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LG Compressor Repair and Software Update

10/9/2020

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LG FLB075LANA Compressor
LG Compressor failure Model# FLB075LANA has resulted in a class action lawsuit, however there is a fix with a replacement Linear compressor Model # TCA38151706.
When replacing the compressor the Software in the refrigerator motherboard must be updated in order to properly cool, The software update tool is Model# CJT30000002.

Quality Service Tech can update your refrigerator and replace the compressor. Contact us for your estimate.

CJT30000002
CJT30000002 software update tool
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How to find a restriction in a GE Monogram  refrigeration system

3/25/2020

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Las Vegas GE Monogram Wood Panel .Quality Service Tech 3349 Casey Dr. Las Vegas NV 89120 Refrigerator RepairGE Monogram Wood Panel Refrigerator
HOW TO FIND A RESTRICTION IN A GE MONOGRAM REFRIGERATION SYSTEM. GE is known for their custom built in refrigerators with a 230v compressor with inverter. After a while through natural wear and tear you will have Poe oil that will slug through the lines and eventually block the capillary tubes causing a restriction.
​Wear to find the restriction? is it in the evaporator coil, the condensing coil or somewhere along the lines located in the walls of the refrigerator. Following the steps below will help aid you in finding the restriction and if possible to clean that restriction out. The steps listed here can be used in refrigeration, HVAC and appliances using the same basic concept.

  1. Power
  2. Recovery
  3. Access
  4. Isolate
  5. Find
  6. Flush
  7. Clean
  8. Weld
  9. Pressure test
  10. Vacuum pump
  11. Weigh in charge

Las Vegas Electrical Panel Repair, Quality Service Tech 3349 Casey Dr. Las Vegas NV 89120Electrical Panel
Power. If you reach the electrical plug then pull it, if not find the breaker and switch off the one labeled refrigerator or the appliance name you are working on.

Refrigerant Recovery Tank Quality Service Tech 3349 Casey Dr. Las Vegas NV 89120Refrigerant Recovery Tank
Recovery. The Freon inside this refrigerator is 134a. You must use a certified recovery tank with a yellow top and gray bottom to store the refrigerant in. These tanks can range in size from 30, 50 125+ lbs and more. Make sure the out refrigerant line from the recovery machine is hooked to the liquid side (blue) of the recovery tank.

Recovery Machine Las Vegas Quality Service Tech 3349 Casey Dr. Las Vegas NV 89120Recovery Machine
You need a recovery machine to take the refrigerant from the refrigerator and transfer it to the recovery tank via refrigerant gauges. Make sure the yellow refrigerant hose located in the middle of the gauges is hooked up to the "in" port of the recovery machine.

Refrigerant Gauges Las Vegas Quality Service Tech 3349 Casey Dr. Las Vegas NV 89120Refrigerant Gauges
Refrigerant gauges hook to the high side (Red) & low side (Blue) service port valves and aid in the transfer of refrigerant via the recovery machine to the recovery tank. When both gauges read negative pressure you have successfully recovered the refrigerant.

Refrigerator Compressor repair Las Vegas Quality Service Tech 3349 Casey Dr. Las Vegas NV 89120Refrigerator Compressor
Refrigerant gauges are hooked up (Red) High Side, (Blue) Suction low side to the compressor.

refrigerant Recovery Process Las Vegas Quality Service Tech 3349 Casey Dr. Las Vegas NV 89120Refrigerant Recovery Process
Here is the refrigerant recovery process using the tools mentioned above.

Access. This GE Monogram refrigerator has a bottom freezer. Unscrew the bottom door panel from the arms extending out. Remove the door and all baskets contained within.
  • Remove the inside arm brackets
  • Unplug fan motor harness
  • Remove fan motor cover
  • Remove ice maker
  • Remove ice-maker wall plate
  • ​remove ice-maker harness
  • isolate the freezer evaporator coil
  • Locate Evaporator coil
  • Remove defrost terminator connection
  • Remove defrost heater connection
  • ​Un-weld capillary tube from high side
  • connect nitrogen tank to gauges, shut off low side (Blue) open high side (red) and push nitrogen through high side. video below.
In the video above as you can see the nitrogen passes through the evaporator coil with no restriction. this tells us the resriction is not located inb the freezer evaporator coil.
TIP: When un-welding the process small tube, use a wire cutter to score the process tube, bend and break loose the copper to open up the hole to the process tube. Use a small guitar string  and push up to see if restriction is in tube. If there is a restriction in process tube, cut tube back or use string to clear blockage.
​After you clear blockage, weld process tube back into evaporator coil.
Move to the process tube on-top of the refrigerator and un-weld the filter dryer and use the guitar string on the process tubes to find the restriction. in this case we found the restriction in the small process tube. We cut back the tube to past the point of the restriction, we weld on a new filter dryer, pressure test and check for leaks to 300 psi with soap bubbles.
Connect Vacuum pump to yellow hose of gauge, open high side (red) and low side (blue) of gauges and vacuum pump to 500 microns or less on the micron meter.
Weighing in Refrigerant Charge on Wireless Scale Las Vegas Quality Service Tech 3349 Casey Dr. Las Vegas NV 89120Refrigerant Scale
Next step is to weigh in the refrigerant charge to manufacturer specifications with a refrigerant scale. You can find the correct ounces or lbs on the nomenclature inside the refrigerator or on the unit you are working on. After you weigh in the charge, plug the unit back in and turn on the power.

These are basic steps to help you in finding a restriction. There are a few more steps in between, if you are a refrigeration technician then you should know all the steps. The important thing is to take no shortcuts. if you need a quality service tech, give us a call.
​702-682-6116
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No water from refrigerator dispenser

2/17/2020

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Las Vegas Refrigerator repairWater dispenser not working
NO WATER FROM REFRIGERATOR DISPENSER
You go to get a glass of nice cold water from the dispenser on your refrigerator and come to find out there is no water coming out. Here are some simple troubleshooting tips to find out why and what may need to be repaired.
  • Check Water Filter
  • Check Water Valve
  • Check Dispenser Controls
  • Check Frozen Water Line

Picture
Check Water Filter
​Clogged water filters can restrict the flow of water or completely stopping it.
Depending on the water filter placement on top, below or inside of fridge it is a good idea to replace every few months. After you replace it do not forget to hit the water filter reset button on the control panel and run about 3 gallons of water through it to flush the system and fill the cartridge.

Refrigerator Water valveRefrigerator water & Ice Dispenser Valve
Check Water Valve
A non-working or clogged water valve will not push water through the filter and into the dispenser. Can you hear the valve come on inside or on the bottom back of the refrigerator. These water valves can become clogged with calcium. You can replace them by shutting off the water valve in back of the refrigerator and disconnecting the power wires and hoses.
​Notice most water valves come in a pair, the other one is for the ice maker. If you hear it humming and test it to see if water is pumping through it then you have a good water valve. Proceed to the next step.

Check Dispenser Controls
Are the lights on the dispenser indicating power? if so press in the water dispenser , you should hear the water valve click on. If you don't have power then you have a control problem and need to call a quality Service Tech to properly diagnose the problem. If you have power and no water then proceed to the next step.
Check Frozen Water Line
​If all the above are working and no water is coming out of the dispenser you may have a frozen water line. The reason is because the water dispenser and ice dispenser is located on the freezer side and is susceptible to freezing temperatures while sitting in the line for a while or exposed to lower temp. For this you will need a frozen water line tool to melt the ice. You will need to heat up some water, fill plunger tube, insert line up water dispenser hole and slowly force water into frozen water line till you feel no more pressure on plunger. Test to dispenser to see water flow, repeat as necessary.
Water line dispenser de-thaw tool
Refrigerator Water Line De-Thaw Tool
If you need further help in diagnosing your refrigerator, give us a call or schedule online.
​702-682-6116
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Compressor Repair on Custom Refrigerators

1/7/2020

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Custom Panel Refrigerator Las VegasCustom Panel Refrigerator
Custom panel refrigerators have 230v compressors that run from a 115v household plug. How is that possible to step up in voltage? A inverter is used to increase the voltage from 125v to 230v. The first thing you check besides power coming in is the inverter. How can you test the inverter? There are 2 things to look for . The common inverter has  2 components to test. 


Common refrigerator InverterCommon refrigerator Inverter
​First thing is to check the voltage on the thermostat wire coming into the inverter shown in yellow to the right. This voltage is DC; if you have an A/C digital voltage tester your reading should be above 50v to ensure the thermostat is working.

Next is the compressor wires voltage coming out of the inverter into the compressor should read at lest 80v to 230v,  if both are within those readings then the next step is to check the compressor ohms.

230v Refrigerator Compressor230v Refrigerator Compressor
How to ohm out a 230v refrigerator compressor.
With these compressors the readings are different than a regular compressor. On a multi-meter from common to run, common to start and start to run all resistant readings should read the same. If more than 1 ohm off then the compressor will not run. You can flip the diagram upside down and it will match.

If compressor is running but the refrigerator is not cooling its a good idea to check the amperage on each leg and refer to the data plate on the refrigerator to make sure it is operating in the LRA range to manufacturer specs. If not then you can have a low refrigerant problem. Then you need to call for a refrigerant leak test or you can test the compressor  yourself with a inexpensive 134a refrigerant leak tester. This refrigerant leak detector can detect R22 R410A R134A CFCs HCFCs HFCs refrigerants. Read our other post on how to do a refrigerant leak test.

If you need more help, please give us a call, Quality Service Tech can diagnose your appliance for free with repair. Click on the button below to get in touch with us or schedule online for refrigerator repair​

Refrigerator Compressor repair near me

​702-682-6116
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    Author

    Shawn Lippert
    ​Las Vegas Certified, Licensed HVAC/R & Appliance Technician. See Qualifications

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