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Thread: B26FT70SNS Bosch 800 Series Freezing Food

  1. #1
    Join Date
    Jan 2017
    Location
    Halifax, Nova Scotia
    Posts
    2

    Question B26FT70SNS Bosch 800 Series Freezing Food

    RepairClinic
    Model Number: B26FT70SNS
    Brand: Bosch
    Age: 1-5 years

    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

  2. #2
    Join Date
    Jul 2006
    Location
    Murray, Utah 84107, United States
    Posts
    26,148

    Default

    OK, first remove any tape over the vent openings. That will cause more problems than help.

    The problem is most likely the freezer thermistor Bosch 00618554 Sensor
    It's number 0309 in this diagram:
    Click image for larger version. 

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    The thermistor is a variable resistor that changes value with temperature. You need to know the temperature of the thermistor to check it's value. Use the temp/ohm chart below. The problem I have is Bosch is not a popular brand in my area so I don't have any service information for that machine. There's probably a diagnostic routine programmed into the control. Try to locate your tech sheet. Most common places is under an upper hinge cover or behind the lower grill. The tech sheet will have troubleshooting steps to take. I'll go out on a limb and say if you replace the thermistor, problem solved.

    Click image for larger version. 

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  3. #3
    Join Date
    Jan 2017
    Location
    Halifax, Nova Scotia
    Posts
    2

    Default Thanks

    Thanks for your help. I will replace the thermistor and hopefully that will help. Thanks Again!

  4. #4
    Join Date
    Mar 2015
    Location
    From Planet Mars
    Posts
    387

    Default

    Here is a service manual for that model.Hope it helps.
    Attached Files Attached Files

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