LG Tri-Zone Multi F Installation Manual page 68

TROUBLESHOOTING
Self Diagnosis Functions
LG SIMS
The SIMs WLAN module and the smart phone app together provide monitoring and trouble-
shooting capability for LG Multi F / Multi F MAX systems. SIMs functions only with LG Duct Free
products.
SIMs can display and graph operational data for the air conditioner system including the indoor
unit and the outdoor unit. SIMs also displays error codes and a troubleshooting guide. A full copy
of the LG SIMs Smart Inverter Monitoring System User's Manual is available on the www.lghvac.
com website.
To use SIMs you must be a trained HVAC service technician familiar with variable refriger-
ant flow (VRF) systems in general and with LG's Duct Free System products. You should
understand the inverter air conditioning operation cycle, the meaning of the data displayed by
SIMs, and how to use the data to troubleshoot the system.
Figure 106 shows a Multi F configuration used with the SIMs module and app. LG SIMs can
also be used with Single Zone one-to-one configurations such as the Single Zone Wall Mount
systems.
High voltages capable of causing death are used
in this equipment. Outdoor unit power remains con-
not to touch electrical components or connections.
Failure to observe this warning can result in death
or severe injury.
• The Duct Free System air conditioning system
must run for at least 15–20 minutes before data
collected by SIMs 2.0 is valid for troubleshoot-
ing.
• The free SIMs app must be correctly installed on
your smart phone before using SIMs.
•
accessed by removing the side handle cover.
cover of the ODU.
SIMs App Main Info Screen
The main screen is the first screen displayed after wireless connection is
established. Tap the Main Info tab to display current readings regarding
your indoor and outdoor unit(s). The Operational Info area of the screen
will show active functions or modes by illuminating the light to the right of
the function.
Additional Help information can be accessed by tapping the Help Menu
buttons at the bottom of this screen.
68
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.
Figure 105: LG SIMs App and WLAN Module
Figure 106: SIMs WLAN Module to Typical DFS System
LG SIMs App
on Smart Phone
Figure 107: SIMs App Main Info Screen
Operational
Information
AC Cycle
Information on
Main Info Tab
Help Menu
(File is Factory Use Only)
F
MULTI
F
MULTI MAX
LG SIMs
WLAN Module