Lg split ac outdoor unit delayed start

Hello, the snowflake flashing is a (supposed to be) 5 minute delay to prevent short cycling of the compressor. This delay can sometimes get stuck thus requiring replacement. To test , remove top of thermostat to where you can identify wires and terminals. Have someone stand near the ac unit for this test, and then take a wire or paperclip and briefly touch Rc to Y. This should start the outdoor unit. R to G will start the indoor fan

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.

Make sure all of the pressure switches are closed on the low voltage control circuit on the outdoor unit. If any are stuck open, the compressor will not kick on. Or just push the compressor contactor in with an insulated screwdriver to ensure the compressor does actually work.

The condensor fan is usually a capacitor start capacitor run motor.To test i switch the unit on as normal then carefully flick the fan around in the direction of rotation (you may have to take the grill off) to do this,do not use your hand! If the motor starts to run it will be a faulty capacitor, do not leave it running for long as it will not run at full speed and will trip on thermal O/L or burn out.This is a common fault on AC split phase motors that use a capacitor for either starting or start and run.

Dirty coil wash outside unit with water and change indoor unit filter

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 PCB failure. Replace PCB.

Let me informed again if problem persists,.

the fan control is not for the fan on the top of your outdoor unit. that is for the blower, you have 2 fans. Im guessing you have a split system, 1 unit inside and 1 outside?? Does the outdoor fan continually run??

If you need further help, reach me via phone at https://www.6ya.com/expert/thomas_092728000e6acb79

hi,
The bearing of the outdoor fan have some problem that's why it makes noise. Try to put some oil on the shaft of the fan. if then also the sound remains you have to replace the bearing or the fan as a whole.
ok

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

-Start the unit.
-Press EMERGENCY OPERATION switch.3-minute time delay works.Test run operation operates for 30 minutes.
-Check voltage to terminal block of outdoor unit.Is there 12V DC between 2-1?
-If voltage is presenet check the wiring, compressor contactor outdoor fan motor and compressor.
-If no voltage check voltage to terminal block of indoor unit.Is there 12V DC between 2-1?
-If if voltage is present re-connect the continuity of indoor and outdoor unit connection.
-If no voltage replace the indoor electronic control P.C.
board.
-But also check the coil thermistor sensor and room air thermistor if this two is out of range it can cause the tripping of out door unit. It has the resistance of 8 to 10 k ohms at 25 deg c temp.