GE Fridge with inverter compressor control voltage between 11k & 13k?

[Thrashmetl]

GE Profile model: PGSS5RKZC SS

So my fridge stopped cooling yesterday so I started YouTubing and found this fantastic troubleshooting video.

The compressor and inverter board are pretty much the same as mine. Borrowed a multimeter and it is getting 120VAC. Tested the posts on the compressor itself and got 6.8 all around. Tested the signal from the motherboard to the inverter board though and instead of getting 4-6VDC I get a reading fluctuating between 11k and 13k. We had the motherboard replaced 3 years ago. Is it the motherboard again?

[Thrashmetl]

Sorry, I meant 11 - 13VDC. 

[isaac]

I would expect it to read about 5vdc but it does sound like its a bad inverter board 

[Thrashmetl]

2 hours ago, isaac said:

I would expect it to read about 5vdc but it does sound like its a bad inverter board 

Why would it be the inverter board if the signal going to the inverter board is way too high?

And after thinking about this more, could the excessively high signal to the inverter board cause a cascade effect and cause the inverter board to fail too?

[Thrashmetl]

So I bought a new main control board and the signal at J15 going to the inverter board is still reading 12VDC instead of between 4 and 6VDC. Don’t know where to go from here. 

[isaac]

3 hours ago, Thrashmetl said:

So I bought a new main control board and the signal at J15 going to the inverter board is still reading 12VDC instead of between 4 and 6VDC. Don’t know where to go from here. 

I would still go with the inverter board

20 hours ago, Thrashmetl said:

Why would it be the inverter board if the signal going to the inverter board is way too high?

And after thinking about this more, could the excessively high signal to the inverter board cause a cascade effect and cause the inverter board to fail too?

Its GE sometimes stuff just has no good explanations by them,  but please update us with the results,  good luck

[David R]

I am having  the same issue.   Did you find the problem

[Nathaniel Peterson]

On 9/5/2023 at 8:17 PM, David R said:

I am having  the same issue.   Did you find the problem

Make sure you test with the connections still plugged in or you'll get bad readings. It's very possible the board takes out the inverter. Do what the video explains. Make sure you check the windings on the compressor.

[borris]

On 9/17/2023 at 3:52 PM, Nathaniel Peterson said:

Make sure you test with the connections still plugged in or you'll get bad readings. It's very possible the board takes out the inverter. Do what the video explains. Make sure you check the windings on the compressor.

 Tested windings on compressor, check. tested inbound voltage from mainbord, 7 V, check. tested 120 V supply, check. replaced inverter control board, will not engage; nogo.

Unit was powered on.

ICB has clear lense and green led, as with the old, it flashes periodically. 

I am stumped.

[gecko555]

having similar issue here - replaced main control board, replaced inverter, replaced wiring harness, wired temporarily to new compressor just to rule that out - still no dice - getting 110 to the compressor but not the 3-6v signal from control board.