How JustAnswer Works:

  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.

Ask Bryan Your Own Question

Bryan
Bryan, Home Appliance Technician
Category: Appliance
Satisfied Customers: 12002
Experience:  15 yrs. experience as a certified appliance technician.
10522817
Type Your Appliance Question Here...
Bryan is online now
A new question is answered every 9 seconds

211RFD refrigerator; freezer seems to go into defrost cycle

Customer Question

211RFD refrigerator; freezer seems to go into defrost cycle and temp at center of freezer compartment rises from ~-12F to as high as +50F. Evap. fan stays off during this period. When it "decides" to freeze again, it cools rapidly so gas cycle seems OK. This "cycle" seems to start ~ 8 AM and goes on for maybe 2 hours. I am taking time/temp data now. I see that the timer and a "defrost terminator" are available as replacement parts. The "terminator" seems to be a reasonable possibility. I don't have a service manual or diagrams. What say?
Submitted: 4 years ago.
Category: Appliance
Expert:  Bryan replied 4 years ago.
its deffinetly one or the other, 1 defrost timer is sticking and running slow, Part 7538672 Part(NNN) NNN-NNNN width= the defrost thermostat, this could be not sensing the freezer is defrosted and keeps the heater on. I would change them both to be sure, these both fail after a while and need to be replaced anyway, parts should run under $75.00 so its worth it, hope this info is helpful. thanks Bryan
Customer: replied 4 years ago.
OK, so the timer controls the defrost period and the "thermostat" just controls the heater. I just dropped the evap shroud and found the heater isn't working. Can I put this transaction on hold for a bit while I check for power to it and get back to you?
Expert:  Bryan replied 4 years ago.
sure , the defrost thermostat is the thing you should be looking at, check for continuity when this thermostat is (cold only) this should have continuity when cold and nione once it warms above 50 degrees, I'll bet its bad, thanks Bryan, p.s. also check heater for continuity although rarer these sometimes fail.
Customer: replied 4 years ago.

(Note: Fan isn't running, even when I push in the door switch. It does run when the freezer is in the cooling mode.)

Thermostat shows continuity at less than 50F (but no ice around it) - Heater shows ~33ohms, but is getting no power.

So, correct me if I'm wrong, the heater thermostat is closed when cold, and breaks power to heater when warm so heater should be getting power now, provided by output of the timer routed through the thermostat. OR does the thermostat control (for instance) a relay which interupts heater power?

Am I correct in the assumption that the defrost cycle is always the same time period, or does the timer stop until the thermostat opens (defrost complete) and then resume operation? Wish I had a schematic!

Expert:  Bryan replied 4 years ago.
ok the defrost thermostat sounds good, the heater sounds good, so since theres no relay that runs the heater in this it comes down to the defrost timer, yes the defrost timer is suppose to run at the same time period as long as the thermostat is closed the timer should be running, this defrosts about every 8 hours, you can advance the timer by hand to get to defrost (you will hear it click and the fans should shut off, then test for power to the heater do that and let me know,
Bryan, Home Appliance Technician
Category: Appliance
Satisfied Customers: 12002
Experience: 15 yrs. experience as a certified appliance technician.
Bryan and other Appliance Specialists are ready to help you
Customer: replied 4 years ago.

(The timer has been in the defrost mode while we have been "talking".)

 

I advanced the timer through several cycles and then heard a sizzling noise and saw the heater had come on. Looks like I have tired heater contacts in the timer??

 

One clarification - You said, "as long as the thermostat is closed the timer should be running" - does it stop when the thermostat is "open"?

 

Customer: replied 4 years ago.

Hi Bryan; I guess you are no longer there. I think I got what I needed and thanks!

Barry

Expert:  Bryan replied 4 years ago.
sorry I had to go out for a bit, as far as the timer goes it usually deos stay running, I believe you have a bad timer. if you need more help just leave the question open and I keep an eye on it, thanks Bryan
Customer: replied 4 years ago.
OK & thanks again. I did "accept" your advice - did it register ok? I have the timer on order so by Thursday should have an answer.
Expert:  Bryan replied 4 years ago.
your welcome, yes the accept is made I believe, thanks and happy holidays, Bryan
Customer: replied 4 years ago.
Just to keep you informed, since I disconnected the defrost thermostat to check continuity and reconnected, disconnected heat element and reconnected and moved the timer around a bit now the steady state freezer temp has risen from ~ -12F to ~ -5F. Go figure!
Expert:  Bryan replied 4 years ago.
I believe if the thermostat and the heater check out it has to be the timer, you said the heater was crakling so that mean the heater and thermostat are good, I would change the timer, thanks Bryan

JustAnswer in the News:

 
 
 
Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.
 
 
 

What Customers are Saying:

 
 
 
  • Thank you for the expeditious answer. It's good to know you're out there and awake in the wee hours when I finally have time to ask questions about my Jenn Air. Jean Riverhead, NY
< Last | Next >
  • Thank you for the expeditious answer. It's good to know you're out there and awake in the wee hours when I finally have time to ask questions about my Jenn Air. Jean Riverhead, NY
  • You did one super job of explaining to me everything there is to know about this fridge. I'm looking forward to asking you questions in the future. Jimmy Bagley, IA
  • Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help. Mary C. Freshfield, Liverpool, UK
  • This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!! Alex Los Angeles, CA
  • Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult. GP Hesperia, CA
  • I couldn't be more satisfied! This is the site I will always come to when I need a second opinion. Justin Kernersville, NC
  • Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around. Esther Woodstock, NY
 
 
 

Meet The Experts:

 
 
 
  • John

    Home Appliance Technician

    Satisfied Customers:

    13442
    Appliance repair business owner for over 43 years.
< Last | Next >
  • http://ww2.justanswer.com/uploads/docjohn174/2008-12-13_170143_johnask.jpg John's Avatar

    John

    Home Appliance Technician

    Satisfied Customers:

    13442
    Appliance repair business owner for over 43 years.
  • http://ww2.justanswer.com/uploads/tomgoe/2011-01-04_021913_2008-03-03_183612_phpexrmok_c2pm.jpg Tom Goellner's Avatar

    Tom Goellner

    Home Appliance Technician

    Satisfied Customers:

    1191
    32 yrs. experience servicing major appliances and HVAC equipment.
  • http://ww2.justanswer.com/uploads/MD/md2020/2012-6-6_20648_Selfpic.64x64.jpg Tyler Z.'s Avatar

    Tyler Z.

    Appliance Doc

    Satisfied Customers:

    51307
    7+ years being an appliance technician with factory training.
  • http://ww2.justanswer.com/uploads/bryanpaul52/2009-2-18_12031_0918081611.jpg Bryan's Avatar

    Bryan

    Home Appliance Technician

    Satisfied Customers:

    11158
    15 yrs. experience as a certified appliance technician.
  • http://ww2.justanswer.com/uploads/SM/smitty1486/2011-3-1_0145_Snapshotofme1.64x64.png Kelly's Avatar

    Kelly

    Appliance Technician

    Satisfied Customers:

    6493
    Highly accurate diagnostician with over 30 years experience!
  • http://ww2.justanswer.com/uploads/TH/TheHomeSmithy/2011-8-13_11146_homesmithy.500x500.64x64.jpg The Home Smithy's Avatar

    The Home Smithy

    Home Appliance Technician

    Satisfied Customers:

    5935
    30 years repairing appliances
  • http://ww2.justanswer.com/uploads/TE/Teamcold/2012-6-15_15028_HomeRepairsquarecopy.64x64.jpg Barry G.'s Avatar

    Barry G.

    Home Appliance Technician

    Satisfied Customers:

    5039
    27 years in home appliance repair. EPA refrigerant transition and recovery certification type I & II.