Samsung AQV18VBAAQV24VBAAQV18VBC Service Manual

Contents

Samsung Electronics12. Troubleshooting12-1 Items to be checked first12-11. 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 5 cables.Check the terminals if the indoor unit and outdoor unit are properly linked by the same number of cables.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 theair conditioner.No Operation of air conditioner Explanation1 The OPERATION indication LED(BLUE) blinks when a powerplug of the indoor unit is plugged in for the first time.It indicates power is on. The LED stops blinking if the operationON/OFF button on the remote control unit is pushed.2 In a COOL operation mode, the compressor does notoperate at a room temperature higher than the settingtemperature that the INDOOR FAN should operate.[In case of heat pump model]In a HEAT operation mode, the compressor does notoperate at a room temperature lower than the settingtemperature that indoor fan should operate.In happens after a delay of 3 minutes when the compressor isreoperated. The same phenomenon occurs when a power is on.As a phenomenon that the compressor is reoperated after adelay of 3 minutes, the indoor fan is adjusted automatically withreference to a temperature of the air blew.3 Fan speed setting is not allowed in DRY mode. The speed of the indoor fan is set to LL in DRY mode.Fan speed is selected automatically in AUTO mode.4 Compressor stops operation intermittently in DRY mode. Compressor operation is controlled automatically in DRY modedepending on the room temperature and humidity.5 Timer LED(ORANGE) of the indoor unit lights up and theair conditioner does not operate.Timer is being activated and the unit is in ready mode.The unit operates normally if the timer operation is cancelled.6 The compressor stops intermittently in a COOL mode orDRY mode, and fan speed of the indoor unit decreases.The compressor stops intermittently or the fan speed of theindoor unit decreases to prevent inside/outside air frozendepending on the inside/outside air temperature.7 [In case of heat pump model]Compressor of the outdoor unit is operating although it isturned off in a HEAT mode.When the unit is turned off while de-ice is activated, thecompressor continues operation for up to 9 minutes(maximum)until the deice is completed.8 [In case of heat pump model]The compressor and indoor fan stop intermittently in HEATmode.The compressor and indoor fan stop intermittently if roomtemperature exceeds a setting temperature in order to protectthe compressor from overheated air in a HEAT mode.9 [In case of heat pump model]Indoor fan and outdoor fan stop operation intermittentlyin a HEAT mode.The compressor operates in a reverse cycle to removeexterior ice in a HEAT mode, and indoor fan and outdoorfan do not operate intermittently for within 20% of the totalheater operation