2 Wire Linear COmpressor
Now that you have accurately diagnosed the issue with the sealed system, click the below button for Sealed System Repair Contents:
OHM Test:
A 2-Wire Linear Compressor should Ohm at 6-8 ohms across the Power to Common Pins. If you read open from the Main PCB you will need to check your OLP to insure it is closed. If the compressor reads open across the Power to Common pins at the compressor directly then the compressor will need to be replaced.
*Note: If the compressor winding reads open make sure and test the rest of the sealed system thoroughly for leaks and contamination that might have caused the compressor failure.
Voltage Test:
Compressor should receive voltage from connector 201 approximately 140-190 Vac, 2 Minutes after turn on, or you can run test mode 1 from the Main PCB to energize the compressor.
Capacitor Test:
If you are experiencing very low or no voltage out to the compressor from the main board then test your capacitor using the Cap Test function on your VOM. The Microfarad value is printed on the Capacitor.
How to Test 2 Wire Linear Compressor Circuit when Compressor Drive Voltage is Low
Test 1: Disconnect power to the refrigerator. Unplug Connector 201 from the Main PCB.
Plug refrigerator back into the wall and place in Test Mode 1.
Test for Vac from the CAPACITOR PIN on the left side of the connector to the POWER Pin on the right side of the connector.
Around 2 Minutes after entering test mode the voltage should be 180-190Vac.
If No Blink Codes appear and no or very low voltage is found at the Main PCB during this test, then the Main PCB will need to be replaced.
If a Blink Code appears on the Main PCB soon after plug in then the above test cannot be performed. (Will vary by model).
5 Responses
Nice post. I learn something new and challenging on websites I stumbleupon every day. It will always be useful to read through articles from other writers and use a little something from other websites.
Helpful
Very helpful for me to confirm PCB condition.
What does it mean when the PCB LED is blinking 3 times? LFXS29766S/00
Mike,
3 Blink means the Main PCB is detecting the compressor circuit to be open. Ohm the compressor from the main pcb. Could be open OLP, Mouse chewed through wire at compressor, open compressor winding, etc.
For more details Check out this link: https://lgerrorcodes.com/compressorblinkcodes-linear/