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Hitachi 2023 Air Conditioner 2-Digit Error Code Chart
+ Error Code 01: Activation of safety devices in indoor units.
+ Error Code 02: Activation of safety devices in outdoor units.
+ Error Code 03: Abnormal communication between indoor and outdoor units.
+ Error Code 04: Unusual transmission between inverters and outdoor PCB1 and ISPM.
+ Error Code 05: Abnormal operation of Hitachi air conditioner due to incorrect phase selection signal.
+ Error Code 06: Abnormal operation of Hitachi air conditioner due to incorrect phase selection signal.
+ Error Code 07: Excessive steam discharge (FSVNE).
+ Error Code 08: High discharge air temperature at the top of the compressor chamber.
+ Error Code 09: Activation of protective devices for outdoor fan motor for FSN (E) _FXN (E).
+ Error Code 11: Unusual operation of the electric heater for indoor air temperature in (air inlet electric heater).
+ Error Code 12: Unusual operation of the electric heater for air temperature in the indoor exhaust (air outlet electric heater).
+ Error Code 14: Excessive steam discharge at the temperature of the combustion air pipe (indoor).
+ Error Code 15: Unusual operation of the electric heater for outdoor fresh air (Econofresh).
+ Error Code 19: Activation of protective devices for indoor fan motor (RCI-Model).
+ Error Code 21: Unusual operation of the high-pressure sensor for outdoor units.
+ Error Code 22: Unusual operation of the electric heater for outdoor temperature (surrounding outdoor ambient electric heater).
+ Error Code 23: Unusual operation of the electric heater for exhaust air temperature on top of the compressor chamber.
+ Error Code 24: Unusual operation of the electric heater for boiling temperature during heating.
+ Error Code 26: Unusual operation of the electric heater for suction air temperature (suction compressor electric heater FSVNE).
+ Error Code 29: Unusual operation of the low-pressure sensor for outdoor units.
+ Error Code 30: Incorrect wiring system connection (FXN (E) series only).
+ Error Code 31: Incorrect capacity setting or mismatch between indoor and outdoor units.
+ Error Code 32: Unusual operation in the transmission of different indoor units.
+ Error Code 35: Incorrect number of indoor units set.
+ Error Code 36: Incorrect combination of indoor units.
+ Error Code 39: Unusual operation of the current running at constant speed compressor.
+ Error Code 43: Activation to protect the system from low compression ratio.
+ Error Code 44: Activation to protect the system from excessively high suction pressure.
+ Error Code 45: Activation to protect the system from excessively high discharge pressure.
+ Error Code 47: Activation to protect the system from excessively low discharge pressure.
+ Error Code 51: Unusual operation of the current transformer (0a detection).
+ Error Code 52: Activation to protect the inverter from immediate overcurrent (1).
+ Error Code 53: Activation to protect ISPM.
+ Error Code 54: Increase in the temperature of the inverter fan.
+ Error Codes 56, 57, 58: Unusual operation of the fan motor protection.
+ Error Code 96: Unusual operation of the resistance for KPI (room temperature resistor).
+ Error Code 97: Unusual operation of the resistance for KPI (outdoor temperature resistor).
Some other errors on Hitachi air conditioners
In addition to common errors in the error code table above, when using Hitachi air conditioners, users may encounter some other errors. For these errors, external signs cannot be relied upon for identification as they are related to internal technical specifications.
Therefore, users should contact technical support staff for assistance in repairing. In many cases, replacement of components may be necessary to ensure the air conditioner's operational capability.
Some tips for using Hitachi air conditioners to minimize errors
Most errors on Hitachi air conditioners occur due to incorrect device usage and improper hygiene. Some notes below may help reduce errors on Hitachi air conditioners:
+ Learn to understand the functions and modes on the Hitachi air conditioner to use it correctly.
+ When the air conditioner reports an error, you should stop using it and check the error to determine the cause and fix it immediately.
+ If you have no experience with air conditioners, you should call the warranty center or a professional air conditioner repairman. Do not attempt to repair it yourself as it may worsen the damage.
+ Perform regular cleaning and maintenance for Hitachi air conditioners every 3-6 months.
Above is the error code table with 2 digits for Hitachi air conditioners – updated for 2023, the latest that we have compiled. We hope it will be useful for you when using Hitachi's air conditioning products!
