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spoon1967

GE Refrigerator PSI23NGNABB Defrost Problem

18 posts in this topic

I have a GE Profile side-by-side refrigerator that was installed in 2002. About a year ago, it stopping defrosting, the back panel of the freezer compartment got covered with frost, the freezer coils got caked with ice, and the freezer and refrigerator temperature started to rise. The defrost heater coil was completely black, so I replaced it and the problem was solved.

Then about a month ago, the no-defrost problem returned, so I again replaced the defrost heater coil. When I examined the coil I'd pulled, however, I was a bit stumped because it had continuity and indicated the same resistance as the replacement coil. The frost returned, so I assumed that there was something else wrong.

I used a jumper to connect line and defrost leads on the motherboard, and the defrost coil immediately started to glow and defrost the freezer. So I assumed that the motherboard was bad.

I pulled the motherboard and found a burnt solder connection on the back of the board under the compressor IC, so I ordered and installed a new motherboard. I installed it and the refrigerator seems to run fine (although when I open the door, the refrigerator keeps running, whereas with the original motherboard, opening the door would cause the refrigerator to stop until the door was closed again). However, when I put the freezer through the #14 diagnostic test to defrost, the fans and compressor altered their operation, but the defrost heater didn't glow. I again jumped the line and defrost leads in the motherboard, and again, the coil glowed red and defrosted things.

What should be the next part(s) I replace?

Many thanks.

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Need appliance parts? Call 877-803-7957 now!

Can you post or fax your tech sheet so we can have a look at it for you? Fax: 866-315-4504

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.. I ordered and installed a new motherboard.

did you follow the instructions with the new Motherboard ?

(do NOT cut any wires for your model)

should be the same as 31-9072

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Tech sheet attached. Thank you!

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did you folloe the instructions with the new Motherboard ?

(do NOT cut any wires for your model)

should be the same as 31-9072

Yes, I followed all instructions on the new motherboard. I skipped step 2 (eliminate thermistor wire) and step 4 (cut green wire in capacitor board) as both steps are only for people with bottom freezer units, and mine is a side-by-side.

And the main board I installed was a WR55X10942 as the GE website indicated this was the appropriate replacement for my unit.

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... I put the freezer through the #14 diagnostic test to defrost...

I'm not seeing the test referenced in the tech sheets you posted. What's your source for this?

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That's from the PSS/GSS service manual. Your box is a PSI-- I don't know that this applies.

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That's from the PSS/GSS service manual. Your box is a PSI-- I don't know that this applies.

Hmm. Interesting. All the test numbers DO seem to do what the chart says they should.

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ahhh similar to 31-9118 w/Custom Cool

Diagnostics

Pages from 31-9118 Artica SxS Dual Evap w Electronic Touch.pdf

Super helpful -- thank you very much. Actually, note #2 helps a lot -- I did a #15 and a #16 to reset the system, and after doing so, the unit started acting like it used to where opening one of the doors would change how the system operates (something or other would stop running while the door was open and then start running again when the door was closed). And the comment about how the defroster wouldn't come on when the evaporator thermistor is above 70 degrees is also instructive, since when I ran test #14 previously, the coil didn't come on -- something tells me I have a bad evaporator thermistor (and perhaps a bad defrost thermostat).

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Can I just add as well that this refrigerator has been a disappointment for most of its life? It's never been treated roughly, but interior plastic panels and drawers have broken multiple times, I think we had to replace the water tubing at one point, and now all these issues with the defrost components. Is this common? I would have thought a GE refrigerator -- especially one from the Profile line -- would have been a mid-grade, reliable unit and not a race-for-the-bottom unit with the cheapest possible design and cheapest possible Chinese parts, but apparently that's not the case. Between this fridge and my GE washing machine with the grammatical error in the instructions printed under the lid, I wonder what's going on at the company. If they can design and sell a quality jet engine (which apparently they can) they ought to be able to design and sell a quality home appliance. But I digress...

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... If they can design and sell a quality jet engine (which apparently they can) they ought to be able to design and sell a quality home appliance. But I digress...

... yes, their Jet engines are good ... appliances are another story ...

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... yes, their Jet engines are good ... appliances are another story ...

And their nuclear reactors, e.g., Fukushima

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What is the difference between the evaporator thermistor and the defrost thermostat?

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Thanks for explaining that difference between the thermistor and the defrost thermostat.

The new evaporator thermistor arrived and is installed and the defrost cycle now works! MANY thanks for the advice!!!

Let me just add a special thanks because this was a dual-failure problem (thermistor AND motherboard). So if I'd called a technician, it probably would have taken a lot of time (and $$$) to diagnose, if it would have been diagnosed at all (in which case I'd be buying a new fridge (although certainly not a GE) for even bigger bucks).

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... I'd be buying a new fridge (although certainly not a GE)

:whistling:

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