Si-95 Diagnosis by Malfunction CodeTroubleshooting Inverter K Series 751. Diagnosis by Malfunction Code1.1 Diagnosis by Malfunction CodeMalfunction code Malfunction contents Fan operation PageA0 Indoor unit: Error of external protection device 77A1 Indoor unit: PC board defect 78A3 Indoor unit: Malfunction of drain level control system (33H) 8 79A6 Indoor unit: Fan motor (M1F) lock, overload 80A7 Indoor unit: Malfunction of swing flap motor (M1S) 8 81A9 Indoor unit: Malfunction of moving part of electronic expansion valve(Y1E)8 82AF Indoor unit: Drain level above limit 83AJ Indoor unit: Malfunction of capacity determination device 84C4 Indoor unit: Malfunction of thermistor (R2T) for liquid pipe 8 85C5 Indoor unit: Malfunction of thermistor (R3T) for gas pipes 8 86C9 Indoor unit: Malfunction of thermistor (R1T) for air inlet 8 87CJ Indoor unit: Malfunction of thermostat sensor in remote controller 8 88E0 Outdoor unit: Actuation of safety device 89E1 Outdoor unit: PC board defect 90E3 Outdoor unit: Actuation of high pressure switch 91E4 Outdoor unit: Actuation of low pressure switch 8 92E9 Outdoor unit: Malfunction of moving part of electronic expansionvalve (Y1E)8 93F3 Outdoor unit: Abnormal discharge pipe temperature 8 94H9 Outdoor unit: Malfunction of thermistor for outdoor air (R1T) 8 95J3 Outdoor unit: Malfunction of discharge pipe thermistor (R3T) 8 96J5 Outdoor unit: Malfunction of thermistor (R4T) for suction pipe 8 97J6 Outdoor unit: Malfunction of thermistor (R2T) for heat exchanger 8 98JA Outdoor unit: Malfunction of discharge pipe pressure sensor 8 99JC Outdoor unit: Malfunction of suction pipe pressure sensor 8 100JH Outdoor unit: Malfunction of oil temperature thermistor (R5T) 8 101U0 Low pressure drop due to refrigerant shortage or electronicexpansion valve failure8 102U1 Negative phase, open phase 8 103U2 Power supply insufficient or instantaneous failure 8 120U4 Malfunction of transmission between indoor units 8 104U5 Malfunction of transmission between remote controller and indoorunit 105U7 Malfunction of transmission between outdoor units 8 106U8 Malfunction of transmission between main and sub remotecontrollers8 107U9 Malfunction of transmission between indoor and outdoor units orbetween outdoor units in the same system8 108UA Excessive number of indoor unitsImproper combination of indoor and outdoor units (incompatiblerefrigerant), improper number of connected indoor units or remotecontrollers (inappropriate remote controllers), faulty PCB modelsetting (replacement PCB)8 109UC Address duplication of central remote controller 8 110UF Refrigerant system not set, incompatible wiring/piping 8 111UH Malfunction of system, refrigerant system address undefined 8 112The system operates for malfunction codes indicated in black squares, however, be sure tocheck and repair.SI-95.BOOK Page 75 Friday, March 31, 2000 10:59 AM
