Question about LG LS-L1210CL Mini Split Air Conditioner

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Lg split indoor fan runs non stop

I have a two year old double head lg only cool unit,
the indoor fans runs non stop in both heads all the time, even if the setting temp is higher than the room temp and in any mode. the fan should keep running only if the system is in dehumidification mode. it stops only if you turn off the AC
by the remote and also the the temp is not reaching the desired level ,no icing on the lines, clean filters and blowers for both heads.
thanks
Hamid from toronto

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  • Anonymous Mar 18, 2014

    my lg split ac stops working after 30 minutes. I start the ac and set the desire temp of room to say 21. It works fine for around 30 minutes. Then suddenly the actual room temp indicator starts dropping till 11 and then display "LO" and compressor and inside unit fan stops.But in reality the room temp is not even 20 at that time. then after 30 minutes or so the room temp display starts increasing and compressor starts. it keeps on repeating.

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Hello Hamid,
The unit is designed to run the indoor fanmotors continuously when in cooling mode on both indoor units (evaporators). The reason is that this circulates the air and the temperature thermistor or sensor is able to sense return air temperature and in turn start or stop the outdoor unit and compressor as required according to the setpoint temperature. The reason for either unit not reaching setpoint temperature can be a couple of reasons. A) Incorrect design - the unit may be too small for the application. You can calculate this roughly at 650BTU per square meter of room in a relatively warm ambient climate. Or secondly B) The outdoor unit has leaked and is short of refrigerant. You can check this when the outdoor unit is running by feeling the thicker copper tube on the right hand side of the unit. This should be cool to cold. If no temperature difference is felt, it is short of refrigerant. Hope this helps you. Goodbye

Posted on Mar 20, 2009

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