Specifications

SiUS12-928_A
Table of Contents iv
5.14 Input Overcurrent Detection ..................................................................... 119
5.15 Four-Way Valve Abnormality (18 Class) .................................................. 121
5.16 Discharge Pipe Temperature Control....................................................... 123
5.17 High Pressure Control in Cooling ............................................................. 124
5.18 Compressor Sensor System Abnormality (24/32 Class) .......................... 126
5.19 Position Sensor Abnormality .................................................................... 128
5.20 CT or Related Abnormality ....................................................................... 131
5.21 Thermistor or Related Abnormality (Outdoor Unit)................................... 133
5.22 Electrical Box Temperature Rise.............................................................. 135
5.23 Radiation Fin Temperature Rise .............................................................. 138
5.24 Output Overcurrent Detection .................................................................. 141
5.25 Refrigerant Shortage ................................................................................ 143
5.26 Low-voltage Detection or Over-voltage Detection.................................... 146
5.27 Signal Transmission Error (on Outdoor Unit PCB)
(24/32 Class) ............................................................................................ 147
5.28 Unspecified Voltage (between Indoor and Outdoor Units) / Anti-icing Func-
tion in Other Rooms ................................................................................ 148
6. Check ......................................................................................................149
6.1 How to Check ........................................................................................... 149
Part 7
Removal Procedure ....................................................................... 159
1. Outdoor Unit – 2MXS18GVJU ................................................................161
1.1 Removal of the Outer Panels ................................................................... 161
1.2 Removal of the Electrical Box .................................................................. 162
1.3 Removal of the PCB................................................................................. 166
1.4 Removal of the Fan Motor........................................................................ 170
1.5 Removal of the Sound Blanket................................................................. 171
1.6 Removal of the Coils and Thermistors ..................................................... 173
1.7 Removal of the Four-Way Valve and Defrost Solenoid Valve Procedure 175
1.8 Removal of the Compressor..................................................................... 177
2. Outdoor Unit – 3MXS24JVJU / 4MXS32GVJU .......................................179
2.1 Removal of the Outer Panels ................................................................... 179
2.2 Removal of the Electrical Box .................................................................. 193
2.3 Removal of the PCB................................................................................. 199
2.4 Removal of the Fan Motor........................................................................ 204
2.5 Removal of the Coils and Thermistors ..................................................... 205
2.6 Removal of the Sound Blanket................................................................. 211
2.7 Removal of the Compressor..................................................................... 214