Hi, I have a LG split A/C and whenever the temperature is above 40 celcius i've noticed that the compressor keeps turning off after every 30 mins or so and then comes back ON after sometime. The indoor unit shows that the compressor is ON but the air coming is not cold at all. I have also noticed that this happens more during the day than at night.
I have already got it checked and even the capacitor had been changed but still the problem persists. Please help me cause i really don't know what to do?
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Re: Compressor keeps shutting off after 30mins or so
The system may be going into cool down mode or thermal over load if the temperature is 104 degrees fahrenheit or above since the compressor will shut down if the internal temperature reaches 165 degrees.This could also be from low oil in the compressor.
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Many residential refrigerator / freezers are designed to work at temperature considerably above above freezing. Most modern refrigerator / freezer have a single electric thermostat - located in the fresh food compartment. This lone thermostat will control the compressor to keep the fridge (fresh food) section at the desired temperature (usually between 34 - 38 degrees F). The freezer will get colder regardless of how cold it is already whenever the fridge thermostat turns the compressor on.
Now that you see how the thermostat works, let's look at what happens when the fridge is placed in an unheated space - like a garage. In winter time, the temperature can drop considerably below 38 degrees. If the outdoor temperature remains cold enough, for long enough - it will affect the thermostat in the fridge. The temperature inside the fridge could drop below 38 degrees, preventing the thermostat from telling the compressor to turn on. Meanwhile, the temperature in the freezer compartment slowly rises from the normal -10 to 0 F degrees. It will continue to rise until it is the same temperature as the fresh food compartment or until the thermostat in the fresh food compartment tells the compressor to turn on again. This means the freezer contents will thaw.
If the temperature in the garage is even in the 40 to 50 degree range, the loss of cold in the fridge may not happen often enough to keep the compressor coming on often enough to keep some freezer items frozen solid - such as ice cream. Remember, water freezes at 32 degrees F, other products may require lower temperatures to remain frozen, and could thaw at 28 or other temperature.
Hi, The unit is usually low on freon when this happens...the machine will over ride the freeze stat and the low pressure control for five minutes and then shut down... Have a tech. check the system for leaks and repair them. Then recharge the system and you'll be good to go...
Hi, The unit is probably low on freon....this causes it to build some ice while running. Then when the compressor shuts down it will melt off the coil and drip... Get the refrigerant charge adjusted properly and you should be okay...
The freezer or evaporator fan runs whenever the temperature controls is closed and the compressor is running. The control may not be getting satisfied and continues to call for cooling or there is a possibility that there is a short in the wiring. If the refrigerator temperature is not below 40 degrees it cold mean there is a problem with the sealed system.
Normaly on this units the problem is the PC boards if i'm not mistaken they have censors this censors give problems sending the unit to a Protection mode when the units works too hard sounds like thats your problem room 2 big and the High preasure presostat it's telling the unit to stop.
This is due to thermal overload,Which can be caused by low oil in the compressor,the fan has stopped running on the unit outside,Dirty coils,or just a worn out compressor.Although this is thermal overload,It has nothing to do with outside temperature,But rather the internal temperature of the compressor itself.
Fujitsu, Mitsubishi, Sanyo mini-split indoor fan motors operate continuoulsy. The room-temperature sensor is inside the unit, so the fan motor needs to circulate air continuouly to sense room-air temperature. This is normal operation.
Its normal that the air coming out is warm cause you set it to heat mode. Check your setting temperature, it is normal for the unit to shutdown when it will attain the setting temperature and operate when the temperature is lower than the setting temperature(heat mode).