Recalibrate Johnson refridgerator controller

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Closetbrewer1234

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Is there anyway to recalibrate a digital Johnson controller? It reads about 5 degrees too cold. It's an older unit probably about 10 years old.

Thanks
Closetbrewer
 
I think the parameter is called offset and can be adjusted several degrees to provide a correction. Manuals are available online at Johnson Controls' site.
 
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