3. Troubleshooting
3-1 Items to be checked first
1)The input voltage should be rating voltage ±10% range.
The airconditioner 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 5 cables.
Check the terminals if the indoor unit and outdoor unit are properly linked by the same number of cables. Otherwise the airconditioner 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 airconditioner.
NO | Operation of air conditioner | Explanation | ||
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1 | The STD operation indication LED blinks when a | It indicates power is on. The LED stops blinking if the operation | ||
| power plug of the indoor unit is plugged in for the first time. | ON/OFF button on the remote control unit is pushed. | ||
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2 | In a COOL operation mode, the compressor does not | In happens after a delay of 3 minutes when the compressor is | ||
| operate at a room temperature higher than the setting | reoperated. The same phenomenon occurs when a power is on. | ||
| temperature that the IN DOOR FAN should operate. | As a phenomenon that the compressor is reoperated after a delay | ||
| In a HEAT operation mode, the compressor does not | of 3 minutes, the indoor fan is adjusted automatically with refer- | ||
| operate at a room temperature lower than the setting | ence to a temperature of the air blew | ||
| temperature that indoor fan should operate. |
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3 | Fan speed setting is not allowed in AUTO or DRY mode. | The speed of the indoor fan is set to LL in DRY mode. | ||
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| Fan speed is 5 steps is selected automatically in AUTO mode. | ||
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4 | Compressor stops operation intermittently in DRY mode. | Compressor operation is controlled automatically in DRY mode | ||
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| depending on the room temperature and humidity. | ||
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5 | Compressor of the outdoor unit is operating although it is | When the unit is turned off while | ||
| turned off in a HEAT mode. | pressor continues operation for up to 9 minutes (maximum) until | ||
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| the deice is completed. | ||
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6 | Timer LED only of the indoor unit lights up and the | Timer is being activated and the unit is in ready mode. | ||
| air conditioner does not operate. | The unit operates normally if the timer operation is cancelled. | ||
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7 | The compressor and indoor fan stop intermittently in HEAT | The compressor and indoor fan stop intermittently if room temper- | ||
| mode. | ature exceeds a setting temperature in order to protect the com- | ||
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| pressor from overheated air in a HEAT mode. | ||
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8 | Indoor fan and outdoor fan stop operation intermittently in | The compressor operates in a reverse cycle to remove exterior ice | ||
| a HEAT mode. | in a HEAT mode, and indoor fan and outdoor fan do not operate | ||
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| intermittently for within 20% of the total heater operation | ||
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9 | The compressor stops intermittently in a COOL mode or DRY | The compressor stops intermi | tt | ently or the fan speed of the indoor |
| mode, and fan speed of the indoor unit decreases. | unit decreases to prevent | inside/outside air frozen depending on | |
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| the inside/outside air temperature. | ||
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