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Before Tapping into a Sealed System let’s check a few things first…. 1) Gather Readings from the unit: Freezer Temperature (Ideal Temp 0°F) Refrigerator Temperature (Ideal Temp 37°F) Compressor Amp Draw Compressor Voltage ***Record the above readings for future use. If you need to call TCC for help these numbers will help the TCC Agent […]

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WELCOME TO LG’S NO COOL troubleshooting We have developed this website to help you troubleshoot Sealed System Failures more effectively. By answering a few simple questions you can be on the right track to properly diagnosing the exact problem the first time! Let’s get started! ENTER Navigating the site Restarts the troubleshooter Returns to this […]

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Compressor Type? (First 3 Letters on Compressor Label) 2 Wire Linear (FLA, FLB, FC, FLS) 3 Wire Linear (FLD, FLE, FMA) BLDC INVERTER (B**, BMA, BMH, BMK, BSA, etc.) Reciprocating (LD, LQ, LX, EGX, EGY, EGZ,etc.) Compressor Blink Codes Does Your Unit Require a Software Update? COMPRESSOR JIG SOFTWARE

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Since your pressures are equalizing in the normal timespan and normal pressure range the compressor is likely inefficient: Normal Run Pressures:R134: (Low) 5”HG – 5PSI (High) 85 -110PSIR600: (Low) 10″HG – 15″HG (High) 45-60PSI Inefficient Compressor Low Side: Higher than NormalHigh Side: Lower than Normal Overcharge Low Side: Higher than NormalHigh Side: Higher than Normal

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Since your Pressures Equalized lower than normal its is very likely that you have a LEAK in the system. The below Articles will help you locate your leak: Normal Run Pressures:R134: (Low) 5”HG – 5PSI (High) 85 – 110PSIR600: (Low) 10″HG – 15″HG (High) 45 – 60PSI Low Side Leak Low Side: Lower than NormalHigh […]

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Low Pressure? After the Pressures have equalized, is the pressure less than….R134: 40PSI? Or R600: 15PSI? YES NO Keep In Mind… The room temp and internal temp will affect your equalization pressure. The above numbers (R134:40PSI and R600:15PSI) are based off of a 70 degree room and the unit is not cooling at all, meaning […]

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Since your pressures are taking a really long time to equalize this tells us there is a RESTRICTION somewhere in the system. The two articles below can help you troubleshoot where your restriction might possibly be: Normal Run Pressures:R134: (Low) 5”HG – 5PSI (High) 85 -110PSIR600: (Low) 10HG – 15HG (High) 45-60PSI Restrictions Before the […]

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You will now need to tap into the Sealed System if you have not already to read your High and Low Pressures. Please be sure to record your Run pressures. For proper diagnosis you will need both the High and Low side pressures. Once you have your run pressures recorded you can continue to below […]

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Compressor Voltage over 80Vac? If needed, you can run test mode 1 by pressing test button on Main PCB 1 time to force compressor on. Then feel for vibration by hand. In Test Mode the voltage should reach 80Vac within 1 Min of pressing the test mode button. YES NO

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Compressor runs? Is the compressor running? If needed, you can run test mode 1 by pressing test button on Main PCB 1 time to force compressor on. Then feel for vibration by hand. In Test Mode the voltage should reach 80Vac within 1 Min of pressing the test mode button. YES NO