Model Number: MZF34X20DW00
Brand: Maytag
Age: 1-5 years

I'm looking for some advice concerning a Maytag Freezer model MZF34X20DW00. It appears to be going through a defrost cycle more often than it used to. I think it used to do it every 12 or 24 hours but now it's every 4 hours. I'm thinking of replacing the control box P/N W11246303. The freezer seems to be otherwise operating properly as it goes down to negative 12 degrees but every 4 hours it warms up to about 4 or 5 degrees and then back down to negative 12.

Thoughts, ideas, suggestions?