Bosch side by side B20CS51SNS fridge section has very different temps for each shelf

The fridge section is set to 4 Celcius on the control panel, but the inside of the fridge has wildly varying temperatures, mostly depending on shelf, but even between the left and right sides of the same shelf. The top shelf, when measuring the items with a laser thermometer, varies between 9 to 14 C. The items on the next shelf down read from 2 to 4 C, the next -1 to 3, and the drawers below that are around 8, 12, and 12C. I’m hoping this is just a fan problem, like the similar issue I had with the freezer side a few years ago, which was fixed with a new fan. But in that case the freezer was colder as you went lower, which is what I would have expected to see in the fridge if it was just a fan issue, not warmer at the top and bottom, and freezing in the middle?

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Bosch side by side B20CS51SNS fridge section has very different temps for each shelf

The fridge section is set to 4 Celcius on the control panel, but the inside of the fridge has wildly varying temperatures, mostly depending on shelf, but even between the left and right sides of the same shelf. The top shelf, when measuring the items with a laser thermometer, varies between 9 to 14 C. The items on the next shelf down read from 2 to 4 C, the next -1 to 3, and the drawers below that are around 8, 12, and 12C. I’m hoping this is just a fan problem, like the similar issue I had with the freezer side a few years ago, which was fixed with a new fan. But in that case the freezer was colder as you went lower, which is what I would have expected to see in the fridge if it was just a fan issue, not warmer at the top and bottom, and freezing in the middle?


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B22CS80SNS/01 Bosch Refrigerator working, freezer warm

I have a Bosch side by side refrigerator model B22CS80SNS/01 that has worked perfectly in the 2 years I’ve owned it (came with the house). Suddenly the food started to thaw in the freezer. The freezer is now blowing almost room temp out of the vent, and the refrigerator vent is blowing about 38 F.

I tested the freezer compartment transducer using a table in the service manual. Resistance matched table values from near freezing to about 85F, as measured at the connector on the control board located on the top of the unit.

I also ohm’d out the compressor, looks good with 7 ohms between each of the 3 pins. However, it’s a variable speed compressor, and the inverter is only getting 2.3V DC. My understanding is that it should be 4-6 Vdc, but there is no value in the manual.

This unit has two evaporators that share a single condenser, one evaporator in the freezer and one in the refrigerator. A solenoid controls refrigerant flow to each evaporator. Since one compartment is warm and the other cool, I assume the solenoid is blocking refrigerant to the freezer evaporator. The solenoid has two wires to it. I couldn’t get the meter into the connector with it connected, but with it disconnected I measured 40V AC to ground on one pin and 0 V to ground on the other. I realize now that I should have measured pin to pin…but it was past midnight. Does anyone know how the solenoid is controlled by the 2 wires? It’s labeled AWECO KMV432 120V 60Hz, so I assume it’s AC. Couldn’t find any info on it.

I’m thinking it’s a bad control board but don’t want to buy the wrong part. To make matters worse, I can’t find a wiring diagram for the unit anywhere, so I don’t know for sure which of 3 boards control the solenoid or the inverter voltage. Service manual is terrible, doesn’t give any info.
Are there any other tests I can try? Any help would be greatly appreciated.

Thanks! Brad


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GE Freezer frost problem

I have a GE side by side and have been having issues with frost in my freezer. I researched the issue and it was suggested that it could be the gasket. It did looked worn and I noticed the freezer wasn’t shutting all the way. Which causes warm air to enter and cause frost. I fixed that issue and my freezer closes completely. I am back to having frost build up. My food is staying frozen so that’s not an issue. Any thoughts?

MODEL: GSHS6NGBBHSS

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Sanyo SR3770S Accidentally pierced evaporator coil

Hi Everyone,

I just joined the forum because I have a problem.

I was defrosting a mini-fridge for a friend and I was chipping away at the ice with a screwdriver and mallet. (The entire freezer was a block of ice.) I was being gentle, knowing that I didn’t want to screw up any of the hardware, but the screwdriver slipped and pierced the metal that separates the freezer from the refrigerator. (Since it is a mini-fridge, there’s only one door and then the freezer is partitioned within.) The metal is ribbed and when it pierced, gas shot out, which I am assuming was the refrigerant.

I was originally thinking, oh well, don’t really need the freezer anyways, but there probably are not separate refrigerant holders for each section and if I run it as is, the compressor is going to burn out, right?

So, I’ve been trying to figure out if I can just replace this part, but this refrigerator seems to have been discontinued. Does anyone know where I can find parts?

Thanks,

Jeff

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B26FT70SNS Bosch 800 Series Freezing Food

Hello, I have a Bosch 800 Series refrigerator and it has been freezing food. The crisper drawers are the worst culprits, but food will freeze anywhere in the fridge, especially if you put it at the back of the fridge. I spoke to a repair guy a year ago and he mentioned I should tape over the vents at the back of the unit and just leave the two on top open. I have tried this, but it does not seem to help. There appears to be two vents on the bottom of the fridge as well which I have not taped. The compressor seems to be working fine……the unit does not make any unusual noises and it does not run for prolonged periods of time. I have also tried increasing the temp via the digital temp control on the front of the fridge, but it will still freeze things in the drawers and at the back of the fridge. Any thoughts on what could be causing this? The thermostat possibly? I’m sure I will need to get a repair person in, but I would like to have some idea of what the possibilities could be before I am charged to replace 5 things that did not need to be replaced.

Thank you

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