[freddyrick]

Originally Posted by richappy

GE is changing the motors so the resistance now is different. I measured 1.8Kohm between the blue and white wires and get no continuity to the others.The motor part # is WR60X10185
This is a six pole induction motor and if your motherboard is not puting out a square wave, at best the motor will not run, at wost, it will burn out if the motherboard driver will deliver the excess current! At present, I am not willing to burn open a new motor to confirm it is still a six pole, induction motor.
You might wind up paying more money than you think.

Now I am totally confused. Gene says 1000 ohms. Are there any specs re: voltage output at the plug to verify the motherboard.

[richappy]

As I said before, you will need a portable scope to verify the motherboard is puting out a square wave. BUT, without a correct and complete test proceedure for the motor and motherboard,you run the risk of burning out both of them.
If you want to just replace the motor, don't complain to us if it or the motherboard burns out.

[freddyrick]

Originally Posted by richappy

As I said before, you will need a portable scope to verify the motherboard is puting out a square wave. BUT, without a correct and complete test proceedure for the motor and motherboard,you run the risk of burning out both of them.
If you want to just replace the motor, don't complain to us if it or the motherboard burns out.

No one is going to blame you, I was only trying to learn of a test procedure for the motherboard. I appreciate the help you have offered, thank you.

[trixkit]

Richappy,

I started another thread,but happened upon this and I think you have descibed my issue.

I had a power surge and fried the mother/main control board, it was blackened from smoke and the fridge was dead. I replaced the main board, but didn't realize that the power surge also cooked the evaporator fan motor. The fan motor was visibly scorched and had a short.

I replaced the fan motor, but not until after I installed the new main computer/motherboard and ran with it for 24 hours.

So, now everything works, except the fan motor, it's only reading 12 volts at the connector. I tested the NEW fan directly and it works fine.

Did I fry the motherboard/main computer by installing it with the bad fan motor? If I did, is it common for everything to work, except the fan? Seems like certain functions of the main board are working fine.

Oh and I tested the thermistors, they are fine.

Thanks
Great post
John

[richappy]

Your new board is bad, must get below 12 volts and be a square wave, motor will not run without a square wave

[trixkit]

Thanks! That was it, replaced the board and all is good!

John

[richappy]

Glad to hear that.

[freddyrick]

Here's a new problem. I replaced the motherboard and fan motor. Everything worked well for over a month. Then it started getting warmer. So I found the evaporator coil all frosted up. I defrosted in with a blow dryer, and now things seem OK again. Any ideas what might have caused the coil to frost up? Thanks.

[richappy]

Most probable problem is the defrost heater, just check, if a single coil and black inside with a open gap, it's bad.

[bendeli]

Thanks, I appreciate the feedback.




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