Heat Controller BG-81G - Default Chapter; Table of Contents

1. PRECAUTION ........................................................................................................................2
1.1 Safety precaution ...........................................................................................................2
1.2 Warning .........................................................................................................................2
1.3 Caution ..........................................................................................................................2
2. FEATURES AND PANEL .......................................................................................................3
2.1 Features ........................................................................................................................3
2.2 Control panel illustration ................................................................................................3
3. UNIT DIMENSION ..................................................................................................................6
3.1 Unit dimension: ..............................................................................................................6
4. OPERATION LIMITS ..............................................................................................................6
4.1 Cooling operation ..........................................................................................................6
4.2 Electric heating operation ..............................................................................................7
5. PROTECTION FUNCTION ....................................................................................................8
5.1 Symbol & Meaning ........................................................................................................8
5.2 Protection Function ........................................................................................................8
6. COMPONENT OPERATION & TESTING ..............................................................................9
6.1 COMPRESSORS ..........................................................................................................9
6.2 FAN MOTOR ...............................................................................................................11
6.3 CAPACITOR, RUN ......................................................................................................11
6.4 THERMOSTAT ADJUSTMENT ....................................................................................12
6.5 HEATING ELEMENT - See Figure 6 ...........................................................................12
6.6 VALVE, DRAIN PAN (see Figure 7) .............................................................................13
6.7 SEALED REFRIGERATION SYSTEM REPAIRS ........................................................13
7. WIRING DIAGRAM ..............................................................................................................15
8. TROUBLESHOOTING .........................................................................................................17
8.1 Flow Chart ...................................................................................................................17
8.2 General Troubleshooting .............................................................................................27
8.3 Troubleshooting Cooling ..............................................................................................30
8.4 Troubleshooting Heating (Cooling/Electric Heater Models) .........................................32
9. INSTALLATION ACCESSORY LIST ...................................................................................34
10. CHARACTERISTIC OF TEMPERATURE SENSOR .........................................................34
Table of Contents
Service Manual
Room Air Conditioner with R-410A
Heat Controller, Inc.
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