Specifications

SiUS12-928_A
iii Table of Contents
Part 5
Operation Manual ................................................................ 61
1. System Configuration................................................................................63
2. Duct-Free System .....................................................................................64
2.1 Remote Controller ...................................................................................... 64
2.2 AUTO · DRY · COOL · HEAT · FAN Operation ......................................... 66
2.3 Adjusting the Airflow Direction.................................................................... 68
2.4 INTELLIGENT EYE Operation ................................................................... 70
2.5 POWERFUL Operation .............................................................................. 72
2.6 OUTDOOR UNIT Quiet Operation ............................................................. 73
2.7 HOME LEAVE Operation ........................................................................... 74
2.8 TIMER Operation ....................................................................................... 76
2.9 Note for Multi System ................................................................................. 78
3. Slim Duct Built-In System..........................................................................80
3.1 Remote Controller ...................................................................................... 80
3.2 AUTO / DRY / COOL / HEAT / FAN Operation .......................................... 81
3.3 POWERFUL Operation .............................................................................. 83
3.4 OUTDOOR UNIT QUIET Operation........................................................... 84
3.5 HOME LEAVE Operation ........................................................................... 85
3.6 TIMER Operation ....................................................................................... 87
Part 6
Service Diagnosis................................................................ 89
1. Caution for Diagnosis................................................................................91
1.1 Troubleshooting with LED .......................................................................... 91
2. Problem Symptoms and Measures ...........................................................93
3. Service Check Function ............................................................................94
3.1 ARC452 Series Remote Controller ............................................................ 94
3.2 ARC433 Series Remote Controller ............................................................ 97
4. Code Indication on the Remote Controller ..............................................100
4.1 Error Codes and Description of Fault ....................................................... 100
5. Troubleshooting ......................................................................................101
5.1 Indoor Unit................................................................................................ 101
5.2 Outdoor Unit ............................................................................................. 102
5.3 Indoor Unit PCB Abnormality ................................................................... 103
5.4 Freeze-up Protection Control or Heating Peak-cut Control...................... 104
5.5 Fan Motor or Related Abnormality ........................................................... 106
5.6 Thermistor or Related Abnormality (Indoor Unit)...................................... 109
5.7 Signal Transmission Error (between Indoor and Outdoor Units).............. 110
5.8 Unspecified Voltage (between Indoor and Outdoor Units) ....................... 112
5.9 Anti-icing Function.................................................................................... 113
5.10 Outdoor Unit PCB Abnormality (24/32 Class) .......................................... 115
5.11 OL Activation (Compressor Overload) ..................................................... 116
5.12 Compressor Lock ..................................................................................... 117
5.13 DC Fan Lock ............................................................................................ 118