Question about True TD-95-38-LT Beverage Cooler

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Cooler coil freezing up

Temp.either to hot or to cold

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Way too many thing's can cause such problem's. Most important with bottle coolers are clean condensor, good condensor ventilation, do not overstock and block evaporator circulation. Then you get to component failures, failed thermostat or improperly positioned sensing element, failed evaporator fan, icing of the evaporator section from fan or gas charge problems, contamination in gas curcuit causing cap tube blockage, compressor overheat shut downs from real or defective component issue's. Trouble-shooting is a plan for cause elimination, start with the simple end and move out from there?

Posted on Jul 11, 2010

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It is not holding temp. its range is 30 to 49 degrees in one hour


As a refrigerator, it should not go below about 34 degrees. If it is going down to 30, it may be freezing up on the coil. If you get a chance, do this: unplug the refrigerator and let it sit for 4 hours with the door open. If the coil is frozen it will defrost. You can feel the coils inside the box at the top back inside the unit. If you feel ice at any time it is an indication that it is getting too cold. Once the inside coils freeze over, the air can't flow through the coils and the unit will get warmer and warmer. When it is defrosted, set the thermostat just above the off setting. Let it run until the compressor shuts off. See what the temperature reads on a thermometer inside the cooler. If it is not cool enough move the thermostat one number colder and let it run an hour. Take your time, let it equalize before you change the thermostat. Also if the cooler is empty it is hard to set the thermostat because when you open the door all the cold air escapes and the temp will change rapidly. If it is full of cold food, opening the door won't change the temperature very quickly. Also check the radiator coils at the bottom of the cooler behind the grill. If it is clogged with dust or grease, the compressor may overheat and shut off prematurely.

Sep 21, 2010 | True T-49 Side by Side Refrigerator...

Tip

Why your unit is freezing up.


To understand why your AC or heat pump is freezing up, it helps to know how your system works.

There are 7 major parts to an AC system, 9 with a heat pump.

1 - Condenser/heat pump (The outdoor unit)
2 - Air Handler (the indoor unit unless the system is a package unit, then all is outside in one system. The air handler is usually found under the home, in an attic, or in a closet.)

In the condenser are the following major parts.

3 - Compressor
4 - Condenser coil
5 - Condenser fan
6 - (HPs only) reversing valve

In the air handler are the following major parts.

7 - Blower motor
8 - Evaporator coil
9 - (HPs only) electric heat strips

Some systems known as "dual fuel systems" use another heat source in place of the heat strips, usually a gas furnace. I will address gas furnaces in another post.

When an air conditioner is operating properly several things are taking place.

1 - The compressor is compressing or "pumping" refrigerant through the system.

2 - through changes in pressure, the refrigerant makes the evaporator coil get very cold, and the condenser coil gets very hot.

3 - The blower motor/fan circulates air across the evaporator coils, as the room temperature air (Also known as "indoor ambient") goes through the cold coil, it exits, cooled approximately 15 to 20 degrees cooler than when it entered. (In a ducted system, the blower is also the fan that circulates the air throughout the home.)

4 - The condenser fan circulates air across the condenser coils. As the outdoor air goes through the condenser coil, it removes heat from the coils that are very hot. This in turn removes heat from the refrigerant so it can run its cycle again, and through pressure changes, cool the evap coil.

5 - With a heat pump, the reversing valve reverses the flow of refrigerant in the condenser and evaporator coils.
In AC mode, the evaporator coils get cold, and the condenser coils get hot. But in heat mode, the evaporator gets very hot, and the condenser very cold.

Now, whichever coil is getting cold will freeze up if there is inadequate air flow across the coil, as the refrigerant in it is far below freezing, and there is not enough airflow to keep the humidity in the air from freezing on the coil.

Things that can cause poor airflow are,

1 - Dirty/clogged coils
2 - dirty/clogged filter (will only effect evaporator coil)
3 - Closed/blocked vents (will only effect evaporator coil)
4 - Malfunctioning or dirty fan

Low refrigerant will also cause a coil to freeze up, reduce efficiency and cause the system to run for long periods of time. Not to mention, shortening the life of the unit.

With a heat pump, in heat mode only, the condenser (outdoor) coil will routinely begin to freeze up in cold temperatures. This is due to the fact that the refrigerant is below freezing, and the cold outdoor ambient temp is not warm enough to keep the condensation in the air from freezing on the coil.

Note, a properly working AC should never freeze up.

A heat pump is equipped with defrost controls to prevent ice buildup.
Some are controlled by timers, some by temp.

When a HP is going into defrost mode, the condenser fan shuts down, the reversing valve reverses the flow of refrigerant and the once cold condenser coil now gets very hot, defrosting the coil. (Many people have said this process sounds like the unit is coming apart, or about to explode and are frightened by the "smoke" which is really just steam from melting ice that comes off the unit.)

During defrost mode, the secondary or "auxiliary" heat comes on to ensure that you are still getting warm air from the vents. (Again, this can be electric heat strips or a dual fuel system)

If you are experiencing cold air from the vents during defrost, that means your auxiliary heat is malfunctioning.

The auxiliary heat is used for three purposes.

1 - during defrost mode to maintain warm airflow (automatic)
2 - when the HP cannot maintain the set temp due to extreme outdoor temps. It comes on when the indoor temp drops several degrees below the set temp on the thermostat (automatic)
3 - For emergency heat source when the HP is not working. (Manual)

To recap....

Iced up coils?

Poor airflow
low refrigerant
Malfunctioning fan
failing defrost system


There are two things that can be done in a pinch to help de-ice frozen coils. This may get you by until the repairman can get there, or you can fix the system if you are a do-it-yourselfer.

HPs frozen outdoor coil in heat mode, not going into defrost?

Cover most of the vents, and turn the system onto cooling mode until the outdoor coil is thawed. then uncover vents and return to heat, or emergency heat. (this usually takes 15 min or less)

Frozen coils in AC mode with a heat pump?
Turn the system to heat with the thermostat on just high enough to get the system to come on. (again, usually takes 15 min or less to thaw.)

AC only, with frozen evap coils? (this can sometimes be seen frozen all the way outside to the compressor on the copper lines.)

Turn the system off, and the fan switch from "auto" to on".
This will usually defrost the coils within 1 to 2 hours.
(If your system has the furnace in line before the evap coil, turn the system to heat, and the furnace will defrost the coil within minutes.)



on Dec 25, 2008 | Carrier XHB123D X/Y Series Heat/Cool Air...

1 Answer

We have recently had three problems with our three year old Carrier 24 ACA airconditioner that I believe has led to it no longer producing the low temp. chilled air it did when it was installed. !. water...


Your air temp should be at least 20 degrees cooler than the indoor air temp. This is ideal. But it sound like your unit is low on freon. When units get low they will freeze up. They will also freeze up if air flow is restricted on the inside coil or the fan quits on the external unit.

Aug 08, 2010 | Carrier 38CKC024 Air Conditioner

1 Answer

Cooler gets to cold


Try cleaning the condenser coil.

Jul 07, 2010 | True GDM-69 Refrigerator

1 Answer

I have a GE window unit. I do not hear or see any water draining.. and I do not hear any change in the way the unit runs like I used to when it would blow really cold air. The air is cool - but not cold...


May need to wash out the out door coil. Normally spray through rear coil at about a 30 degree angle. try not to spray water directly into fan motor. If unit is freezing up it may be low on freon. if it is real hot out you may need to run 24 hour a day. High indoor humidity will affect its output also. could have weak compressor. check temp drop accross indoor coil. Shoud be 20 - 30 degrees in most cases cooler than room temp.

Jun 23, 2009 | GE AJCQ08ACB Air Conditioner

1 Answer

Keeps running and freezing eveything, replace temp switch still freezing up


No the temp wire should be not on top of the coil but running down the middle all the way down to the bottom of the cooler. Try this first and if it doesnt work let me know

Jun 02, 2009 | True TD-65-24 Commercial Refrigerator

3 Answers

It is freezing up inside the cooler


Turn the screw on the back of the unit so that the water is not chilled to such an extreme cold

Jun 20, 2008 | Avanti Hot and Cold Water Cooler

2 Answers

Wine cooler gets too cold (freezes)


Check your thermostat setting, if the setting is ok then something wrong with your thermostat control.

Jan 20, 2008 | Haier BC112G Wine Cooler

1 Answer

Cold water freeze


you have to lower the termostat because is freezing the the cold water duct that happens when is cold or winter

Jan 01, 2008 | Soleus MW-55

1 Answer

Cooler is freezing my Beer!!


Could be the thermostat isn't working and the unit is just running and running all the time. To me that seems the most simple explanation right now. Can you check the temp inside when on the lowest setting for a day, then turn it up to the highest for a day and see if there is a huge difference in temps? Does the compressor motor ever turn off or does it run continuously? Suspect that t-stat...

Nov 20, 2006 | True 3 Keg Direct Draw Beer Dispenser,...

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