Defrost brings freezer temp over 100 degrees - True T-23DT Bottom Freezer Refrigerator

If you have a frost free refrigerator then temp jumps as you discribe are somewhat normal during a defrost cycle. However it sound like your defrost temp may be getting too high. There is a limit thermostat on the freezer coils that keep the defrost temp from getting too high. The part is called a (defrost termination thermostat) and is a round disk about 1 to 1.5 inch in diameter clipped to the top of the freezer coils with 2 wires coming out of it. When cold, it allows power to the defrost heaters. At around 35/40 degrees it opens and shuts off power to the heater. 35/40 degrees sounds high for a freezer temp but that is behind the wall and only for a short time. Yours may be staying on too long or out of temp calibration needing replaced.

Does it? Or is it just the display that reads 50? Don't forget the evaporator has to get to 50f to get rid of the ice forming on it. It will do this 3 or 4 times a day, but the product temperature should not creep much above setpoint. Check the food temperature with a digital probe when defrost occurs to see if it is only the display module ( which may have it's sensing phial too close to the evaporator or have lost it's insulation jacket)
Also check the grill in the base (condenser) is clear and clean so it recovers from defrost as it should..

Check for ice build-up in and around the freezer fan where the blades are, if you can see ice in there (some times it may look like white foam but dont be fooled, it will be ice), the fan will be hitting it, defrost the freezer and check defrost element, (you will have to dismantle freezer section to get to it but reletively simple job) disconect from mains first. Good luck

All refrigeration products have a defrost set point. Most residential units defrost about every six to eighteen hours. This process should take about 30 minutes to 1 hour. The temp goes up so high inside because there is a heating element in the coils to thaw any residual ice. The temp should not exceed about 45 degrees though. If it does the the compressor is signaled to come back on and start cooling again. This is perfectly alright. The time at higher temp is not enough to spoil the food. Hope this helps. Good luck.

You have to defrost the coil by turnning of the unit and to make it faster leave the inside fan/s running.But if it's building up ice and the fan/s inside works ,is most probably that the unit is low in refrigerant(freon) , or the defrost system is not working.

have you checked the door seals on the freezer. sounds like its getting air into the compartment and causing the problem.

It appears that the defrost bi metal control is hanging up and during the defrost the temp in the freezer is going too high. It is supposed to terminate the defrost at around 50 degrees. This usually occurs in about 20 minutes, if the defrost heater stays on for too long the freezer temp goes too high. Change the defrost bi metal

turns out the coils were not defrosting or at best working intermittently. I defrosted the coils and ordered a defrost timer the old timer continued to pop from intermittently.I replaced the defrost timer
and it quit popping and noew the freezer works fine temps range between 9 degrees F and
14 degrees f.

Hi dgh1,
The freezer should stay within 5 degrees of 0 while in operation. While in defrost the freezer may reach as high as 20 to 25 degrees. If any higher temperatures are reached your food will spoil as they are defrosted and refroze everyday. If you find that the temperature is allowing your food to defrost you may want to replace your defrost thermostat. This device is located on top of the evaperator coil inside the back of the freezer. It is made to turn the heater off when a temperature of 55 degrees is reached. One other possible problem could be your defrost timer is taking to long to restart the cooling cycle after defrosting. I hope this will help you and please send any other questions you may have, I am happy to help. and dont forget to rate me.
Mike Anderson
Anderson Appliance
(865)945-3808

What is the temperature in the freezer? Anything below 32 degrees freezes water. Make sure condenser coil is clean and that air can flow over it freely. In the back behind a removable panel you will find the condenser. Clean it completely and make sure the fan operates when the compressor is running.. Also check for possible frost on the back wall of the freezer which would indicate a defrost problem. if there is frost there the problem is ether a bad timer, heater, or defrost thermostat.