Samsung AS18WJWB Service Manual

Also see for AS18WJWB: User manual User manual

Contents

Samsung Electronics26Check the basic items first to judge if the problem was caused by breakdown or misuse. If none of the basic items are related to theproblem, please scrutinize the machine according to the 'Breakdown Diagnosis by Symptoms' method.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 theairconditioner.6. Troubleshooting6-1 Basic Breakdown Diagnosis ItemsThe OPERATION indication LED(GREEN) blinks when apower plug of the indoor unit is plugged in for the first time.In a COOL operation mode, the compressor does notoperate at a room temperature higher than the settingtemperature that the INDOOR FAN should operate.In a HEAT operation mode, the compressor does not operateat a room temperature lower than the setting temperaturethat indoor fan should operate.Fan speed setting is not allowed in DRY( ) mode.Compressor stops operation intermittently in DRY( )mode.Compressor of the outdoor unit is operating although it isturned off in a HEAT mode.Timer LED(GREEN) of the indoor unit lights up and theair conditioner does not operate.The compressor and indoor fan stop intermittently inHEAT mode.Indoor fan and outdoor fan stop operation intermittentlyin a HEAT mode.The compressor stops intermittently in a COOL mode orDRY mode, and fan speed of the indoor unit decreases.123456789Operation of air conditioner ExplanationIt indicates power is on. The LED stops blinking if the opera-tion ON/OFF button on the remote control unit is pushed.In happens after a delay of 3 minutes when the compressoris reoperated. The same phenomenon occurs when a poweris on.As a phenomenon that the compressor is reoperated after adelay of 3 minutes, the indoor fan is adjusted automaticallywith reference to a temperature of the air blew.The speed of the indoor fan is set to LL in DRY mode.Fan speed is selected automatically in AUTO mode.Compressor operation is controlled automatically in DRYmode depending on the room temperature and humidity.When the unit is turned off while de-ice is activated,the compressor continues operation for up to 9 minutes(maximum) until the deice is completed.Timer is being activated and the unit is in ready mode.The unit operates normally if the timer operation is cancelled.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.The compressor operates in a reverse cycle to removeexterior ice in a HEAT mode, and indoor fan and outdoor fando not operate intermittently for within 20% of the total heateroperationThe compressor stops intermittently or the fan speed of theindoor unit decreases to prevent inside/outside air frozendepending on the inside/outside air temperature.No