Model reference
LG FMN1860NT
Air Conditioner
1 document15 error codes4 service modes
Available documentation
Service Manual
- Free Joint Multi Type Air Conditioner SVC MANUAL115 pg
MyPros+ Max
Diagnose your LG FMN1860NT.
- Step-by-step diagnostics from the service manual
- Test values, resistance specs, and wiring references
- Verified part numbers when replacement is needed
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Error codes (15)
CodeMeaning
1Indoor thermistor open/short circuit detected.10DC low voltage error detected in outdoor unit.11High voltage / power error / condenser temperature error.12Connecting wire or pipe error.13Excessive capacity error.14Discharge temperature error.15Incorrect wiring of compressor phases (U, V, W).2Outdoor thermistor open/short circuit detected.3Wired remote controller communication error.4Drain pump error.5Poor communication between indoor and outdoor units.6Fire alarm response.7Difference operation error (operational mismatch).8CT (current transformer) current error.9IPM (Intelligent Power Module) error / DC peak current error.Service modes (4)
- Forced OperationSet the slide switch on the main unit to the forced operation position, or switch from remote…
- Test Operation (Cassette Type)Press the forced operation button for 5 seconds.
- Test Operation (Convertible Type)Press the forced operation switch for approximately 3 seconds
- Test Operation (Room Type)Press the timer cancel button five times continuously.
Full entry steps, exit procedures, and test sequences are available in Max.
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