10 Troubleshooting
Troubleshooting procedure
SMGB0136 rev.0 - 07/2021
262
Code Category Content of Abnormality Leading Cause
57
Fan Controller
Activation of Fan Controller Protection
Driver IC Error Signal Detection (Protection for Overcurrent,
Voltage Decrease, Short Circuit), Instantaneous Overcurrent
5A
Abnormality of Fan Controller Fin
Temperature
Fin Thermistor Failure, Heat Exchanger Clogging, Fan
Motor Failure
5b Activation of Overcurrent Protection Fan Motor Failure
5C Abnormality of Fan Controller Sensor
Failure of Current Sensor (Instantaneous Overcurrent,
Increase of Fin Temperature, Voltage Decrease, Grand
Fault, Step-Out)
88 Outdoor unit
Alarm of abnormality of fan or compressor
unit
The fan or compressor driver do not transfer and
identicationcode
A1 External Input Detection of External Abnormality Input Signal by External Abnormality Detection Setting
b0
Indoor Unit
Incorrect Setting of Unit Model Code Incorrect Setting of Indoor Unit Model
b1
Incorrect Setting of Unit and Refrigerant
Cycle Number
64 or More Number is Set for Address or Refrigerant Cycle
b2 Abnormality of EEPROM EEPROM failure, Incorrect Data of EEPROM
b3
Wrong combination of indoor unit and
remote control switches
Wrong combination of indoor unit and remote control
switches
b5 Incorrect Indoor Unit Number Setting
There are 17 or More Non-Corresponding to H-LINK II Units
are Connected to One System.
b6
Abnormal Communication between
Indoor PCB and Indoor Fan Controller
Communication Failure, Disconnected Communication
Cable, Abnormal Connection
b7
Transmission abnormality between the
indoor and the PCB for 2 fans
Transmission abnormality between the indoor and the
PCBfor 2 fans
bF
Abnormality in the number of
connectedsub-PCB
Abnormality in the number of connected sub-PCB
EE Compressor
Compressor Protection Alarm
(It can not be reset from Wired Controller)
This alarm code appears when the following alarms* occurs
three times within 6 hours.
*02, 07, 08, 39, 43 to 45, 47
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