Specifications

SiUS34-907
ii Table of Contents
3.4 Pump Down Residual Operation ................................................................ 40
3.5 Restart Standby.......................................................................................... 41
3.6 Stopping Operation .................................................................................... 41
4. Protection Control .....................................................................................42
4.1 High Pressure Protection Control............................................................... 42
4.2 Low Pressure Protection Control................................................................ 43
4.3 Discharge Pipe Protection Control ............................................................. 44
4.4 Inverter Protection Control ......................................................................... 45
5. Other Control.............................................................................................46
5.1 Demand Operation..................................................................................... 46
5.2 Heating Operation Prohibition .................................................................... 46
6. Outline of Control (Indoor Unit) .................................................................46
6.1 Drain Pump Control.................................................................................... 46
6.2 Louver Control for Preventing Ceiling Dirt.................................................. 49
6.3 Thermostat Sensor in Remote Controller................................................... 50
6.4 Freeze Prevention ...................................................................................... 52
6.5 View of Operations of Swing Flaps ............................................................ 53
Part 6 Test Operation ....................................................................54
1. Test Operation ..........................................................................................55
1.1 Procedure and Outline ............................................................................... 55
1.2 Operation when Power is Turned On ......................................................... 57
2. Outdoor Unit PCB Layout..........................................................................58
3. Field Setting ..............................................................................................59
3.1 Field Setting from Remote Controller ......................................................... 59
3.2 Field Setting from Outdoor Unit.................................................................. 73
Part 7 Troubleshooting ..................................................................90
1. Symptom-based Troubleshooting .............................................................92
2. Troubleshooting by Remote Controller .....................................................95
2.1 Self-diagnosis by Wired Remote Controller ............................................... 96
2.2 Self-diagnosis by Wireless Remote Controller ........................................... 97
2.3 Remote Controller Maintenance Mode....................................................... 99
2.4 Remote Controller Self-Diagnosis Function ............................................. 102
3. Troubleshooting by Indication on the Remote Controller ........................109
3.1 “A0” Error of External Protection Device ................................................... 109
3.2 “A1” PCB Defect........................................................................................ 110
3.3 “A3” Malfunction of Drain Level Control System (S1L).............................. 111
3.4 “A6” Fan Motor (M1F) Lock, Overload ...................................................... 113
“A6” Malfunction of Indoor Unit Fan Motor ................................................ 115
3.5 “A7” Malfunction of Swing Flap Motor (M1S) ............................................ 119
3.6 “A9” Malfunction of Moving Part of Electronic Expansion Valve (Y1E) ..... 121
3.7 “AF” Drain Level above Limit ..................................................................... 123
3.8 “AJ” Malfunction of Capacity Determination Device.................................. 124
3.9 “C4” Malfunction of Thermistor (R2T) for Heat Exchanger........................ 125
3.10 “C5” Malfunction of Thermistor (R3T) for Gas Pipe................................... 126