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Thank you for all the troubleshooting documentation and the parts breakdown sheets. However I am unable to do the diagnostics because the display only displays diagonal blue lines. Looking at the parts breakdown sheets I see there are only two control boards in my refrigerator. since I have power I would think the power board is ok. I have to believe this points to the user interface board and it will need to be replaced. Please share your thoughts.
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You are correct, if you cannot get the unit ito the diagnostic mode and you have power coming in replace the user interface board.
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Thank you.
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Hello. Just plugged in be water dispenser interface board and the same thing is going on with the new board. Today is my last day. Can you extend the tech support so we can figure out what is wrong with this refrigerator
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That is very strange. You have power the the user interface and a new U.I did not fix the issue. You may have a shorted wire somewhere. I would check for a damaged wire to the U.I. The wires should enter the door through the top hinge. Check here for any loose or damaged wires. If everything checks out good, the only other possibility I can think of would be a faulty main control board.
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I check the wire at the top hinge and where it comes through at the dispenser. It all looks like new. The voltage I have at the dispenser board is 12vdc between the green/blk yellow/blk and between red/ blk and pink/ blk. Is this the correct voltage? I also have to believe it’s the other board. I removed the back cover plates and I have a very mild burnt smell at the heat sinked transistor. It’s is just so strange that I have voltage out of it. If the voltage is correct, My only explanation is that the power supply is breaking down under a load.
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Looking at the wiring schematic you should have 12 vdc incoming from the red/blk wire. So from red/blk to ground or green/ black (which is a ground)you will have 12vdc. It shows pink/blk as the dispenser so that makes sense that you have 12vdc from there to red/blk as well. They do not show where you should or should not have 12 v on the schematic. If the wiring checked good, the only thing left would be the main control. I wish you luck.
