LG UNIVERSAL SPLIT AIR CONDITIONING FAULT COEDS
# The function provides self-diagnosis and displays an error code if there is any trouble.
# Error codes are displayed on the Indoor unit's Wired Remote as CH**, and/or Fascia Display. In
addition, the code is indicated via LED's on the outdoor unit control board.
# If more than two troubles occur simultaneously, the lower number of error code is displayed first.
# After an error occurs, if error is released, error LED is also released simultaneously
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