Diagram Where can I get a wiring diagram for a defrost timer for a T49DT and a T49F

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sounds like a bad defrost terminator or timer wired wrong. won't make temp as the evap is not clear of ice/frost build up. check your wiring diagram for location and operation of terminator.

all of the time otherwise the doors sweat.

Replace the defrost element in the base of the cooling cores, and check your defrost timer...See your wiring diagram.. sorry, Russ

L1 goes to 1-2 on Clock, L2 or Neutral to N on Clock, Defrost heater to 3 on Clock, Defrost Limit/Fan Delay to X on clock

I have a generic wiring diagram that I use on all my installs that works very well. It is basically the same for most all commercial walk in freezers. Send me a email address and I'll scan and forward what I have.

most freezers have 2 controls. 1 is a defrost terminator and the other is a fan delay. the delay and the defrost terminator can sometimes be a "2 in 1" type switch. you would have to study the wiring diagram. The delay will not let the fans come on untill the evap reaches a preset temperature. take another look at the diagram. It may be that the evap is not getting cold enough. you may have a refrigeration issue.

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

Hi, installing a defrost timer is not difficult if you know what the wires represent. Since you don't have a manual and you are removing the timer that was put on in place of the original one, I would call the manufacturer of the freezer for help on this. If you mis-wire it, you can burn the motor for the timer out. The freezer it self should have a schematic diagram pasted on it showing the wiring for the defrost timer? Check on it and see. Keep me posted and I will continue to look for one.
Sincerely,
Shastalaker7