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  1. #1
    Join Date
    Mar 2020
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    Post Our walk-in freezer will not stop running

    The compressor on my walk-in freezer will not stop running. Our contractor replaced some electrical parts and still the problem was not resolved. He walked away about two months ago mumbling something about replacing a bad expansion valve but never showed up again. Any ideas of what is wrong? To save the life of the compressor, we have been manually cutting power to the compressor for about 12 hours each day. The defrost cycle works and the circulating fans go off inside the freezer when it goes into defrost but the compressor keeps running. I do not want to pay another contractor until I have some idea what is wrong so that I do not repeat the same misdiagnoses. Where should he or she look for problems?

  2. #2
    Join Date
    Jan 2010
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    How is the temperature controlled ?

  3. #3
    Join Date
    Jun 2014
    Location
    Dover, DE
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    X2 on temperature control.
    Is this a new freezer? Has it ever run correctly?
    Should be a fairly simple electrical diagnosis.
    I havent failed. Ive just found 10,000 ways that wont work. - Thomas Edison

    Its not whether you get knocked down, its whether you get up. - Vince Lombardi

    "In this house we obey the laws of thermodynamics" - Homer Simpson

    Local 486 Instructor & Service Technician

  4. #4
    Join Date
    Mar 2020
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    Thread Starter
    Quote Originally Posted by VTP99 View Post
    How is the temperature controlled ?
    It is controlled by a thermostat inside the walk-in. The thermostat has been replaced. The freezer reaches and holds the proper temperature.

  5. #5
    Join Date
    Mar 2020
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    Thread Starter
    This walk-in has been in operation for about 15 years without problems.

  6. #6
    Join Date
    Jan 2010
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    This should be a simple fix for a competent tech.
    Isn't there one available in your area ?

  7. #7
    Join Date
    Mar 2020
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    Thread Starter
    Apparently not. We live halfway between San Antonio and Austin. We are about an hour from each city. Any ideas what it could be. What is the expansion valve and is it inside the freezer or near the compressor?

  8. #8
    Join Date
    Jan 2010
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    Walking you through a walk-in cooler repair is one thing walking you through a walk-in freezer would be twice as hard.
    There's that much more involved. Without the proper testing tools would even make it more difficult.
    Unfortunately here on this site we are not allowed to offer one do yourself information. The temperature control could be configured different ways to control the temperature.
    There is a contractor locator map on this forum have you looked there for a company near you ?

  9. #9
    Join Date
    Aug 2008
    Location
    Hibbing, MN
    Posts
    823
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    Could be your solenoid valve, pressure controls, contactor, wiring, etc. This should be a very elementary problem to solve. Call someone else.
    If God didn't want us to eat animals... He wouldn't have made them out of MEAT.

  10. #10
    Join Date
    Jun 2014
    Location
    Dover, DE
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    There’s no way of us being able to tell you exactly what the issue is without walking you through DIY troubleshooting, which this site doesn’t allow.
    But this issue should be simple for any half experienced tech to diagnose.
    I havent failed. Ive just found 10,000 ways that wont work. - Thomas Edison

    Its not whether you get knocked down, its whether you get up. - Vince Lombardi

    "In this house we obey the laws of thermodynamics" - Homer Simpson

    Local 486 Instructor & Service Technician

  11. #11
    Join Date
    Aug 2002
    Location
    Southold, NY
    Posts
    27,291
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    Is this box indoors or out?

    Whats the pressure and temperature readings.

    Walls compromised?

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