Si12-308
Service Diagnosis 165
Part 6
Part 6Part 6
Part 6
Service Diagnosis
Service DiagnosisService Diagnosis
Service Diagnosis
1. Caution for Diagnosis..........................................................................166
1.1 Troubleshooting with the Operation Lamp ...........................................166
2. Problem Symptoms and Measures .....................................................168
3. Service Check Function ......................................................................169
4. Code Indication on the Remote Controller ..........................................170
4.1 Error Codes and Description of Fault ...................................................170
5. Troubleshooting ..................................................................................171
5.1 Indoor Units ..........................................................................................171
5.2 Outdoor Units .......................................................................................172
5.3 Indoor Unit PCB Abnormality ...............................................................173
5.4 Freeze-up Protection Control or High Pressure Control.......................174
5.5 Fan Motor (DC Motor) or Related Abnormality.....................................176
5.6 Thermistor or Related Abnormality (Indoor Unit)..................................178
5.7 Shutter Drive Motor / Shutter Limit Switch Abnormality .......................179
5.8 Signal Transmission Error (between Indoor and Outdoor Units)..........180
5.9 Unspecified Voltage (between Indoor and Outdoor Units)...................181
5.10 Freeze-up Protection Control ...............................................................182
5.11 OL Activation (Compressor Overload) .................................................184
5.12 Compressor Lock .................................................................................185
5.13 DC Fan Lock ........................................................................................186
5.14 Input Over Current Detection ...............................................................187
5.15 Four Way Valve Abnormality................................................................189
5.16 Discharge Pipe Temperature Control...................................................191
5.17 Position Sensor Abnormality ................................................................192
5.18 CT or Related Abnormality ...................................................................193
5.19 Thermistor or Related Abnormality (Outdoor Unit)...............................195
5.20 Electrical Box Temperature Rise..........................................................197
5.21 Radiation Fin Temperature Rise ..........................................................199
5.22 Output Over Current Detection.............................................................201
5.23 Insufficient Gas.....................................................................................203
5.24 Low-voltage Detection..........................................................................205
5.25 Anti-icing Function in Other Rooms / Unspecified Voltage
(between Indoor and Outdoor Units) ....................................................206
6. Check ..................................................................................................207
6.1 How to Check .......................................................................................207
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