Specifications

SiUS39-602
ii Table of Contents
3.2 Oil Return Operation .............................................................................. 50
3.3 Defrosting Operation.............................................................................. 52
3.4 Pressure Equalizing Control .................................................................. 53
3.5 Pump-down Residual Operation ............................................................ 54
3.6 Restart Standby ..................................................................................... 56
3.7 Stopping Operation ................................................................................ 57
4. Protection Control .................................................................................59
4.1 High Pressure Protection Control .......................................................... 59
4.2 Low Pressure Protection Control ........................................................... 60
4.3 Discharge Pipe Protection Control......................................................... 61
4.4 Inverter Protection Control ..................................................................... 62
4.5 STD Compressor Overload Protection .................................................. 63
5. Other Control ........................................................................................64
5.1 Outdoor Unit Rotation ............................................................................ 64
5.2 Emergency Operation ............................................................................ 65
5.3 Demand Operation................................................................................. 67
5.4 Heating Operation Prohibition................................................................ 67
6. Outline of Control (Indoor Unit) .............................................................68
6.1 Drain Pump Control ............................................................................... 68
6.2 Thermostat Sensor in Remote Controller .............................................. 70
6.3 Freeze Prevention.................................................................................. 72
Part 5 Test Operation ................................................................. 73
1. Test Operation ......................................................................................74
1.1 Procedure and Outline ........................................................................... 74
1.2 Operation When Power is Turned On.................................................... 77
2. Outdoor Unit PC Board Layout .............................................................78
3. Field Setting ..........................................................................................79
3.1 Field Setting from Remote Controller..................................................... 79
3.2 Field Setting from Outdoor Unit ............................................................. 91
Part 6 Troubleshooting............................................................. 111
1. Troubleshooting by Remote Controller ...............................................114
1.1 The INSPECTION / TEST Button ........................................................ 114
1.2 Self-diagnosis by Wired Remote Controller .........................................115
1.3 Self-diagnosis by Wireless Remote Controller..................................... 116
1.4 Operation of the Remote Controller’s Inspection /
Test Operation Button .......................................................................... 119
1.5 Remote Controller Service Mode .........................................................120
1.6 Remote Controller Self-Diagnosis Function.........................................122
2. Troubleshooting by Indication on the Remote Controller....................127
2.1 “A0” Indoor Unit: Error of External Protection Device ........................... 127
2.2 “A1” Indoor Unit: PC Board Defect ........................................................128
2.3 “A3” Indoor Unit: Malfunction of Drain Level Control System (S1L)......129
2.4 “A6” Indoor Unit: Fan Motor (M1F) Lock, Overload .............................. 131
2.5 “A7” Indoor Unit: Malfunction of Swing Flap Motor (MA).......................132