Question about LG LSC121PMA Split System Air Conditioner

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Compressor not cutting off when temp goes boiiow set temp

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What is the make / model of your air conditioner. With out that information i cant help you with your ac repair problem.Air Conditioning Delray Beach

Posted on Aug 15, 2016

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Still not getting cold


First, if the compressor doesn't run, it'll never get cold. You didn't say if it ran or not.

The defrost circuit is *designed* to cut the compressor out of the circuit during the 2 - 3 times (8 to 12 hour intervals) each day it goes into defrost mode. The compressor will remain off until the defrost temperature sensor (hidden in the freezer section) reaches 50 degrees (or so) *OR* for 20 to 25 minutes each time the defrost timer cycles on. If it is stuck in defrost mode because it failed to advance due to a bad clock motor or because of bad contacts, it will *prevent* the compressor circuit from ever being energized.

Check into this circuit and the location of this timer for your particular fridge. You should not need to worry about the defrost terminator, thermistor, sensor, heater or anything else in the *defrost circuit* at this time to get the compressor running.

I hope this helps & good luck!

Jan 27, 2014 | GE Profile PSW26P Stainless Steel Side by...

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Too cool or over cool in room


Indoor sensor to sense the room temp and must cut off the compressor by working. If sensor defective, compressor will continuously running resulting to over cool in room. And also 23 C degree setting temp is best cooling for office and bed rooms. If for peculiar instrument which should be kept under low temp, can be set as mentioned temp (say 18 C or 16 C )<br />

on Jan 10, 2011 | Heating & Cooling

1 Answer

I have recently installed 1Te Voltas 2 star A.C. I need clarification on the following 1) In cool mode, what is system of auto cut. Suppose I put on remove temp 27deg C. Temp of the room goes up to 26 deg...


Dear Mahesh

In Cool Mode

Temp Diff - + - 1 deg C in Room Temp & Set Temp

This is auto cut

In Dry Mode

Comp Runs for 10 mins then get off for 5 mins then again get on for 10 mins this cycle continuues.

Oct 15, 2013 | Whirlpool ACQ158XP Wall/Window Air...

1 Answer

2006 Ion, a/c cycles cold to hot when driving why, it goes back and forth


Depends on if the ac is cutting off or if the air flow is changing.
If the compressor is cutting off it could be a faulty relay or pressure switch - even the compressor clutch. Might be something with the radiator fan too.
If the compressor is running and you get hot air, it could be a problem with a blend door under the dash.

Jul 31, 2012 | 2006 Saturn ION

1 Answer

You can set the temp for the unit to come on and it comes on and runs and cools for a few minutes then the compressor cuts off then the fan a little later. After a few minutes it comes back on and does...


Is the AC set on an energy saving mode. Together with this program if the thermostat is defective the same symtoms can appear. So please check on the thermostat and replace.
Since the compressor is cutting off the cooling does not take place to the extend that is set.

Aug 30, 2010 | Whirlpool ACC184PS Thru-Wall/Window Air...

1 Answer

Fan comes on for 10 sec. trys to start but stops,i unplug the power and try again same thing .It would it do it once every 2 months ,but now it will not stay on. please can you help me bruno


Possible that the relay or the compressor relay is switching off in load. If there is cooling onthe compressor but cuts off without a reason then shcek if the thermostat is kep tlow to let the trigger cut off. set a temp just above the room temperature.If the compressor holds on till the set temp is reached the thermostat is working fine. otherwise the thermostat may be givng the srong signal so that the compressor is not swittched on.
You can bypass the relay drive to switch on the compressor to chech this circuit. If so get the auto circuit corrected.

Aug 29, 2010 | Heating & Cooling

1 Answer

Compressor will not turn off but cannot find the location of the low pressure switch to change it. blows cold but will not cycle off...


there is a thermistor switch located in evaporator case(thin black single or 2 wires) that makes the compressor cut in and out (cycle) it monitors evaporator temperature.
check head pressures with air cond charging station or gauge set and monitor pressure on high and low side (150-200kpa on low, 1500-1800kpa on high good average depending on ambient temp) if it is low on gas due to leak this can also keep compressor running longer due to evaporator temp not reaching lowest threshhold to cut compressor out

Jun 13, 2009 | 1998 Chevrolet S-10 Pickup

1 Answer

My freezer's defrost systems runs constantly


i dont think so i would look at the compressor kicking out on thermal overload or a faulty thermostat thermostats have two settings cut in cut out your cut in could be bad and not turning the compressor on till the temp reaches melting temps now if your hearing a click buzz then you need to look at the compressor and make sure the compressor fan is running but its not a defrost promblem

Sep 11, 2008 | Frigidaire Freezer Refrigeration White...

2 Answers

Kitchenaid freezer will not stay frozen 5 years old


it might be your thermostat stucking up...the one your adjusting one notch higher...

Mar 28, 2008 | Refrigerators

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