5. Troubleshooting
Before troubleshooting the air conditioner,
it is necessary to determine whether the electrical power or the electrical parts are faulty. Follow this procedure :
5-1-1 Check the Voltage of the power source.
The input voltage shall be 115V/60Hz
The air conditioner may not operate properly if the voltage is out of this range.
5-1-2 Check weak and fragile parts.
5-1-3 Check the connection of terminals.
5-1-4 When a malfunction occurs:
| Malfunction | Check point |
| Possible cause |
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➀ | The compressor does not | 1. check the thermostat position. | 1. | Setting temp is lower than room temp. |
| operate. | 2. check the connection of the lead wire. | 2. | Disconnection of the lead wire. |
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| 3. check the over load protector. | 3. | O.L.P is faulty |
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| 4. check the compressor. | 4. | Compressor is faulty |
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➁ | The motor does | 1. check the connection of the lead | 1. disconnection of the lead wire | |
| not operate. | wire & switch. | 2. switch is faulty. | |
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| 2. check the motor | 3. motor is faulty | |
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➂ | The cooling capacity | 1. check the refrigerant leakage. | 1. | Caused by the pipe crack |
| is low. | 2. check the evaporator condition | 2. shortage of refrigerant | |
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| ( freezing, blocked with dusts, etc. ) | 3. clean the evaporator & air filter. | |
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| ❈Difference of temp. exists between |
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| the suction side and the discharge |
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| side at least 12°C |
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| ❈Standard condition |
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| Indoor : 27°C outdoor : 35°C |
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➃ | Noise | 1. check vibration of the pipe | 1. pipes are contact with the other parts. | |
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| 2. check the propeller fan and blower | 2. the hex nut is loose | |
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| ( not loose or broken ). | 3. the parts are broken | |
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| 3. check bearing noise of the motor | 4. motor is faulty | |
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| 4. check the compressor noise against | 5. compressor is faulty | |
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| that of other compressors. |
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Samsung Electronics |
