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43
Alarm
Code
Malfunction
Reason
36
Incorrect of Indoor Unit Combination
Outdoor Unit, Indoor Machine Different Tier, Brand Exception
Combination
38
Abnormality of Picking up Circuit for
Protection in Outdoor Unit
Failure of Protection Detecting Device
(Incorrect Wiring of Outdoor PCB)
3E
Combination Problem between Inverter PCB and
Outdoor PCB
Incorrect Combination between Inverter PCB and Outdoor PCB
43
Activation of Pressure Ratio Decrease Protection
Device
Defective Compression (Failure of Compressor of Inverter, Loose
Power Supply Connection)
44
Activation of Low Pressure Increase
Protection Device
Overload at Cooling, High Temperature at Heating, Expansion Valve
Locking (Loose Connector)
45
Activation of High Pressure Increase
Protection Device
Overload Operation (Clogging, Short-Pass), Pipe Clogging, Excessive
Refrigerant, Inert Gas Mixing
47
Activation of Low Pressure Decrease Protection
Device (Vacuum Operation Protection)
Insufficient Refrigerant, Refrigerant Piping, Clogging, Expansion Valve
Locking at Open Position (Loose Connector)
48
Activation of Inverter Overcurrent
Protection Device
Overload Operation, Compressor Failure
51
Problem with Inverter Current Sensor
Current Sensor Failure.
53
Inverter Error Signal Detection
Driver IC Error Signal Detection (Protection for Overcurrent, Low
Voltage, Short Circuit)
54
Abnormality of Inverter Fin Temperature
Abnormal Inverter Fin Thermistor,
Heat Exchanger Clogging, Fan Motor Failure
55
Inverter Failure
Inverter PCB Failure
57
Activation of Fan Controller Protection
Driver IC Error Signal Detection (Protection for Overcurrent, Low
Voltage, Short Circuit), Instantaneous Overcurrent
5A
Abnormality of Fan Controller Fin Temperature
Fin Thermistor Failure, Heat Exchanger Clogging, Fan Motor Failure
5b
Activation of Fan Controller Overcurrent
Protection
Fan Motor Failure.
5C
Problem with Fan Controller Sensor
Failure of Current Sensor (Instantaneous Overcurrent, Increase of Fin
Temperature, Low Voltage, Ground Fault, Step-Out)
(b0)
Indoor Models and Capacity is Set Incorrectly
Compressor damage alarm occurred three times within 6 hours
(b1)
Incorrect Outdoor Unit Address No. or Unit
Number Setting
Over 64 Number is Set for Address or Refrigerant Cycle.
(b2)
Abnormality of EEPROM
(b3)
Incorrect of Outdoor Unit Combination
Outdoor Unit, Indoor Machine Different Tier, Brand Exception
Combination
b5
Incorrect Indoor Unit Connection No. Setting
More than 18, Non-Corresponding to H-LINK II Units are Connected
to One System.
(b6)
Indoor Fan Controller Communication Error
(b7)
Indoor -2 Fan with Controller Communication
Error
(bF)
The Number of Software Control Board
Connections is Abnormal
EE
Compressor Protection Alarm (It is cannot be
reset from remote controller)
If the alarms (02; 07; 08; 43; 44; 45; 47) occur three times within 6
hours, the alarm code appears.
A1
Noise Filter Board is Abnormal
Noise Filter Board is Abnormal
●
When the alarm codes in the brackets have been appeared, they are presented that the malfunctions are from
the indoor unit.