April 29, 2020

Hitachi air conditioner error codes| Solution

Hitachi ac error code|Solution

Hitachi ac error Code: -01
Abnormality: activating safety device (float switch)
Main reasons: – Fan motor failure, drain discharge, PCB, relay, float switch activated.

Error Code: -02
Abnormality: – Activation of protection device (high pressure reduction)
Main reasons: – Activation of PSH in power supply phase, shut down motor, abnormal operation.

Error Code: -03
Abnormality: – Inequality between indoor (or outdoor) and outdoor (or indoor) units
Main reason: – Incorrect wiring. Loose terminals, PCB failure. Tripping of fuses. Power supply turned off.

Error Code: -04
Abnormality: – Abnormal operation between inverter and control PCB
Main reason: – Transmission failure between inverter PCB

Error Code: -05
Abnormality:– Unusual power supply
Main reason: – Power source with unusual wave pattern.

Error Code: -06
Abnormality:– Voltage drop due to excessive or high voltage in external unit
Main reason: – Voltage drop in power supply. Incorrect wiring or insufficient capacity of power supply wires.

Error Code: -07
Abnormality:– Drop discharge gas into overheating
Main reason: – Excessive refrigerant charge. Expansion valve lock open.

Error Code: -08
Abnormality: – Increase in temperature of discharge gas
Main reasons: – insufficient refrigerant charge, refrigerant leakage. Expansion valve closed or filled.

Error Code: -11
Abnormality: – Inlet air thermistor
main reason:-

Error Code: -12
Abnormality:– outlet air thermistor anti freeze thermistor
Main reason: – Thermistor, sensor, connection failure.

Error Code: -14
Abnormality:– Gas pipe thermistor
main reason:-

Error Code: -19
Abnormality:– Safety device for fan motor turns on
Main reason: – fan motor failure

Error Code: -20
Abnormality:– compressor thermistor
main reason:-

Error Code: -21
Abnormality:– Unnaturality of high pressure sensor air thermistor
Main reason: – Thermistor, sensor, connection failure.

Error Code: -24
Abnormality:– evaporation thermistor
main reason:-

Error Code: -31
Abnormality:– Wrong setting of outdoor and indoor units
Main reason: – Incorrect setting of capability code.

Error Code: -35
Abnormality:– Incorrect setting of indoor unit number
Main reason: – Repeat of indoor unit number.

Error Code: -38
Abnormality:– Inequality of protective circuit in external unit
Main reasons: – Failure of indoor unit PCB; Incorrect wiring; Connection to indoor unit PCB.

Error Code: -41
Abnormality:– Cold overload (possible activation of high pressure device)
Main reason: – O.U. Pipe thermistor tempered, exceeds 55 ° C and compressor top temp., 95 ° C, O.U. Safety device activated.

Hitachi ac error code: -42
Abnormality: – heat overload (high pressure device can be activated)
Main reason: – If I.U. Freeze protection thermistor temper, exceeds 55 ° C and compressor top temp., 95 ° C, O.U. The protec- tion device is activated.

Hitachi ac error code: -45
Abnormality:– High pressure activation enhances the protection device
Main reason: – If the compressor’s discharge pressure (PD) is more than 3.8MPa for 1 minute.

Error Code: -47
Abnormality: – activation of safety device for low pressure drop
Main reason: – Stop-ature (Temp <-35 ° C) is activated 3 times in an hour due to excessive decrease in evaporating temperature, motor stops in heating mode.

Error Code: -48
Abnormality:– activation of over-protection
Main reason: – overload, overload. DIP IPM, IPM or PCB 2 failure, heat exchanger filled, closed compressor.

Error Code: -51
Abnormality:– inverter current sensor
Main reason: – Incorrect wiring of current sensor. Failure of control PCB, DIP IPM, IPM or PCB2.

Error Code: -53
Abnormality:– Activation of transistor module protection device
Main reason: – Failure of DIP IPM or PCB 2 compressor, heat exchanger clogged. Abnormal inverter fin thermistor

Hitachi ac error code: -54
Abnormality:– asymmetry of inverter fin temperature
Main reason: – Heat exchanger filled. Unusual external fan.

Error Code: -55
Abnormality:– Inequality of inverter module
Main reason: – Failure of DIP-IPM, IPM or PCB2.

Hitachi ac error code: -57
Abnormality: – Fan motor abnormality
Main reason: – Broken wire or incorrect wiring between control PCB and inverter PCB. Incorrect wiring or abnormality in fan motor.

Error Code: – EE
Abnormality:– Compressor Security Alarm
Main Cause: – Compressor failure.

Error Code: -b0
Abnormality:– Wrong setting of unit model
Main reason: – No setting of unit model, wrong setting of unit model

Error Code: -B1
Abnormality:– Incorrect unit number setting
Main reason: – More than 64 indoor units, not by setting. Or indoor unit address.

Error Code: -b5
Abnormality:– Incorrect setting of indoor unit number for H-Link type
Main reason: – An indoor unit that does not support H-Link II is set to indoor unit number 16 and above.