Every video says either your defrost timer will stick or not come into play at all... so it needs to be replaced. BUT, I personally think mine stays into the cycle too-oo long (50+ mins). It is hard to imagine that it sticks and then recovers. So is this an indicator of failure also (too long defrost)? I think 20 mins would be long enough and then I would not suffer the temp fluctuations that I do either = going from -6 to +12. I doubt these can be adjusted to a less time in defrost but thought I would ask. It looks very similar to APPros Defrost Timer 215846604 / AP2592907. * Thanks in advance.