code sa66 keeps coming up.

⟐ Edited Temmuz 19, 2025 at 6:23 GMT-7

We have a GE Monogram Refrigerator model ZFSB25DTG SS. Not sure how old it is, it came with the house and we moved in a few weeks ago.

The fridge initially wasn't getting below 45 degrees (set to 37) and the freezer was at about 5 (set to 0). After a few days I did some poking around and discovered a lot of ice completely clogging what I think are the evaporator coils at the bottom of the fridge (behind the fresh food drawers). There was also a small amount of ice built up on the back of the freezer, but I didn't dismantle anything in the freezer.

After unplugging the fridge and letting it defrost overnight the temperature was perfect (freezer and fridge) for nearly two weeks, but then jumped back up again, and of course the ice had returned. Defrosted it again (with a hair dryer this time) and it OK for now, but I obviously need a more permanent fix.

From what I've read it sounds like it's probably a problem with the defrost system, but I can't find any specific information for this model of fridge, so I'm not exactly sure how to proceed. Can anyone give me some direction?

Thanks,

Rob Wilson.

Edit:

Top freezer, bottom fridge (can't remove styrofoam due to ice, so can only see bottom two coils).

Fridge seems to be a lot more iced up than freezer if you can see all the white behind the two coils.

⟐ Answered Kasım 07, 2024 at 13:44 GMT-7

Performed the voltage test on the main control board - CON201 (1&4 pin) after pressing the test switch. Voltage got up to ~50V Max. Left connector off and noticed LED blinking three times. Main Control Board? Thanks Brian

⟐ Answered Eylül 29, 2024 at 13:38 GMT-7

⟐ Commented Nisan 24, 2026 at 10:03 GMT-7

⟐ Edited Aralık 19, 2023 at 5:23 GMT-7

Thank you so much in advance!

⟐ Edited Aralık 12, 2023 at 15:34 GMT-7

⟐ Commented Ekim 08, 2025 at 20:55 GMT-7

⟐ Answer edited Şubat 16, 2026 at 13:50 GMT-7

Desperate!!

Frank

Here an update... I was checking the Overload/relay with star capacitor with my multimeter and it seems to be fine. So just for giggles I plugged it up again to see if the compressor was vibratingand it was. So I walk around and check the coils inside the freezer and the are cold?? I Don't understand what is happening!!

⟐ Answered Eylül 10, 2025 at 6:42 GMT-7

I have a Kenmore Elite side-by-side refrigerator that is 3 years old. I noticed recently that freezer was no longer freezing food. The condenser coils were a little dirty so I unplugged the refrigerator and cleaned them. When I plugged it back in everything worked. The freezer began making ice and freezing food again. Three hours later I noticed the ice in the ice maker was melting. The evaporator fan in the freezer is running. The condenser fan is running. The compressor is humming and does not feel hot when touched. I have adjusted the freezer and refrigerator temperatures to -1 and 37. I removed the back panel on the freezer to check evaporator coils and there is no frost or ice present at all. Evaporator coils are wet. The evaporator fan blows cool air in the freezer when it is plugged in but not freezing cold. What could be the problem? The refrigerator model number is 795.5183.3410

Matt

⟐ Edited Aralık 19, 2023 at 5:24 GMT-7

Bought this refrigerator couple years back. All is good, until a few hours ago... as water stopped coming out of the dispenser. Recently (about a month ago) changed the water filter (used Samsumg filter) and all was well until today.

• - Note that water stopped coming out all of a sudden. My wife used it a few minutes ago to get some water... but now no more water comes out of the dispenser.
• - When I remove the filter, water is getting dispensed at good speed, but when I put back the filter (the same that I was using the last 30 days), water stops.
• - I bought a different filter and see the same result. Not even sputtering (the thing that usually happens the first few minutes when a new filter gets inserted)... it's like blank.. no water at all.
• - Can hear the humming sound when the dispenser gets clicked.
• - No leakage.
• - All the other lights on the control panel are glowing.
• - Emptied ice bucket and see that new ice is being made.

⟐ Answered Ocak 01, 2025 at 18:43 GMT-7

⟐ Commented Eylül 16, 2025 at 21:47 GMT-7

Our ice maker is no longer dumping the ice it makes, I think the ice maker mold thermostat may need to be replaced. This thermostat is N. O ( normally open ) and when cold from the ice in the mold it will close, which tells the motor to dump the ice. how can this be tested ? To check it with an ohm meter will do no good because it is N. O. and it has to be ice cold to close. If I remove it from the ice maker and cover it with ice will that make it cold enough to close so it can be tested with an ohm meter ?

Please email me direct at leewalt@powerbank.net because I may not be able to find this place again

THANKS !

from north east iowa

⟐ Answered Aralık 25, 2025 at 16:41 GMT-7

What I did notice is that the unit at the bottom (big black thing, Danfoss NLX15KK - I think it's the heat exchange unit) is very hot almost too hot to touch, however the pipe leading off it that goes into the coil/grill at the back of the fridge quickly cools off before the first loop, so the back of the fridge is not distributing the heat as it should be.

This would explain why the fridge and freezer aren't staying cool, but why is the heat not being sent around the coil? Is there supposed to be a pump? Could this be broken?

⟐ Edited Aralık 28, 2023 at 7:08 GMT-7

⟐ Commented Temmuz 25, 2018 at 23:07 GMT-7

⟐ Commented Nisan 07, 2026 at 3:12 GMT-7

I called a local repair shop on the phone and they want to replace the defrost heater, but I'm not sure.

What's the problem cause and suggestions to fix it? Thanks in advance!

⟐ Commented Eylül 20, 2025 at 10:39 GMT-7

⟐ Edited Mart 08, 2024 at 16:56 GMT-7

I’ve tried to reset, checked the arm for frozen ice, checked 100+ times to ensure it was put back into the freezer properly, and nada.

I’m typically a “pro” at fixing just about anything, including the “motherboard” on my former LG frig. So not being able to figure this one out has me extremely frustrated.

Any help/ advice would be appreciated!

Thank you!

Nikki

⟐ Commented Eylül 23, 2024 at 2:10 GMT-7

⟐ Edited Aralık 19, 2023 at 5:25 GMT-7