I have a two year old double head lg only cool unit,
the indoor fans runs non stop in both heads all the time, even if the setting temp is higher than the room temp and in any mode. the fan should keep running only if the system is in dehumidification mode. it stops only if you turn off the AC
by the remote and also the the temp is not reaching the desired level ,no icing on the lines, clean filters and blowers for both heads.
Hamid from toronto
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Re: lg split indoor fan runs non stop
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
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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.
Please understand first, air conditioning system not only cooling the area but also removing the heat. If heat in the room stays constantly, even 24 hrs running a/c couldn't cool the room. Now, why the a/c could not cool the room or remove the heat from the room. Check air filter, evaporator coil and blower wheel for clean. If not service the unit immediately. And also check indoor fan motor rpm. If rpm is low, replace fan capacitor. Check for gas pressure to confirm no leak or running with short of gas. It's advisable to service both indoor and out door once in 6 months at least. Otherwise, your electric bill will kill you lot. Thanks.
Is there a auto/on switch for the fan? In auto it will only run when the condensing (outside unit) runs. If its in the on position it will run all the time. Also, possible bad thermostat stuck in on position. Check and see if the condenser unit is also running all the time.
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.
Hi, I assume this is a split system, with the indoor and outdoor unit. If you are talking about the fan on the outdoor unit, this is the condenser fan motor. It is exposed to the heat of the ambient temp. and removing the heat from indoors. If you have a heat pump, this motor runs year around and gets a lot of use. I have seen the 5mfd run capacitor fail which could cause this motor not to start, but more than likely the condenser fan motor has burned out.If it is the outdoor unit you are talking about, can you hear the compressor come on when you start it? You may stand by the unit and have someone turn the t-stat to cool and see if you hear it come on. It will shut off after awhile due to high head pressure. But, if nothing happens, you may not be getting power from the breaker being tripped or a blown fuse at the disconnect box at the unit.Check these before calling out a tech.If you are talking about the indoor fan, make sure the panels are on good if its a gas unit as there is a door switch that is closed and if the panel is loose, it will stop the fan from coming on. The indoor blower motor may also be burned out. It shouldn't take more then an hour at the most to find out what is causing this problem. Could be a fan relay. I would recommend calling a qualified a/c Co. to come out and check this. Wish I was there and could be of more help. Good Luck, Sincerely, Shastalaker7
Ok. So first things first. LG have a reputation with all their products. THEY ARE ALL BAD! If you remember GoldStar, they are now LG. GoldStar had horrible products. Now this is what LG has. The fact that the filters are cleaned and the units are serviced is an abosulte plus and will provide the units with extra longevity. Now are these drains are they used for water drainage. If so the upstairs units shouldn't need them unless there is some sort of rise in the drain pipe.
Now to the noise. It seems like there is something which is causing the fan to make a noise. It could be loose bearing or a piece of the fan which has broken away causing it to hit the inside of the unit. Since it is on both units, it would be a generic problem with this series and unfortunately is what you are stuck with now.
To combat this problem, I would: ring LG and the company who installed them and demand that they be repaired and have a warranty on the repairs. Just a heads up, LG are really bad to contact should you have a complaint, so keep persisting that they be repaired free of charge since that they are still under warranty.
If you are not happy with LG or your installers response, I would remove the units and have another brand put in. I recommend Mitsubishi Heavy Industries and Panasonic. Both units are whisper quiet. In fact they are quieter that the LG.
Oh and that only reason why LG boast about their "whisper quiet-ness" is because that is probably the only good going for them - and thats' not even right!
I hope that I have helped you in some way. Good Luck! Mat
I have run into this with the LG brand systems. try shutting power off to the outdoor unit to reset all units. If problem persists, it could have to do with a charge level of refrigerant (freon) or possibly a failed control board.
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.