True T23F Freezer Logo
Posted on Feb 16, 2013
Answered by a Fixya Expert

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True Freezer T23 compressor will not stop running

My husband replaced the evaporator drain tube heater a couple days ago. Since it's been back up and running, the temperature is holding at 0 degrees but the compressor never seems to stop running. He turned the dial down to 5 and it did shut off, but after about 20-30 seconds the compressor kicked on again. Could he have caused another problem by replacing the drain tube heater? Another thing he noticed is that the fan shuts off when the door is open and restarts when it's closed. I don't recall if this happened before or no, but he says no. The drain tube heater was bad for a couple years, to the point where we had to pull the hose and let the water drip into a bucket or it would just ruin everything in the back of the freezer and we'd end up with a giant iceberg. It's been three days and the new one seems to be doing what it's supposed to. He's convinced that he messed the freezer up by replacing the drain tube heater himself. I didn't think the drain tube heater would make the compressor keep running, but I don't know anything about freezers. Any help would be appreciated. Our ice cream parlor opens a week from today and we're not sure what to do. Thanks!

  • Bill Dickerson
    Bill Dickerson Feb 16, 2013

    what you can do to check it is to turn the tstat slowly and see if it clicks. this will tell you if it is mechanically workin. I really believe you need to replace it however. The tstat controls whether the compressor comes on or not. When the desired temp is reached then it is supposed to turn it off. zero degrees is cold, but if the compressor is always running then it would get colder. I would start at the tstat first then check the evaporator next to see if it is functioning right. At least it is keeping the product cold. The compressor is at least doing that, but you dont want to wear it out.

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1 Answer

Bill Dickerson

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  • Posted on Feb 16, 2013
Bill Dickerson
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Have him check the t'stat. And freon lines. I believe the t'stat is the problem. Are the door gaskets ok and does it seal properly when closed. The fan should always run, so this could be in the rewiring. I am assuming you will be working out of a freezer where the working temp is a little higher.

  • kmm1203
    kmm1203 Feb 16, 2013

    Thank you for your quick response. This freezer is basically for storage if toppings, frostings and tons of ice cream that are about to go into our dipping cabinet. Before the drain tube heater was replaced it never went below 10-12 degrees so I was happy that it was holding at 0.

    Everything I've read says it might be the thermostat, but we're not sure how to check that to see if it's bad.

  • kmm1203
    kmm1203 Feb 16, 2013

    Oh, and the door sea to be sealing properly. Thanks again!

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5 Related Answers

Dennis Boxerman

  • 1306 Answers
  • Posted on May 21, 2009

SOURCE: Freezer Not Fan not running!

Most all commercial freezers have some sort of fan delay/ defrost termination device. Commonly called a "Klixon" (pronounced clicks-on). It is a device that is attached to the evap. It's function is to terminate the defrost cycle when the evap reaches a certain temp, say about 50 degrees or so, to ensure there is no build up of frost/ ice on the evap. It then allows the compressor to run, and cool the evap down to a reasonable temp., say about 20 degrees, and then let the evap fan come on. It prevents overloading the compressor during a high temp condition, and it also prevents circulating warm air left from the defrost cycle. I believe this device is most likely your problem. With no air circulating, the box will no cool down.. I have seen them burn and/or slhort internally. They can come apart. too. I would look here for that problem. the True manufacturing website does not give alot of info on this piece of equipment, such as a wiring diagram but manuals are available.
Check this out and let me know how it comes out.

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Dennis Boxerman

  • 1306 Answers
  • Posted on Sep 11, 2009

SOURCE: TUC-48F undercounter -10 freezer, door heaters not heating

http://www.truemfg.com/catalog/servlet/com.apsiva.servlet.HomeServlet
Go to this True web site. It has spec sheets and manuals. Hope this helps you

Anonymous

  • 185 Answers
  • Posted on Apr 04, 2010

SOURCE: Freezer begun tripping our 20 amp breaker for some reason

ok hi there i viewed the specs for this freezer
http://www.truemfg.com/catalog/servlet/com.apsiva.servlet.HomeServlet
this unit must be plugged into a 120v outlet with a 15amp circuit breaker dedicated (nothing else should on this circuit) so all by itself. you have to check the voltage outlet where you plug in. you must have at least 115v or better (125v the most) if you have less then 115v it will cause damage. ok you went and checked all this out and everything is 15amp with 115v or better and it still trips breaker.
ok the running amps is 6.8 amps so to blow the circuit you need 15 amp which is too high.
i suggest you call a refrigeration guy because he will be able to determine if the problem is the compressor (which has a 4 year warranty with truemfg.com only in the USA) or something else. Usually but not 100% what would make a freezer like yours to blow the fuse is the compressor. if it overheats it will do this, if there is a sudden high pressure within the system it will do it, if you have a condenser fan that is not running at proper speed it will do this...
the problem cannot be pin pointed understand please... you have to babysit it, watch for changes in the refrigeration system and the running compressor amps, voltage drops ( this will cause high amps) etc...
Refrigeration is not easy and alot of tech stay away... so those who stick it out make money cause you have 2 choices: buy another one and pay big bucks to get it fixed. at least see if you can find someone to come over (for like $40 - $60) and tell you exactly whats wrong with it... whew... hope this was helpful and not confusing...sorry

Anonymous

  • 1654 Answers
  • Posted on Aug 15, 2011

SOURCE: freezer is short cycling ,thermostat

To me it sounds like, from what I am reading that your compressor may be the root cause if it is short cycling and you changed the thermostat and moved the thermocouple and the problem persists. Was this working fine till recently or did you just aquire the freezer and noticed it is not performing correctly?
Here's the simple procedure I use whenever I run into one that's 'short-cycling' (trying to start, clicking on/off every few seconds, or in some cases, every minute or two).

Basically, using a digital ohmmeter, you pull the compressor's relay and overload off its three terminals, then check the resistance between each of these three pins. Older relays looked a bit different than the solid state ones, but pull off pretty much the same way.

First note the two pins that read the highest resistance. The one that remains is the 'common', to which one end of both the start and main windings connect. (The common's not always the top pin, so you'll want to do this test to be sure)
Reading from that common to each of the other two, carefully note each reading. Then measure back across the two with the highest resistance, ignoring the common. That reading should be the exact total of the two individual coil readings, because you're reading through both coils in series now.

If those two sets of readings aren't within about 1/2 ohm of each other, then one of the compressor windings is shorted, and if it runs at all, it'll run hot and usually end up short-cycling on its overload protector. If the windings test OK, but it still won't run, then I connect a test cord and try to run it manually. If I can't start it that way, it's most likely a mechanical problem, most often binding bearings, and the 'bottom line's the same: either the compressor or freezer will have to be replaced.dcramer531_131.jpgdcramer531_132.jpg

Did the new thermostat come with an adjustment screw in the back? if so you might want to play with that as that can also cause this issue if it is not set correctly.

J Rosado

  • 1202 Answers
  • Posted on Oct 13, 2011

SOURCE: My true t49-f double door

Many times a refrigerator's defrost timer will go out keeping the compressor from running

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My true gdm-43f freezer keeps running won

Not sure exactly what the situation is I'm going to give you a detailed overview on how the system works that way you'll be able to isolate the problem. Your machine is a single compressor unit, meaning that even though there are two seperate sides, the freezer and the refridgerator, they do not operate independantly. The sealed system, which is what cools the machine, has two parts, a high side and a low side. The high side is located under the machine and consist of a condensor, for which freon is pressurized back into a liquid and passed throug the compresoor to be released as a gas into the evaperator, the low side. This is where the freon is at a cold state. Ok, now that you have the bare basics of a sealed system, we move forward. The Evaporator is located in the freezer side, behind the freezer wall. As freon goes through the evaporator, a fan, called the evaporator fan, is located above it and circulates air throughout the freezer compartment. Also, an airway connects the freezer to the refridgerator, usually top right of freezer, or top left refridgerator on side by sides and through the freezer floor on top mount models. This means the freezer cools the refridgerator side. ****First check point**** Is the fan running in the freezer? This would cause the freezer not to cool as well but also a rise in the refrigeration side would be noticed. As freon goes throught the evaporator, which is made of aluminum, the temperature levels are well below the freezing point, so frost and ice will form on the coils. Over time, this kind of build up would form a blockage, not letting air be drawn from the bottom of the coils by the fan to circulate the cold air. To prevent this from happening the a defrost heater is installed to thaw the ice away and comes on every 6-8 hours. This is initiated by the defrost timer, or in some machines an adaptive defrost control. The heater will be located at the bottom of the evaporator because hot air rises, getting maximum effect. A third part to the defrost system, the first two being the timer and heater, is a bi-metal,or terminating thermost. Its called this because when the thermostat is cold, the metal inside it constricts making a pathway for electricity to flow through to the defrost heaters so it can get hot, and as the heat rises and the ice melts away, the terminating thermostat will warm up, and the metal will expand causing the path of electricity to be broken, turing the heaters off. This is to prevent any high temperature situation from happening, like melting plastic or even a fire. If any of these parts fail, the machine will nit defrost. ***Checkpoint two***** Do you see any ice build up on the freezer wall. This ice will be completely across the back wall. Most signs of defrost problems are noticed first by a rise in temperature on the refrigerator side first. The above can be assessed with a quick look and listen. If no frost is present and the fan is running you can rule out the above. ****Please not that ice build up on just a small section, for example, upper left or right corner only is not a defrost situation but a sealed system issue, caused from low freon or a restriction in the lines and a EPA certified technician should be called.****** The last thing you should check you'll need to pull the machine away from the wall and remove the lower panel to gain access to the compressor area. What you are checking here is to see if the condensor fan motor is running and that the coils are somewhat clean enough for air to flow across them. The fan draws air from across the compressor and through the coils helping to keep the compressor temperature down and also to evaporate the water that is drain when the machine goes into defrost. Rule of thumb is if the compressor is on the fan should be. If the fan isn't runnning the heat from the compressor will be transferred to the machine and notice first on the freezer more so than the refrigerator. ****checkpoint three**** IS the condensor fan running? Are the coils clean, and can you feel the air from the fan with your hand placed on the opposite side of the coils?
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If you need further help, I’m available over the phone at https://www.6ya.com/expert/jason_4570d45317834dd3

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Hello,
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Normal 0 MicrosoftInternetExplorer4 st1\:*{behavior:url(#ieooui) } /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman"; mso-fareast-font-family:"Times New Roman";} Your evaporator coils frost up in normal use and every eight hours or so the entire unit shuts down and the defrost heater comes on to melt the frost. This cycle last about 20 minutes. The melted frost drips into a drain pan and through a drain tube to the drain tray under the freezer/refrigerator where it's evaporated by the condenser fan.


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I have 16.7 upright Frigidaire Ultrafreeze freezer, Model AFFU1766DW3 & SERIAL #WB51720061, manufactured 04/05 that I purchased new 11/05. Water was on the floor next the the freezer but the light on...

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Your drain tube may be stopped up with ice at the upper end because it drains too slow because it's stopped up at the lower end in the evaporator pan under the unit at the floor. It can get dust and mold in it. Once you get the ice out at the top a little pressure with a turkey baster will usually clear it out. Flushing it out with hot water and clorox may help
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How to check everything
http://www.acmehowto.com/howto/appliance/refrigerator/refrigerator.php

If the evaporator coils behind the back panel of the freezer are icing up because of auto defrost failure that will stop the circulation of cold air and eventually affect the freezer too.

check defrost timer, defrost heater, defrost thermostat. In most newer models the timer has been replaced by an electronic control board. If the heater and thermostat are ok it’ll be the control.

You can turn the defrost timer till it clicks and everything shuts down. The heater should now come on. If it does, replace the timer. If it doesn't, check the heater and defrost thermostat. Turn the timer again till everything starts back up to end the defrost cycle.


Your evaporator coils frost up in normal use and every eight hours or so the entire unit shuts down and the defrost heater comes on to melt the frost. This cycle last about 20 minutes. The melted frost drips into a drain pan and through a drain tube to the drain tray under the freezer/refrigerator where it's evaporated by the condenser fan.

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Hi..

Try to check this

Good luck!!!

Regards
PCmania

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