Central Controllers

The LG innovative AC Smart IV central controller communicates with LG indoor units and controls third-party devices, offering advance features in addition to basic system control and monitoring. These features include web access, auto-changeover, error e-mail notification, visual floor plan navigation and interlocking. Ideal for office buildings, schools and other commercial applications, the controller outfitted with a clear, 10.2-inch LCD touch-screen display with user-controlled web access, making monitoring HVAC systems simple and convenient.


Model No: PACS4B000


Standard Features

  • 10.2 inch WSVGA TFT LCD Touch Screen
  • Indoor Unit Control/Monitoring by Groups/Indoor Units
  • Web Access with User Access Control
  • Operation and Error History Log
  • Forced Off Digital Input
  • One Digital Input and two Digital Outputs for Device Interlocking
  • Control of up to 128 indoor units or 130 I/O points 

Basic Unit Functions

  • Operation – On/Off
  • Mode – Auto/Cool/Dry/Heat/Fan Only
  • Setpoint
  • Fan Speed – Auto/Low/Med/High/Power
  • Louver Swing

Advanced Unit Functions

  • Two Setpoint Auto-changeover
  • Two Setpoint Setback
  • 200 Programmable Schedule Events with control of setpoint, On/Off, Mode, Fan Speed, controller Lock, and Louver Swing
  • Temperature Setpoint Range Limit
  • Remote Controller Lock (All, Setpoint, Mode, Fan Speed)
  • Run Time Limit (Unoccupied Override)
  • Software Device Interlocking
  • Manual Control and Scheduling of Digital Output Kit
  • Peak/Demand Control
  • Visual Floorplan Navigation
  • Error E-mail Notification
  • Power Distribution Indicator (PDI) (optional)
Download Type Category Title Model No.
Download Submittals Controls AC Smart IV PACS4B000
Download Installation Manuals Controls AC Smart IV PACS4B000
Download Installation Manuals Outdoor Units Best Practices for LG HVAC System Installation
Download Owners Manuals Controls Advanced Control Platform User Interface Guide
Download Owners Manuals Controls AC Smart IV PACS4B000
Download Product Warranty Controls Controls