Look at the numbers that correspond with the spades on the timer. The timer you installed is numbered 1 4 3 2.
Most timers are wired 2 1 4 3.
If the old and new timer doesn't match the then that's your issue.
Wouldn't be the first time a lookup was incorrect. Many techs here are more experienced with the mechanical defrost timer systems and how they are wired including Durham and the Samurai. I'm sure they will be able to deny or confirm this.
- Samurai Appliance Repair Man likes this