Question about True TBB-3 Commercial Refrigerator

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I have a true tbb-3. It runs continuously. I changed out the thermostat. Same prob. No I build up on either the evaporator or the condenser coils. What should I check next?

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Did you feed the new thermostat into the evaporator thermocouple tube?

Posted on Oct 29, 2013


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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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SOURCE: my true back bar cooler dosent cool it is not iceing over

If you can gain access to the compressor, you will see 2 copper lines going to the compressor. One is smaller than the other. VERY CAREFULLY lightly touch the smaller line while the unit is running. If the compressor is running, that line will be extremely hot.
Start there.
Let me know if I can be of further help.

Posted on Jun 29, 2010

  • 112 Answers

SOURCE: how do i adjust the temperature in a True TBB-4G?

If memory serves it is in the middle of the back left corner inside of the unit. Should be numbered 1-9 Generally 3 - 5 is correct setting. Higher the number colder the box. Most of my customers have theirs set on 5.

Posted on Dec 12, 2010

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How do you remove the evaporator cover on a Tbb-2 cooler?

PDF]True Manufacturing Company, Inc. -
Top Removal for TBB and TDD ... Top Removal for Various Coolers - TSSU, TWT, TUC ... End Cap Replacement-T-Series Swing Door ... GDM 2 Door Cooler IDL Light Diagnosis ... If you keep the Condenser clean you will minimize service ...

[PDF]installation - True Manufacturing
Your TRUE cooler when properly maintained will give you many years of trouble-free service. TO LOCATE REFRIGERANT ..... Removing bracket from skid. Removingbracket from cabinet. 1. 2 .... tab holding the door cord slides out the back. ... The switch is located on the front of the evaporator housing toward the front of .

Nov 08, 2015 | True TBB-2G-S Stainless Steel Beverage...

1 Answer

My GE side by side refrigerator, model TFX25ZPit runs continuously, does not shut off, how can I fix?

My advice is usually to start simple. Take the bottom cover off and vacuum the coils that are probably covered with dust. That will help your refrigerator function better.

According to
"Troubleshooting a refrigerator that runs continuously requires an understanding of how the refrigerator works. By definition, a refrigerator is one of the few appliances within your home that has to run on a continuous basis. If the refrigerator is not running, it will not be able to keep food cold, which will lead to spoilage and waste. The way refrigerators are built to run on a constant basis, they break down on an infrequent basis.
When a refrigerator experiences problems or seems to be breaking down, there are some steps that can be taken to troubleshoot the problem. A continuously running refrigerator is indicative of a problem with one of the components within the refrigerator that needs to be assessed in order to determine the proper fix. In order to properly troubleshoot problems with your refrigerator that runs continuously, an understanding of how the refrigerator works is in order.
Condenser and Evaporator Coil The refrigerator consists of a condenser coil and an evaporator coil. It is kept cold by a liquid coolant that is pumped between the condenser and evaporator through the use of a compressor and motor. The coolant moves from the condenser where it is cooled into the evaporator. The condenser coils inside the refrigerator can be seen on the outside of the appliance while the evaporator coil is located inside the refrigerator.
The Role of the Heater and Thermostat Frost and condensation rarely builds up inside the refrigerator. A heater inside the refrigerator melts any frost that may occur inside the refrigerator long before it ever appears. This melting of frost takes place at various stages inside the refrigerator. After the melting process that takes place with the heater, the thermostat is engaged to set the refrigerator at its proper cooling temperature, keeping frost from building up.
Identifying Specific Problems Most of the parts that make up the compressor and evaporator units inside the refrigerator, consisting of thermostats, the heater, condenser, fans and various switches, are easy to identify and replace. The trick to troubleshooting the refrigerator that runs continuously is to listen for noises and sounds that occur and seem unusual to you. A loud running refrigerator or constant churning of ice when the ice makes is not engaged can indicate problems with the motors or compressors that need to be replaced immediately.
Addressing Problems with a Continuously Running Refrigerator Nearly all problems that can be uncovered by troubleshooting your refrigerator can be fixed by most every do-it-yourselfer. Those problems with your refrigerator running constantly that involves the coils located outside or inside the refrigerator should be handled by a professional repair technician. This is because the coils contain the refrigerant that can be dangerous if you are exposed to it accidentally during the course of a repair. If you notice a problem with the refrigerator or a constant running that seems to be getting progressively worse over time, the best way to address the issue is to isolate the problem and fix it."

Apr 23, 2015 | Refrigerators

1 Answer

I have a True tbb-2g that recently froze some beer in bottles and also a lot of moisture on bottles still in cooler that I have not enjoyed yet ! it is no froze up and compressor was replaced 3 years

Is the condenser clean and clear? Is the fan running? Sometimes when the fan fails the compressor runs and runs and runs. First thing you need to do is go to the supermarket and pick up a red stick thermometer and find out what kind of temperature you have. Try setting the temperature warmer. Is the coil iced up at one end? If it is there is a good chance the system has a leak and needs a look at from a tech with some tools. Hope this helps good luck.

Oct 21, 2014 | True TBB-2G Commercial Refrigerator

1 Answer

Temperature stays at 60 doesn't change even when adjusting thermalstat

Inside cooling coil frosted up? turn to run inside fan only until melted away & restart. Possible reasons for this a)dirty condenser down at the compressor which could be brushed but DON'T bend the fins. b0 refrigerant leaked out thru a existing crack. c)poor compressor pumping ability. d) excessive load of warm air entering the cabinet so the system can not reach the request temperature & shut off the compressor to allow that frost to defrost off the evaporator(inside fins) or the system does get too cold & then frosted to the point & never shuts the compressor off so it can defrost.

Dec 12, 2013 | True TBB-2 Beverage Cooler

1 Answer

T-72f not getting colder than 15*

Check the condenser is clean and fan running. Check no ice build up inside stopping the evaporator fan circulating the freezing air, and setting of thermostat at 2 or 3.
If all else ok, suspect short of gas.

Jul 02, 2012 | True Refrigerators

1 Answer

I have a hoover 505 upside down fridge, it has the motor constantly running and the fridge is not getting cold

Hi and welcome to FixYa, I am Kelly.
Open the freezer and locate the door / light switch. Depress the light switch plunger / actuator and make sure the light goes off and the evaporator fan comes ON. Light stays on and fan does not run = bad door switch.
Next look for signs of ice build up on the back access panel / evaporator coils. Ice block noted on coils and back access panel = evaporator fan problem or possible door switch problem.
Last open the fiberboard cover on the back of the unit and check for massive amounts of lint on the condenser coils and that the condenser fan is running. Blocked condenser coils or condenser fan not running will cause the chassis to be very warm to hot when touched.

If you do not find anything wrong by performing the steps above:
  • Unplug the unit
  • Remove freezer contents
  • Direct an external fan into the freezer compartment for just over 2 hours (manual defrost)
  • Tend to the water mess as needed
  • After 2 hours wipe up any residual water and return the unit to normal service
  • Check to see that the evaporator fan is running.
After a 2- 4 days look again for any signs of ice build up on the evaporator coils. If you note ice beginning to build up on the evaporator coils there is a problem with the automatic defrost circuit.
Possible automatic defrost failure causes:
1. Defrost Control
2. Defrost heater
3. Thermistor (if so equipped)
4. Defrost thermostat

That is pretty much it runs all the time but does not cool troubleshooting. You should find something out of the ordinary by following the steps above.

Thanks for choosing FixYa,

Mar 04, 2011 | Hoover Refrigerators

1 Answer

Compressor runs for a short period of time then kicks off, compressor fan is good. interior condensing coil fan runs well. temp is between 43.3F - 45.0F. Fins are clean on compressor. dial is set at 9,...

1 is freezer side ok?if it ok. it is easy. air vents blocked in either compartment.remove any objects from in front of the air vents.
2 evapor fan work ok.
3 how much frosts build up the evapor coil, if it build up to blockthe air vent. mayon the back wall of the rfrigerator self-defrost timer or deforst thermostat is bad
if it still not work. i have to see hat i an do for u. my e-mail is

Jan 11, 2011 | True T23 Refrigerator

1 Answer

Fridge is too cold even at lowest setting and freezing drinks.

The thermostat sounds like it is out of calibration and stuck closed. A good replacement would be a Ranco A12-1560 mounted in the evaporator (cold) coil.

Nov 07, 2009 | True TBB-3G-S Commercial Refrigerator

3 Answers

Kenmore 596.73502201 Not cooling. Compressor , fan, seal ok

If the refrigerator isn't cool, you need to answer some questions, then see if the compressor is running.

First, answer these questions:

  • Is the refrigerator completely dead? If so, see “It's stopped completely.”

  • Is the thermostat knob turned to the proper setting? If not, reset it.

Next, see if the compressor motor is running

The compressor is a football-sized case with no apparent moving parts. It's on the outside of the refrigerator at the back near the bottom. If it is humming or making a continuous noise and your refrigerator is still not cooling, there may be a more serious problem with one or more of several different components, we recommend contacting a qualified appliance repair technician for further help.

If the compressor is not running but you do have power to the refrigerator, there may be a problem with one or more of these:

  • The compressor

  • The Thermostat

  • The overload, relay, or capacitor

  • The defrost timer

  • The condenser fan motor

Cooling is poor For an overall understanding of how refrigerators should work, read about refrigerators in the How Things Work section of our website. A refrigerator or freezer that is cooling, but cooling poorly, may have a problem in one of several areas:

Evaporator coils
Poor cooling is often the result of a heavy frost build-up on the evaporator coils or a condenser that is clogged with dust, lint, and dirt. 

Evaporator coils Poor cooling is often the result of a heavy frost build-up on the evaporator coils. You can't see these coils without removing a panel on the inside of your freezer. A sure sign that there is a build-up is the presence of any frost or ice build-up on the inside walls, floor, or ceiling of the freezer. Such a frost build-up usually indicates a problem in the self-defrosting system or damaged door gaskets.

The refrigerator is supposed to self-defrost approximately four times in every 24 hour period. If one of the components in the self-defrosting system fails, the refrigerator continues to try to cool. Eventually, though, so much frost builds up on the evaporator coils that the circulating fan can't draw air over the coils. There may still be a small amount of cooling because the coils are icy, but with no air flow over the coils, cooling in the refrigerator compartment is quite limited.

Here's an inexpensive, though inconvenient, way to determine if the problem is with the self-defrosting system. Remove all of the perishable food from the refrigerator and freezer, turn the thermostat in the refrigerator to Off, and leave the doors open for 24 to 48 hours. (Be sure to have several towels ready in case the melting frost and ice causes the drip pan to overflow). This allows the refrigerator to defrost "manually." When the frost and ice build-up has completely melted away, turn the thermostat back to a normal setting. If the refrigerator then cools properly, it indicates a problem with one of three components in the self-defrosting system:

  • The defrost timer

  • The defrost thermostat (also called the bi-metal switch)

  • The defrost heater

If it still does not cool properly, there may be a problem with the refrigerant level or the compressor. You may need to consult with a qualified appliance repair technician to further diagnose the problem 

Condenser Self-defrosting refrigerators all have a set of coils and a cooling fan, usually under the refrigerator, that need to be cleaned regularly. If these coils get coated with dust, dirt or lint, the refrigerator may not cool properly. The coils may appear to be a thin, black, wide radiator-like device behind the lower kick-panel. To clean them, disconnect the refrigerator from the power source, use a refrigerator condenser brush (see the Appliance Accessories section) and your vacuum cleaner to clean the coils of any lint, pet hair, etc. You may not be able to get to all of the condenser from the front, it may be necessary to clean the remainder of the condenser from the rear of the refrigerator. 

Dec 19, 2008 | Kenmore Refrigerators

1 Answer

True TBB-2 Cooler issue

BY to I take it yu mean top area inside cooler. If that is the case and yu are sure the drain is clear it could possibly be one of the following.
1: rusted/ corrodid evaporator drain pan
2: coil in cooler partially frozen

Jun 28, 2008 | True TBB-2 Beverage Cooler

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