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  • True refrigerator freezing?

    Posted by chefhenryclay on September 22, 2023 at 1:59 pm

    My true refrigerator model T-23G-2 keeps freezing products inside. I replaced the thermostat with True 800345 Temp Control but stuff still freezes. Any other possibilities that might be causing this issue?

    fixbear replied 1 month, 3 weeks ago 3 Members · 6 Replies
  • 6 Replies
  • Tito

    September 22, 2023 at 3:07 pm

    What is the thermostat set to?

    There are a few things I would check to better understand what may be going on. Is anything covering vents. Are the gaskets in good condition. Is the coil clean?

  • fixbear

    September 22, 2023 at 9:35 pm

    Did you check the thermistors.

  • chefhenryclay

    September 24, 2023 at 5:55 pm

    My thermostat is on the highest level for temperature control. It is set right before you can turn the compressor off. Currently, I turn the knob to where I can hear the compressor shut off and then the refrigerator will defrost. Then I turn the knob back just a little bit, clicks and compressor kicks on again. It still freezes product,

    I cleaned the coils and checked the probe being in the right placement next to the coil fins. I am at a loss regarding the thermistor, I couldn`t find it on the parts list for this model True Refrigerator. Could it be some sort of relay issue?

  • fixbear

    September 25, 2023 at 5:42 pm

    No, because the thermostat has control and will stop when turned down.

    Is this a electronic or mechanical control?

    It sounds like a mechanical because you have a knob. If so, it may have the wrong thermostat. It should have a A12 Ranco. Or the thermostat has a mechanical problem internally. But the bulb/sensing has to be bonded to the coil. It works like this, when the coil temp gets to 37 or 38 degrees (depending on model), the thermostat closes. when the sensing bulb gets down to 10 to 19 degrees (depending on setting) it opens. This is to facilitate a defrost cycle every time. Important on a commercial box. Now if someone installed a air temp control like a A30 Ranco. you will see freezing of areas at time.

    Have you placed a thermometer inside the box? Are the fans running at speed? Is the airflow blocked by product? Thís all comes into the mix. Every box has flow problems and cold/warm areas. Remember that boxes close to the door also block flow. Most reach-ins flow from the evaporator to the front, down to the bottom, warms the air as it flows through the product and flows to the back and up back to the evaporator. If the bottom has denser packaging than the rest of the box, it will tend to be colder.

    Depending on model and year, some of the evaporators had a tube in them for the sensing bulb. Others with aftermarket thermostats we had to thread the tube through the fins to do proper sensing.

    To test your thermostat, you would have to immerse the sensing bulb/tube in a cold environment below 5 degrees.

    Hope this all helps you figure it out.

  • chefhenryclay

    October 5, 2023 at 9:30 pm

    Solved I ordered a thermostat that was for a freezer not a refrigerator. The right one came in yesterday and the compressor has been cycling on and off. Thx For the help fixbear and the rest of you all.

  • fixbear

    October 7, 2023 at 2:10 pm

    Glad you got it solved.

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