Part 7 - Service Diagnosis - Daikin ZQG71~140L7V1B Service Manual

ESIE12-06
1. Maintenance Inspection ......................................................................109
2. Symptom-based Troubleshooting .......................................................111
3. Troubleshooting by LED Indications ...................................................129
4. Troubleshooting by Remote Controller ...............................................130
Service Diagnosis
Service Diagnosis
1.1 Overview ..............................................................................................109
2.1 Overview ..............................................................................................111
2.2 Equipment does not Operate ...............................................................112
2.3 Indoor Unit Fan Operates, but Compressor does not Operate ............114
2.4 Cooling / Heating Operation Starts but Stops Immediately ..................116
2.5 After Unit Shuts Down, It cannot be Restarted for a While ..................117
2.6 Equipment Operates but does not Provide Cooling .............................119
2.7 Equipment Operates but does not Provide Heating .............................121
2.8 Equipment Discharges White Mist .......................................................123
2.9 Equipment Produces Loud Noise or Vibration .....................................124
2.10 Equipment Discharges Dust.................................................................125
2.11 Remote Controller LCD Displays "88" ..................................................126
2.12 Swing Flap does not Operate...............................................................127
3.1 Troubleshooting by LED on the Indoor Unit .........................................129
3.2 Troubleshooting by LED on Outdoor Unit PCB ....................................129
4.1 Procedure of Self-diagnosis by Remote Controller ..............................130
4.2 Error Codes and Description ................................................................134
4.3 Safety Devices .....................................................................................135
4.4 Indoor Unit PCB Abnormality ...............................................................136
4.5 Drain Water Level System Abnormality................................................137
4.6 Indoor Unit Fan Motor Abnormality ......................................................139
4.7 Capacity Setting Abnormality ...............................................................140
4.8 Transmission Error (between Indoor Unit PCB and Adaptor PCB) ......141
4.9 Thermistor Abnormality ........................................................................143
4.10 Humidity Sensor System Abnormality ..................................................144
4.11 Remote Controller Thermistor Abnormality ..........................................145
4.12 Outdoor Unit PCB Abnormality.............................................................146
4.13 High Pressure Abnormality (Detected by the High Pressure
Switch)..................................................................................................147
4.14 Actuation of Pressure Sensor...............................................................151
4.15 Compressor Motor Lock .......................................................................153
4.16 Outdoor Unit Fan Motor Abnormality....................................................154
4.17 Electronic Expansion Valve Abnormality..............................................156
4.18 Discharge Pipe Temperature Control...................................................159
4.19 High Pressure Switch System Abnormality ..........................................161
4.20 Thermistor System Abnormality ...........................................................162
4.21 Outdoor Unit PCB Abnormality.............................................................163
4.22 Radiation Fin Temperature Rise ..........................................................165
4.23 Output Overcurrent Detection ..............................................................167
4.24 Electronic Thermal (Time Lag) .............................................................169
4.25 Stall Prevention (Time Lag)..................................................................171
Part 7
107