"TURTLE" wrote

There is one thing i left out. In the refrigerator service business
there is a old rule that says if there is a dought as to what the
problem was with the defrost system. As a rule you change the defrost
timer and move on.

TURTLE

That's not the rule for me. It's a pretty simple diagnosis. Heater, limit
switch, timer.
Even the newer adaptive defrost models with electronic controls are easy to
figure out.

I would not like changing a timer only to get called back.