Service Manual

SiUS071735E
Table of Contents iv
4.26 Electrical Box Temperature Rise................................................................ 95
4.27 Radiation Fin Temperature Rise ................................................................ 96
4.28 Output Overcurrent Detection .................................................................... 97
5. Check ........................................................................................................99
5.1 Thermistor Resistance Check .................................................................... 99
5.2 Indoor Fan Motor Connector Check ......................................................... 100
5.3 Power Supply Waveforms Check............................................................. 100
5.4 Electronic Expansion Valve Check........................................................... 101
5.5 Four Way Valve Performance Check ....................................................... 102
5.6 Inverter Unit Refrigerant System Check................................................... 102
5.7 Inverter Analyzer Check ........................................................................... 103
5.8 Rotation Pulse Check on the Outdoor Unit PCB ...................................... 105
5.9 Installation Condition Check..................................................................... 106
5.10 Discharge Pressure Check....................................................................... 106
5.11 Outdoor Fan System Check ..................................................................... 107
5.12 Main Circuit Short Check.......................................................................... 107
5.13 Power Module Check ............................................................................... 109
Part 7 Trial Operation and Field Settings.................................... 111
1. Pump Down Operation............................................................................112
2. Forced Cooling Operation .......................................................................113
3. Trial Operation ........................................................................................114
4. Field Settings ..........................................................................................117
4.1 How to Change the Field Settings............................................................ 117
4.2 Overview of the Field Settings.................................................................. 120
4.3 MAIN/SUB and Address Setting for Wireless Remote Controller ............ 121
4.4 Facility Setting (cooling at low outdoor temperature) ............................... 123
5. Silicone Grease on Power Transistor/Diode Bridge................................124
Part 8 Appendix............................................................................ 125
1. Piping Diagrams......................................................................................126
1.1 Indoor Unit................................................................................................ 126
1.2 Outdoor Unit ............................................................................................. 127
2. Wiring Diagrams......................................................................................129
2.1 Indoor Unit................................................................................................ 129
2.2 Outdoor Unit ............................................................................................. 130
3. Operation Limit........................................................................................132