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F09AHJ Indoor fan not starting

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Posted on Jan 02, 2017

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SOURCE: LG F09AHJ A/C indoor fan runs with push start, but will not start by itself.

bad start capacitor

Posted on Dec 04, 2012

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I have a neo plasma lg 7kw will not heat LG Air conditioner


Make sure the setting on the remote is correct . Sun symbol for heating. Make sure the filters are clean. On heating, the indoor unit will 1/2 open the flap but the fan shouldn't start. The outdoor unit should start and if working properly, will be blowing cold air. The indoor unit will open the flap fully and the indoor fan will start once it gets hot then you should feel warm air. If the outdoor unit is blowing warmish air, I would say the reversing valve coil has failed or one of the indoor temp or pipe sensors are faulty. If a sensor fails, a "CH" error should appear on the display.

Mar 30, 2016 | LG Heating & Cooling

1 Answer

Initially fan in indoor unit was surging,cutting in and out,now has stopped completely and red/green flash twice followed by red flashing 4 times


The flashing indicates a fault code. Not knowing what make / model you have makes it impossible to determine the exact fault. If the indoor fan was running erratically, it may just be a fan capacitor on the indoor unit. Some units have a separate capacitor, some have the capacitor mounted on the main indoor control board. Check and see if the fan starts if you give it a flick to start it spinning when you turn the air con on. If it runs and the error flash does not appear, then you will know its a fan capacitor.

Apr 12, 2015 | Heating & Cooling

1 Answer

F6 error code on Frigidaire split unit ac, model FSC12CM6J/FSE12CM6J. Solution says to check fuse? Where is this located?


It seems like the indoor fan is not running. Quite a few split systems have a fuse on the indoor board. It will require stripping off the outer cover of the indoor unit and removal of the electronic box cover. The indoor board is in there. The fuse may be replaceable or it may be a type that is soldered on which makes it virtually non replaceable. ( A new indoor board will be required) Make sure all power is turned off or disconnected before you do anything. Another possibility is the fan motor start capacitor has failed. Try this first before stripping the unit. When the unit is turned on and the outdoor unit has started, give the indoor fan barrel a flick with your finger to start it spinning, if it keeps spinning and the error doesn't appear, it would indicate that the fan motor start capacitor has failed. The capacitors on indoor units are normally small black square boxes with 2 terminals on it. These capacitors are mounted inside or close to where the indoor electronic box is. Again, make sure all power is disconnected or turned off at the meter box before you do any disassembly.

Apr 09, 2014 | Frigidaire Heating & Cooling

1 Answer

Front grill


Check the air filter and if it is dirty, replace..
Turn equipment off and let the ice melt.
After ice melts, place a/c in cooling mode and set the thermostat to 3 degrees below room temp display.

The indoor unit fan should start blowing cold air immediately and then turn off once the room temp drops one degree below the cooling temp setting.
If the indoor unit does cycle off, check the outdoor unit and make sure it turns off at the same time.
If the outdoor unit continues to run and the indoor fan is not running, the indoor unit will ice up.
A defective compressor relay that is stuck in a closed position will cause icing of the indoor unit because it keeps the compressor running when it should turn off with the indoor fan.

Do you have an error code being displayed on the controller?
Is there an led light that is flashing on the indoor unit?

Another possibility causing the indoor unit to ice up is if the freon in the system starts to get low.
Make sure the ice has all melted for this next check.
Pretty easy to check without special tools.
If the air filter is clean and there is no dust/ dirt blocking the fins on the indoor unit, turn a/c back on to cool and check that the indoor unit fan comes on and is blowing air good.
Once everything seems to running good go to the outdoor unit.
There will be two lines with black rubber insulation covering them.
Peel back the insulation three inches on each line and observe the copper lines.
If either line starts to frost up the a/c system is most likely low on refrigerant.


Another cause of indoor unit icing could be that the aluminum fins behind the air filter are clogged with dust or other foreign material.
This would block the air that must be pulled in causing the indoor unit coil to become too cold due to lack of air flow and it will ice up.

Operating the cooling system when the outdoor temperature is below 60 degrees can cause the indoor unit to ice up also.

I'm Robert.
Florida certified a/c contractor. 30 years experience.
Hope this helps.


Mar 18, 2014 | Fujitsu Heating & Cooling

2 Answers

Mr slim indoor fan shuts off


Might change the battery on your control. I wish these had a hard wire thermostat not a big fan of the remote can be confusing.

Mar 19, 2013 | LG LS-L1210CL Mini Split Air Conditioner

1 Answer

Air conditioner unit is working but the inside fan is not cutting on.


Check your circuit breaker for the indoor fan. If that is ok try turning the indoor fan by hand to see if it rotates freely. If it doesn't it probably needs to be replaced. If that's ok then check the capacitor for the indoor fan. It is probably attached to the fan. You can check it with a multimeter with the capacitor check function or take it to a heating and air supply and they can check it. Also check the fan motor windings. Connect one lead of an ohmmeter to the common leg and the other to the start leg. Check the reading remove the lead from the start leg and connect it to the run leg and see what it reads. Common to start should be higher than common to run. If either indicates an open winding then the motor needs to be replace. Some motors have more than one speed. High speed is usually used for A/C.

Jul 16, 2010 | Ruud Handler Air Conditioner

1 Answer

My indoor blower is not working it blinks 8 times


This alarm state is a CH08 alarm. Which indicates that the indoor unit fan motor has a locked rotor. Solution is to check the indoor fan capacitor and replace or test the windings of the indoor fan motor. Note: the indoor fan motor is a BLDC fan motor and can not be replaced with any other motor. It runs of a voltage regulated frequency.

Mar 18, 2010 | LG LS-L1210CL Mini Split Air Conditioner

1 Answer

Indoor unit freezing up


THE OUTDOOR UNIT HAS A CONTACTOR WITH THE CONTACTS WELDED TOGETHER THE CONTACTOR CONNECTS TO THE COMPRESSOR AS IT TYPICALLY PULLS A SURGE OF 20 -30 AMPS OR MORE..WITH THE INDOOR UNIT IN FAN ONLY THE COMPRESSOR SHOULD NOT BE RUNNING. THE CONTROL WIRES GOING TO THE UNIT HAVE 24 VOLTS TO THE CONTACTOR TO PULL IN THE CONTACTS TO SUPPLY 220 TO COMPRESSOR.

Mar 09, 2010 | Heating & Cooling

1 Answer

Indoor blower motor not responding. checked 24


if you have 24v between the c common terminal and g green/fan terminal on the board in the furnace and the fan does not come on, then it is the circuit board.(as long as you know the fan works)

Jul 14, 2009 | Heating & Cooling

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