T49F true freezer thermostat does have a hot + ground or does it not make a dif. likr other frezzers

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Question moved to maker category.

Thermostat Probe Error

E1 error on a true freezer. True Freezer, 5yrs. Just

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Mar 6, 2022 - Ok. The E1 error code indicates a thermostat probe failure.

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True Refrigeration Troubleshooting

Parts Town
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P1 Alarm/ E1 Code. What does it mean? - This indicates a thermostat probe failure. "P1" displays on units with Dixell electronic controls. "E1" .

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2 and 4 are power for the timer 1 and 3 are load lines N is defrost termination.

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true has a service tech hot line

all of the time otherwise the doors sweat.

There is a switch above the door; check you have power from it when closed, then check the evaporator is cold enough as there is a thermistor that stops the fan until it is beginning to freeze. Lastly check the fan blade isn't stuck and the motor is ok.

Probably the compressor has shorted.
99.999% of the time this is the main culprit.
Otherwise wiring short.

as a general rule, in ALMOST every case, the thermostat just breaks one side of power. Usually one wire in and one out. I've not seen a double pole, single throw in a True, ever.

Freezers have a sensor that is referred to as a "Fan Delay/Defrost Terminator". It senses the temp during the defrost cycle. Usually, when the evap temp reaches about 50 degrees, there should not be any frost or ice on it. This device terminates the defrost cycle. It also keeps the fans off so warm air is not circulated. When the evap gets to about 20 degress or so, the sensor switches on the evap fans. If the fans are not coming on, either the sensor is bad or the evap is not reaching the proper temp to cause the sensor to turn on the fans.

Hope is helps to clear up some things and point you in a direction as to what might be going on.

First of all the unit uses a low temperature compressor which is designed to work on a freezer. Refrigerators use a medium temperature compressor. So most likely it would be over sized for what you are trying to accomplish,
Secondly the evaporator feed device is designed for "low temperature", not "medium temperature", so it would involve resizing the feed device.