Question about Amana ABB1922FEW (186 cu ft) Bottom Freezer Refrigerator

1 Answer

Amma Model ABB1922FW bottom freezer. The bottom freezer temp drops to -10º and ice forms on what I think is the condenser. Refg holds at proper temp. Controls on refg set at #4 and #1 on freezer. I am thinking a thermostat might be the problem

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  • littlefarm47 Mar 28, 2011

    This model has openings in the interior back wall. The portion that builds ice is visible throuth these.

    I used a hair dryer on and earlier occasion and everything worked fine. The lower than normal temp is now reached with freezer setting at lowest setting. Since my first contact with you we now have to set fridg setting at 5 (one above normal) to keep it cool. If this is not a job for do it yourselfer, which I am. I would like to know what I migtht expect to be fixed by our service tech.

    Your comments are helpful and greatly appreciated. (littlefarm47)

  • littlefarm47 Mar 28, 2011

    Your comments were helpful, I clean all areas on a regular time table Will contact our service tech.
    I am confident I could do all electrical, just will not touch coolant
    Your response was terrific and I will probable use this service again in the future

  • littlefarm47 Mar 29, 2011

    Steve, Re: Freezer gets too cold. Ice forming. Problem was malfunctioning evaporative cooler fan. This fan is located inside and behind back panel of freezer. Remove ice maker, drawer glides and panel to access. Hope this helps others will similar problem, Thanks for your help

  • littlefarm47 Mar 30, 2011

    Condenser fan motor replacemnet appears to be working, It is auto defrost and maybe that allowed ice to form. This was not the fan that cools the coils and is found on the back of refg. I too felt that a faulty temp control was the problem and if this happens again in the near future I will check further. I do have the tools to work with.. Thanks again for your prompt response. I will contact FixYa in the future should I have other problems that I am not sure of the procedure.

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  • Amana Master
  • 3,287 Answers

Ice build up on the freezer coil ("evaporator coil" ) shouldn't happen - frost yes, ice no. The evaporator coil is only visible if you remove the back inside wall of the freezer (where exactly are you seeing the ice build up?). Going further with the frost - the defrost circuit activates for about 20 minutes every 8 hours (if memory serves me correct), so frost should be very thin on the fins of the coil.

Having -10 F is not a bad temperature for a freezer. Fresh foods should be about 34 degrees F.

Posted on Mar 28, 2011

  • 1 more comment 
  • Steve Mar 28, 2011

    Your
    fridge is probably suffering from a defrost circuit failure. One (or
    possibly more) of the following components has failed: 1) the defrost
    terminator or sensor, 2) the defrost heating element or 3) the defrost
    controller / timer. Items 1 & 2 will be found in the freezer
    compartment - behind the back wall. The 3rd item can often be found in
    the toe space at the bottom of the fridge - behind a kick plate.

    Before
    we go further - check and clean the condenser coils on the bottom of
    the fridge with a vacuum. They may be clogged with dust and dirt.

    If you don't know how
    to work with electrical meters and tools or are not comfortable working
    in tight spaces (back wall of the freezer) with live electric parts, you
    should call a repair person. Also, refrigerants are very dangerous.
    If allowed to escape from the tubing, coils, etc. there is a very real
    danger of instant frostbite if it comes in contact with your skin. You
    can be blinded if it contacts your eyes. These above reasons make me believe
    that this is a pretty complicated DIY type job and really isn't a good one for a
    beginner to attempt
    . On the plus side, parts are
    relatively inexpensive, and a qualified person should be able to quickly
    diagnose the problem. Labor rates and standard parts markup can bring this
    repair up into $200 and up range, however.

    If you can't
    swing that amount of money right now, unplug the fridge, empty the
    freezer (& fridge if needed) and completely defrost the the freezer.
    If you access the freezer coil behind the inside back wall, you can
    greatly accelerate the defrost process by leaving the freezer door open -
    or even faster still by directing a blow dryer at it. Keep ice chipping tools clear of the evaporator coils to prevent accidental damage to them and allowing freon to escape. Once all the
    frost & ice is melted, plug the fridge back in, allow to get cold & reload
    the freezer. Depending on how humid it is in your kitchen, you can
    put off the repair at least a month or more.

    When you do finally
    call, for service, having the freezer emptied & defrosted already -
    will save the cost of defrosting time by the repair person.

    I hope this was helpful and good luck. Please rate my
    reply - thank you.

  • Steve Mar 28, 2011

    The electrical part of this job is the most involved. The refrigerant leak is a real issue if you are not paying attention to what you are doing and accidentally nick the thin tubing. I would be remiss if I didn't point that out.

    If you are confidant that you can do the electrical work - in closed quarters - and not go jabbing sharp objects into the evaporator coil, you might be able to handle this job. Saving a couple hundred dollars is pretty good incentive if you ask me. I'm an electrician so the electrics and testing didn't bother me. I knew enough about not damaging the evaporator coil - so I wasn't worried about that part of the job. When my Amana started getting warmer - I was not looking forward to a repair bill or replacing it. If you know how to use a multimeter, and can follow a simple schematic and are confident that you won't go sticking your fingers in the wrong place while the circuit you're testing is live - you might want to try this job.

    Let me know what you think.

  • Steve Mar 30, 2011

    Interesting about the failed fan. I understood the issue as the evaporator coil icing up and the fresh food compartment temp rising. Ice choked evaporator coils show these exact same symptoms, as little to no air can be pulled through the coil to be cooled and blown into the fresh food compartment. A failing fan will definitely cause temperatures to rise in the fresh food compartment as well - but shouldn't cause the evaporator coil to ice up. Icing up of the evaporator coil is a sure sign of a faulty defrost circuit component. That icing issue threw me off. Usually one of the defrost circuit components (heater, timer, terminator sensor, etc.) will fail (as there are more of them) before a fan will - so it is a common place to begin checking.

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