Defrost Termination Temperature Sensor

The freezer defrost sensor also known as the defrost bi metal or defrost termination thermostat is next to the evaporator.

Defrost termination temperature sensor.

Expedited shipping availability may vary. The interior temperature may rise 10 20 f during the defrost. Instead lower the termination temperature or move the termination sensor on the coil. Defrost controlled by rts al61 al61 al61 heaters failure improper current draw from heater turn on or off.

Run with a return temp. When it trips the defrost bi metal shuts off the defrost heater. After a run period of approximately 6 hours the evaporator coil will be frosted and require a defrost. When the defrost sensor trips it shut off power to the defrost heater.

If you need your items by a certain date please contact us prior to placing your order. Of 7 c 45 f. Al60 al60 al60 defrost termination sensor failure dts htt open or dts fails to open afer 2 hrs of defrost dts fails to close after 1 5 hrs of comp. 0 125 because this item is not stocked in our warehouse processing transit times and stock availability will vary.

Four defrost cycles per day are programmed at the factory 4 a m 10 a m 4 p m and 10 p m. The refrigerator defrost sensor also known as the defrost bi metal termination thermostat trips when it detects that the temperature of the evaporator is getting hot enough that it might overheat. And what you need to sense is coil temperature. The evaporator coil cannot go above 32ºf so long as there is still ice in that area so it stands to reason that if heaters are running on the coil and the coil is still at 32ºf or lower then there is still ice.

It may be necessary to change the defrost cycle times to fit your work schedule. The idea behind defrost termination is to know the coil temperature. It trips when the evaporator temperature gets too high to protect the evaporator from overheating. If your customer complains of icing on the floor don t increase the number of defrost cycles or the termination temperature.

This is where defrost termination and fail safe comes in. If the time is set way too long for defrost the temperature termination will stop the defrost and send it into refrigeration mode before the product gets too warm. Your still sensing temperature. Adjustable temperature termination controls allow for better tweaking of the system to prevent this condition.

If the temperature sensor or thermostat isn t working correctly it will still go back to refrigerating once the time is complete.