Service manual

SiUS041111
iii Table of Contents
3.4 Discharge Pipe Temperature Control......................................................... 39
3.5 Input Current Control.................................................................................. 40
3.6 Freeze-up Protection Control ..................................................................... 41
3.7 Heating Peak-cut Control ........................................................................... 41
3.8 Outdoor Fan Control................................................................................... 42
3.9 Liquid Compression Protection Function.................................................... 42
3.10 Defrost Control ........................................................................................... 43
3.11 Electronic Expansion Valve Control ........................................................... 45
3.12 Malfunctions ............................................................................................... 48
Part 5
Operation Manual................................................................49
1. System Configuration................................................................................50
2. 09/12 Class ...............................................................................................51
2.1 Remote Controller ...................................................................................... 51
2.2 AUTO · DRY · COOL · HEAT · FAN Operation.......................................... 53
2.3 Adjusting the Airflow Direction and Rate.................................................... 55
2.4 COMFORT AIRFLOW Operation............................................................... 57
2.5 POWERFUL Operation .............................................................................. 58
2.6 ECONO Operation ..................................................................................... 59
2.7 OFF TIMER Operation ............................................................................... 60
2.8 ON TIMER Operation................................................................................. 61
3. 15/18/24 Class ..........................................................................................62
3.1 Remote Controller ...................................................................................... 62
3.2 AUTO · DRY · COOL · HEAT · FAN Operation.......................................... 64
3.3 Adjusting the Airflow Direction and Rate.................................................... 66
3.4 POWERFUL Operation .............................................................................. 68
3.5 OFF TIMER Operation ............................................................................... 69
3.6 ON TIMER Operation................................................................................. 70
Part 6
Service Diagnosis................................................................71
1. Troubleshooting with LED.........................................................................73
1.1 Indoor Unit.................................................................................................. 73
1.2 Outdoor Unit............................................................................................... 73
2. Problem Symptoms and Measures...........................................................74
3. Service Check Function ............................................................................75
4. Troubleshooting ........................................................................................78
4.1 Error Codes and Description...................................................................... 78
4.2 Indoor Unit PCB Abnormality ..................................................................... 79
4.3 Freeze-up Protection Control or Heating Peak-cut Control........................ 80
4.4 Fan Motor (DC Motor) or Related Abnormality........................................... 82
4.5 Thermistor or Related Abnormality (Indoor Unit)........................................ 85
4.6 Signal Transmission Error (between Indoor Unit and Outdoor Unit).......... 86
4.7 Unspecified Voltage (between Indoor Unit and Outdoor Unit) ................... 88