9. Troubleshooting
9-1 Items to be checked first
1.The input voltage should be rating voltage ±10% range.
The air conditioner may not operate properly if the voltage is out of this range.
2.Is the link cable linking the indoor unit and the outdoor unit linked properly? The indoor unit and the outdoor unit shall be linked by 4 wires.
2 wires are for power and other 2 wires are for communication, total 4 wires on each indoor unit. Check the terminals if the indoor unit and outdoor unit are properly linked by the same number of cables and if connecting position on the terminal is correct. Otherwise the air conditioner may not operate properly.
3.When a problem occurs due to the contents illustrated in the table below it is a symptom not related to the malfunction of the air conditioner.
No |
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| Operation of air conditioner |
| Explanation | |
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1 | In a COOL operation mode, the compressor does not | In happens after a delay of 3 minutes when the compressor | ||||
| operate at a room temperature higher than the setting | is reoperated. The same phenomenon occurs when a power | ||||
| temperature that the INDOOR FAN should operate. | is on. | ||||
| In a HEAT operation mode, the compressor does not | As a phenomenon that the compressor is reoperated after a | ||||
| operate at a room temperature lower than the setting | delay of 3 minutes, the indoor fan is adjusted automatically with | ||||
| temperature that indoor fan should operate. |
| reference to a temperature of the air blew | |||
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2 | Fan speed setting is not allowed in AUTO( | ) or | The speed of the indoor fan is set to LL in DRY mode. | |||
| DRY( | ) mode. |
| Fan speed is 5 steps and is selected automatically in AUTO | ||
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| mode. |
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3 | Compressor stops operation intermittently in |
| Compressor operation is controlled automatically in DRY mode | |||
| DRY( | ) mode. |
| depending on the room temperature and humidity. | ||
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4 | Compressor of the outdoor unit is operating although | When the unit is turned off while | ||||
| it is turned off in a HEAT mode. |
| compressor continues operation for up to 12 minutes (maxi | |||
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| mum) until the deice is completed. |
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5 | Timer LED( |
| ) only of the indoor unit lights up and | Timer is being activated and the unit is in ready mode. | ||
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| the air conditioner does not operate. |
| The unit operates normally if the timer operation is cancelled. | |||
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6 | The compressor and indoor fan stop intermittently in | The compressor and indoor fan stop intermittently if room | ||||
| HEAT mode. |
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| temperature exceeds a setting temperature in order to protect | |
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| the compressor from overheated air in a HEAT mode. |
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7 | Indoor fan and outdoor fan stop operation |
| The compressor operates in a reverse cycle to remove | |||
| intermittently in a HEAT mode. |
| exterior ice in a HEAT mode, and indoor fan and outdoor fan | |||
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| do not operate intermittently for within 20% of the total heater |
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| operation. |
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8 | The compressor stops intermittently in a |
| The compressor stops intermittently or the fan speed of the | |||
| COOL mode or DRY mode, and fan speed of the | indoor unit decreases to prevent inside/outside air frozen | ||||
| indoor unit decreases. |
| depending on the inside/outside air temperature. | |||
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Samsung Electronics |
