Hitachi
Error Codes
|
Trouble
|
P01
|
Pressure ratio protection control
|
P02
|
High pressure increase protection
|
P03
|
Inverter current protection
|
P04
|
Inverter fin temperature increase protection
|
P05
|
Discharge gas temperature increase protection at the upper
part of the compressor
|
P06
|
Low pressure decrease protection
|
P09
|
High pressure decrease protection
|
P0A
|
Demand current protection control
|
P0d
|
Low pressure increase protection
|
P11
|
Pressure ratio decrease retry
|
P12
|
Low pressure increase retry
|
P13
|
High pressure increase retry
|
Code: 01
Content of
Abnormality: Tripping of Protection Device
Leading
Cause: Failure of Fan Motor, Drain Discharge, PCB, Relay
Code: 02
Content of
Abnormality: Tripping of Protection Device
Leading Cause:
Activation of PSH
Code: 03
Content of
Abnormality: Abnormality between Indoor (or outdoor) and Outdoor (or
Indoor)
Leading Cause:
Incorrect Wiring. Failure of PCB. Tripping of Fuse. Power Supply OFF.
Code: 04
Content of
Abnormality: Abnormality between Inverter and Control PCB
Leading Cause: Failure
in Transmission between PCBs
Code: 05
Content of
Abnormality: Abnormality of Power Source Wiring
Leading
Cause: Reverse Phase Incorrect Wiring
Code: 06
Content of Abnormality: Voltage
Drop by Excessively Low or High Voltage to Outdoor Unit
Leading
Cause: Voltage Drop of Power Supply, Incorrect Wiring or Insufficient
Capacity of Power Supply Wiring
Code: 07
Content of
Abnormality: Decrease in Discharge Gas Superheat
Leading Cause:
Excessive Refrigerant Charge, Expansion Valve Open Lock
Code: 08
Content of
Abnormality: Increase in Discharge Gas Temperature
Leading
Cause: Insufficient Refrigerant. Ref. Leakage, Clogging or Expansion Valve
Close Lock
Code: 09
Content of Abnormality: Tripping
of Protection Device
Leading
Cause: Failure of Fan Motor
Code: 11
Content of
Abnormality: Inlet Air Thermistor
Leading
Cause: Failure of Thermistor, Sensor, Connection
Code: 12
Content of
Abnormality: Outlet Air Thermistor
Leading Cause: Failure
of Thermistor, Sensor, Connection
Code: 13
Content of
Abnormality: Freeze Protection Thermistor
Leading
Cause: Failure of Thermistor, Sensor, Connection
Code: 14
Content of
Abnormality: Gas Piping Thermistor
Leading
Cause: Failure of Thermistor, Sensor, Connection
Code: 19
Content of Abnormality:
Failure of Fan Motor
Leading
Cause: Failure of Fan Motor
Code: 21
Content of Abnormality:
High Pressure Sensor
Leading Cause: Failure
of Thermistor, Sensor, Connection
Code: 22
Content of Abnormality:
Outdoor Air Thermistor
Leading Cause: Failure
of Thermistor, Sensor, Connection
Code: 23
Content of Abnormality:
Discharge Gas Thermistor on Comp
Leading Cause: Failure
of Thermistor, Sensor, Connection
Code: 24
Content of Abnormality:
Evaporating Thermistor
Leading Cause: Failure
of Thermistor, Sensor, Connection
Code: 29
Content of Abnormality:
Low Pressure Sensor
Leading Cause: Failure
of Thermistor, Sensor, Connection
Content of
Abnormality: Incorrect Wiring Connection
Leading
Cause: Incorrect Wiring Connection between Outdoor Unit, CH Unit and
Indoor Unit
Code: 31
Content of
Abnormality: Incorrect Setting of Outdoor and Indoor Unit
Leading
Cause: Incorrect Setting of Capacity Code
Code: 32
Content of
Abnormality: Abnormal Transmission of Other Indoor Unit
Leading
Cause: Failure of Power Supply, PCB in Other Indoor Unit. Failure of Other
Indoor Unit of the Same Refrigerant Cycle.
Code: 35
Content of
Abnormality: Incorrect Setting in Indoor/Outdoor Unit No.
Leading
Cause: Existence of the same Indoor Unit No. in the same refrigerant cycle
Code: 38
Content of
Abnormality: Abnormality of Protective Circuit in Outdoor Unit
Leading
Cause: Failure of Indoor Unit PCB. Incorrect Wiring Connection to PCB in
Outdoor Unit
Code: 39
Content of
Abnormality: Abnormality of Running Current at Constant Compressor
Leading
Cause: Overcurrent, Melted Fuse of Failure of Current Sensor
Code: 43
Content of
Abnormality: Pressure Ratio Decrease Protection Activating
Leading
Cause: Failure of Compressor, Inverter
Code: 44
Content of
Abnormality: Low Pressure Increase Protection Activating
Leading
Cause: Overload to Indoor in Cooling, High Temperature of Outdoor Air in
Heating Expansion Valve Open Lock
Code: 45
Content of
Abnormality: High Pressure Increase Protection Activating
