Hitachi Airconditioner error codes

Hitachi Inverter AC Error Codes

Hitachi Inverter AC Error Codes

Error Code Description Solution
E1 Indoor/outdoor unit communication error Check communication wiring between indoor and outdoor units. Reconnect or replace wires if needed.
E2 Indoor unit coil temperature sensor error Inspect the coil temperature sensor in the indoor unit. Replace it if defective.
E3 High pressure protection error Check refrigerant levels, clean the outdoor unit, and ensure proper ventilation.
E4 Outdoor unit temperature sensor error Inspect the temperature sensor in the outdoor unit. Replace it if faulty.
E5 Compressor overload protection Check for overheating in the compressor. Ensure the unit is properly ventilated and refrigerant levels are correct.
P0 Inverter module protection Check the inverter module for faults. Reset or replace the module if needed.
P1 Voltage protection (high or low voltage) Ensure the power supply is stable and within acceptable voltage range. Use a voltage stabilizer if necessary.
P2 Compressor temperature sensor error Inspect the temperature sensor attached to the compressor. Replace it if faulty.
P3 Outdoor ambient temperature sensor error Check the ambient temperature sensor outside the unit. Replace it if defective.
P4 Compressor drive error Inspect the compressor drive components. Reset or replace as necessary.
F0 Indoor fan speed error Check the indoor fan motor for faults. Repair or replace if needed.
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