I have a LG ac split with two indoor heads, only one head which runs most of the time (located in a computer room)is freezing, the other head( in a regular office) runs fine,what can be the problem? when the filters are clean and the fan runs good.
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Re: one head freezes
You are short of refrigerant, the evaporators (heads) run in series and if you run short of refrigerant one of them will have reduced or no cooling depending on the amount of refrigerant left in the system. You should make sure that a leak in the system is found before just recharging the system or you will have to do it again in the near future.
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Split = Outdoor unit fan problem. Check Outdoor fan motor is plugged in, Electrically & Mechanically sound, if not replace motor, otherwise replace PCB.
Multi V= Indoor unit EEPROM error - Replace the indoor unit PCB, and then make sure to do Auto addressing and input the address of central control.
One check your indoor fan is correctly running ( blowing a good quantity of air.
Two look for oily residue around flare connectors indoor and outdoor usually indoor first. This indicates a leak. Thus why the ice . Good luck
Dry Mode in AC is to dehumidify the room the fan cycles on and off and the indoor unit temperature drops below freezing which causes condensate to collect on the coil and as a result the humidity level of the indoor air is reduced
first check to make sure that the indoor unit is very slightly off level sloped to the drain area also turn off power and inspect the indoor coil with a flash light to make sure all the fin area is open the drain pan has two possible drain connections if they are both hooked up then the primary "lowest"
could be stoped up a blast of water or air to the drain line should clear out slime also make sure their is a trap in the drain line or the water will only drain dwhen unit is off hope this solves your problem thanks
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