HVAC Toolkit
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Hisense Error Codes

Inverter Mini-Splits & Air Conditioners ยท China

Prefixes: E=System/Sensor, F=Sensor/Protection, P=Protection, H=Status

E-Series (System/Sensor Errors)

Code Description Possible Cause Action
E0 EEPROM error EEPROM data fault Reset power; replace PCB if persists
E1 Indoor/outdoor communication error Signal wiring fault Check communication wiring
E2 Zero crossing error Power supply issue Check power supply quality
E3 Fan speed error Indoor fan abnormal Check fan motor and circuit
E4 Room temperature sensor fault T1 sensor open/short Check room temperature sensor
E5 Evaporator sensor fault T2 sensor open/short Check evaporator sensor
E6 Condenser sensor fault Outdoor coil sensor fault Check condenser sensor
E8 Duplex communication error Address conflict Reset unit addresses
EC Refrigerant leak detected Leak sensor triggered Check for leaks, repair, recharge

F-Series (Sensor/Protection Codes)

Code Description Possible Cause Action
F0 Outdoor EEPROM error Outdoor EEPROM fault Reset; replace outdoor PCB if needed
F1 Outdoor ambient sensor fault T4 thermistor failure Check outdoor ambient sensor
F2 Condenser sensor fault Condenser thermistor failure Check condenser temperature sensor
F3 Discharge sensor fault Discharge thermistor failure Check discharge temperature sensor
F4 Suction sensor fault Suction thermistor failure Check suction line sensor

P-Series (Protection Codes)

Code Description Possible Cause Action
P0 IPM module protection Inverter overcurrent Check IPM module and compressor
P1 Voltage protection Voltage out of range Check power supply voltage
P2 Compressor overheating Compressor discharge temp high Check superheat, charge, airflow
P3 Overcurrent protection System drawing excess current Check compressor and wiring
P4 Inverter drive error Drive board fault Check inverter drive board
P5 DC fan motor fault Fan motor feedback error Check outdoor DC fan motor

Hisense Troubleshooting Tips

Before Calling for Service

  • Turn off unit, wait 5 minutes, then restart - some errors auto-reset
  • Check and clean air filters - many errors caused by restricted airflow
  • Verify power supply voltage is within specification
  • Check circuit breaker and disconnect switch
  • Note the exact error code and when it occurs for technician

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