Malfunction Code Indication by Outdoor Unit PCB Mini UM S/M102 Troubleshooting3. Malfunction Code Indication by Outdoor Unit PCBTo enter the monitor mode, push theMODE button (BS1) when in“Setting mode 1”.Push the SET button (BS2) and setthe LED display to a setting item.Push the RETURN button (BS3)once to display "First digit" ofmalfunction code.Push the SET button (BS2) once todisplay "Second digit" of malfunctioncode.Push the RETURN button (BS3) andswitches to the initial status of“Monitor mode”.∗ Push the MODE button (BS1) andreturns to “Setting mode 1”.Contents of malfunction MalfunctioncodePush the SET button (BS2) once todisplay "master or slave1 or slave2"and "malfunction location".Detaildescriptionon theright.(V3167)HPS activatedAbnormal PeDetection of INV compressor lockInstantaneous over current of DC fan motorDetection of DC fan motor lockEV1EV2EV3Faulty Ta sensorAbnormal TdFaulty Tdi sensorFaulty Ts sensorFaulty Tb sensorFaulty Tsh sensorFaulty Pc sensorFaulty Pe sensorInverter instantaneous over currentElectronic thermal switch 1Electronic thermal switch 2Out-of-stepSpeed down after startupLightening detectionStall prevention (Current increasing)Stall prevention (Faulty startup)Abnormal wave form in startupOut-of-stepInverter transmission errorImbalance of inverter power supply voltageFaulty thermistor of inverter boxFaulty thermistor of inverter finIncorrect combination of inverter and fan driverGas shortage alarmInsufficient inverter voltageInverter open phase (phase T)Charging error of capacitor in inverter main circuitOver voltageOver current/Over voltage (Hard detection)I/O transmission errorIndoor unit system malfunction in other system orother unit of own systemAbnormal connection with excessive number of indoor unitsConflict of refrigerant type in indoor unitsIncorrect wiring (Auto address error)Malfunction of multi level converter, abnormality inconflict checkAbnormal discharge pressureAbnormal suction pressureCompressor lockOver load, over current,abnormal lock of outdoor unit fan motorMalfunction of electronic expansion valveFaulty sensor of outdoor air temperatureAbnormal discharge pipe temperatureFaulty sensor of discharge pipe temperatureFaulty sensor of suction pipe temperatureFaulty sensor of heat exchanger temperatureFaulty sensor of subcool heat exchanger temperatureFaulty sensor of discharge pressureFaulty sensor of suction pressureDC output over currentElectronic thermal switchStall prevention (Limit time)Transmission error between inverter and outdoor unitOpen phase / Power supply imbalanceFaulty temperature sensor inside swicth boxFaulty temperature sensor of inverter radiation finIncorrect combination of inverter and fan driverGas shortageAbnormal power supply voltageAbnormal SP-PAMAbnormal latch circuitryNo implementation of test-runTransmission error between indoor and outdoor unitTransmission error of other systemErroneous on-site settingFaulty system functionTransmission error in accessory devices, conflictin wiring and piping, no setting for systemE3E4E5E7E9H9F3J3J5J6J9JAJCL5L8L9LCP1P3P4PJU0U2U3U4U9UAUHUF
