1. PRECAUTION........................................................................................................................2
1.1 Safety precautions .........................................................................................................2
1.2 Warning..........................................................................................................................2
1.3 Caution...........................................................................................................................2
2. FEATURES AND PANEL.......................................................................................................3
2.1 Features.........................................................................................................................3
2.2 Control panel illustration ................................................................................................4
3. UNIT DIMENSION..................................................................................................................6
3.1 Unit dimensions: ............................................................................................................6
4. OPERATION LIMITS..............................................................................................................7
4.1 Cooling operation...........................................................................................................7
4.2 Electric heating operation ..............................................................................................7
5. PROTECTION FUNCTION ....................................................................................................9
5.1 Symbol & Meanings..............................................................................................................9
5.2 Protection Functions.............................................................................................................9
6. COMPONENT OPERATION & TESTING............................................................................10
6.1 COMPRESSORS ...............................................................................................................10
6.2 FAN MOTOR................................................................................................................12
6.3 CAPACITOR, RUN.......................................................................................................12
6.4 THERMOSTAT ADJUSTMENT....................................................................................13
6.5 HEATING ELEMENT (See Figure 6) ...........................................................................13
6.6 VALVE, DRAIN PAN (see Figure 7) .............................................................................14
6.7 SEALED REFRIGERATION SYSTEM REPAIRS ........................................................14
7. WIRING DIAGRAM........................................................................................................16
8. TROUBLESHOOTING...................................................................................................18
8.1 Flow Chart.........................................................................................................................18
8.2 General Troubleshooting..............................................................................................28
8.3 Troubleshooting Cooling ..............................................................................................31
8.4 Troubleshooting Heating (Cooling/Electric Heater Models) .........................................33
10. TEMPERATURE SENSOR RESISTANCE CHART...........................................................35
Table of Contents
Room Air Conditioner with R-410A
