TROUBLE SHOOTING GUIDE
Problem |
| Probable cause |
| Remedy |
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A. The air conditioner does not | 1. | Power failure. | 1. | Wait for power resume. |
run. | 2. | Fuse blown or circuit breaker | 2. | Replace the fuse or reset the |
|
| open. |
| breaker. |
| 3. | Voltage is too low. | 3. | Find the cause and fix it. |
| 4. | Faulty contactor or relay. | 4. | Replace the faulty component. |
| 5. | Electrical connections loose. | 5. | Retighten the connection. |
| 6. | Thermostat adjustment too low | 6. | Check thermostat setting. |
|
| (in heating mode) or too high (in | 7. | Find the cause then replace ca- |
|
| cooling mode). |
| pacitor. |
| 7. | Faulty capacitor. | 8. | Check and retighten. |
| 8. | Incorrect wiring, terminal loose. | 9. | Find the cause before reset. |
| 9. | Pressure switch tripped. |
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|
B. The outdoor fan runs but the | 1. | Motor winding cut or grounded. | 1. | Check the wiring and the com- |
compressor will not start. | 2. | Faulty capacitor. |
| pressor winding resistance. |
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|
| 2. | Find the cause then replace ca- |
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|
|
| pacitor. |
C. There is insufficient heating | 1. | There is a gas leak. | 1. | Remove charge, repair, evacu- |
or cooling. | 2. | Liquid and gas line insulated to- |
| ate and recharge. |
|
| gether. | 2. | Insulate them separately. |
| 3. | The room was probably very hot | 3. | Wait while unit has enough time |
|
| (cool) when you started the sys- |
| to cool the room. |
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| tem. |
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|
D. The compressor runs con- | 1. | Thermostat adjustment too low | 1. | Check thermostat setting. |
tinuously. |
| (in heating mode) or too high (in | 2. | Check condenser air circulation. |
|
| cooling mode). | 3. | Find leak, repair and recharge. |
| 2. | Faulty fan. | 4. | Remove charge, evacuate and |
| 3. | Refrigerant charge too low, leak. |
| recharge. |
| 4. | Air or incondensables in refriger- |
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|
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| ant circuit. |
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E. The compressor starts but | 1. | Too much or too little refrigerant. | 1. | Remove charge, evacuate and |
shuts down quickly. | 2. | Faulty compressor. |
| recharge. |
| 3. | Air or incondensables in refriger- | 2. | Determine the cause and replace |
|
| ant circuit. |
| compressor. |
| 4. | Changeover valve damaged or | 3. | Remove charge, evacuate and |
|
| blocked open (heat pump unit). |
| recharge. |
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| 4. | Replace it. |
F. Clicking sound is heard from | In heating or cooling operation any | In heating or cooling operation any | ||
the air conditioner. | plastic parts may expand or shrink | plastic parts may expand or shrink | ||
| due to a sudden temperature change | due to a sudden temperature change | ||
| in this event, a clicking sound may | in this event, a clicking sound may | ||
| occur. | occur. | ||
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22ENGLISH
2/1/07 9:41:37 AM
