ESIE15-13B
Service Diagnosis 95
Part 5
Service Diagnosis
1. Maintenance Inspection .......................................................................97
1.1 Overview ...............................................................................................97
2. Symptom-based Troubleshooting ........................................................99
2.1 Overview ...............................................................................................99
2.2 Equipment does not Operate ..............................................................100
2.3 Indoor Unit Fan Operates, but Compressor does not Operate ...........102
2.4 Cooling / Heating Operation Starts but Stops Immediately .................104
2.5 After Unit Shuts Down, It cannot be Restarted for a While .................105
2.6 Equipment Operates but does not Provide Cooling ............................107
2.7 Equipment Operates but does not Provide Heating ............................109
2.8 Equipment Discharges White Mist ......................................................111
2.9 Equipment Produces Loud Noise or Vibration ....................................112
2.10 Equipment Discharges Dust ................................................................113
2.11 Remote Controller LCD Displays "88" .................................................114
2.12 Swing Flap does not Operate ..............................................................115
3. Troubleshooting by LED Indications ..................................................117
3.1 Troubleshooting by LED on the Indoor Unit ........................................117
3.2 Troubleshooting by LED on Outdoor Unit PCB ...................................117
4. Troubleshooting by Remote Controller ..............................................118
4.1 Procedure of Self-diagnosis by Remote Controller .............................118
4.2 Error Codes and Description ...............................................................122
4.3 Safety Devices ....................................................................................123
4.4 Indoor Unit PCB Abnormality ..............................................................124
4.5 Drain Water Level System Abnormality ...............................................125
4.6 Indoor Unit Fan Motor Abnormality .....................................................127
4.7 Capacity Setting Abnormality ..............................................................128
4.8 Transmission Error (between Indoor Unit PCB and Adaptor PCB) .....129
4.9 Thermistor Abnormality .......................................................................131
4.10 Humidity Sensor System Abnormality .................................................132
4.11 Malfunction of Motion Sensor / Floor Temperature Sensor .................133
4.12 Remote Controller Thermistor Abnormality .........................................138
4.13 Outdoor Unit PCB Abnormality ............................................................139
4.14 High Pressure Abnormality (Detected by the High Pressure Switch) ..140
4.15 Actuation of Pressure Sensor ..............................................................142
4.16 Compressor Motor Lock ......................................................................144
4.17 Outdoor Unit Fan Motor Abnormality ...................................................145
4.18 Electronic Expansion Valve Abnormality .............................................147
4.19 Discharge Pipe Temperature Control ..................................................150
4.20 High Pressure Switch System Abnormality .........................................152
4.21 Low Pressure Switch System Abnormality ..........................................153
4.22 Thermistor System Abnormality ..........................................................154
4.23 Outdoor Unit PCB Abnormality ............................................................155
4.24 Radiation Fin Temperature Rise .........................................................157
4.25 Output Overcurrent Detection .............................................................159
4.26 Electronic Thermal (Time Lag) ............................................................161
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