innovation, some specifications may change without notification.
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Additional screens can be accessed by tabs on the main screen.
Additional screens include the following:
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 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 130: MV Real-time Data Screen.
Figure 131: 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.
LG Monitoring View (LGMV) Diagnostic Software
