SiUS28-902_B
iii
Table of Contents
Test Operation ................................................................. 42
Procedure and Outline ........................................................................... 43
Operation when Power is Turned ON .................................................... 46
2. Outdoor Unit PCB Layout .....................................................................47
3. Field Setting ..........................................................................................48
Field Setting from Remote Controller..................................................... 48
Field Setting from Remote Controller (Indoor Unit)................................ 52
Field Setting from Outdoor Unit ............................................................. 58
Service Diagnosis ............................................................ 71
1. Symptom-based Troubleshooting .........................................................73
2. Troubleshooting by Remote Controller .................................................76
The INSPECTION / TEST Button .......................................................... 76
Self-diagnosis by Wired Remote Controller ........................................... 77
Self-diagnosis by Wireless Remote Controller....................................... 79
Remote Controller Service Mode ........................................................... 82
Error Codes and Description.................................................................. 86
3. Troubleshooting by Indication on the Remote Controller ......................89
External Protection Device Abnormality................................................. 89
Drain Water Level System Abnormality ................................................. 91
Indoor Unit Fan Motor Abnormality ........................................................ 93
Swing Flap Motor Abnormality / Lock .................................................... 94
Electronic Expansion Valve Coil Abnormality ........................................ 96
Drain System Abnormality ..................................................................... 98
Capacity Setting Device Abnormality ..................................................... 99
Heat Exchanger (Liquid pipe) Thermistor Abnormality ........................ 100
3.10 Heat Exchanger (Gas Pipe) Thermistor Abnormality ........................... 101
3.11 Suction Air Thermistor Abnormality ..................................................... 102
3.12 Remote Sensor Abnormality ................................................................ 103
3.13 Room Temperature Thermistor in Remote Controller Abnormality...... 104
3.14 Outdoor Unit PCB Abnormality ............................................................ 105
3.15 High Pressure Abnormality .................................................................. 106
3.16 Actuation of Low Pressure Sensor....................................................... 108
3.17 Inverter Compressor Motor Lock ......................................................... 110
3.18 Outdoor Unit Fan Motor Abnormality ................................................... 112
3.19 Electronic Expansion Valve Coil Abnormality ...................................... 113
3.20 Discharge Pipe Temperature Control .................................................. 115
3.21 Refrigerant Overcharged ..................................................................... 116
3.22 High Pressure Switch Abnormality....................................................... 117
3.23 Outdoor Unit Fan Motor Signal Abnormality ........................................ 118