Troubleshooting SiBE12-522174 Service Diagnosis5.2 Outdoor Units4: ON, 1: OFF, 5: BlinksGreen : Flashes when in normal conditionRed : OFF in normal condition- : Not used for troubleshooting∗ : Varies depending on the cases.Note: 1. The indications in the parenthesis ( ) in the remote controller display column are displayedonly when system-down occurs.2. When a sensor error occurs, check the remote controller display to determine which sensoris malfunctioning.If the remote controller does not indicate the error type, conduct the following operation.*Turn the power switch off and back on again. If the same LED indication appears againimmediately after the power is turned on, the fault is in the thermistor.*If the above condition does not result, the fault is in the CT.3. The indoor unit error indication may take the precedence in the remote controller display.Outdoor Unit LED Indication Indication onthe remotecontrollerDescription of The FaultReferencePageGreen RedA 1 2 3 45 3 3 3 3 00 Outdoor unit in normal condition(Conduct a diagnosis of the indoor unit.) —UA Unspecified voltage (between indoor and outdoor units) 211UH Anti-icing function in other rooms 2115 3 3 4 4 (U0) Insufficient gas 2085 4 3 3 4 U2 Low-voltage detection 2105 4 3 4 4 A5 Freeze-up protection control 1855 4 3 4 3 (E5) OL activation (compressor overload) 1875 3 4 4 3 (E6) Compressor lock 1885 4 4 4 4 E7 DC fan lock 1895 3 4 3 4 E8 Input over current detection 1905 4 3 3 3 EA Four way valve abnormality 1925 4 3 4 3 F3 Discharge pipe temperature control 1945 4 3 4 4 F6 High pressure control in cooling 1955 4 4 3 3 H6 Position sensor abnormality 197H9 Outdoor air thermistor or related abnormality 200J3 Discharge pipe thermistor or related abnormality 200J6 Heat exchanger thermistor or related abnormality 200J8 Liquid pipe thermistor or related abnormality 200J9 Gas pipe thermistor or related abnormality 200P4 Radiation fin thermistor or related abnormality 2005 4 4 3 3 H8 CT or related abnormality 1985 4 4 3 4 L3 Electrical box temperature rise 2025 3 3 3 4 L4 Radiation fin temperature rise(Protection of driver overheating) 2045 3 3 4 3 L5 Output over current detection 206
