Model reference
Lg Samsung RHF-050EB
Air Conditioner
12 error codes5 service modes
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Error codes (12)
CodeMeaning
E121Indoor temperature sensor error (short or open circuit).E139CO2 sensor error (short or open circuit); CO2 input pulse maintains High or Low…E153EEPROM error (EEPROM error count >= 5 failures during read/write test).E201MASTER ERV tracking errorE202System failure by communication errorE221Outdoor temperature sensor error (short or open circuit).E561Supply air (SA) fan motor errorE562Exhaust air (EA) fan motor errorE601Communication error between the wired remote control and the ventilatorE606COM1/COM2 cross installation errorE652Communication error by installing COM1 dual MASTERE654Damper errorService modes (5)
- Air Volume Control Trial OperationPress K2 button on the main PCB one time to initiate air volume control trial operation to check…
- Heat Exchange Trial OperationPress K1 button on the main PCB one time to initiate heat exchange trial operation to check whether…
- ResetPress K3 button on the main PCB one time.
- View Mode (Data Display)Press K4 button on the main PCB repeatedly. Each press cycles through data
- Wired Remote Control RetrackingPress both Wind Strength Control Button and Operation Selection Button on the wired remote control…
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