20 Most Recent LG LS-K2430HL Heat Cool Mini Split Air Conditioner Questions & Answers

You have to try resetting the system. First turn the breaker off for the condenser and wait about 20 seconds. After you turn it back on the system should reset. Air Bulance AC Cleaning Repair Services

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.

On a heat pump the difference from heat to cool is the reversing valve.
In cooling or heating the Y1 terminal will always be energized, this is the contactor.
Depending on brand the reversing valve will either be energized in Heat or Cool. At the outdoor unit check to see if the reversing valve is getting 24 volts in cool, if not check to see if it is getting 24 volts in heating. The easiest way to check if the reversing valve is shifting, is to feel the big copper tube, (it is not the suction line on a heat pump) this is a refrigerant vapor line. It will be cold in cooling and hot in heating.
Check your thermostat installation instructions and heat pump installation instructions to determine the proper terminal designations for your heat pump and thermostat. There are some brands out there that use the B terminal as common to the 24 volt circuit, so you have to check the wiring and make sure this is not common.
If it is energized in Cool then the Y1 and O terminal will be energized. You will have 24 volts from common usually the C terminal to Y1 and O.
If it’s energized in Heat then the Y1 and B terminal should be energized. You will have 24 volts from common usually the C terminal to Y1 and B.
If you get heat when you’re calling for cooling or vice versa then switch the wire between the B and O terminals.

Please check your thermostat setting not more than 28 or 29. And also check for your heating sensor that regularly cut off or not.

The oil charge has less to do with system size & more to do with size & type of compressor being used. most comp. manufactures will list oil type & quanity on the tag located on the body of the compressor. very very rare to have to mess with oil charge on a central a/c unit unless tubing runs are extremly longer than 50 feet & needs to be added at install of unit by recommended allowances of units manufacturer.

Hi Marie, does the green indicator light on the front panel flash after it shuts down? If it does...count how many times it flashes this will refer to a fault code diagnostic. Keith.

This sounds like a faulty thermostat (indoor unit), or a welded (shut) set of contacts in the condensing unit (outdoor unit)

The compressor windings may have a ground or a short' The compressor needs to be ohmed, in order to be sure.

These Ptac units are advance system that are designed with variable speed motors that modulate in order to save energy, This is normal operation, because starting a motor at a lower speed rather than the conventional high speed will save energy, which translates to saving you money. As the load increases (heat) on the condenser coil, the fan will ramp up accordingly.

The blade assembly could be loose, or the air mixer door (damper) could be closed.