LG air conditioners, split systems and other HVAC manuals, parts lists, wiring diagrams as free PDF downloads.

Here we provide free downloadable copies of LG installation and service manuals for heating, heat pump, and air conditioning equipment, or contact information for the manufacturers who can provide that information for nearly all major brands of HVAC equipment.

LG HVAC Systems Manuals & Error Codes

• Contact Information for LG Electronics, Company Website: http://www.lg.com , Singapore & World Wide
  
  Contact an LG Support Representative at 1 800-822-822 (National call Rate), or in Singapore: Call an LG Support Representative at 6512 0555,

LG HVAC Installation & Service Manuals  

• LG H2UC186FA0 Service & Intallation Manual (2007)
• LG H3UC216FA0 Service Manual
• LG H3UC246FA0 Service Manual
• LG MULTI-F / MULTI-F MAX OUTDOOR UNIT INSTALLATION MANUAL [PDF]

LG AC Error Code Decoder

• LG AIR CONDITIONER FAULT CODES [PDF] (2017) includes Cxx codes, Po, Lo, and numeric codes 01-10, HL, CL, Po.
  Excerpt:
  
  C1 or CH1: A fault with the indoor temperature sensor, open or closed circuit
  
  C2 or CH2 2: A fault with the indoor temperature sensor, open or closed circuit
  
  C4 or CH4 4: There’s an issue with the heat sink temperature sensor, open or closed circuit
  
  C5 or CH5 5: The issue is with the communication between indoor and outdoor units
  
  C6 or CH6 6: The inverter DC power circuit is experiencing excessive voltage(can be indoor pipe outlet sensor, or outdoor condenser sensor on some models)
  
  C7 or CH7 7: There’s excessive compressor current present
  
  C8 or CH8 8: The indoor fan has stopped rotating
  
  C9 or CH9 9: The outdoor fan has stopped rotating
  
  CA 10: The discharge temperature has exceeded 130 degrees or there is a fault with the discharge thermistor
  
  
  CC 2 + 1: EEPROM error
  
  
  CD 3 + 1: The inverter module has encountered an error
  
  
  Po: System in Power Mode – this is not a fault
  
  Lo: System in test mode – this is not a fault
  

...

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