Warming of the freezer section above 15 degrees

This actually was a part of a thermostat problem. I bought a thermostat one week earlier and that fixed the problem. I bought the thermostat thinking that was part of the warming of the fresh food and freezer section. I installed the defrost timer anyway with the thermostat and it is working well. I didn't know that the freezer got above 15 degrees on the defrost cycle every 16 hours.
One 1/4 hex screw at the top of the housing removes the entire assembly. Be careful not to damage the foam on the left side removing the housing. There is a tab on the bottom right on the back panel that lifts up to remove. Unplug that whole assembly from the fridge wiring harness and the rest is obvious.