Question about LG LSC183VMA Split System Air Conditioner

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Air con does not run

I have a split system air con that is gassed to correct pressure but when it is turned on both the high and low pressure sides begin to drop to about 15 psi and then unit turns off . both taps are open . its a reverse cycle model that has just been sitting for about 2 years.

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Re: air con does not run - LG LSC183VMA Split System Air Conditioner Air Conditioners

The compressor valve weak

Posted on Jan 12, 2008

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there is no suction at all when the machine is off as the gas equalizes around the system
all you will read is the pressure of the gas in the system and that will tell you nothing
to read gas pressures you need to know the type of gas in the system , have gauges that can handle the high pressures and have two on a manifold so that you can read suction and high side pressure differences
That way you can see if the system is low on gas or over charged

Feb 24, 2016 | Sanyo Split System Air Conditioner

1 Answer

Lg split system wont stay on

When the freon is low the unit will start. When the compressor starts the low pressure side drops and shut it off as the high pressure rises. The low pressure switch shuts off to protect the compressor when there is not enough freon to carry the oil to lubricate it.

Oct 18, 2014 | Air Conditioners

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R-22 home condenser unit low side and high side pressures when running

Pressures look good but to know if it is charged correctly you have to do a sub cool or superheat to know for sure. Rule of thumb is if turn unit it on let it run 10 minutes. If the suction line sweats and is cold. Might be proper charge.

Jun 24, 2014 | Ruud Central System Air Conditioner

1 Answer

Please help me reset conia split air con ca2422

If you need to reset a pressure switch...then the refrigeration system needs to be checked. High or low switch looks like about a 3/4 inch Diameter plug with 2 wires & a red manual reset switch in the middle.

Dec 13, 2013 | Air Conditioners

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Temp off air coming out of register 74 degrees suction line temp is 42 degrees but high side line isnt warm dont look like it is wanting to take freon either compressor is running new system low side is...

Hello, what is your high side pressure? A bad compressor will show abnormally high low side pressure with abnormally low high side pressure. That 45 low side pressure is low And superheat high. If you high side pressure is normal toma little above normal but the low side remains low you have a restriction in the system, that might be why it's not taking in tne freon. Let me know you high side pressure

May 11, 2011 | Goodman Air Conditioners

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I have 40 lbs on low pressure side. When I turn on the air, the low pressure light comes on and I have no power to compressor I thought 40 psi was enough charge

That probably is correct but that sounds like pressure without pumping it. Once you begin to pump it the pressure changes then stabilizing about 10 min. after starting it up. I recommend that you start the system and watch the pressure closely and burp in gas a little bit a time to keep the pressure where it needs to be. Now the reason the system shut down was the low pressure switch caught it running on low suction pressure during the transition to the high side of the system. Please keep in mind there is a certain amount of refrigerant that is suppose to go into this system and too much will slug the compressor and kill it.

Apr 24, 2011 | Air Conditioners

1 Answer

System 3 in-door with system 4 out door inverter. all in door unit show error code CH24 pls help

CH 24-Splits and Multi Splits = High or low pressure trip. Low at 1 bar High at 35 bar check pressures. Multi V = High pressure trip.

Nov 17, 2010 | LG LS-L1210CL Mini Split Air Conditioner

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Not cooling good

while the machine is running, partially block the outdoor fan until the high pressure reaches 270 psi, the low pressure should be 70 psi at this time. This should be true within 10 lbs.

Jun 24, 2010 | Goodman CLJ42AR49 Air Conditioner

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Why i have high presure in the low presure side

Two common reasons for this.

1) valves weak/broken and pressure is leaking in from the high side of the system.

2) AC compressor is not running. Make sure the compressor is actually running. It has a low rumbling noise to it - and often you'll need to actually 'feel' the compressor for the vibration (of running). Or feel of the big copper line (it should be cool-cold) - or - feel the smaller of the two lines (warm to hot).

good luck

Jun 16, 2010 | LG LS-L1210CL Mini Split Air Conditioner

1 Answer

Sanyo split high pressure side tube icing

ok, on these units, if by high side line you mean the small tube going from outside to inside, that tube is actually on the low side, the metering device is in the outdoor unit. If you shut the unit down, let everything thaw then restart and find that small tube is freezing up right at the outdoor unit right away, my guess is its low on charge. I see that you put some in, make sure it is the right knid of refrigerant. they do not hold alot. Where is your suction pressure running. If you put 2 to 3 pounds with no change, you may have overcharged but that is telling you that there is a restriction in the line inside the outdoor unit, probably the filter if it has one, or the metering device itself. Let me know what you find.

Jun 16, 2009 | Sanyo Split System Air Conditioner

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